./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a0165632 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_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1a590e2514668f126114e4312bb6236a04cce9502b393533b5b4bfd230be904b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 04:49:48,677 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 04:49:48,787 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-32bit-Taipan_Default.epf [2024-11-09 04:49:48,795 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 04:49:48,798 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 04:49:48,836 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 04:49:48,838 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 04:49:48,838 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 04:49:48,839 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 04:49:48,840 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 04:49:48,841 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 04:49:48,842 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 04:49:48,843 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 04:49:48,845 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 04:49:48,846 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 04:49:48,846 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 04:49:48,846 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 04:49:48,847 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 04:49:48,847 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 04:49:48,848 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 04:49:48,848 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 04:49:48,852 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 04:49:48,853 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 04:49:48,853 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 04:49:48,853 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 04:49:48,854 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 04:49:48,854 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 04:49:48,854 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 04:49:48,855 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 04:49:48,856 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 04:49:48,857 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 04:49:48,857 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 04:49:48,858 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 04:49:48,858 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 04:49:48,859 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 04:49:48,859 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 04:49:48,860 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 04:49:48,860 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 04:49:48,861 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 04:49:48,861 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 04:49:48,861 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:49:48,862 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 04:49:48,862 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 04:49:48,863 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 04:49:48,863 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 04:49:48,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 04:49:48,864 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 04:49:48,864 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 04:49:48,865 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 04:49:48,865 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a590e2514668f126114e4312bb6236a04cce9502b393533b5b4bfd230be904b [2024-11-09 04:49:49,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 04:49:49,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 04:49:49,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 04:49:49,201 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 04:49:49,202 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 04:49:49,203 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c Unable to find full path for "g++" [2024-11-09 04:49:51,282 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 04:49:51,450 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 04:49:51,450 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c [2024-11-09 04:49:51,457 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/data/d37b1b85c/48973bd7c5a24d8ea71d8720e1310101/FLAG416a2b4ee [2024-11-09 04:49:51,475 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/data/d37b1b85c/48973bd7c5a24d8ea71d8720e1310101 [2024-11-09 04:49:51,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 04:49:51,481 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 04:49:51,484 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 04:49:51,485 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 04:49:51,490 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 04:49:51,494 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:49:51" (1/1) ... [2024-11-09 04:49:51,495 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21088b45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:49:51, skipping insertion in model container [2024-11-09 04:49:51,496 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:49:51" (1/1) ... [2024-11-09 04:49:51,515 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 04:49:51,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:49:51,693 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 04:49:51,710 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:49:51,728 INFO L204 MainTranslator]: Completed translation [2024-11-09 04:49:51,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:49:51 WrapperNode [2024-11-09 04:49:51,728 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 04:49:51,730 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 04:49:51,730 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 04:49:51,731 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 04:49:51,738 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:49:51" (1/1) ... [2024-11-09 04:49:51,748 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:49:51" (1/1) ... [2024-11-09 04:49:51,763 INFO L138 Inliner]: procedures = 13, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2024-11-09 04:49:51,763 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 04:49:51,764 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 04:49:51,764 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 04:49:51,764 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 04:49:51,773 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:49:51" (1/1) ... [2024-11-09 04:49:51,774 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:49:51" (1/1) ... [2024-11-09 04:49:51,776 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:49:51" (1/1) ... [2024-11-09 04:49:51,776 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:49:51" (1/1) ... [2024-11-09 04:49:51,780 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:49:51" (1/1) ... [2024-11-09 04:49:51,782 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:49:51" (1/1) ... [2024-11-09 04:49:51,784 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:49:51" (1/1) ... [2024-11-09 04:49:51,785 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:49:51" (1/1) ... [2024-11-09 04:49:51,786 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 04:49:51,787 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 04:49:51,788 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 04:49:51,788 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 04:49:51,789 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:49:51" (1/1) ... [2024-11-09 04:49:51,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:49:51,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:49:51,821 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 04:49:51,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 04:49:51,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 04:49:51,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 04:49:51,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 04:49:51,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 04:49:51,857 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_20_to_21_0 [2024-11-09 04:49:51,857 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_20_to_21_0 [2024-11-09 04:49:51,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 04:49:51,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 04:49:51,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 04:49:51,857 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_21_to_21_0 [2024-11-09 04:49:51,858 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_21_to_21_0 [2024-11-09 04:49:51,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 04:49:51,937 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 04:49:51,939 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 04:49:52,156 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-09 04:49:52,156 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 04:49:52,222 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 04:49:52,226 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 04:49:52,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:49:52 BoogieIcfgContainer [2024-11-09 04:49:52,226 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 04:49:52,254 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 04:49:52,254 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 04:49:52,260 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 04:49:52,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:49:51" (1/3) ... [2024-11-09 04:49:52,263 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b0afa0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:49:52, skipping insertion in model container [2024-11-09 04:49:52,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:49:51" (2/3) ... [2024-11-09 04:49:52,264 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b0afa0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:49:52, skipping insertion in model container [2024-11-09 04:49:52,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:49:52" (3/3) ... [2024-11-09 04:49:52,266 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_nested_2.c [2024-11-09 04:49:52,285 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 04:49:52,285 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-09 04:49:52,379 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 04:49:52,387 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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;@451d5ac3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 04:49:52,388 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 04:49:52,391 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 19 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 04:49:52,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-09 04:49:52,399 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:49:52,400 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:49:52,401 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_21_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-09 04:49:52,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:49:52,409 INFO L85 PathProgramCache]: Analyzing trace with hash -488469868, now seen corresponding path program 1 times [2024-11-09 04:49:52,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:49:52,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386147245] [2024-11-09 04:49:52,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:49:52,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:49:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:49:53,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:49:53,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:49:53,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386147245] [2024-11-09 04:49:53,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386147245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:49:53,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:49:53,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 04:49:53,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036259090] [2024-11-09 04:49:53,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:49:53,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 04:49:53,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:49:53,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 04:49:53,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:49:53,103 INFO L87 Difference]: Start difference. First operand has 24 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 19 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:53,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:49:53,263 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2024-11-09 04:49:53,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:49:53,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-09 04:49:53,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:49:53,274 INFO L225 Difference]: With dead ends: 51 [2024-11-09 04:49:53,274 INFO L226 Difference]: Without dead ends: 25 [2024-11-09 04:49:53,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 04:49:53,281 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 5 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:49:53,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 83 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:49:53,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-09 04:49:53,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2024-11-09 04:49:53,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 04:49:53,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2024-11-09 04:49:53,316 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 8 [2024-11-09 04:49:53,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:49:53,316 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2024-11-09 04:49:53,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:53,317 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2024-11-09 04:49:53,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 04:49:53,318 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:49:53,318 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:49:53,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 04:49:53,319 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_21_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-09 04:49:53,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:49:53,320 INFO L85 PathProgramCache]: Analyzing trace with hash 2037303351, now seen corresponding path program 1 times [2024-11-09 04:49:53,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:49:53,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935047924] [2024-11-09 04:49:53,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:49:53,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:49:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:49:53,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:49:53,402 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:49:53,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935047924] [2024-11-09 04:49:53,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935047924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:49:53,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:49:53,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:49:53,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295003020] [2024-11-09 04:49:53,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:49:53,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:49:53,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:49:53,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:49:53,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:49:53,407 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:53,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:49:53,438 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2024-11-09 04:49:53,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:49:53,439 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-09 04:49:53,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:49:53,439 INFO L225 Difference]: With dead ends: 23 [2024-11-09 04:49:53,440 INFO L226 Difference]: Without dead ends: 22 [2024-11-09 04:49:53,440 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:49:53,441 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:49:53,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:49:53,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-09 04:49:53,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-09 04:49:53,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 04:49:53,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-11-09 04:49:53,447 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 9 [2024-11-09 04:49:53,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:49:53,447 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-11-09 04:49:53,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:53,448 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-11-09 04:49:53,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 04:49:53,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:49:53,448 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:49:53,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 04:49:53,449 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_21_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-09 04:49:53,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:49:53,450 INFO L85 PathProgramCache]: Analyzing trace with hash 402286886, now seen corresponding path program 1 times [2024-11-09 04:49:53,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:49:53,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856995786] [2024-11-09 04:49:53,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:49:53,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:49:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:49:53,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:49:53,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:49:53,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856995786] [2024-11-09 04:49:53,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856995786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:49:53,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:49:53,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 04:49:53,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140327164] [2024-11-09 04:49:53,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:49:53,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 04:49:53,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:49:53,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 04:49:53,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 04:49:53,752 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:53,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:49:53,891 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2024-11-09 04:49:53,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 04:49:53,893 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-09 04:49:53,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:49:53,896 INFO L225 Difference]: With dead ends: 28 [2024-11-09 04:49:53,898 INFO L226 Difference]: Without dead ends: 27 [2024-11-09 04:49:53,899 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 04:49:53,903 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 11 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:49:53,904 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 61 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:49:53,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-09 04:49:53,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2024-11-09 04:49:53,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 04:49:53,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2024-11-09 04:49:53,920 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 13 [2024-11-09 04:49:53,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:49:53,921 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2024-11-09 04:49:53,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:53,922 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2024-11-09 04:49:53,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 04:49:53,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:49:53,924 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:49:53,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 04:49:53,925 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-09 04:49:53,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:49:53,925 INFO L85 PathProgramCache]: Analyzing trace with hash -986541066, now seen corresponding path program 1 times [2024-11-09 04:49:53,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:49:53,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453205393] [2024-11-09 04:49:53,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:49:53,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:49:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:49:54,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:49:54,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:49:54,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453205393] [2024-11-09 04:49:54,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453205393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:49:54,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788249917] [2024-11-09 04:49:54,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:49:54,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:49:54,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:49:54,460 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:49:54,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 04:49:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:49:54,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 04:49:54,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:49:54,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 04:49:54,898 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:49:54,898 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:49:55,447 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:49:55,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788249917] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:49:55,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [291041409] [2024-11-09 04:49:55,475 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-09 04:49:55,475 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:49:55,481 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 04:49:55,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:49:55,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 24 [2024-11-09 04:49:55,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129100685] [2024-11-09 04:49:55,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:49:55,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 04:49:55,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:49:55,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 04:49:55,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2024-11-09 04:49:55,486 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 24 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 21 states have internal predecessors, (29), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 04:49:55,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:49:55,791 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2024-11-09 04:49:55,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 04:49:55,792 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 21 states have internal predecessors, (29), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 18 [2024-11-09 04:49:55,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:49:55,793 INFO L225 Difference]: With dead ends: 46 [2024-11-09 04:49:55,795 INFO L226 Difference]: Without dead ends: 26 [2024-11-09 04:49:55,796 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=167, Invalid=645, Unknown=0, NotChecked=0, Total=812 [2024-11-09 04:49:55,797 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:49:55,798 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 80 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:49:55,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-09 04:49:55,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-11-09 04:49:55,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 04:49:55,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2024-11-09 04:49:55,813 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 18 [2024-11-09 04:49:55,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:49:55,813 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2024-11-09 04:49:55,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 21 states have internal predecessors, (29), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 04:49:55,814 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2024-11-09 04:49:55,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-09 04:49:55,815 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:49:55,815 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:49:55,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 04:49:56,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:49:56,016 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-09 04:49:56,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:49:56,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1949892678, now seen corresponding path program 2 times [2024-11-09 04:49:56,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:49:56,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95272833] [2024-11-09 04:49:56,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:49:56,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:49:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:49:56,973 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 04:49:56,973 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:49:56,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95272833] [2024-11-09 04:49:56,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95272833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:49:56,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103126194] [2024-11-09 04:49:56,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:49:56,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:49:56,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:49:56,980 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:49:56,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 04:49:57,074 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 04:49:57,074 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:49:57,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-09 04:49:57,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:49:57,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 04:49:57,611 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 04:49:57,611 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:49:59,237 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:49:59,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103126194] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:49:59,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [255201234] [2024-11-09 04:49:59,239 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-09 04:49:59,240 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:49:59,240 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 04:49:59,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:49:59,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 21] total 42 [2024-11-09 04:49:59,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738891020] [2024-11-09 04:49:59,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:49:59,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-09 04:49:59,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:49:59,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-09 04:49:59,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=1439, Unknown=0, NotChecked=0, Total=1722 [2024-11-09 04:49:59,245 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 42 states, 32 states have (on average 1.46875) internal successors, (47), 36 states have internal predecessors, (47), 11 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (12), 8 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-09 04:49:59,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:49:59,842 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2024-11-09 04:49:59,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 04:49:59,843 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 32 states have (on average 1.46875) internal successors, (47), 36 states have internal predecessors, (47), 11 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (12), 8 states have call predecessors, (12), 9 states have call successors, (12) Word has length 32 [2024-11-09 04:49:59,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:49:59,844 INFO L225 Difference]: With dead ends: 54 [2024-11-09 04:49:59,844 INFO L226 Difference]: Without dead ends: 30 [2024-11-09 04:49:59,845 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=413, Invalid=2137, Unknown=0, NotChecked=0, Total=2550 [2024-11-09 04:49:59,846 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 27 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:49:59,847 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 110 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 04:49:59,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-09 04:49:59,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-09 04:49:59,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 6 states have return successors, (7), 6 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-09 04:49:59,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2024-11-09 04:49:59,855 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 32 [2024-11-09 04:49:59,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:49:59,856 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2024-11-09 04:49:59,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 32 states have (on average 1.46875) internal successors, (47), 36 states have internal predecessors, (47), 11 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (12), 8 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-09 04:49:59,856 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2024-11-09 04:49:59,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-09 04:49:59,857 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:49:59,857 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:49:59,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 04:50:00,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:50:00,062 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-09 04:50:00,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:50:00,062 INFO L85 PathProgramCache]: Analyzing trace with hash -956296042, now seen corresponding path program 3 times [2024-11-09 04:50:00,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:50:00,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196089355] [2024-11-09 04:50:00,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:50:00,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:50:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:50:01,268 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 40 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-09 04:50:01,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:50:01,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196089355] [2024-11-09 04:50:01,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196089355] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:50:01,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676769670] [2024-11-09 04:50:01,269 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 04:50:01,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:50:01,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:50:01,271 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:50:01,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 04:50:01,376 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 04:50:01,376 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:50:01,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-11-09 04:50:01,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:50:01,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 04:50:02,080 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-09 04:50:02,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:50:05,322 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:50:05,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676769670] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:50:05,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1481075596] [2024-11-09 04:50:05,324 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-09 04:50:05,325 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:50:05,325 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 04:50:05,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:50:05,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 31] total 55 [2024-11-09 04:50:05,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123099463] [2024-11-09 04:50:05,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:50:05,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-09 04:50:05,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:50:05,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-09 04:50:05,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=2474, Unknown=0, NotChecked=0, Total=2970 [2024-11-09 04:50:05,330 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand has 55 states, 43 states have (on average 1.441860465116279) internal successors, (62), 47 states have internal predecessors, (62), 13 states have call successors, (13), 9 states have call predecessors, (13), 13 states have return successors, (18), 12 states have call predecessors, (18), 11 states have call successors, (18) [2024-11-09 04:50:05,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:50:05,975 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2024-11-09 04:50:05,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 04:50:05,976 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 43 states have (on average 1.441860465116279) internal successors, (62), 47 states have internal predecessors, (62), 13 states have call successors, (13), 9 states have call predecessors, (13), 13 states have return successors, (18), 12 states have call predecessors, (18), 11 states have call successors, (18) Word has length 46 [2024-11-09 04:50:05,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:50:05,977 INFO L225 Difference]: With dead ends: 60 [2024-11-09 04:50:05,978 INFO L226 Difference]: Without dead ends: 32 [2024-11-09 04:50:05,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 65 SyntacticMatches, 4 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1586 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=707, Invalid=3453, Unknown=0, NotChecked=0, Total=4160 [2024-11-09 04:50:05,980 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 30 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:50:05,980 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 150 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 04:50:05,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-09 04:50:05,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-09 04:50:05,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 4 states have call successors, (4), 3 states have call predecessors, (4), 7 states have return successors, (8), 7 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-09 04:50:05,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2024-11-09 04:50:05,990 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 46 [2024-11-09 04:50:05,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:50:05,991 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2024-11-09 04:50:05,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 43 states have (on average 1.441860465116279) internal successors, (62), 47 states have internal predecessors, (62), 13 states have call successors, (13), 9 states have call predecessors, (13), 13 states have return successors, (18), 12 states have call predecessors, (18), 11 states have call successors, (18) [2024-11-09 04:50:05,992 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2024-11-09 04:50:05,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-09 04:50:05,993 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:50:05,993 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:50:06,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 04:50:06,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:50:06,194 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-09 04:50:06,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:50:06,194 INFO L85 PathProgramCache]: Analyzing trace with hash 846289584, now seen corresponding path program 4 times [2024-11-09 04:50:06,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:50:06,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760093738] [2024-11-09 04:50:06,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:50:06,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:50:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:50:10,384 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-09 04:50:10,384 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:50:10,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760093738] [2024-11-09 04:50:10,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760093738] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:50:10,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658320124] [2024-11-09 04:50:10,385 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 04:50:10,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:50:10,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:50:10,387 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:50:10,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 04:50:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:50:10,512 INFO L255 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-09 04:50:10,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:50:10,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-09 04:50:10,527 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 04:50:10,546 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 [2024-11-09 04:50:12,729 WARN L851 $PredicateComparison]: unable to prove that (or (exists ((|v_old(#memory_int)_AFTER_CALL_17| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_old(#memory_int)_AFTER_CALL_17| |c_#memory_int|))) (and (= |v_old(#memory_int)_AFTER_CALL_17| (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_old(#memory_int)_AFTER_CALL_17| |c_func_to_recursive_line_21_to_21_0_#in~b.base|))) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| .cse0) (= (store |v_old(#memory_int)_AFTER_CALL_17| .cse0 (select |c_#memory_int| .cse0)) |c_#memory_int|)))) (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |c_#memory_int| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |c_#memory_int|)) is different from false [2024-11-09 04:50:14,732 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_old(#memory_int)_AFTER_CALL_17| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_old(#memory_int)_AFTER_CALL_17| |c_#memory_int|))) (and (= |v_old(#memory_int)_AFTER_CALL_17| (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_old(#memory_int)_AFTER_CALL_17| |c_func_to_recursive_line_21_to_21_0_#in~b.base|))) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| .cse0) (= (store |v_old(#memory_int)_AFTER_CALL_17| .cse0 (select |c_#memory_int| .cse0)) |c_#memory_int|)))) (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |c_#memory_int| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |c_#memory_int|)) is different from true [2024-11-09 04:50:16,767 WARN L851 $PredicateComparison]: unable to prove that (or (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |c_#memory_int| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |c_#memory_int|) (exists ((|v_#memory_int_BEFORE_CALL_47| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_#memory_int_BEFORE_CALL_47| |c_#memory_int|))) (and (= (store |v_#memory_int_BEFORE_CALL_47| .cse0 (select |c_#memory_int| .cse0)) |c_#memory_int|) (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_#memory_int_BEFORE_CALL_47| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |v_#memory_int_BEFORE_CALL_47|) (= .cse0 |c_func_to_recursive_line_21_to_21_0_#in~b.base|))))) is different from false [2024-11-09 04:50:18,769 WARN L873 $PredicateComparison]: unable to prove that (or (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |c_#memory_int| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |c_#memory_int|) (exists ((|v_#memory_int_BEFORE_CALL_47| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_#memory_int_BEFORE_CALL_47| |c_#memory_int|))) (and (= (store |v_#memory_int_BEFORE_CALL_47| .cse0 (select |c_#memory_int| .cse0)) |c_#memory_int|) (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_#memory_int_BEFORE_CALL_47| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |v_#memory_int_BEFORE_CALL_47|) (= .cse0 |c_func_to_recursive_line_21_to_21_0_#in~b.base|))))) is different from true [2024-11-09 04:50:20,808 WARN L851 $PredicateComparison]: unable to prove that (or (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |c_#memory_int| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |c_#memory_int|) (exists ((|v_old(#memory_int)_AFTER_CALL_19| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_old(#memory_int)_AFTER_CALL_19| |c_#memory_int|))) (and (= (store |v_old(#memory_int)_AFTER_CALL_19| .cse0 (select |c_#memory_int| .cse0)) |c_#memory_int|) (= |v_old(#memory_int)_AFTER_CALL_19| (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_old(#memory_int)_AFTER_CALL_19| |c_func_to_recursive_line_21_to_21_0_#in~b.base|))) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| .cse0))))) is different from false [2024-11-09 04:50:22,810 WARN L873 $PredicateComparison]: unable to prove that (or (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |c_#memory_int| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |c_#memory_int|) (exists ((|v_old(#memory_int)_AFTER_CALL_19| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_old(#memory_int)_AFTER_CALL_19| |c_#memory_int|))) (and (= (store |v_old(#memory_int)_AFTER_CALL_19| .cse0 (select |c_#memory_int| .cse0)) |c_#memory_int|) (= |v_old(#memory_int)_AFTER_CALL_19| (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_old(#memory_int)_AFTER_CALL_19| |c_func_to_recursive_line_21_to_21_0_#in~b.base|))) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| .cse0))))) is different from true [2024-11-09 04:50:22,984 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 94 trivial. 15 not checked. [2024-11-09 04:50:22,984 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:50:23,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658320124] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:50:23,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [738277882] [2024-11-09 04:50:23,262 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-09 04:50:23,262 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:50:23,262 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 04:50:23,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 04:50:23,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 13 [2024-11-09 04:50:23,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105466833] [2024-11-09 04:50:23,267 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 04:50:23,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 04:50:23,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:50:23,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 04:50:23,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=168, Unknown=9, NotChecked=84, Total=306 [2024-11-09 04:50:23,271 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 15 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-09 04:50:25,394 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |c_#memory_int| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |c_#memory_int|))) (and (= (store |c_old(#memory_int)| c_func_to_recursive_line_21_to_21_0_~b.base (select |c_#memory_int| c_func_to_recursive_line_21_to_21_0_~b.base)) |c_#memory_int|) (or .cse0 (exists ((|v_#memory_int_BEFORE_CALL_47| (Array Int (Array Int Int)))) (let ((.cse1 (@diff |v_#memory_int_BEFORE_CALL_47| |c_#memory_int|))) (and (= (store |v_#memory_int_BEFORE_CALL_47| .cse1 (select |c_#memory_int| .cse1)) |c_#memory_int|) (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_#memory_int_BEFORE_CALL_47| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |v_#memory_int_BEFORE_CALL_47|) (= .cse1 |c_func_to_recursive_line_21_to_21_0_#in~b.base|))))) (or (exists ((|v_old(#memory_int)_AFTER_CALL_17| (Array Int (Array Int Int)))) (let ((.cse2 (@diff |v_old(#memory_int)_AFTER_CALL_17| |c_#memory_int|))) (and (= |v_old(#memory_int)_AFTER_CALL_17| (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_old(#memory_int)_AFTER_CALL_17| |c_func_to_recursive_line_21_to_21_0_#in~b.base|))) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| .cse2) (= (store |v_old(#memory_int)_AFTER_CALL_17| .cse2 (select |c_#memory_int| .cse2)) |c_#memory_int|)))) .cse0) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| c_func_to_recursive_line_21_to_21_0_~b.base) (or .cse0 (exists ((|v_old(#memory_int)_AFTER_CALL_19| (Array Int (Array Int Int)))) (let ((.cse3 (@diff |v_old(#memory_int)_AFTER_CALL_19| |c_#memory_int|))) (and (= (store |v_old(#memory_int)_AFTER_CALL_19| .cse3 (select |c_#memory_int| .cse3)) |c_#memory_int|) (= |v_old(#memory_int)_AFTER_CALL_19| (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_old(#memory_int)_AFTER_CALL_19| |c_func_to_recursive_line_21_to_21_0_#in~b.base|))) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| .cse3))))))) is different from false [2024-11-09 04:50:25,401 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |c_#memory_int| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |c_#memory_int|))) (and (= (store |c_old(#memory_int)| c_func_to_recursive_line_21_to_21_0_~b.base (select |c_#memory_int| c_func_to_recursive_line_21_to_21_0_~b.base)) |c_#memory_int|) (or .cse0 (exists ((|v_#memory_int_BEFORE_CALL_47| (Array Int (Array Int Int)))) (let ((.cse1 (@diff |v_#memory_int_BEFORE_CALL_47| |c_#memory_int|))) (and (= (store |v_#memory_int_BEFORE_CALL_47| .cse1 (select |c_#memory_int| .cse1)) |c_#memory_int|) (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_#memory_int_BEFORE_CALL_47| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |v_#memory_int_BEFORE_CALL_47|) (= .cse1 |c_func_to_recursive_line_21_to_21_0_#in~b.base|))))) (or (exists ((|v_old(#memory_int)_AFTER_CALL_17| (Array Int (Array Int Int)))) (let ((.cse2 (@diff |v_old(#memory_int)_AFTER_CALL_17| |c_#memory_int|))) (and (= |v_old(#memory_int)_AFTER_CALL_17| (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_old(#memory_int)_AFTER_CALL_17| |c_func_to_recursive_line_21_to_21_0_#in~b.base|))) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| .cse2) (= (store |v_old(#memory_int)_AFTER_CALL_17| .cse2 (select |c_#memory_int| .cse2)) |c_#memory_int|)))) .cse0) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| c_func_to_recursive_line_21_to_21_0_~b.base) (or .cse0 (exists ((|v_old(#memory_int)_AFTER_CALL_19| (Array Int (Array Int Int)))) (let ((.cse3 (@diff |v_old(#memory_int)_AFTER_CALL_19| |c_#memory_int|))) (and (= (store |v_old(#memory_int)_AFTER_CALL_19| .cse3 (select |c_#memory_int| .cse3)) |c_#memory_int|) (= |v_old(#memory_int)_AFTER_CALL_19| (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_old(#memory_int)_AFTER_CALL_19| |c_func_to_recursive_line_21_to_21_0_#in~b.base|))) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| .cse3))))))) is different from true [2024-11-09 04:50:25,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:50:25,474 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2024-11-09 04:50:25,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 04:50:25,475 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 53 [2024-11-09 04:50:25,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:50:25,476 INFO L225 Difference]: With dead ends: 40 [2024-11-09 04:50:25,476 INFO L226 Difference]: Without dead ends: 38 [2024-11-09 04:50:25,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 64 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=79, Invalid=268, Unknown=11, NotChecked=148, Total=506 [2024-11-09 04:50:25,477 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 8 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:50:25,478 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 54 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 130 Invalid, 0 Unknown, 91 Unchecked, 0.1s Time] [2024-11-09 04:50:25,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-09 04:50:25,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-09 04:50:25,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 5 states have call successors, (5), 4 states have call predecessors, (5), 7 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-09 04:50:25,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2024-11-09 04:50:25,487 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 53 [2024-11-09 04:50:25,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:50:25,487 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2024-11-09 04:50:25,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-09 04:50:25,488 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2024-11-09 04:50:25,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-09 04:50:25,490 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:50:25,490 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 04:50:25,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 04:50:25,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:50:25,695 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-09 04:50:25,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:50:25,695 INFO L85 PathProgramCache]: Analyzing trace with hash -790401520, now seen corresponding path program 1 times [2024-11-09 04:50:25,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:50:25,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266006984] [2024-11-09 04:50:25,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:50:25,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:50:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:50:33,406 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 18 proven. 59 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-11-09 04:50:33,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:50:33,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266006984] [2024-11-09 04:50:33,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266006984] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:50:33,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126929693] [2024-11-09 04:50:33,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:50:33,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:50:33,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:50:33,409 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:50:33,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 04:50:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:50:33,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 130 conjuncts are in the unsatisfiable core [2024-11-09 04:50:33,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:50:33,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-09 04:50:33,619 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 04:50:33,642 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 [2024-11-09 04:50:35,932 WARN L851 $PredicateComparison]: unable to prove that (or (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |c_#memory_int| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |c_#memory_int|) (exists ((|v_#memory_int_BEFORE_CALL_62| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_#memory_int_BEFORE_CALL_62| |c_#memory_int|))) (and (= .cse0 |c_func_to_recursive_line_21_to_21_0_#in~b.base|) (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_#memory_int_BEFORE_CALL_62| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |v_#memory_int_BEFORE_CALL_62|) (= (store |v_#memory_int_BEFORE_CALL_62| .cse0 (select |c_#memory_int| .cse0)) |c_#memory_int|))))) is different from false [2024-11-09 04:50:37,934 WARN L873 $PredicateComparison]: unable to prove that (or (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |c_#memory_int| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |c_#memory_int|) (exists ((|v_#memory_int_BEFORE_CALL_62| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_#memory_int_BEFORE_CALL_62| |c_#memory_int|))) (and (= .cse0 |c_func_to_recursive_line_21_to_21_0_#in~b.base|) (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_#memory_int_BEFORE_CALL_62| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |v_#memory_int_BEFORE_CALL_62|) (= (store |v_#memory_int_BEFORE_CALL_62| .cse0 (select |c_#memory_int| .cse0)) |c_#memory_int|))))) is different from true [2024-11-09 04:50:40,081 WARN L851 $PredicateComparison]: unable to prove that (and (or (exists ((|v_#memory_int_BEFORE_CALL_66| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_#memory_int_BEFORE_CALL_66| |c_#memory_int|))) (and (= (select (select |v_#memory_int_BEFORE_CALL_66| c_func_to_recursive_line_20_to_21_0_~a.base) c_func_to_recursive_line_20_to_21_0_~a.offset) 0) (= c_func_to_recursive_line_20_to_21_0_~b.base .cse0) (= (store |v_#memory_int_BEFORE_CALL_66| .cse0 (select |c_#memory_int| .cse0)) |c_#memory_int|)))) (= (select (select |c_#memory_int| c_func_to_recursive_line_20_to_21_0_~a.base) c_func_to_recursive_line_20_to_21_0_~a.offset) 0)) (not (= c_func_to_recursive_line_20_to_21_0_~b.base c_func_to_recursive_line_20_to_21_0_~a.base))) is different from false [2024-11-09 04:50:40,084 WARN L873 $PredicateComparison]: unable to prove that (and (or (exists ((|v_#memory_int_BEFORE_CALL_66| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_#memory_int_BEFORE_CALL_66| |c_#memory_int|))) (and (= (select (select |v_#memory_int_BEFORE_CALL_66| c_func_to_recursive_line_20_to_21_0_~a.base) c_func_to_recursive_line_20_to_21_0_~a.offset) 0) (= c_func_to_recursive_line_20_to_21_0_~b.base .cse0) (= (store |v_#memory_int_BEFORE_CALL_66| .cse0 (select |c_#memory_int| .cse0)) |c_#memory_int|)))) (= (select (select |c_#memory_int| c_func_to_recursive_line_20_to_21_0_~a.base) c_func_to_recursive_line_20_to_21_0_~a.offset) 0)) (not (= c_func_to_recursive_line_20_to_21_0_~b.base c_func_to_recursive_line_20_to_21_0_~a.base))) is different from true [2024-11-09 04:50:40,146 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 23 treesize of output 3 [2024-11-09 04:50:40,174 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 [2024-11-09 04:50:42,447 WARN L851 $PredicateComparison]: unable to prove that (or (exists ((|v_old(#memory_int)_AFTER_CALL_32| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_old(#memory_int)_AFTER_CALL_32| |c_#memory_int|))) (and (= |c_#memory_int| (store |v_old(#memory_int)_AFTER_CALL_32| .cse0 (select |c_#memory_int| .cse0))) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| .cse0) (= |v_old(#memory_int)_AFTER_CALL_32| (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_old(#memory_int)_AFTER_CALL_32| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)))))) (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |c_#memory_int| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |c_#memory_int|)) is different from false [2024-11-09 04:50:44,448 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_old(#memory_int)_AFTER_CALL_32| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_old(#memory_int)_AFTER_CALL_32| |c_#memory_int|))) (and (= |c_#memory_int| (store |v_old(#memory_int)_AFTER_CALL_32| .cse0 (select |c_#memory_int| .cse0))) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| .cse0) (= |v_old(#memory_int)_AFTER_CALL_32| (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_old(#memory_int)_AFTER_CALL_32| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)))))) (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |c_#memory_int| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |c_#memory_int|)) is different from true [2024-11-09 04:50:46,502 WARN L851 $PredicateComparison]: unable to prove that (or (exists ((|v_#memory_int_BEFORE_CALL_79| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_#memory_int_BEFORE_CALL_79| |c_#memory_int|))) (and (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_#memory_int_BEFORE_CALL_79| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |v_#memory_int_BEFORE_CALL_79|) (= (store |v_#memory_int_BEFORE_CALL_79| .cse0 (select |c_#memory_int| .cse0)) |c_#memory_int|) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| .cse0)))) (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |c_#memory_int| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |c_#memory_int|)) is different from false [2024-11-09 04:50:48,504 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((|v_#memory_int_BEFORE_CALL_79| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_#memory_int_BEFORE_CALL_79| |c_#memory_int|))) (and (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_#memory_int_BEFORE_CALL_79| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |v_#memory_int_BEFORE_CALL_79|) (= (store |v_#memory_int_BEFORE_CALL_79| .cse0 (select |c_#memory_int| .cse0)) |c_#memory_int|) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| .cse0)))) (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |c_#memory_int| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |c_#memory_int|)) is different from true [2024-11-09 04:50:48,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 04:50:48,566 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 22 proven. 68 refuted. 0 times theorem prover too weak. 440 trivial. 37 not checked. [2024-11-09 04:50:48,566 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:50:48,790 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_329 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| c_func_to_recursive_line_20_to_21_0_~b.base v_ArrVal_329) c_func_to_recursive_line_20_to_21_0_~a.base) c_func_to_recursive_line_20_to_21_0_~a.offset) 2147483650))) is different from false [2024-11-09 04:50:48,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126929693] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:50:48,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1058340842] [2024-11-09 04:50:48,795 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2024-11-09 04:50:48,796 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:50:48,796 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 04:50:48,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 04:50:48,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16] total 17 [2024-11-09 04:50:48,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864328030] [2024-11-09 04:50:48,797 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 04:50:48,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 04:50:48,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:50:48,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 04:50:48,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=228, Unknown=9, NotChecked=170, Total=462 [2024-11-09 04:50:48,800 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 19 states, 16 states have (on average 1.5625) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (9), 7 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-09 04:50:50,911 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |c_#memory_int| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |c_#memory_int|))) (and (or (exists ((|v_old(#memory_int)_AFTER_CALL_32| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_old(#memory_int)_AFTER_CALL_32| |c_#memory_int|))) (and (= |c_#memory_int| (store |v_old(#memory_int)_AFTER_CALL_32| .cse0 (select |c_#memory_int| .cse0))) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| .cse0) (= |v_old(#memory_int)_AFTER_CALL_32| (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_old(#memory_int)_AFTER_CALL_32| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)))))) .cse1) (= (store |c_old(#memory_int)| c_func_to_recursive_line_21_to_21_0_~b.base (select |c_#memory_int| c_func_to_recursive_line_21_to_21_0_~b.base)) |c_#memory_int|) (or .cse1 (exists ((|v_#memory_int_BEFORE_CALL_62| (Array Int (Array Int Int)))) (let ((.cse2 (@diff |v_#memory_int_BEFORE_CALL_62| |c_#memory_int|))) (and (= .cse2 |c_func_to_recursive_line_21_to_21_0_#in~b.base|) (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_#memory_int_BEFORE_CALL_62| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |v_#memory_int_BEFORE_CALL_62|) (= (store |v_#memory_int_BEFORE_CALL_62| .cse2 (select |c_#memory_int| .cse2)) |c_#memory_int|))))) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| c_func_to_recursive_line_21_to_21_0_~b.base) (or (exists ((|v_#memory_int_BEFORE_CALL_79| (Array Int (Array Int Int)))) (let ((.cse3 (@diff |v_#memory_int_BEFORE_CALL_79| |c_#memory_int|))) (and (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_#memory_int_BEFORE_CALL_79| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |v_#memory_int_BEFORE_CALL_79|) (= (store |v_#memory_int_BEFORE_CALL_79| .cse3 (select |c_#memory_int| .cse3)) |c_#memory_int|) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| .cse3)))) .cse1))) is different from false [2024-11-09 04:50:50,917 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse1 (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |c_#memory_int| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |c_#memory_int|))) (and (or (exists ((|v_old(#memory_int)_AFTER_CALL_32| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_old(#memory_int)_AFTER_CALL_32| |c_#memory_int|))) (and (= |c_#memory_int| (store |v_old(#memory_int)_AFTER_CALL_32| .cse0 (select |c_#memory_int| .cse0))) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| .cse0) (= |v_old(#memory_int)_AFTER_CALL_32| (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_old(#memory_int)_AFTER_CALL_32| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)))))) .cse1) (= (store |c_old(#memory_int)| c_func_to_recursive_line_21_to_21_0_~b.base (select |c_#memory_int| c_func_to_recursive_line_21_to_21_0_~b.base)) |c_#memory_int|) (or .cse1 (exists ((|v_#memory_int_BEFORE_CALL_62| (Array Int (Array Int Int)))) (let ((.cse2 (@diff |v_#memory_int_BEFORE_CALL_62| |c_#memory_int|))) (and (= .cse2 |c_func_to_recursive_line_21_to_21_0_#in~b.base|) (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_#memory_int_BEFORE_CALL_62| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |v_#memory_int_BEFORE_CALL_62|) (= (store |v_#memory_int_BEFORE_CALL_62| .cse2 (select |c_#memory_int| .cse2)) |c_#memory_int|))))) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| c_func_to_recursive_line_21_to_21_0_~b.base) (or (exists ((|v_#memory_int_BEFORE_CALL_79| (Array Int (Array Int Int)))) (let ((.cse3 (@diff |v_#memory_int_BEFORE_CALL_79| |c_#memory_int|))) (and (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_#memory_int_BEFORE_CALL_79| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |v_#memory_int_BEFORE_CALL_79|) (= (store |v_#memory_int_BEFORE_CALL_79| .cse3 (select |c_#memory_int| .cse3)) |c_#memory_int|) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| .cse3)))) .cse1))) is different from true [2024-11-09 04:50:50,936 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (= (select (select |c_#memory_int| c_func_to_recursive_line_20_to_21_0_~a.base) c_func_to_recursive_line_20_to_21_0_~a.offset) 0))) (and (or (exists ((|v_#memory_int_BEFORE_CALL_66| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_#memory_int_BEFORE_CALL_66| |c_#memory_int|))) (and (= (select (select |v_#memory_int_BEFORE_CALL_66| c_func_to_recursive_line_20_to_21_0_~a.base) c_func_to_recursive_line_20_to_21_0_~a.offset) 0) (= c_func_to_recursive_line_20_to_21_0_~b.base .cse0) (= (store |v_#memory_int_BEFORE_CALL_66| .cse0 (select |c_#memory_int| .cse0)) |c_#memory_int|)))) .cse1) (not (= c_func_to_recursive_line_20_to_21_0_~b.base c_func_to_recursive_line_20_to_21_0_~a.base)) .cse1)) is different from false [2024-11-09 04:50:50,938 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse1 (= (select (select |c_#memory_int| c_func_to_recursive_line_20_to_21_0_~a.base) c_func_to_recursive_line_20_to_21_0_~a.offset) 0))) (and (or (exists ((|v_#memory_int_BEFORE_CALL_66| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_#memory_int_BEFORE_CALL_66| |c_#memory_int|))) (and (= (select (select |v_#memory_int_BEFORE_CALL_66| c_func_to_recursive_line_20_to_21_0_~a.base) c_func_to_recursive_line_20_to_21_0_~a.offset) 0) (= c_func_to_recursive_line_20_to_21_0_~b.base .cse0) (= (store |v_#memory_int_BEFORE_CALL_66| .cse0 (select |c_#memory_int| .cse0)) |c_#memory_int|)))) .cse1) (not (= c_func_to_recursive_line_20_to_21_0_~b.base c_func_to_recursive_line_20_to_21_0_~a.base)) .cse1)) is different from true [2024-11-09 04:50:51,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:50:51,050 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2024-11-09 04:50:51,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 04:50:51,051 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 1.5625) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (9), 7 states have call predecessors, (9), 4 states have call successors, (9) Word has length 106 [2024-11-09 04:50:51,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:50:51,052 INFO L225 Difference]: With dead ends: 38 [2024-11-09 04:50:51,052 INFO L226 Difference]: Without dead ends: 37 [2024-11-09 04:50:51,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 139 SyntacticMatches, 12 SemanticMatches, 29 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=106, Invalid=461, Unknown=13, NotChecked=350, Total=930 [2024-11-09 04:50:51,054 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 17 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 130 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:50:51,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 37 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 165 Invalid, 0 Unknown, 130 Unchecked, 0.1s Time] [2024-11-09 04:50:51,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-09 04:50:51,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-09 04:50:51,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 5 states have call successors, (5), 4 states have call predecessors, (5), 7 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-09 04:50:51,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2024-11-09 04:50:51,069 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 106 [2024-11-09 04:50:51,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:50:51,073 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2024-11-09 04:50:51,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 1.5625) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (9), 7 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-09 04:50:51,074 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2024-11-09 04:50:51,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-09 04:50:51,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:50:51,076 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-09 04:50:51,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 04:50:51,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:50:51,276 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-09 04:50:51,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:50:51,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1267356695, now seen corresponding path program 1 times [2024-11-09 04:50:51,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:50:51,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630711895] [2024-11-09 04:50:51,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:50:51,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:50:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:50:56,135 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 18 proven. 60 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2024-11-09 04:50:56,135 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:50:56,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630711895] [2024-11-09 04:50:56,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630711895] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:50:56,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701312099] [2024-11-09 04:50:56,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:50:56,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:50:56,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:50:56,138 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:50:56,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 04:50:56,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:50:56,300 INFO L255 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-09 04:50:56,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:50:56,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-09 04:50:56,385 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 [2024-11-09 04:50:58,568 WARN L851 $PredicateComparison]: unable to prove that (or (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |c_#memory_int| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |c_#memory_int|) (exists ((|v_#memory_int_BEFORE_CALL_90| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_#memory_int_BEFORE_CALL_90| |c_#memory_int|))) (and (= .cse0 |c_func_to_recursive_line_21_to_21_0_#in~b.base|) (= (store |v_#memory_int_BEFORE_CALL_90| .cse0 (select |c_#memory_int| .cse0)) |c_#memory_int|) (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_#memory_int_BEFORE_CALL_90| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |v_#memory_int_BEFORE_CALL_90|))))) is different from false [2024-11-09 04:51:00,570 WARN L873 $PredicateComparison]: unable to prove that (or (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |c_#memory_int| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |c_#memory_int|) (exists ((|v_#memory_int_BEFORE_CALL_90| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_#memory_int_BEFORE_CALL_90| |c_#memory_int|))) (and (= .cse0 |c_func_to_recursive_line_21_to_21_0_#in~b.base|) (= (store |v_#memory_int_BEFORE_CALL_90| .cse0 (select |c_#memory_int| .cse0)) |c_#memory_int|) (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_#memory_int_BEFORE_CALL_90| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |v_#memory_int_BEFORE_CALL_90|))))) is different from true [2024-11-09 04:51:02,596 WARN L851 $PredicateComparison]: unable to prove that (or (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |c_#memory_int| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |c_#memory_int|) (exists ((|v_old(#memory_int)_AFTER_CALL_46| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_old(#memory_int)_AFTER_CALL_46| |c_#memory_int|))) (and (= |v_old(#memory_int)_AFTER_CALL_46| (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_old(#memory_int)_AFTER_CALL_46| |c_func_to_recursive_line_21_to_21_0_#in~b.base|))) (= |c_#memory_int| (store |v_old(#memory_int)_AFTER_CALL_46| .cse0 (select |c_#memory_int| .cse0))) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| .cse0))))) is different from false [2024-11-09 04:51:04,598 WARN L873 $PredicateComparison]: unable to prove that (or (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |c_#memory_int| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |c_#memory_int|) (exists ((|v_old(#memory_int)_AFTER_CALL_46| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_old(#memory_int)_AFTER_CALL_46| |c_#memory_int|))) (and (= |v_old(#memory_int)_AFTER_CALL_46| (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_old(#memory_int)_AFTER_CALL_46| |c_func_to_recursive_line_21_to_21_0_#in~b.base|))) (= |c_#memory_int| (store |v_old(#memory_int)_AFTER_CALL_46| .cse0 (select |c_#memory_int| .cse0))) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| .cse0))))) is different from true [2024-11-09 04:51:06,623 WARN L851 $PredicateComparison]: unable to prove that (or (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |c_#memory_int| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |c_#memory_int|) (exists ((|v_old(#memory_int)_AFTER_CALL_47| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_old(#memory_int)_AFTER_CALL_47| |c_#memory_int|))) (and (= (store |v_old(#memory_int)_AFTER_CALL_47| .cse0 (select |c_#memory_int| .cse0)) |c_#memory_int|) (= |v_old(#memory_int)_AFTER_CALL_47| (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_old(#memory_int)_AFTER_CALL_47| |c_func_to_recursive_line_21_to_21_0_#in~b.base|))) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| .cse0))))) is different from false [2024-11-09 04:51:08,624 WARN L873 $PredicateComparison]: unable to prove that (or (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |c_#memory_int| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |c_#memory_int|) (exists ((|v_old(#memory_int)_AFTER_CALL_47| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_old(#memory_int)_AFTER_CALL_47| |c_#memory_int|))) (and (= (store |v_old(#memory_int)_AFTER_CALL_47| .cse0 (select |c_#memory_int| .cse0)) |c_#memory_int|) (= |v_old(#memory_int)_AFTER_CALL_47| (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_old(#memory_int)_AFTER_CALL_47| |c_func_to_recursive_line_21_to_21_0_#in~b.base|))) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| .cse0))))) is different from true [2024-11-09 04:51:10,669 WARN L851 $PredicateComparison]: unable to prove that (or (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |c_#memory_int| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |c_#memory_int|) (exists ((|v_old(#memory_int)_AFTER_CALL_49| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_old(#memory_int)_AFTER_CALL_49| |c_#memory_int|))) (and (= |c_#memory_int| (store |v_old(#memory_int)_AFTER_CALL_49| .cse0 (select |c_#memory_int| .cse0))) (= |v_old(#memory_int)_AFTER_CALL_49| (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_old(#memory_int)_AFTER_CALL_49| |c_func_to_recursive_line_21_to_21_0_#in~b.base|))) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| .cse0))))) is different from false [2024-11-09 04:51:12,671 WARN L873 $PredicateComparison]: unable to prove that (or (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |c_#memory_int| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |c_#memory_int|) (exists ((|v_old(#memory_int)_AFTER_CALL_49| (Array Int (Array Int Int)))) (let ((.cse0 (@diff |v_old(#memory_int)_AFTER_CALL_49| |c_#memory_int|))) (and (= |c_#memory_int| (store |v_old(#memory_int)_AFTER_CALL_49| .cse0 (select |c_#memory_int| .cse0))) (= |v_old(#memory_int)_AFTER_CALL_49| (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_old(#memory_int)_AFTER_CALL_49| |c_func_to_recursive_line_21_to_21_0_#in~b.base|))) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| .cse0))))) is different from true [2024-11-09 04:51:12,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 04:51:12,738 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 306 proven. 22 refuted. 0 times theorem prover too weak. 222 trivial. 18 not checked. [2024-11-09 04:51:12,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:51:12,945 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_432 (Array Int Int))) (< (select (select (store |c_#memory_int| c_func_to_recursive_line_20_to_21_0_~b.base v_ArrVal_432) c_func_to_recursive_line_20_to_21_0_~a.base) c_func_to_recursive_line_20_to_21_0_~a.offset) 2147483647)) is different from false [2024-11-09 04:51:12,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701312099] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:51:12,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1388103282] [2024-11-09 04:51:12,948 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2024-11-09 04:51:12,948 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:51:12,949 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 04:51:12,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 04:51:12,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16] total 24 [2024-11-09 04:51:12,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783652899] [2024-11-09 04:51:12,950 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 04:51:12,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 04:51:12,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:51:12,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 04:51:12,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=430, Unknown=9, NotChecked=230, Total=756 [2024-11-09 04:51:12,952 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 25 states, 20 states have (on average 2.05) internal successors, (41), 16 states have internal predecessors, (41), 9 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (12), 10 states have call predecessors, (12), 7 states have call successors, (12) [2024-11-09 04:51:15,081 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |c_#memory_int| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |c_#memory_int|))) (and (or .cse0 (exists ((|v_#memory_int_BEFORE_CALL_90| (Array Int (Array Int Int)))) (let ((.cse1 (@diff |v_#memory_int_BEFORE_CALL_90| |c_#memory_int|))) (and (= .cse1 |c_func_to_recursive_line_21_to_21_0_#in~b.base|) (= (store |v_#memory_int_BEFORE_CALL_90| .cse1 (select |c_#memory_int| .cse1)) |c_#memory_int|) (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_#memory_int_BEFORE_CALL_90| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |v_#memory_int_BEFORE_CALL_90|))))) (or .cse0 (exists ((|v_old(#memory_int)_AFTER_CALL_49| (Array Int (Array Int Int)))) (let ((.cse2 (@diff |v_old(#memory_int)_AFTER_CALL_49| |c_#memory_int|))) (and (= |c_#memory_int| (store |v_old(#memory_int)_AFTER_CALL_49| .cse2 (select |c_#memory_int| .cse2))) (= |v_old(#memory_int)_AFTER_CALL_49| (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_old(#memory_int)_AFTER_CALL_49| |c_func_to_recursive_line_21_to_21_0_#in~b.base|))) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| .cse2))))) (or .cse0 (exists ((|v_old(#memory_int)_AFTER_CALL_47| (Array Int (Array Int Int)))) (let ((.cse3 (@diff |v_old(#memory_int)_AFTER_CALL_47| |c_#memory_int|))) (and (= (store |v_old(#memory_int)_AFTER_CALL_47| .cse3 (select |c_#memory_int| .cse3)) |c_#memory_int|) (= |v_old(#memory_int)_AFTER_CALL_47| (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_old(#memory_int)_AFTER_CALL_47| |c_func_to_recursive_line_21_to_21_0_#in~b.base|))) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| .cse3))))) (or .cse0 (exists ((|v_old(#memory_int)_AFTER_CALL_46| (Array Int (Array Int Int)))) (let ((.cse4 (@diff |v_old(#memory_int)_AFTER_CALL_46| |c_#memory_int|))) (and (= |v_old(#memory_int)_AFTER_CALL_46| (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_old(#memory_int)_AFTER_CALL_46| |c_func_to_recursive_line_21_to_21_0_#in~b.base|))) (= |c_#memory_int| (store |v_old(#memory_int)_AFTER_CALL_46| .cse4 (select |c_#memory_int| .cse4))) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| .cse4))))) (= (store |c_old(#memory_int)| c_func_to_recursive_line_21_to_21_0_~b.base (select |c_#memory_int| c_func_to_recursive_line_21_to_21_0_~b.base)) |c_#memory_int|) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| c_func_to_recursive_line_21_to_21_0_~b.base))) is different from false [2024-11-09 04:51:17,084 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |c_#memory_int| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |c_#memory_int|))) (and (or .cse0 (exists ((|v_#memory_int_BEFORE_CALL_90| (Array Int (Array Int Int)))) (let ((.cse1 (@diff |v_#memory_int_BEFORE_CALL_90| |c_#memory_int|))) (and (= .cse1 |c_func_to_recursive_line_21_to_21_0_#in~b.base|) (= (store |v_#memory_int_BEFORE_CALL_90| .cse1 (select |c_#memory_int| .cse1)) |c_#memory_int|) (= (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_#memory_int_BEFORE_CALL_90| |c_func_to_recursive_line_21_to_21_0_#in~b.base|)) |v_#memory_int_BEFORE_CALL_90|))))) (or .cse0 (exists ((|v_old(#memory_int)_AFTER_CALL_49| (Array Int (Array Int Int)))) (let ((.cse2 (@diff |v_old(#memory_int)_AFTER_CALL_49| |c_#memory_int|))) (and (= |c_#memory_int| (store |v_old(#memory_int)_AFTER_CALL_49| .cse2 (select |c_#memory_int| .cse2))) (= |v_old(#memory_int)_AFTER_CALL_49| (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_old(#memory_int)_AFTER_CALL_49| |c_func_to_recursive_line_21_to_21_0_#in~b.base|))) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| .cse2))))) (or .cse0 (exists ((|v_old(#memory_int)_AFTER_CALL_47| (Array Int (Array Int Int)))) (let ((.cse3 (@diff |v_old(#memory_int)_AFTER_CALL_47| |c_#memory_int|))) (and (= (store |v_old(#memory_int)_AFTER_CALL_47| .cse3 (select |c_#memory_int| .cse3)) |c_#memory_int|) (= |v_old(#memory_int)_AFTER_CALL_47| (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_old(#memory_int)_AFTER_CALL_47| |c_func_to_recursive_line_21_to_21_0_#in~b.base|))) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| .cse3))))) (or .cse0 (exists ((|v_old(#memory_int)_AFTER_CALL_46| (Array Int (Array Int Int)))) (let ((.cse4 (@diff |v_old(#memory_int)_AFTER_CALL_46| |c_#memory_int|))) (and (= |v_old(#memory_int)_AFTER_CALL_46| (store |c_old(#memory_int)| |c_func_to_recursive_line_21_to_21_0_#in~b.base| (select |v_old(#memory_int)_AFTER_CALL_46| |c_func_to_recursive_line_21_to_21_0_#in~b.base|))) (= |c_#memory_int| (store |v_old(#memory_int)_AFTER_CALL_46| .cse4 (select |c_#memory_int| .cse4))) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| .cse4))))) (= (store |c_old(#memory_int)| c_func_to_recursive_line_21_to_21_0_~b.base (select |c_#memory_int| c_func_to_recursive_line_21_to_21_0_~b.base)) |c_#memory_int|) (= |c_func_to_recursive_line_21_to_21_0_#in~b.base| c_func_to_recursive_line_21_to_21_0_~b.base))) is different from true [2024-11-09 04:51:17,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:51:17,373 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2024-11-09 04:51:17,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 04:51:17,374 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 20 states have (on average 2.05) internal successors, (41), 16 states have internal predecessors, (41), 9 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (12), 10 states have call predecessors, (12), 7 states have call successors, (12) Word has length 107 [2024-11-09 04:51:17,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:51:17,375 INFO L225 Difference]: With dead ends: 45 [2024-11-09 04:51:17,375 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 04:51:17,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 140 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=278, Invalid=1141, Unknown=11, NotChecked=462, Total=1892 [2024-11-09 04:51:17,377 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 30 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 155 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:51:17,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 43 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 167 Invalid, 0 Unknown, 155 Unchecked, 0.1s Time] [2024-11-09 04:51:17,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 04:51:17,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 04:51:17,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:51:17,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 04:51:17,379 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 107 [2024-11-09 04:51:17,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:51:17,379 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 04:51:17,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 20 states have (on average 2.05) internal successors, (41), 16 states have internal predecessors, (41), 9 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (12), 10 states have call predecessors, (12), 7 states have call successors, (12) [2024-11-09 04:51:17,379 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 04:51:17,379 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 04:51:17,381 INFO L782 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2024-11-09 04:51:17,381 INFO L782 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2024-11-09 04:51:17,382 INFO L782 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_21_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2024-11-09 04:51:17,382 INFO L782 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_21_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2024-11-09 04:51:17,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 04:51:17,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:51:17,585 INFO L407 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1] [2024-11-09 04:51:17,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 04:51:18,419 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 04:51:18,425 WARN L162 FloydHoareUtils]: Requires clause for func_to_recursive_line_20_to_21_0 contained old-variable. Original clause: (and (= |#memory_int| |old(#memory_int)|) (let ((.cse0 (= |func_to_recursive_line_20_to_21_0_#in~b.offset| 0)) (.cse1 (select (select |old(#memory_int)| |func_to_recursive_line_20_to_21_0_#in~a.base|) |func_to_recursive_line_20_to_21_0_#in~a.offset|)) (.cse2 (not (= |func_to_recursive_line_20_to_21_0_#in~a.base| |func_to_recursive_line_20_to_21_0_#in~b.base|)))) (or (and .cse0 (<= 1 .cse1) .cse2) (and .cse0 (= .cse1 0) .cse2)))) Eliminated clause: (let ((.cse0 (= |func_to_recursive_line_20_to_21_0_#in~b.offset| 0)) (.cse2 (not (= |func_to_recursive_line_20_to_21_0_#in~a.base| |func_to_recursive_line_20_to_21_0_#in~b.base|))) (.cse1 (select (select |#memory_int| |func_to_recursive_line_20_to_21_0_#in~a.base|) |func_to_recursive_line_20_to_21_0_#in~a.offset|))) (or (and .cse0 (<= 1 .cse1) .cse2) (and .cse0 .cse2 (= .cse1 0)))) [2024-11-09 04:51:18,433 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~b!offset [2024-11-09 04:51:18,436 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int [2024-11-09 04:51:18,437 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int,GLOBAL] [2024-11-09 04:51:18,437 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int,GLOBAL],[IdentifierExpression[#in~a!base,]]] [2024-11-09 04:51:18,437 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~a!base [2024-11-09 04:51:18,437 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~b!base [2024-11-09 04:51:18,437 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~b!offset [2024-11-09 04:51:18,438 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~a!base [2024-11-09 04:51:18,438 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~b!base [2024-11-09 04:51:18,438 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int [2024-11-09 04:51:18,438 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int,GLOBAL] [2024-11-09 04:51:18,438 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int,GLOBAL],[IdentifierExpression[#in~a!base,]]] [2024-11-09 04:51:18,438 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~b!offset [2024-11-09 04:51:18,439 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int [2024-11-09 04:51:18,439 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int,GLOBAL]] [2024-11-09 04:51:18,439 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int,GLOBAL]],[IdentifierExpression[#in~a!base,]]] [2024-11-09 04:51:18,439 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~a!base [2024-11-09 04:51:18,439 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~b!base [2024-11-09 04:51:18,439 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~b!offset [2024-11-09 04:51:18,440 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int [2024-11-09 04:51:18,440 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int,GLOBAL]] [2024-11-09 04:51:18,440 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int,GLOBAL]],[IdentifierExpression[#in~a!base,]]] [2024-11-09 04:51:18,440 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~a!base [2024-11-09 04:51:18,440 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~b!base [2024-11-09 04:51:18,443 WARN L162 FloydHoareUtils]: Requires clause for func_to_recursive_line_21_to_21_0 contained old-variable. Original clause: (and (<= 0 (+ (select (select |old(#memory_int)| |func_to_recursive_line_21_to_21_0_#in~b.base|) |func_to_recursive_line_21_to_21_0_#in~b.offset|) 2147483648)) (= |#memory_int| |old(#memory_int)|)) Eliminated clause: (<= 0 (+ (select (select |#memory_int| |func_to_recursive_line_21_to_21_0_#in~b.base|) |func_to_recursive_line_21_to_21_0_#in~b.offset|) 2147483648)) [2024-11-09 04:51:18,444 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (@diff (Array Int (Array Int Int)) (Array Int (Array Int Int)) Int) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.getBinaryOperator(Term2Expression.java:587) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:280) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translateStore(Term2Expression.java:355) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:173) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:173) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:137) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:402) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.lib.translation.DefaultTranslator.translateExpressionWithContext(DefaultTranslator.java:166) at de.uni_freiburg.informatik.ultimate.core.lib.translation.DefaultTranslator.translateProcedureContract(DefaultTranslator.java:379) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProcedureContract(ModelTranslationContainer.java:356) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProcedureContract(ModelTranslationContainer.java:345) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.BacktranslationService.translateProcedureContract(BacktranslationService.java:94) at de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.FloydHoareUtils.createProcedureContractResults(FloydHoareUtils.java:186) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:199) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2024-11-09 04:51:18,446 INFO L158 Benchmark]: Toolchain (without parser) took 86965.59ms. Allocated memory was 134.2MB in the beginning and 559.9MB in the end (delta: 425.7MB). Free memory was 96.9MB in the beginning and 481.8MB in the end (delta: -384.9MB). Peak memory consumption was 333.5MB. Max. memory is 16.1GB. [2024-11-09 04:51:18,446 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 134.2MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 04:51:18,447 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.69ms. Allocated memory is still 134.2MB. Free memory was 96.9MB in the beginning and 85.0MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-11-09 04:51:18,447 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.20ms. Allocated memory is still 134.2MB. Free memory was 85.0MB in the beginning and 83.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 04:51:18,447 INFO L158 Benchmark]: Boogie Preprocessor took 22.81ms. Allocated memory is still 134.2MB. Free memory was 83.3MB in the beginning and 82.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 04:51:18,447 INFO L158 Benchmark]: RCFGBuilder took 439.97ms. Allocated memory is still 134.2MB. Free memory was 82.2MB in the beginning and 68.3MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 04:51:18,448 INFO L158 Benchmark]: TraceAbstraction took 86191.90ms. Allocated memory was 182.5MB in the beginning and 559.9MB in the end (delta: 377.5MB). Free memory was 153.2MB in the beginning and 481.8MB in the end (delta: -328.6MB). Peak memory consumption was 339.2MB. Max. memory is 16.1GB. [2024-11-09 04:51:18,449 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 134.2MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 245.69ms. Allocated memory is still 134.2MB. Free memory was 96.9MB in the beginning and 85.0MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.20ms. Allocated memory is still 134.2MB. Free memory was 85.0MB in the beginning and 83.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.81ms. Allocated memory is still 134.2MB. Free memory was 83.3MB in the beginning and 82.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 439.97ms. Allocated memory is still 134.2MB. Free memory was 82.2MB in the beginning and 68.3MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 86191.90ms. Allocated memory was 182.5MB in the beginning and 559.9MB in the end (delta: 377.5MB). Free memory was 153.2MB in the beginning and 481.8MB in the end (delta: -328.6MB). Peak memory consumption was 339.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #in~b!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int,GLOBAL],[IdentifierExpression[#in~a!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #in~a!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #in~b!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #in~b!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #in~a!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #in~b!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int,GLOBAL],[IdentifierExpression[#in~a!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #in~b!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int,GLOBAL]],[IdentifierExpression[#in~a!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #in~a!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #in~b!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #in~b!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array UnaryExpression[OLD,IdentifierExpression[#memory_int,GLOBAL]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[UnaryExpression[OLD,IdentifierExpression[#memory_int,GLOBAL]],[IdentifierExpression[#in~a!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #in~a!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #in~b!base * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 30]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 30]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 85.2s, OverallIterations: 9, TraceHistogramMax: 14, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 10.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 135 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 135 mSDsluCounter, 658 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 376 IncrementalHoareTripleChecker+Unchecked, 549 mSDsCounter, 95 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1343 IncrementalHoareTripleChecker+Invalid, 1814 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 95 mSolverCounterUnsat, 109 mSDtfsCounter, 1343 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 754 GetRequests, 477 SyntacticMatches, 30 SemanticMatches, 247 ConstructedPredicates, 17 IntricatePredicates, 0 DeprecatedPredicates, 3072 ImplicationChecksByTransitivity, 55.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=7, InterpolantAutomatonStates: 114, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 71.7s InterpolantComputationTime, 754 NumberOfCodeBlocks, 754 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 832 ConstructedInterpolants, 11 QuantifiedInterpolants, 8822 SizeOfPredicates, 79 NumberOfNonLiveVariables, 1558 ConjunctsInSsa, 439 ConjunctsInUnsatCore, 18 InterpolantComputations, 3 PerfectInterpolantSequences, 2357/2912 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (@diff (Array Int (Array Int Int)) (Array Int (Array Int Int)) Int) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (@diff (Array Int (Array Int Int)) (Array Int (Array Int Int)) Int): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.getBinaryOperator(Term2Expression.java:587) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2024-11-09 04:51:18,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1a590e2514668f126114e4312bb6236a04cce9502b393533b5b4bfd230be904b --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 04:51:20,812 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 04:51:20,909 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Overflow-32bit-Taipan_Bitvector.epf [2024-11-09 04:51:20,928 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 04:51:20,929 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 04:51:20,964 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 04:51:20,965 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 04:51:20,966 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 04:51:20,967 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 04:51:20,968 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 04:51:20,968 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 04:51:20,969 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 04:51:20,969 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 04:51:20,970 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 04:51:20,972 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 04:51:20,972 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 04:51:20,973 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 04:51:20,974 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 04:51:20,978 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 04:51:20,978 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 04:51:20,979 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 04:51:20,979 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 04:51:20,980 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 04:51:20,980 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 04:51:20,980 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 04:51:20,981 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-09 04:51:20,981 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 04:51:20,981 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 04:51:20,981 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-09 04:51:20,982 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 04:51:20,982 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 04:51:20,982 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 04:51:20,983 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 04:51:20,984 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 04:51:20,985 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 04:51:20,986 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 04:51:20,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 04:51:20,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:51:20,987 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 04:51:20,988 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 04:51:20,988 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 04:51:20,989 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-09 04:51:20,989 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-09 04:51:20,990 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 04:51:20,990 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 04:51:20,990 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a590e2514668f126114e4312bb6236a04cce9502b393533b5b4bfd230be904b [2024-11-09 04:51:21,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 04:51:21,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 04:51:21,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 04:51:21,379 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 04:51:21,380 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 04:51:21,381 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c Unable to find full path for "g++" [2024-11-09 04:51:23,656 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 04:51:23,904 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 04:51:23,905 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c [2024-11-09 04:51:23,913 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/data/df5617d8e/4ca8d11ba74a416991d7480d4dd8acc1/FLAGd56397633 [2024-11-09 04:51:23,930 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/data/df5617d8e/4ca8d11ba74a416991d7480d4dd8acc1 [2024-11-09 04:51:23,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 04:51:23,934 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 04:51:23,936 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 04:51:23,936 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 04:51:23,944 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 04:51:23,944 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:51:23" (1/1) ... [2024-11-09 04:51:23,946 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@451ba85d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:51:23, skipping insertion in model container [2024-11-09 04:51:23,946 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:51:23" (1/1) ... [2024-11-09 04:51:23,974 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 04:51:24,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:51:24,250 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 04:51:24,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:51:24,316 INFO L204 MainTranslator]: Completed translation [2024-11-09 04:51:24,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:51:24 WrapperNode [2024-11-09 04:51:24,317 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 04:51:24,319 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 04:51:24,319 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 04:51:24,319 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 04:51:24,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:51:24" (1/1) ... [2024-11-09 04:51:24,340 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:51:24" (1/1) ... [2024-11-09 04:51:24,359 INFO L138 Inliner]: procedures = 16, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2024-11-09 04:51:24,360 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 04:51:24,361 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 04:51:24,361 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 04:51:24,362 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 04:51:24,371 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:51:24" (1/1) ... [2024-11-09 04:51:24,371 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:51:24" (1/1) ... [2024-11-09 04:51:24,374 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:51:24" (1/1) ... [2024-11-09 04:51:24,377 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:51:24" (1/1) ... [2024-11-09 04:51:24,387 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:51:24" (1/1) ... [2024-11-09 04:51:24,392 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:51:24" (1/1) ... [2024-11-09 04:51:24,397 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:51:24" (1/1) ... [2024-11-09 04:51:24,398 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:51:24" (1/1) ... [2024-11-09 04:51:24,400 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 04:51:24,404 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 04:51:24,405 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 04:51:24,405 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 04:51:24,406 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:51:24" (1/1) ... [2024-11-09 04:51:24,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:51:24,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:51:24,439 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 04:51:24,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 04:51:24,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 04:51:24,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-09 04:51:24,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2024-11-09 04:51:24,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 04:51:24,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-09 04:51:24,478 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_20_to_21_0 [2024-11-09 04:51:24,478 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_20_to_21_0 [2024-11-09 04:51:24,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 04:51:24,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 04:51:24,480 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_21_to_21_0 [2024-11-09 04:51:24,481 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_21_to_21_0 [2024-11-09 04:51:24,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 04:51:24,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-11-09 04:51:24,599 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 04:51:24,602 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 04:51:24,831 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-09 04:51:24,832 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 04:51:24,850 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 04:51:24,852 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 04:51:24,853 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:51:24 BoogieIcfgContainer [2024-11-09 04:51:24,853 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 04:51:24,857 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 04:51:24,857 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 04:51:24,861 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 04:51:24,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:51:23" (1/3) ... [2024-11-09 04:51:24,863 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@712de0f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:51:24, skipping insertion in model container [2024-11-09 04:51:24,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:51:24" (2/3) ... [2024-11-09 04:51:24,865 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@712de0f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:51:24, skipping insertion in model container [2024-11-09 04:51:24,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:51:24" (3/3) ... [2024-11-09 04:51:24,866 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_nested_2.c [2024-11-09 04:51:24,889 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 04:51:24,890 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-09 04:51:24,968 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 04:51:24,978 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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;@5d4f262c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 04:51:24,979 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 04:51:24,985 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 20 states have (on average 1.4) internal successors, (28), 26 states have internal predecessors, (28), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-09 04:51:24,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 04:51:24,996 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:51:24,997 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:51:24,999 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_21_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-09 04:51:25,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:51:25,007 INFO L85 PathProgramCache]: Analyzing trace with hash -403132117, now seen corresponding path program 1 times [2024-11-09 04:51:25,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:51:25,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478873387] [2024-11-09 04:51:25,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:51:25,019 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:51:25,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:51:25,023 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:51:25,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-09 04:51:25,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:51:25,144 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-09 04:51:25,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:51:25,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:51:25,180 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:51:25,181 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:51:25,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478873387] [2024-11-09 04:51:25,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1478873387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:51:25,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:51:25,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 04:51:25,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82802952] [2024-11-09 04:51:25,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:51:25,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 04:51:25,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:51:25,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 04:51:25,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 04:51:25,213 INFO L87 Difference]: Start difference. First operand has 31 states, 20 states have (on average 1.4) internal successors, (28), 26 states have internal predecessors, (28), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 1 states have (on average 7.0) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:51:25,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:51:25,242 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2024-11-09 04:51:25,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 04:51:25,245 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 7.0) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-09 04:51:25,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:51:25,253 INFO L225 Difference]: With dead ends: 35 [2024-11-09 04:51:25,253 INFO L226 Difference]: Without dead ends: 19 [2024-11-09 04:51:25,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 04:51:25,264 INFO L432 NwaCegarLoop]: 32 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, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:51:25,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:51:25,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-09 04:51:25,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-09 04:51:25,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 15 states have internal predecessors, (15), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 04:51:25,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2024-11-09 04:51:25,306 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2024-11-09 04:51:25,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:51:25,307 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2024-11-09 04:51:25,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 7.0) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:51:25,308 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2024-11-09 04:51:25,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 04:51:25,310 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:51:25,310 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:51:25,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-09 04:51:25,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:51:25,512 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_21_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-09 04:51:25,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:51:25,513 INFO L85 PathProgramCache]: Analyzing trace with hash 387806336, now seen corresponding path program 1 times [2024-11-09 04:51:25,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:51:25,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1120054796] [2024-11-09 04:51:25,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:51:25,514 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:51:25,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:51:25,517 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:51:25,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-09 04:51:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:51:25,587 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 04:51:25,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:51:25,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 04:51:25,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:51:25,720 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:51:25,721 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:51:25,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1120054796] [2024-11-09 04:51:25,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1120054796] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:51:25,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:51:25,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 04:51:25,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184542177] [2024-11-09 04:51:25,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:51:25,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 04:51:25,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:51:25,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 04:51:25,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:51:25,724 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:51:25,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:51:25,890 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2024-11-09 04:51:25,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:51:25,891 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-09 04:51:25,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:51:25,892 INFO L225 Difference]: With dead ends: 30 [2024-11-09 04:51:25,892 INFO L226 Difference]: Without dead ends: 29 [2024-11-09 04:51:25,893 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-09 04:51:25,894 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:51:25,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 55 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:51:25,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-09 04:51:25,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2024-11-09 04:51:25,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 20 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 04:51:25,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-11-09 04:51:25,906 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 10 [2024-11-09 04:51:25,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:51:25,907 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-11-09 04:51:25,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:51:25,908 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-11-09 04:51:25,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 04:51:25,909 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:51:25,909 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:51:25,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-09 04:51:26,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:51:26,110 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-09 04:51:26,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:51:26,111 INFO L85 PathProgramCache]: Analyzing trace with hash -116358402, now seen corresponding path program 1 times [2024-11-09 04:51:26,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:51:26,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482877661] [2024-11-09 04:51:26,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:51:26,113 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:51:26,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:51:26,115 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:51:26,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-09 04:51:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:51:26,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 04:51:26,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:51:26,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 04:51:26,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:51:26,374 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:51:26,378 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:51:26,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482877661] [2024-11-09 04:51:26,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482877661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:51:26,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:51:26,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 04:51:26,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134077667] [2024-11-09 04:51:26,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:51:26,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 04:51:26,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:51:26,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 04:51:26,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:51:26,385 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 04:51:26,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:51:26,523 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2024-11-09 04:51:26,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:51:26,524 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-11-09 04:51:26,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:51:26,526 INFO L225 Difference]: With dead ends: 49 [2024-11-09 04:51:26,526 INFO L226 Difference]: Without dead ends: 25 [2024-11-09 04:51:26,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:51:26,531 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:51:26,532 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 31 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:51:26,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-09 04:51:26,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-09 04:51:26,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 04:51:26,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2024-11-09 04:51:26,539 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 13 [2024-11-09 04:51:26,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:51:26,539 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2024-11-09 04:51:26,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 04:51:26,540 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2024-11-09 04:51:26,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 04:51:26,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:51:26,541 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:51:26,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-11-09 04:51:26,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:51:26,744 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_21_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-09 04:51:26,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:51:26,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1535027908, now seen corresponding path program 1 times [2024-11-09 04:51:26,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:51:26,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1400490129] [2024-11-09 04:51:26,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:51:26,745 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:51:26,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:51:26,750 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:51:26,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-09 04:51:26,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:51:26,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 04:51:26,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:51:26,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 04:51:26,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 04:51:27,081 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:51:27,082 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:51:27,413 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:51:27,414 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:51:27,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1400490129] [2024-11-09 04:51:27,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1400490129] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:51:27,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [422071983] [2024-11-09 04:51:27,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:51:27,415 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:51:27,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:51:27,419 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:51:27,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-09 04:51:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:51:27,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 04:51:27,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:51:27,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 04:51:27,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 04:51:28,157 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:51:28,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:51:28,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:51:28,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [422071983] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:51:28,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77235185] [2024-11-09 04:51:28,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:51:28,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:51:28,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:51:28,238 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:51:28,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 04:51:28,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:51:28,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 04:51:28,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:51:28,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 04:51:28,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-09 04:51:28,406 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:51:28,406 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:51:28,464 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:51:28,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77235185] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:51:28,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 04:51:28,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11, 8, 8, 8] total 24 [2024-11-09 04:51:28,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208377764] [2024-11-09 04:51:28,465 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 04:51:28,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 04:51:28,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:51:28,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 04:51:28,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2024-11-09 04:51:28,472 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 25 states, 20 states have (on average 1.5) internal successors, (30), 18 states have internal predecessors, (30), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:51:29,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:51:29,649 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2024-11-09 04:51:29,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 04:51:29,650 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 20 states have (on average 1.5) internal successors, (30), 18 states have internal predecessors, (30), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-09 04:51:29,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:51:29,653 INFO L225 Difference]: With dead ends: 53 [2024-11-09 04:51:29,653 INFO L226 Difference]: Without dead ends: 52 [2024-11-09 04:51:29,654 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=230, Invalid=1176, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 04:51:29,655 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 71 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 04:51:29,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 113 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 04:51:29,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-09 04:51:29,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-09 04:51:29,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 40 states have internal predecessors, (41), 7 states have call successors, (7), 6 states have call predecessors, (7), 8 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-09 04:51:29,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2024-11-09 04:51:29,685 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 15 [2024-11-09 04:51:29,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:51:29,686 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2024-11-09 04:51:29,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 20 states have (on average 1.5) internal successors, (30), 18 states have internal predecessors, (30), 8 states have call successors, (8), 8 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:51:29,686 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2024-11-09 04:51:29,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 04:51:29,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:51:29,687 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:51:29,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2024-11-09 04:51:29,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 04:51:30,094 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-09 04:51:30,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:51:30,294 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-09 04:51:30,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:51:30,295 INFO L85 PathProgramCache]: Analyzing trace with hash -627142662, now seen corresponding path program 1 times [2024-11-09 04:51:30,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:51:30,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [781882438] [2024-11-09 04:51:30,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:51:30,296 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:51:30,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:51:30,300 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:51:30,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-11-09 04:51:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:51:30,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 04:51:30,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:51:30,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 04:51:30,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:51:30,695 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:51:31,411 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:51:31,412 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:51:31,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [781882438] [2024-11-09 04:51:31,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [781882438] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:51:31,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1376226833] [2024-11-09 04:51:31,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:51:31,413 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:51:31,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:51:31,416 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:51:31,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-09 04:51:31,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:51:31,539 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 04:51:31,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:51:31,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 04:51:31,807 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:51:31,807 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:51:32,187 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:51:32,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1376226833] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:51:32,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233276017] [2024-11-09 04:51:32,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:51:32,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:51:32,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:51:32,192 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:51:32,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 04:51:32,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:51:32,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 04:51:32,267 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:51:32,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 04:51:32,395 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 04:51:32,396 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:51:32,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:51:32,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233276017] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:51:32,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 04:51:32,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 13, 11, 10, 11] total 23 [2024-11-09 04:51:32,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875115500] [2024-11-09 04:51:32,796 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 04:51:32,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 04:51:32,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:51:32,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 04:51:32,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2024-11-09 04:51:32,798 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand has 23 states, 17 states have (on average 1.588235294117647) internal successors, (27), 19 states have internal predecessors, (27), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 04:51:33,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:51:33,434 INFO L93 Difference]: Finished difference Result 102 states and 120 transitions. [2024-11-09 04:51:33,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 04:51:33,435 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 17 states have (on average 1.588235294117647) internal successors, (27), 19 states have internal predecessors, (27), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) Word has length 20 [2024-11-09 04:51:33,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:51:33,438 INFO L225 Difference]: With dead ends: 102 [2024-11-09 04:51:33,438 INFO L226 Difference]: Without dead ends: 49 [2024-11-09 04:51:33,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=147, Invalid=783, Unknown=0, NotChecked=0, Total=930 [2024-11-09 04:51:33,440 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 18 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:51:33,440 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 76 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 04:51:33,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-09 04:51:33,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2024-11-09 04:51:33,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 32 states have (on average 1.125) internal successors, (36), 35 states have internal predecessors, (36), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-09 04:51:33,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2024-11-09 04:51:33,454 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 20 [2024-11-09 04:51:33,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:51:33,454 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2024-11-09 04:51:33,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 17 states have (on average 1.588235294117647) internal successors, (27), 19 states have internal predecessors, (27), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 04:51:33,455 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2024-11-09 04:51:33,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 04:51:33,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:51:33,456 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:51:33,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2024-11-09 04:51:33,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-11-09 04:51:33,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 04:51:34,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:51:34,060 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-09 04:51:34,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:51:34,060 INFO L85 PathProgramCache]: Analyzing trace with hash 416464878, now seen corresponding path program 2 times [2024-11-09 04:51:34,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:51:34,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [867724935] [2024-11-09 04:51:34,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 04:51:34,061 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:51:34,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:51:34,062 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:51:34,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-11-09 04:51:34,144 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 04:51:34,145 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:51:34,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 04:51:34,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:51:34,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 04:51:34,591 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 04:51:34,591 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:51:36,147 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:51:36,147 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:51:36,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [867724935] [2024-11-09 04:51:36,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [867724935] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:51:36,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [940645114] [2024-11-09 04:51:36,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 04:51:36,149 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:51:36,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:51:36,152 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:51:36,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2024-11-09 04:51:36,344 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 04:51:36,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326067514] [2024-11-09 04:51:36,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 04:51:36,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:51:36,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:51:36,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 1 [2024-11-09 04:51:36,353 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:51:36,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 04:51:36,466 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 04:51:36,466 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:51:36,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 04:51:36,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:51:36,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 04:51:36,673 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 04:51:36,673 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:51:37,517 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:51:37,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326067514] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:51:37,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2024-11-09 04:51:37,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 16, 11, 16] total 25 [2024-11-09 04:51:37,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732320200] [2024-11-09 04:51:37,519 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2024-11-09 04:51:37,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 04:51:37,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:51:37,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 04:51:37,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2024-11-09 04:51:37,523 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 25 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 04:51:38,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:51:38,221 INFO L93 Difference]: Finished difference Result 93 states and 113 transitions. [2024-11-09 04:51:38,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 04:51:38,222 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 27 [2024-11-09 04:51:38,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:51:38,224 INFO L225 Difference]: With dead ends: 93 [2024-11-09 04:51:38,224 INFO L226 Difference]: Without dead ends: 45 [2024-11-09 04:51:38,225 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2024-11-09 04:51:38,226 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 04:51:38,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 88 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 04:51:38,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-09 04:51:38,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-09 04:51:38,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 31 states have (on average 1.096774193548387) internal successors, (34), 33 states have internal predecessors, (34), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-09 04:51:38,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2024-11-09 04:51:38,238 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 27 [2024-11-09 04:51:38,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:51:38,238 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2024-11-09 04:51:38,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-09 04:51:38,239 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2024-11-09 04:51:38,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-09 04:51:38,240 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:51:38,240 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:51:38,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 04:51:38,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-11-09 04:51:38,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:51:38,641 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-09 04:51:38,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:51:38,642 INFO L85 PathProgramCache]: Analyzing trace with hash 739748330, now seen corresponding path program 3 times [2024-11-09 04:51:38,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:51:38,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [610396241] [2024-11-09 04:51:38,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:51:38,642 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:51:38,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:51:38,646 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:51:38,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-11-09 04:51:38,759 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 04:51:38,759 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:51:38,766 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-09 04:51:38,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:51:38,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 04:51:39,313 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 04:51:39,313 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:51:41,468 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:51:41,469 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:51:41,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [610396241] [2024-11-09 04:51:41,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [610396241] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:51:41,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1361568203] [2024-11-09 04:51:41,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:51:41,469 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:51:41,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:51:41,474 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:51:41,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2024-11-09 04:51:41,644 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 04:51:41,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630584563] [2024-11-09 04:51:41,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:51:41,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:51:41,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:51:41,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 1 [2024-11-09 04:51:41,650 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:51:41,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 04:51:41,770 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 04:51:41,770 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:51:41,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-09 04:51:41,775 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:51:41,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 04:51:42,039 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 04:51:42,040 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:51:43,262 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:51:43,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630584563] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:51:43,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2024-11-09 04:51:43,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 21, 12, 21] total 31 [2024-11-09 04:51:43,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027611551] [2024-11-09 04:51:43,262 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2024-11-09 04:51:43,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-09 04:51:43,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:51:43,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-09 04:51:43,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=798, Unknown=0, NotChecked=0, Total=930 [2024-11-09 04:51:43,265 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand has 31 states, 25 states have (on average 1.44) internal successors, (36), 26 states have internal predecessors, (36), 7 states have call successors, (7), 6 states have call predecessors, (7), 8 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-09 04:51:44,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:51:44,123 INFO L93 Difference]: Finished difference Result 89 states and 113 transitions. [2024-11-09 04:51:44,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 04:51:44,124 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 25 states have (on average 1.44) internal successors, (36), 26 states have internal predecessors, (36), 7 states have call successors, (7), 6 states have call predecessors, (7), 8 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) Word has length 34 [2024-11-09 04:51:44,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:51:44,126 INFO L225 Difference]: With dead ends: 89 [2024-11-09 04:51:44,126 INFO L226 Difference]: Without dead ends: 43 [2024-11-09 04:51:44,127 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=211, Invalid=1121, Unknown=0, NotChecked=0, Total=1332 [2024-11-09 04:51:44,127 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 04:51:44,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 125 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 04:51:44,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-09 04:51:44,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-11-09 04:51:44,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-09 04:51:44,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2024-11-09 04:51:44,138 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 34 [2024-11-09 04:51:44,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:51:44,138 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2024-11-09 04:51:44,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 25 states have (on average 1.44) internal successors, (36), 26 states have internal predecessors, (36), 7 states have call successors, (7), 6 states have call predecessors, (7), 8 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2024-11-09 04:51:44,138 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2024-11-09 04:51:44,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 04:51:44,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:51:44,140 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:51:44,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2024-11-09 04:51:44,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-09 04:51:44,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:51:44,543 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-09 04:51:44,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:51:44,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1601479902, now seen corresponding path program 4 times [2024-11-09 04:51:44,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:51:44,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1075950352] [2024-11-09 04:51:44,544 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 04:51:44,544 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:51:44,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:51:44,548 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:51:44,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-11-09 04:51:44,645 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 04:51:44,645 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:51:44,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-09 04:51:44,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:51:44,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 04:51:45,171 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-09 04:51:45,171 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:51:48,472 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:51:48,472 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:51:48,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1075950352] [2024-11-09 04:51:48,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1075950352] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:51:48,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2104773082] [2024-11-09 04:51:48,473 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 04:51:48,473 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:51:48,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:51:48,474 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:51:48,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2024-11-09 04:51:48,664 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 04:51:48,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106016239] [2024-11-09 04:51:48,664 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 04:51:48,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:51:48,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:51:48,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 1 [2024-11-09 04:51:48,668 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:51:48,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 04:51:48,771 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 04:51:48,771 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:51:48,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-09 04:51:48,780 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:51:48,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 04:51:49,071 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-09 04:51:49,071 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:51:50,836 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:51:50,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106016239] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:51:50,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2024-11-09 04:51:50,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 26, 13, 26] total 37 [2024-11-09 04:51:50,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531608185] [2024-11-09 04:51:50,837 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2024-11-09 04:51:50,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-09 04:51:50,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:51:50,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-09 04:51:50,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1167, Unknown=0, NotChecked=0, Total=1332 [2024-11-09 04:51:50,840 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand has 37 states, 30 states have (on average 1.4) internal successors, (42), 31 states have internal predecessors, (42), 8 states have call successors, (8), 7 states have call predecessors, (8), 10 states have return successors, (10), 9 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-09 04:51:52,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:51:52,035 INFO L93 Difference]: Finished difference Result 85 states and 111 transitions. [2024-11-09 04:51:52,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 04:51:52,036 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 30 states have (on average 1.4) internal successors, (42), 31 states have internal predecessors, (42), 8 states have call successors, (8), 7 states have call predecessors, (8), 10 states have return successors, (10), 9 states have call predecessors, (10), 7 states have call successors, (10) Word has length 41 [2024-11-09 04:51:52,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:51:52,037 INFO L225 Difference]: With dead ends: 85 [2024-11-09 04:51:52,037 INFO L226 Difference]: Without dead ends: 45 [2024-11-09 04:51:52,039 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=270, Invalid=1622, Unknown=0, NotChecked=0, Total=1892 [2024-11-09 04:51:52,040 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 29 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 04:51:52,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 144 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 04:51:52,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-09 04:51:52,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-09 04:51:52,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 31 states have (on average 1.064516129032258) internal successors, (33), 32 states have internal predecessors, (33), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2024-11-09 04:51:52,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2024-11-09 04:51:52,052 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 41 [2024-11-09 04:51:52,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:51:52,052 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2024-11-09 04:51:52,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 30 states have (on average 1.4) internal successors, (42), 31 states have internal predecessors, (42), 8 states have call successors, (8), 7 states have call predecessors, (8), 10 states have return successors, (10), 9 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-09 04:51:52,052 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2024-11-09 04:51:52,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-09 04:51:52,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:51:52,054 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:51:52,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-09 04:51:52,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2024-11-09 04:51:52,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:51:52,454 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-09 04:51:52,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:51:52,455 INFO L85 PathProgramCache]: Analyzing trace with hash -74011686, now seen corresponding path program 5 times [2024-11-09 04:51:52,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:51:52,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1175690036] [2024-11-09 04:51:52,455 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 04:51:52,455 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:51:52,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:51:52,456 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:51:52,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2024-11-09 04:51:52,567 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-09 04:51:52,567 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:51:52,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-09 04:51:52,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:51:52,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 04:51:53,215 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-09 04:51:53,215 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:51:57,603 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:51:57,603 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:51:57,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1175690036] [2024-11-09 04:51:57,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1175690036] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:51:57,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [858053718] [2024-11-09 04:51:57,604 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 04:51:57,604 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:51:57,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:51:57,607 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:51:57,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2024-11-09 04:51:57,813 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-09 04:51:57,813 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:51:57,816 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-09 04:51:57,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:51:58,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 04:51:58,462 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-09 04:51:58,462 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:52:00,971 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:00,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [858053718] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:52:00,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431975043] [2024-11-09 04:52:00,972 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 04:52:00,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:52:00,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:52:00,973 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:52:00,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 04:52:01,102 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-09 04:52:01,103 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:52:01,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-09 04:52:01,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:01,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 04:52:02,354 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 16 proven. 35 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-09 04:52:02,354 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:52:09,522 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:09,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431975043] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:52:09,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 04:52:09,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 31, 17, 31, 17, 31] total 81 [2024-11-09 04:52:09,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895786960] [2024-11-09 04:52:09,523 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 04:52:09,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-11-09 04:52:09,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:09,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-11-09 04:52:09,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=645, Invalid=5835, Unknown=0, NotChecked=0, Total=6480 [2024-11-09 04:52:09,527 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand has 81 states, 64 states have (on average 1.34375) internal successors, (86), 68 states have internal predecessors, (86), 18 states have call successors, (18), 14 states have call predecessors, (18), 22 states have return successors, (25), 21 states have call predecessors, (25), 16 states have call successors, (25) [2024-11-09 04:52:14,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:14,214 INFO L93 Difference]: Finished difference Result 97 states and 131 transitions. [2024-11-09 04:52:14,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 04:52:14,215 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 64 states have (on average 1.34375) internal successors, (86), 68 states have internal predecessors, (86), 18 states have call successors, (18), 14 states have call predecessors, (18), 22 states have return successors, (25), 21 states have call predecessors, (25), 16 states have call successors, (25) Word has length 48 [2024-11-09 04:52:14,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:14,216 INFO L225 Difference]: With dead ends: 97 [2024-11-09 04:52:14,216 INFO L226 Difference]: Without dead ends: 55 [2024-11-09 04:52:14,219 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2936 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=950, Invalid=7792, Unknown=0, NotChecked=0, Total=8742 [2024-11-09 04:52:14,220 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 88 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:14,220 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 302 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-09 04:52:14,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-09 04:52:14,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 47. [2024-11-09 04:52:14,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 32 states have (on average 1.0625) internal successors, (34), 33 states have internal predecessors, (34), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (17), 7 states have call predecessors, (17), 5 states have call successors, (17) [2024-11-09 04:52:14,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions. [2024-11-09 04:52:14,233 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 48 [2024-11-09 04:52:14,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:14,236 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions. [2024-11-09 04:52:14,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 64 states have (on average 1.34375) internal successors, (86), 68 states have internal predecessors, (86), 18 states have call successors, (18), 14 states have call predecessors, (18), 22 states have return successors, (25), 21 states have call predecessors, (25), 16 states have call successors, (25) [2024-11-09 04:52:14,237 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions. [2024-11-09 04:52:14,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-09 04:52:14,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:14,238 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:52:14,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-09 04:52:14,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2024-11-09 04:52:14,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2024-11-09 04:52:14,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 04:52:14,839 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-09 04:52:14,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:14,840 INFO L85 PathProgramCache]: Analyzing trace with hash 386544078, now seen corresponding path program 6 times [2024-11-09 04:52:14,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:14,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489735826] [2024-11-09 04:52:14,840 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 04:52:14,840 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:52:14,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:14,845 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:52:14,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2024-11-09 04:52:14,988 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-09 04:52:14,988 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:52:14,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-09 04:52:14,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:14,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 04:52:15,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-09 04:52:15,076 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 [2024-11-09 04:52:15,389 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 [2024-11-09 04:52:15,430 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-09 04:52:15,431 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:52:15,820 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:52:15,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489735826] [2024-11-09 04:52:15,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489735826] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:52:15,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1515401797] [2024-11-09 04:52:15,823 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 04:52:15,824 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:52:15,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:52:15,827 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:52:15,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2024-11-09 04:52:16,045 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 04:52:16,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097281590] [2024-11-09 04:52:16,045 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 04:52:16,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:52:16,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:52:16,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 1 [2024-11-09 04:52:16,049 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:52:16,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-09 04:52:16,260 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-09 04:52:16,260 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:52:16,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-09 04:52:16,267 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:16,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-09 04:52:16,279 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 04:52:16,309 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 [2024-11-09 04:52:16,551 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 [2024-11-09 04:52:16,563 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-09 04:52:16,563 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:52:16,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097281590] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:52:16,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 04:52:16,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2024-11-09 04:52:16,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135362207] [2024-11-09 04:52:16,892 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 04:52:16,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 04:52:16,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:16,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 04:52:16,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=141, Unknown=6, NotChecked=0, Total=182 [2024-11-09 04:52:16,894 INFO L87 Difference]: Start difference. First operand 47 states and 58 transitions. Second operand has 11 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:52:17,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:17,153 INFO L93 Difference]: Finished difference Result 54 states and 66 transitions. [2024-11-09 04:52:17,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 04:52:17,153 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 55 [2024-11-09 04:52:17,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:17,155 INFO L225 Difference]: With dead ends: 54 [2024-11-09 04:52:17,155 INFO L226 Difference]: Without dead ends: 53 [2024-11-09 04:52:17,156 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=234, Unknown=6, NotChecked=0, Total=306 [2024-11-09 04:52:17,156 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 12 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:17,157 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 43 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:52:17,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-09 04:52:17,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-09 04:52:17,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 37 states have (on average 1.054054054054054) internal successors, (39), 37 states have internal predecessors, (39), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (18), 8 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-09 04:52:17,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 65 transitions. [2024-11-09 04:52:17,175 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 65 transitions. Word has length 55 [2024-11-09 04:52:17,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:17,176 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 65 transitions. [2024-11-09 04:52:17,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-09 04:52:17,176 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 65 transitions. [2024-11-09 04:52:17,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-09 04:52:17,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:17,178 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-09 04:52:17,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-09 04:52:17,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2024-11-09 04:52:17,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:52:17,579 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-09 04:52:17,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:17,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1850205728, now seen corresponding path program 1 times [2024-11-09 04:52:17,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:17,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436791541] [2024-11-09 04:52:17,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:17,581 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:52:17,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:17,582 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:52:17,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2024-11-09 04:52:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:17,805 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-11-09 04:52:17,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:17,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 04:52:17,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-09 04:52:17,881 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 [2024-11-09 04:52:18,164 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 [2024-11-09 04:52:18,220 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 19 treesize of output 11 [2024-11-09 04:52:18,306 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 [2024-11-09 04:52:18,529 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 [2024-11-09 04:52:18,585 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 23 proven. 75 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2024-11-09 04:52:18,585 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:52:18,891 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_607 (Array (_ BitVec 32) (_ BitVec 32)))) (bvsle (bvadd ((_ sign_extend 1) (select (select (store |c_#memory_int| c_func_to_recursive_line_20_to_21_0_~b.base v_ArrVal_607) c_func_to_recursive_line_20_to_21_0_~a.base) c_func_to_recursive_line_20_to_21_0_~a.offset)) (_ bv1 33)) (_ bv2147483647 33))) is different from false [2024-11-09 04:52:18,892 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:52:18,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436791541] [2024-11-09 04:52:18,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1436791541] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:52:18,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1319717375] [2024-11-09 04:52:18,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:18,893 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:52:18,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:52:18,894 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:52:18,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2024-11-09 04:52:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:19,413 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 93 conjuncts are in the unsatisfiable core [2024-11-09 04:52:19,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:19,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 04:52:19,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-09 04:52:19,570 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 [2024-11-09 04:52:19,792 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 [2024-11-09 04:52:19,877 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 19 treesize of output 11 [2024-11-09 04:52:19,994 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 [2024-11-09 04:52:20,208 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 [2024-11-09 04:52:20,266 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 23 proven. 75 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2024-11-09 04:52:20,266 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:52:20,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1319717375] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:52:20,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385261777] [2024-11-09 04:52:20,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:20,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:52:20,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:52:20,661 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:52:20,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-09 04:52:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:20,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-11-09 04:52:20,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:20,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-09 04:52:20,868 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 04:52:20,894 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 [2024-11-09 04:52:21,105 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 [2024-11-09 04:52:21,134 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 19 treesize of output 11 [2024-11-09 04:52:21,168 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 [2024-11-09 04:52:21,361 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 [2024-11-09 04:52:21,371 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 23 proven. 75 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2024-11-09 04:52:21,371 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:52:21,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385261777] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:52:21,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:52:21,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-09 04:52:21,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016626387] [2024-11-09 04:52:21,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:52:21,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 04:52:21,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:21,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 04:52:21,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=466, Unknown=8, NotChecked=44, Total=600 [2024-11-09 04:52:21,687 INFO L87 Difference]: Start difference. First operand 53 states and 65 transitions. Second operand has 21 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 15 states have internal predecessors, (30), 8 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 04:52:22,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:22,198 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2024-11-09 04:52:22,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 04:52:22,198 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 15 states have internal predecessors, (30), 8 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) Word has length 108 [2024-11-09 04:52:22,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:22,200 INFO L225 Difference]: With dead ends: 61 [2024-11-09 04:52:22,200 INFO L226 Difference]: Without dead ends: 60 [2024-11-09 04:52:22,200 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 309 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=137, Invalid=729, Unknown=8, NotChecked=56, Total=930 [2024-11-09 04:52:22,201 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 20 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:22,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 57 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 04:52:22,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-09 04:52:22,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2024-11-09 04:52:22,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 42 states have internal predecessors, (44), 10 states have call successors, (10), 8 states have call predecessors, (10), 7 states have return successors, (19), 9 states have call predecessors, (19), 7 states have call successors, (19) [2024-11-09 04:52:22,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 73 transitions. [2024-11-09 04:52:22,222 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 73 transitions. Word has length 108 [2024-11-09 04:52:22,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:22,222 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 73 transitions. [2024-11-09 04:52:22,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 15 states have internal predecessors, (30), 8 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 04:52:22,222 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 73 transitions. [2024-11-09 04:52:22,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-09 04:52:22,225 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:22,225 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 18, 18, 18, 18, 18, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2024-11-09 04:52:22,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-09 04:52:22,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2024-11-09 04:52:22,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2024-11-09 04:52:22,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 04:52:22,829 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-09 04:52:22,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:22,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1426145550, now seen corresponding path program 2 times [2024-11-09 04:52:22,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:22,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1820427533] [2024-11-09 04:52:22,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 04:52:22,834 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:52:22,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:22,837 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:52:22,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2024-11-09 04:52:23,193 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 04:52:23,193 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:52:23,203 INFO L255 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 149 conjuncts are in the unsatisfiable core [2024-11-09 04:52:23,211 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:23,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 04:52:23,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-09 04:52:23,264 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 19 treesize of output 18 [2024-11-09 04:52:23,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 23 treesize of output 16 [2024-11-09 04:52:23,794 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 19 treesize of output 11 [2024-11-09 04:52:23,869 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 [2024-11-09 04:52:24,060 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 [2024-11-09 04:52:24,123 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 19 treesize of output 11 [2024-11-09 04:52:24,212 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 [2024-11-09 04:52:24,430 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 [2024-11-09 04:52:24,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1318 backedges. 69 proven. 292 refuted. 0 times theorem prover too weak. 957 trivial. 0 not checked. [2024-11-09 04:52:24,518 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:52:24,849 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_863 (Array (_ BitVec 32) (_ BitVec 32)))) (bvsle (bvadd (_ bv1 33) ((_ sign_extend 1) (select (select (store |c_#memory_int| c_func_to_recursive_line_20_to_21_0_~b.base v_ArrVal_863) c_func_to_recursive_line_20_to_21_0_~a.base) c_func_to_recursive_line_20_to_21_0_~a.offset))) (_ bv2147483647 33))) is different from false [2024-11-09 04:52:24,851 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:52:24,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1820427533] [2024-11-09 04:52:24,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1820427533] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:52:24,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [350121034] [2024-11-09 04:52:24,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 04:52:24,851 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:52:24,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:52:24,852 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:52:24,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2024-11-09 04:52:25,415 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 04:52:25,415 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:52:25,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 138 conjuncts are in the unsatisfiable core [2024-11-09 04:52:25,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:25,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 04:52:25,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-09 04:52:25,624 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 [2024-11-09 04:52:25,832 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 [2024-11-09 04:52:25,928 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 19 treesize of output 11 [2024-11-09 04:52:26,054 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 [2024-11-09 04:52:26,238 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 [2024-11-09 04:52:26,327 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 19 treesize of output 11 [2024-11-09 04:52:26,469 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 [2024-11-09 04:52:26,688 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 [2024-11-09 04:52:26,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1318 backedges. 69 proven. 157 refuted. 0 times theorem prover too weak. 1092 trivial. 0 not checked. [2024-11-09 04:52:26,744 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:52:27,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [350121034] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:52:27,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266735853] [2024-11-09 04:52:27,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 04:52:27,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:52:27,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:52:27,070 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:52:27,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-09 04:52:27,306 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 04:52:27,307 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:52:27,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 137 conjuncts are in the unsatisfiable core [2024-11-09 04:52:27,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:27,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 04:52:27,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-09 04:52:27,359 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 [2024-11-09 04:52:27,542 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 [2024-11-09 04:52:27,572 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 19 treesize of output 11 [2024-11-09 04:52:27,593 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 [2024-11-09 04:52:27,802 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 [2024-11-09 04:52:27,844 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 19 treesize of output 11 [2024-11-09 04:52:27,894 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 [2024-11-09 04:52:28,101 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 [2024-11-09 04:52:28,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1318 backedges. 69 proven. 157 refuted. 0 times theorem prover too weak. 1092 trivial. 0 not checked. [2024-11-09 04:52:28,110 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:52:28,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266735853] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:52:28,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:52:28,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 16, 16] total 30 [2024-11-09 04:52:28,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87355776] [2024-11-09 04:52:28,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:52:28,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-09 04:52:28,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:28,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-09 04:52:28,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=987, Unknown=7, NotChecked=64, Total=1190 [2024-11-09 04:52:28,472 INFO L87 Difference]: Start difference. First operand 60 states and 73 transitions. Second operand has 31 states, 25 states have (on average 1.84) internal successors, (46), 23 states have internal predecessors, (46), 12 states have call successors, (16), 7 states have call predecessors, (16), 2 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-09 04:52:29,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:29,666 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2024-11-09 04:52:29,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-09 04:52:29,667 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 25 states have (on average 1.84) internal successors, (46), 23 states have internal predecessors, (46), 12 states have call successors, (16), 7 states have call predecessors, (16), 2 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) Word has length 161 [2024-11-09 04:52:29,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:29,669 INFO L225 Difference]: With dead ends: 68 [2024-11-09 04:52:29,669 INFO L226 Difference]: Without dead ends: 67 [2024-11-09 04:52:29,670 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 458 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=204, Invalid=1515, Unknown=7, NotChecked=80, Total=1806 [2024-11-09 04:52:29,671 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 24 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:29,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 92 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 04:52:29,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-09 04:52:29,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-11-09 04:52:29,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 47 states have internal predecessors, (49), 12 states have call successors, (12), 9 states have call predecessors, (12), 7 states have return successors, (20), 10 states have call predecessors, (20), 8 states have call successors, (20) [2024-11-09 04:52:29,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2024-11-09 04:52:29,691 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 161 [2024-11-09 04:52:29,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:29,692 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2024-11-09 04:52:29,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 25 states have (on average 1.84) internal successors, (46), 23 states have internal predecessors, (46), 12 states have call successors, (16), 7 states have call predecessors, (16), 2 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-09 04:52:29,692 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2024-11-09 04:52:29,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-09 04:52:29,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:29,696 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 24, 24, 24, 24, 24, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1] [2024-11-09 04:52:29,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2024-11-09 04:52:29,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-09 04:52:30,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2024-11-09 04:52:30,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 04:52:30,297 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2024-11-09 04:52:30,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:30,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1610883360, now seen corresponding path program 3 times [2024-11-09 04:52:30,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:30,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1800322751] [2024-11-09 04:52:30,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:52:30,299 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:52:30,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:30,300 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 04:52:30,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2024-11-09 04:52:30,769 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-09 04:52:30,769 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:52:30,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-09 04:52:30,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:30,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-09 04:52:30,909 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 [2024-11-09 04:52:31,209 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 [2024-11-09 04:52:31,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 04:52:31,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 918 proven. 32 refuted. 0 times theorem prover too weak. 1429 trivial. 0 not checked. [2024-11-09 04:52:31,257 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:52:31,710 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1166 (Array (_ BitVec 32) (_ BitVec 32)))) (bvsle (bvadd ((_ sign_extend 1) (select (select (store |c_#memory_int| c_func_to_recursive_line_20_to_21_0_~b.base v_ArrVal_1166) c_func_to_recursive_line_20_to_21_0_~a.base) c_func_to_recursive_line_20_to_21_0_~a.offset)) (_ bv1 33)) (_ bv2147483647 33))) is different from false [2024-11-09 04:52:31,712 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:52:31,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1800322751] [2024-11-09 04:52:31,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1800322751] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:52:31,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1992001875] [2024-11-09 04:52:31,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:52:31,713 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:52:31,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:52:31,716 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:52:31,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2024-11-09 04:52:32,693 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-09 04:52:32,694 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:52:32,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-09 04:52:32,747 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:32,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-09 04:52:32,888 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 04:52:32,931 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 [2024-11-09 04:52:33,184 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 [2024-11-09 04:52:33,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 04:52:33,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 918 proven. 32 refuted. 0 times theorem prover too weak. 1429 trivial. 0 not checked. [2024-11-09 04:52:33,197 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:52:33,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1992001875] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:52:33,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277410455] [2024-11-09 04:52:33,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:52:33,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:52:33,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:52:33,562 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:52:33,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-09 04:52:35,635 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-09 04:52:35,636 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:52:35,645 INFO L255 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-09 04:52:35,652 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:35,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-09 04:52:35,764 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 04:52:35,785 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 [2024-11-09 04:52:36,023 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 [2024-11-09 04:52:36,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 04:52:36,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2379 backedges. 918 proven. 32 refuted. 0 times theorem prover too weak. 1429 trivial. 0 not checked. [2024-11-09 04:52:36,035 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:52:36,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277410455] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:52:36,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:52:36,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 12 [2024-11-09 04:52:36,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689765305] [2024-11-09 04:52:36,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:52:36,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 04:52:36,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:36,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 04:52:36,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=190, Unknown=10, NotChecked=28, Total=272 [2024-11-09 04:52:36,438 INFO L87 Difference]: Start difference. First operand 67 states and 81 transitions. Second operand has 13 states, 9 states have (on average 3.0) internal successors, (27), 11 states have internal predecessors, (27), 6 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 04:52:36,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:36,740 INFO L93 Difference]: Finished difference Result 67 states and 81 transitions. [2024-11-09 04:52:36,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 04:52:36,743 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 9 states have (on average 3.0) internal successors, (27), 11 states have internal predecessors, (27), 6 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 214 [2024-11-09 04:52:36,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:36,744 INFO L225 Difference]: With dead ends: 67 [2024-11-09 04:52:36,744 INFO L226 Difference]: Without dead ends: 0 [2024-11-09 04:52:36,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 635 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=328, Unknown=13, NotChecked=38, Total=462 [2024-11-09 04:52:36,745 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 14 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:36,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 41 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:52:36,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-09 04:52:36,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-09 04:52:36,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:52:36,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-09 04:52:36,747 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 214 [2024-11-09 04:52:36,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:36,748 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-09 04:52:36,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 9 states have (on average 3.0) internal successors, (27), 11 states have internal predecessors, (27), 6 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-09 04:52:36,748 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-09 04:52:36,749 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-09 04:52:36,752 INFO L782 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_20_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2024-11-09 04:52:36,753 INFO L782 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_20_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2024-11-09 04:52:36,753 INFO L782 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_21_to_21_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2024-11-09 04:52:36,753 INFO L782 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_21_to_21_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2024-11-09 04:52:36,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2024-11-09 04:52:36,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2024-11-09 04:52:37,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-11-09 04:52:37,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:52:37,361 INFO L407 BasicCegarLoop]: Path program histogram: [6, 3, 1, 1, 1, 1] [2024-11-09 04:52:37,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-09 04:52:41,004 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 04:52:41,012 WARN L162 FloydHoareUtils]: Requires clause for func_to_recursive_line_20_to_21_0 contained old-variable. Original clause: (and (= (_ bv0 32) |func_to_recursive_line_20_to_21_0_#in~b.offset|) (= |old(#memory_int)| |#memory_int|) (not (= |func_to_recursive_line_20_to_21_0_#in~b.base| |func_to_recursive_line_20_to_21_0_#in~a.base|))) Eliminated clause: (and (= (_ bv0 32) |func_to_recursive_line_20_to_21_0_#in~b.offset|) (not (= |func_to_recursive_line_20_to_21_0_#in~b.base| |func_to_recursive_line_20_to_21_0_#in~a.base|))) [2024-11-09 04:52:41,020 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~b!offset [2024-11-09 04:52:41,021 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~b!base [2024-11-09 04:52:41,021 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~a!base [2024-11-09 04:52:41,022 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~b!offset [2024-11-09 04:52:41,022 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~b!base [2024-11-09 04:52:41,022 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #in~a!base [2024-11-09 04:52:41,025 WARN L162 FloydHoareUtils]: Requires clause for func_to_recursive_line_21_to_21_0 contained old-variable. Original clause: (= |old(#memory_int)| |#memory_int|) Eliminated clause: true [2024-11-09 04:52:41,026 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: ArrayStoreExpression [2024-11-09 04:52:41,026 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: #memory_int [2024-11-09 04:52:41,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 04:52:41 BoogieIcfgContainer [2024-11-09 04:52:41,027 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 04:52:41,027 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 04:52:41,027 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 04:52:41,028 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 04:52:41,028 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:51:24" (3/4) ... [2024-11-09 04:52:41,031 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-09 04:52:41,036 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_20_to_21_0 [2024-11-09 04:52:41,037 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_21_to_21_0 [2024-11-09 04:52:41,041 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-09 04:52:41,042 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-09 04:52:41,042 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-09 04:52:41,042 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-09 04:52:41,157 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 04:52:41,158 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/witness.yml [2024-11-09 04:52:41,158 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 04:52:41,159 INFO L158 Benchmark]: Toolchain (without parser) took 77224.92ms. Allocated memory was 67.1MB in the beginning and 163.6MB in the end (delta: 96.5MB). Free memory was 43.1MB in the beginning and 98.6MB in the end (delta: -55.5MB). Peak memory consumption was 42.6MB. Max. memory is 16.1GB. [2024-11-09 04:52:41,159 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 67.1MB. Free memory was 42.8MB in the beginning and 42.7MB in the end (delta: 81.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 04:52:41,160 INFO L158 Benchmark]: CACSL2BoogieTranslator took 382.21ms. Allocated memory was 67.1MB in the beginning and 113.2MB in the end (delta: 46.1MB). Free memory was 42.9MB in the beginning and 90.5MB in the end (delta: -47.6MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2024-11-09 04:52:41,160 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.22ms. Allocated memory is still 113.2MB. Free memory was 90.5MB in the beginning and 89.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 04:52:41,160 INFO L158 Benchmark]: Boogie Preprocessor took 39.62ms. Allocated memory is still 113.2MB. Free memory was 89.2MB in the beginning and 87.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 04:52:41,160 INFO L158 Benchmark]: RCFGBuilder took 448.44ms. Allocated memory is still 113.2MB. Free memory was 87.6MB in the beginning and 74.6MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 04:52:41,161 INFO L158 Benchmark]: TraceAbstraction took 76169.71ms. Allocated memory was 113.2MB in the beginning and 163.6MB in the end (delta: 50.3MB). Free memory was 74.1MB in the beginning and 102.8MB in the end (delta: -28.7MB). Peak memory consumption was 92.6MB. Max. memory is 16.1GB. [2024-11-09 04:52:41,161 INFO L158 Benchmark]: Witness Printer took 131.09ms. Allocated memory is still 163.6MB. Free memory was 102.8MB in the beginning and 98.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 04:52:41,162 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 67.1MB. Free memory was 42.8MB in the beginning and 42.7MB in the end (delta: 81.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 382.21ms. Allocated memory was 67.1MB in the beginning and 113.2MB in the end (delta: 46.1MB). Free memory was 42.9MB in the beginning and 90.5MB in the end (delta: -47.6MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.22ms. Allocated memory is still 113.2MB. Free memory was 90.5MB in the beginning and 89.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.62ms. Allocated memory is still 113.2MB. Free memory was 89.2MB in the beginning and 87.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 448.44ms. Allocated memory is still 113.2MB. Free memory was 87.6MB in the beginning and 74.6MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 76169.71ms. Allocated memory was 113.2MB in the beginning and 163.6MB in the end (delta: 50.3MB). Free memory was 74.1MB in the beginning and 102.8MB in the end (delta: -28.7MB). Peak memory consumption was 92.6MB. Max. memory is 16.1GB. * Witness Printer took 131.09ms. Allocated memory is still 163.6MB. Free memory was 102.8MB in the beginning and 98.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #in~b!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #in~b!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #in~a!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #in~b!offset - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #in~b!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #in~a!base - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: ArrayStoreExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 30]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 30]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 31 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 72.4s, OverallIterations: 13, TraceHistogramMax: 28, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 12.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 311 SdHoareTripleChecker+Valid, 5.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 311 mSDsluCounter, 1199 SdHoareTripleChecker+Invalid, 4.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1010 mSDsCounter, 210 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2925 IncrementalHoareTripleChecker+Invalid, 3135 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 210 mSolverCounterUnsat, 189 mSDtfsCounter, 2925 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2577 GetRequests, 2195 SyntacticMatches, 4 SemanticMatches, 378 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 5014 ImplicationChecksByTransitivity, 20.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=12, InterpolantAutomatonStates: 160, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 4.9s SatisfiabilityAnalysisTime, 45.5s InterpolantComputationTime, 2044 NumberOfCodeBlocks, 1918 NumberOfCodeBlocksAsserted, 87 NumberOfCheckSat, 2453 ConstructedInterpolants, 0 QuantifiedInterpolants, 19767 SizeOfPredicates, 438 NumberOfNonLiveVariables, 5372 ConjunctsInSsa, 1511 ConjunctsInUnsatCore, 44 InterpolantComputations, 3 PerfectInterpolantSequences, 12366/14065 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-09 04:52:41,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8710fc15-4df4-4fcd-9ea7-807535406f93/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE