./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_prod4br-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_nla-digbench/recursified_prod4br-ll.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 96f1211cbeeae798f0ae4041c6e80d5023e7b1c38257b583d7afbb4e6848597b --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 17:52:35,400 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 17:52:35,467 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-12 17:52:35,472 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 17:52:35,473 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 17:52:35,515 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 17:52:35,515 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 17:52:35,516 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 17:52:35,517 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 17:52:35,518 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 17:52:35,518 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 17:52:35,518 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 17:52:35,519 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 17:52:35,521 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 17:52:35,522 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 17:52:35,522 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 17:52:35,522 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 17:52:35,523 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 17:52:35,523 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 17:52:35,523 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 17:52:35,524 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 17:52:35,527 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 17:52:35,527 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 17:52:35,528 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 17:52:35,528 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 17:52:35,528 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-12 17:52:35,528 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 17:52:35,529 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 17:52:35,529 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 17:52:35,529 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 17:52:35,529 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 17:52:35,530 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 17:52:35,530 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 17:52:35,531 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 17:52:35,531 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 17:52:35,532 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 17:52:35,532 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 17:52:35,533 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 17:52:35,533 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 17:52:35,534 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 17:52:35,534 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 17:52:35,534 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 17:52:35,535 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 17:52:35,535 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 17:52:35,535 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 96f1211cbeeae798f0ae4041c6e80d5023e7b1c38257b583d7afbb4e6848597b [2024-11-12 17:52:35,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 17:52:35,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 17:52:35,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 17:52:35,813 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 17:52:35,813 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 17:52:35,814 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_prod4br-ll.c [2024-11-12 17:52:37,235 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 17:52:37,435 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 17:52:37,435 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_prod4br-ll.c [2024-11-12 17:52:37,444 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3189d928b/af75ff3ec3d540db86e915facd2c5454/FLAGfcfda4aef [2024-11-12 17:52:37,456 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3189d928b/af75ff3ec3d540db86e915facd2c5454 [2024-11-12 17:52:37,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 17:52:37,459 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 17:52:37,460 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 17:52:37,460 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 17:52:37,466 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 17:52:37,466 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 05:52:37" (1/1) ... [2024-11-12 17:52:37,467 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c50d759 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:52:37, skipping insertion in model container [2024-11-12 17:52:37,467 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 05:52:37" (1/1) ... [2024-11-12 17:52:37,493 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 17:52:37,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 17:52:37,726 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 17:52:37,765 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 17:52:37,792 INFO L204 MainTranslator]: Completed translation [2024-11-12 17:52:37,793 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:52:37 WrapperNode [2024-11-12 17:52:37,793 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 17:52:37,794 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 17:52:37,794 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 17:52:37,794 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 17:52:37,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:52:37" (1/1) ... [2024-11-12 17:52:37,811 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:52:37" (1/1) ... [2024-11-12 17:52:37,833 INFO L138 Inliner]: procedures = 16, calls = 87, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 86 [2024-11-12 17:52:37,834 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 17:52:37,835 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 17:52:37,835 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 17:52:37,835 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 17:52:37,844 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:52:37" (1/1) ... [2024-11-12 17:52:37,844 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:52:37" (1/1) ... [2024-11-12 17:52:37,847 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:52:37" (1/1) ... [2024-11-12 17:52:37,870 INFO L175 MemorySlicer]: Split 57 memory accesses to 7 slices as follows [2, 15, 9, 15, 7, 5, 4]. 26 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 16 writes are split as follows [0, 4, 4, 4, 2, 1, 1]. [2024-11-12 17:52:37,874 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:52:37" (1/1) ... [2024-11-12 17:52:37,874 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:52:37" (1/1) ... [2024-11-12 17:52:37,882 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:52:37" (1/1) ... [2024-11-12 17:52:37,886 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:52:37" (1/1) ... [2024-11-12 17:52:37,888 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:52:37" (1/1) ... [2024-11-12 17:52:37,890 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:52:37" (1/1) ... [2024-11-12 17:52:37,893 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 17:52:37,894 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 17:52:37,894 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 17:52:37,894 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 17:52:37,895 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:52:37" (1/1) ... [2024-11-12 17:52:37,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 17:52:37,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:52:37,937 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 17:52:37,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 17:52:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 17:52:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 17:52:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 17:52:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-12 17:52:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-12 17:52:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-12 17:52:37,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-12 17:52:37,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-12 17:52:37,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-12 17:52:37,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 17:52:37,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 17:52:37,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-12 17:52:37,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-12 17:52:37,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-12 17:52:37,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-12 17:52:37,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-12 17:52:37,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 17:52:37,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 17:52:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 17:52:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 17:52:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-12 17:52:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-12 17:52:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-12 17:52:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-12 17:52:37,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-12 17:52:37,994 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_0_to_51_0 [2024-11-12 17:52:37,994 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_0_to_51_0 [2024-11-12 17:52:37,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-12 17:52:37,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-12 17:52:37,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-12 17:52:38,126 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 17:52:38,129 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 17:52:38,706 INFO L? ?]: Removed 106 outVars from TransFormulas that were not future-live. [2024-11-12 17:52:38,706 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 17:52:38,730 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 17:52:38,730 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-12 17:52:38,730 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 05:52:38 BoogieIcfgContainer [2024-11-12 17:52:38,731 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 17:52:38,734 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 17:52:38,734 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 17:52:38,738 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 17:52:38,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 05:52:37" (1/3) ... [2024-11-12 17:52:38,739 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb960b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 05:52:38, skipping insertion in model container [2024-11-12 17:52:38,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:52:37" (2/3) ... [2024-11-12 17:52:38,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb960b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 05:52:38, skipping insertion in model container [2024-11-12 17:52:38,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 05:52:38" (3/3) ... [2024-11-12 17:52:38,745 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_prod4br-ll.c [2024-11-12 17:52:38,762 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 17:52:38,763 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2024-11-12 17:52:38,834 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 17:52:38,844 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2a46a9a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 17:52:38,844 INFO L334 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2024-11-12 17:52:38,849 INFO L276 IsEmpty]: Start isEmpty. Operand has 118 states, 68 states have (on average 1.7794117647058822) internal successors, (121), 111 states have internal predecessors, (121), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-12 17:52:38,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-12 17:52:38,856 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:52:38,856 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:52:38,857 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_0_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-12 17:52:38,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:52:38,865 INFO L85 PathProgramCache]: Analyzing trace with hash 124101721, now seen corresponding path program 1 times [2024-11-12 17:52:38,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:52:38,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950537123] [2024-11-12 17:52:38,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:38,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:52:39,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:39,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:52:39,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:52:39,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950537123] [2024-11-12 17:52:39,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950537123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:52:39,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:52:39,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 17:52:39,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860844688] [2024-11-12 17:52:39,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:52:39,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-12 17:52:39,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:52:39,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-12 17:52:39,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-12 17:52:39,144 INFO L87 Difference]: Start difference. First operand has 118 states, 68 states have (on average 1.7794117647058822) internal successors, (121), 111 states have internal predecessors, (121), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 17:52:39,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:52:39,178 INFO L93 Difference]: Finished difference Result 232 states and 262 transitions. [2024-11-12 17:52:39,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-12 17:52:39,180 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-12 17:52:39,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:52:39,188 INFO L225 Difference]: With dead ends: 232 [2024-11-12 17:52:39,189 INFO L226 Difference]: Without dead ends: 111 [2024-11-12 17:52:39,193 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-12 17:52:39,196 INFO L435 NwaCegarLoop]: 127 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, 127 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 [2024-11-12 17:52:39,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 17:52:39,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-12 17:52:39,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2024-11-12 17:52:39,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 63 states have (on average 1.7777777777777777) internal successors, (112), 105 states have internal predecessors, (112), 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) [2024-11-12 17:52:39,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 120 transitions. [2024-11-12 17:52:39,241 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 120 transitions. Word has length 8 [2024-11-12 17:52:39,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:52:39,241 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 120 transitions. [2024-11-12 17:52:39,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 17:52:39,242 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 120 transitions. [2024-11-12 17:52:39,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-12 17:52:39,242 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:52:39,242 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:52:39,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 17:52:39,243 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_0_to_51_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-12 17:52:39,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:52:39,244 INFO L85 PathProgramCache]: Analyzing trace with hash 181360023, now seen corresponding path program 1 times [2024-11-12 17:52:39,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:52:39,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125852938] [2024-11-12 17:52:39,245 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:39,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:52:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:52:39,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [282204446] [2024-11-12 17:52:39,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:39,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:52:39,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:52:39,322 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 17:52:39,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 17:52:39,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:39,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-12 17:52:39,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:52:39,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:52:39,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:52:39,707 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 30 treesize of output 18 [2024-11-12 17:52:39,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:52:39,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2024-11-12 17:52:39,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:52:39,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-12 17:52:39,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-12 17:52:39,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:52:39,865 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 17:52:39,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:52:39,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125852938] [2024-11-12 17:52:39,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:52:39,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282204446] [2024-11-12 17:52:39,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282204446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:52:39,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:52:39,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 17:52:39,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137739400] [2024-11-12 17:52:39,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:52:39,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 17:52:39,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:52:39,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 17:52:39,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-12 17:52:39,877 INFO L87 Difference]: Start difference. First operand 111 states and 120 transitions. Second operand has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 7 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 17:52:40,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:52:40,340 INFO L93 Difference]: Finished difference Result 164 states and 183 transitions. [2024-11-12 17:52:40,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 17:52:40,340 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 7 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-12 17:52:40,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:52:40,342 INFO L225 Difference]: With dead ends: 164 [2024-11-12 17:52:40,342 INFO L226 Difference]: Without dead ends: 163 [2024-11-12 17:52:40,343 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-12 17:52:40,344 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 109 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-12 17:52:40,344 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 599 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-12 17:52:40,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-12 17:52:40,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 127. [2024-11-12 17:52:40,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 77 states have (on average 1.7532467532467533) internal successors, (135), 119 states have internal predecessors, (135), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-12 17:52:40,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 146 transitions. [2024-11-12 17:52:40,359 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 146 transitions. Word has length 8 [2024-11-12 17:52:40,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:52:40,359 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 146 transitions. [2024-11-12 17:52:40,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 7 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 17:52:40,359 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 146 transitions. [2024-11-12 17:52:40,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-12 17:52:40,360 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:52:40,360 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:52:40,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 17:52:40,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:52:40,561 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_0_to_51_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-12 17:52:40,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:52:40,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1327193481, now seen corresponding path program 1 times [2024-11-12 17:52:40,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:52:40,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2880692] [2024-11-12 17:52:40,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:40,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:52:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:52:40,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [368441369] [2024-11-12 17:52:40,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:40,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:52:40,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:52:40,613 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 17:52:40,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 17:52:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:40,717 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-12 17:52:40,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:52:40,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:52:40,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:52:40,850 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 30 treesize of output 18 [2024-11-12 17:52:40,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:52:40,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-12 17:52:40,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:52:40,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-12 17:52:40,948 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 [2024-11-12 17:52:40,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:52:40,974 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 17:52:40,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:52:40,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2880692] [2024-11-12 17:52:40,975 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:52:40,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368441369] [2024-11-12 17:52:40,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368441369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:52:40,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:52:40,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 17:52:40,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880418231] [2024-11-12 17:52:40,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:52:40,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 17:52:40,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:52:40,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 17:52:40,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-12 17:52:40,980 INFO L87 Difference]: Start difference. First operand 127 states and 146 transitions. Second operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 17:52:41,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:52:41,311 INFO L93 Difference]: Finished difference Result 163 states and 182 transitions. [2024-11-12 17:52:41,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 17:52:41,312 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-12 17:52:41,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:52:41,313 INFO L225 Difference]: With dead ends: 163 [2024-11-12 17:52:41,314 INFO L226 Difference]: Without dead ends: 162 [2024-11-12 17:52:41,314 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-12 17:52:41,315 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 106 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-12 17:52:41,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 603 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-12 17:52:41,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-12 17:52:41,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 127. [2024-11-12 17:52:41,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 77 states have (on average 1.7402597402597402) internal successors, (134), 119 states have internal predecessors, (134), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-12 17:52:41,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 145 transitions. [2024-11-12 17:52:41,339 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 145 transitions. Word has length 9 [2024-11-12 17:52:41,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:52:41,339 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 145 transitions. [2024-11-12 17:52:41,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 17:52:41,340 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 145 transitions. [2024-11-12 17:52:41,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-12 17:52:41,344 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:52:41,344 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:52:41,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 17:52:41,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-12 17:52:41,545 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_0_to_51_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-12 17:52:41,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:52:41,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1806674983, now seen corresponding path program 1 times [2024-11-12 17:52:41,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:52:41,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096471249] [2024-11-12 17:52:41,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:41,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:52:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:52:41,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1504586117] [2024-11-12 17:52:41,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:41,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:52:41,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:52:41,592 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 17:52:41,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 17:52:41,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:41,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-12 17:52:41,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:52:41,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:52:41,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:52:41,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-11-12 17:52:41,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:52:41,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2024-11-12 17:52:41,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:52:41,819 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 [2024-11-12 17:52:41,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-12 17:52:41,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-12 17:52:41,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:52:41,972 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 17:52:41,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:52:41,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096471249] [2024-11-12 17:52:41,972 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:52:41,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504586117] [2024-11-12 17:52:41,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504586117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:52:41,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:52:41,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 17:52:41,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867271491] [2024-11-12 17:52:41,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:52:41,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 17:52:41,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:52:41,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 17:52:41,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-12 17:52:41,975 INFO L87 Difference]: Start difference. First operand 127 states and 145 transitions. Second operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 17:52:42,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:52:42,409 INFO L93 Difference]: Finished difference Result 162 states and 181 transitions. [2024-11-12 17:52:42,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 17:52:42,409 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-12 17:52:42,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:52:42,410 INFO L225 Difference]: With dead ends: 162 [2024-11-12 17:52:42,410 INFO L226 Difference]: Without dead ends: 161 [2024-11-12 17:52:42,411 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-12 17:52:42,411 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 112 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 17:52:42,412 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 677 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 17:52:42,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-12 17:52:42,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 127. [2024-11-12 17:52:42,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 77 states have (on average 1.7272727272727273) internal successors, (133), 119 states have internal predecessors, (133), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-12 17:52:42,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 144 transitions. [2024-11-12 17:52:42,421 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 144 transitions. Word has length 10 [2024-11-12 17:52:42,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:52:42,422 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 144 transitions. [2024-11-12 17:52:42,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 17:52:42,422 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 144 transitions. [2024-11-12 17:52:42,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-12 17:52:42,422 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:52:42,423 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:52:42,439 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 17:52:42,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:52:42,627 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_0_to_51_0Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-12 17:52:42,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:52:42,627 INFO L85 PathProgramCache]: Analyzing trace with hash -172349557, now seen corresponding path program 1 times [2024-11-12 17:52:42,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:52:42,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157454202] [2024-11-12 17:52:42,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:42,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:52:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:52:42,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [540995861] [2024-11-12 17:52:42,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:42,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:52:42,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:52:42,670 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 17:52:42,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 17:52:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:42,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-12 17:52:42,774 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:52:42,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:52:42,784 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 11 [2024-11-12 17:52:42,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:52:42,788 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 11 [2024-11-12 17:52:42,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:52:42,791 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 [2024-11-12 17:52:42,816 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 7 treesize of output 3 [2024-11-12 17:52:42,819 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 7 treesize of output 3 [2024-11-12 17:52:42,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:52:42,971 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 17:52:42,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:52:42,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157454202] [2024-11-12 17:52:42,972 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:52:42,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540995861] [2024-11-12 17:52:42,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540995861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:52:42,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:52:42,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 17:52:42,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583084749] [2024-11-12 17:52:42,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:52:42,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 17:52:42,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:52:42,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 17:52:42,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-12 17:52:42,974 INFO L87 Difference]: Start difference. First operand 127 states and 144 transitions. Second operand has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 17:52:43,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:52:43,282 INFO L93 Difference]: Finished difference Result 231 states and 259 transitions. [2024-11-12 17:52:43,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 17:52:43,282 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-12 17:52:43,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:52:43,285 INFO L225 Difference]: With dead ends: 231 [2024-11-12 17:52:43,285 INFO L226 Difference]: Without dead ends: 230 [2024-11-12 17:52:43,285 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-12 17:52:43,286 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 202 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-12 17:52:43,287 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 520 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-12 17:52:43,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-12 17:52:43,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 176. [2024-11-12 17:52:43,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 122 states have (on average 1.7704918032786885) internal successors, (216), 165 states have internal predecessors, (216), 7 states have call successors, (7), 4 states have call predecessors, (7), 5 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2024-11-12 17:52:43,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 234 transitions. [2024-11-12 17:52:43,301 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 234 transitions. Word has length 11 [2024-11-12 17:52:43,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:52:43,301 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 234 transitions. [2024-11-12 17:52:43,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 17:52:43,305 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 234 transitions. [2024-11-12 17:52:43,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-12 17:52:43,305 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:52:43,306 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:52:43,323 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 17:52:43,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:52:43,506 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_0_to_51_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-12 17:52:43,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:52:43,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1047868901, now seen corresponding path program 1 times [2024-11-12 17:52:43,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:52:43,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39708165] [2024-11-12 17:52:43,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:43,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:52:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:43,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:52:43,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:52:43,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39708165] [2024-11-12 17:52:43,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39708165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:52:43,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:52:43,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 17:52:43,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051988193] [2024-11-12 17:52:43,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:52:43,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 17:52:43,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:52:43,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 17:52:43,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-12 17:52:43,751 INFO L87 Difference]: Start difference. First operand 176 states and 234 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 17:52:44,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:52:44,216 INFO L93 Difference]: Finished difference Result 300 states and 399 transitions. [2024-11-12 17:52:44,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 17:52:44,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-12 17:52:44,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:52:44,218 INFO L225 Difference]: With dead ends: 300 [2024-11-12 17:52:44,219 INFO L226 Difference]: Without dead ends: 299 [2024-11-12 17:52:44,219 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-12 17:52:44,220 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 194 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-12 17:52:44,220 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 612 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-12 17:52:44,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-12 17:52:44,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 205. [2024-11-12 17:52:44,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 147 states have (on average 1.7619047619047619) internal successors, (259), 191 states have internal predecessors, (259), 9 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (16), 9 states have call predecessors, (16), 9 states have call successors, (16) [2024-11-12 17:52:44,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 284 transitions. [2024-11-12 17:52:44,241 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 284 transitions. Word has length 12 [2024-11-12 17:52:44,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:52:44,241 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 284 transitions. [2024-11-12 17:52:44,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 17:52:44,242 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 284 transitions. [2024-11-12 17:52:44,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-12 17:52:44,242 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:52:44,242 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:52:44,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 17:52:44,243 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_0_to_51_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-12 17:52:44,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:52:44,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1875802509, now seen corresponding path program 1 times [2024-11-12 17:52:44,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:52:44,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548507982] [2024-11-12 17:52:44,245 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:44,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:52:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:44,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:52:44,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:52:44,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548507982] [2024-11-12 17:52:44,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548507982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:52:44,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:52:44,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 17:52:44,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126634697] [2024-11-12 17:52:44,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:52:44,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 17:52:44,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:52:44,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 17:52:44,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-12 17:52:44,630 INFO L87 Difference]: Start difference. First operand 205 states and 284 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 17:52:45,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:52:45,128 INFO L93 Difference]: Finished difference Result 299 states and 397 transitions. [2024-11-12 17:52:45,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 17:52:45,128 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-12 17:52:45,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:52:45,130 INFO L225 Difference]: With dead ends: 299 [2024-11-12 17:52:45,130 INFO L226 Difference]: Without dead ends: 298 [2024-11-12 17:52:45,131 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-12 17:52:45,133 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 196 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-12 17:52:45,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 527 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-12 17:52:45,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-11-12 17:52:45,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 205. [2024-11-12 17:52:45,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 147 states have (on average 1.748299319727891) internal successors, (257), 191 states have internal predecessors, (257), 9 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (16), 9 states have call predecessors, (16), 9 states have call successors, (16) [2024-11-12 17:52:45,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 282 transitions. [2024-11-12 17:52:45,146 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 282 transitions. Word has length 13 [2024-11-12 17:52:45,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:52:45,146 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 282 transitions. [2024-11-12 17:52:45,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 17:52:45,147 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 282 transitions. [2024-11-12 17:52:45,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-12 17:52:45,147 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:52:45,147 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:52:45,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 17:52:45,147 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_0_to_51_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-12 17:52:45,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:52:45,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1979664291, now seen corresponding path program 1 times [2024-11-12 17:52:45,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:52:45,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792896187] [2024-11-12 17:52:45,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:45,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:52:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:52:45,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1154819318] [2024-11-12 17:52:45,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:45,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:52:45,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:52:45,175 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 17:52:45,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 17:52:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:45,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-11-12 17:52:45,294 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:52:45,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:52:45,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:52:45,335 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 15 treesize of output 1 [2024-11-12 17:52:45,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:52:45,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-12 17:52:45,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-12 17:52:45,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-12 17:52:45,472 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 [2024-11-12 17:52:45,619 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 [2024-11-12 17:52:45,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-12 17:52:45,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:52:45,674 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 17:52:45,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:52:45,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792896187] [2024-11-12 17:52:45,674 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:52:45,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154819318] [2024-11-12 17:52:45,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154819318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:52:45,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:52:45,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-12 17:52:45,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138421554] [2024-11-12 17:52:45,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:52:45,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 17:52:45,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:52:45,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 17:52:45,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-12 17:52:45,676 INFO L87 Difference]: Start difference. First operand 205 states and 282 transitions. Second operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 17:52:46,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:52:46,492 INFO L93 Difference]: Finished difference Result 280 states and 362 transitions. [2024-11-12 17:52:46,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-12 17:52:46,493 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-12 17:52:46,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:52:46,495 INFO L225 Difference]: With dead ends: 280 [2024-11-12 17:52:46,495 INFO L226 Difference]: Without dead ends: 279 [2024-11-12 17:52:46,495 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2024-11-12 17:52:46,496 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 182 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-12 17:52:46,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 863 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-12 17:52:46,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-12 17:52:46,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 241. [2024-11-12 17:52:46,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 181 states have (on average 1.7900552486187846) internal successors, (324), 227 states have internal predecessors, (324), 11 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (19), 10 states have call predecessors, (19), 11 states have call successors, (19) [2024-11-12 17:52:46,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 354 transitions. [2024-11-12 17:52:46,516 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 354 transitions. Word has length 14 [2024-11-12 17:52:46,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:52:46,516 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 354 transitions. [2024-11-12 17:52:46,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 17:52:46,516 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 354 transitions. [2024-11-12 17:52:46,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-12 17:52:46,517 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:52:46,517 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:52:46,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-12 17:52:46,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:52:46,718 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_0_to_51_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-12 17:52:46,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:52:46,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1240050801, now seen corresponding path program 1 times [2024-11-12 17:52:46,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:52:46,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882314365] [2024-11-12 17:52:46,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:46,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:52:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:52:46,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1868899026] [2024-11-12 17:52:46,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:46,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:52:46,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:52:46,741 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 17:52:46,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 17:52:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:46,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-12 17:52:46,858 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:52:46,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:52:46,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:52:46,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-12 17:52:46,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-12 17:52:46,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-12 17:52:46,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-12 17:52:47,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2024-11-12 17:52:47,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-12 17:52:47,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:52:47,201 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 17:52:47,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:52:47,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882314365] [2024-11-12 17:52:47,202 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:52:47,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868899026] [2024-11-12 17:52:47,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868899026] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:52:47,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:52:47,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 17:52:47,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729892136] [2024-11-12 17:52:47,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:52:47,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 17:52:47,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:52:47,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 17:52:47,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-12 17:52:47,203 INFO L87 Difference]: Start difference. First operand 241 states and 354 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 17:52:48,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:52:48,341 INFO L93 Difference]: Finished difference Result 275 states and 357 transitions. [2024-11-12 17:52:48,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 17:52:48,345 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-12 17:52:48,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:52:48,347 INFO L225 Difference]: With dead ends: 275 [2024-11-12 17:52:48,347 INFO L226 Difference]: Without dead ends: 274 [2024-11-12 17:52:48,347 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-11-12 17:52:48,348 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 169 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-12 17:52:48,348 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 636 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-12 17:52:48,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-12 17:52:48,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 241. [2024-11-12 17:52:48,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 181 states have (on average 1.7845303867403315) internal successors, (323), 227 states have internal predecessors, (323), 11 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (19), 10 states have call predecessors, (19), 11 states have call successors, (19) [2024-11-12 17:52:48,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 353 transitions. [2024-11-12 17:52:48,365 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 353 transitions. Word has length 15 [2024-11-12 17:52:48,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:52:48,367 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 353 transitions. [2024-11-12 17:52:48,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 17:52:48,367 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 353 transitions. [2024-11-12 17:52:48,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-12 17:52:48,368 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:52:48,368 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:52:48,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-12 17:52:48,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:52:48,573 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_0_to_51_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-12 17:52:48,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:52:48,573 INFO L85 PathProgramCache]: Analyzing trace with hash 59777144, now seen corresponding path program 1 times [2024-11-12 17:52:48,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:52:48,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668273445] [2024-11-12 17:52:48,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:48,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:52:48,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:48,873 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-12 17:52:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:48,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:52:48,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:52:48,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668273445] [2024-11-12 17:52:48,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668273445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:52:48,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:52:48,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 17:52:48,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312505625] [2024-11-12 17:52:48,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:52:48,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 17:52:48,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:52:48,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 17:52:48,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-12 17:52:48,881 INFO L87 Difference]: Start difference. First operand 241 states and 353 transitions. Second operand has 7 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 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) [2024-11-12 17:52:49,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:52:49,041 INFO L93 Difference]: Finished difference Result 353 states and 512 transitions. [2024-11-12 17:52:49,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 17:52:49,042 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 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 26 [2024-11-12 17:52:49,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:52:49,045 INFO L225 Difference]: With dead ends: 353 [2024-11-12 17:52:49,045 INFO L226 Difference]: Without dead ends: 352 [2024-11-12 17:52:49,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-12 17:52:49,046 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 122 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 17:52:49,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 593 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 17:52:49,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-11-12 17:52:49,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 310. [2024-11-12 17:52:49,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 241 states have (on average 1.7800829875518671) internal successors, (429), 290 states have internal predecessors, (429), 16 states have call successors, (16), 7 states have call predecessors, (16), 11 states have return successors, (36), 14 states have call predecessors, (36), 16 states have call successors, (36) [2024-11-12 17:52:49,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 481 transitions. [2024-11-12 17:52:49,064 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 481 transitions. Word has length 26 [2024-11-12 17:52:49,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:52:49,064 INFO L471 AbstractCegarLoop]: Abstraction has 310 states and 481 transitions. [2024-11-12 17:52:49,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 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) [2024-11-12 17:52:49,065 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 481 transitions. [2024-11-12 17:52:49,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-12 17:52:49,065 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:52:49,066 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:52:49,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-12 17:52:49,066 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-12 17:52:49,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:52:49,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1855126068, now seen corresponding path program 1 times [2024-11-12 17:52:49,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:52:49,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055778541] [2024-11-12 17:52:49,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:49,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:52:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:49,285 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-12 17:52:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:49,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-12 17:52:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:49,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:52:49,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:52:49,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055778541] [2024-11-12 17:52:49,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055778541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:52:49,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:52:49,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-12 17:52:49,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177440031] [2024-11-12 17:52:49,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:52:49,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 17:52:49,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:52:49,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 17:52:49,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-12 17:52:49,382 INFO L87 Difference]: Start difference. First operand 310 states and 481 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 17:52:49,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:52:49,661 INFO L93 Difference]: Finished difference Result 369 states and 590 transitions. [2024-11-12 17:52:49,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-12 17:52:49,662 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2024-11-12 17:52:49,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:52:49,665 INFO L225 Difference]: With dead ends: 369 [2024-11-12 17:52:49,665 INFO L226 Difference]: Without dead ends: 350 [2024-11-12 17:52:49,665 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-12 17:52:49,666 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 119 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-12 17:52:49,666 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 594 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-12 17:52:49,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2024-11-12 17:52:49,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 326. [2024-11-12 17:52:49,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 249 states have (on average 1.7630522088353413) internal successors, (439), 303 states have internal predecessors, (439), 19 states have call successors, (19), 7 states have call predecessors, (19), 16 states have return successors, (65), 16 states have call predecessors, (65), 19 states have call successors, (65) [2024-11-12 17:52:49,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 523 transitions. [2024-11-12 17:52:49,692 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 523 transitions. Word has length 27 [2024-11-12 17:52:49,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:52:49,693 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 523 transitions. [2024-11-12 17:52:49,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 17:52:49,693 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 523 transitions. [2024-11-12 17:52:49,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-12 17:52:49,694 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:52:49,694 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:52:49,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-12 17:52:49,694 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_0_to_51_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-12 17:52:49,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:52:49,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1853091565, now seen corresponding path program 1 times [2024-11-12 17:52:49,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:52:49,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510697727] [2024-11-12 17:52:49,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:49,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:52:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:49,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-12 17:52:49,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:49,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:52:49,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:52:49,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510697727] [2024-11-12 17:52:49,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510697727] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:52:49,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:52:49,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 17:52:49,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488299937] [2024-11-12 17:52:49,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:52:49,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 17:52:49,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:52:49,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 17:52:49,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-12 17:52:49,925 INFO L87 Difference]: Start difference. First operand 326 states and 523 transitions. Second operand has 7 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 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) [2024-11-12 17:52:50,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:52:50,084 INFO L93 Difference]: Finished difference Result 368 states and 551 transitions. [2024-11-12 17:52:50,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 17:52:50,085 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 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 27 [2024-11-12 17:52:50,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:52:50,087 INFO L225 Difference]: With dead ends: 368 [2024-11-12 17:52:50,087 INFO L226 Difference]: Without dead ends: 367 [2024-11-12 17:52:50,088 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-12 17:52:50,088 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 119 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 17:52:50,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 596 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 17:52:50,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-11-12 17:52:50,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 326. [2024-11-12 17:52:50,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 249 states have (on average 1.751004016064257) internal successors, (436), 303 states have internal predecessors, (436), 19 states have call successors, (19), 7 states have call predecessors, (19), 16 states have return successors, (65), 16 states have call predecessors, (65), 19 states have call successors, (65) [2024-11-12 17:52:50,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 520 transitions. [2024-11-12 17:52:50,119 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 520 transitions. Word has length 27 [2024-11-12 17:52:50,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:52:50,120 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 520 transitions. [2024-11-12 17:52:50,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 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) [2024-11-12 17:52:50,120 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 520 transitions. [2024-11-12 17:52:50,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-12 17:52:50,122 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:52:50,123 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:52:50,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-12 17:52:50,123 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-12 17:52:50,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:52:50,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1912384370, now seen corresponding path program 1 times [2024-11-12 17:52:50,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:52:50,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4707085] [2024-11-12 17:52:50,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:50,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:52:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:52:50,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1610765645] [2024-11-12 17:52:50,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:50,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:52:50,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:52:50,146 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 17:52:50,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 17:52:50,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:50,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-12 17:52:50,260 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:52:50,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-12 17:52:50,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-12 17:52:50,598 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-12 17:52:50,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2024-11-12 17:52:50,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:52:50,619 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 17:52:50,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:52:50,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4707085] [2024-11-12 17:52:50,620 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:52:50,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610765645] [2024-11-12 17:52:50,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610765645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:52:50,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:52:50,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-12 17:52:50,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11266260] [2024-11-12 17:52:50,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:52:50,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-12 17:52:50,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:52:50,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-12 17:52:50,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-12 17:52:50,622 INFO L87 Difference]: Start difference. First operand 326 states and 520 transitions. Second operand has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 17:52:54,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:52:55,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:52:55,051 INFO L93 Difference]: Finished difference Result 668 states and 1165 transitions. [2024-11-12 17:52:55,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 17:52:55,051 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2024-11-12 17:52:55,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:52:55,054 INFO L225 Difference]: With dead ends: 668 [2024-11-12 17:52:55,054 INFO L226 Difference]: Without dead ends: 362 [2024-11-12 17:52:55,057 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2024-11-12 17:52:55,057 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 156 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-12 17:52:55,058 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 823 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 344 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-11-12 17:52:55,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2024-11-12 17:52:55,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 352. [2024-11-12 17:52:55,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 263 states have (on average 1.6996197718631179) internal successors, (447), 321 states have internal predecessors, (447), 22 states have call successors, (22), 7 states have call predecessors, (22), 25 states have return successors, (116), 24 states have call predecessors, (116), 22 states have call successors, (116) [2024-11-12 17:52:55,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 585 transitions. [2024-11-12 17:52:55,098 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 585 transitions. Word has length 27 [2024-11-12 17:52:55,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:52:55,100 INFO L471 AbstractCegarLoop]: Abstraction has 352 states and 585 transitions. [2024-11-12 17:52:55,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 17:52:55,100 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 585 transitions. [2024-11-12 17:52:55,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-12 17:52:55,101 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:52:55,101 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:52:55,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-12 17:52:55,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:52:55,302 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_0_to_51_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-12 17:52:55,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:52:55,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1611695867, now seen corresponding path program 1 times [2024-11-12 17:52:55,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:52:55,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236258138] [2024-11-12 17:52:55,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:55,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:52:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:55,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-12 17:52:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:55,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:52:55,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:52:55,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236258138] [2024-11-12 17:52:55,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236258138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:52:55,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:52:55,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 17:52:55,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456658358] [2024-11-12 17:52:55,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:52:55,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 17:52:55,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:52:55,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 17:52:55,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-12 17:52:55,509 INFO L87 Difference]: Start difference. First operand 352 states and 585 transitions. Second operand has 7 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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) [2024-11-12 17:52:55,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:52:55,688 INFO L93 Difference]: Finished difference Result 387 states and 608 transitions. [2024-11-12 17:52:55,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 17:52:55,689 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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 28 [2024-11-12 17:52:55,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:52:55,691 INFO L225 Difference]: With dead ends: 387 [2024-11-12 17:52:55,691 INFO L226 Difference]: Without dead ends: 386 [2024-11-12 17:52:55,692 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-12 17:52:55,692 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 97 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 17:52:55,693 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 618 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 17:52:55,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2024-11-12 17:52:55,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 353. [2024-11-12 17:52:55,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 264 states have (on average 1.6931818181818181) internal successors, (447), 322 states have internal predecessors, (447), 22 states have call successors, (22), 7 states have call predecessors, (22), 25 states have return successors, (116), 24 states have call predecessors, (116), 22 states have call successors, (116) [2024-11-12 17:52:55,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 585 transitions. [2024-11-12 17:52:55,718 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 585 transitions. Word has length 28 [2024-11-12 17:52:55,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:52:55,718 INFO L471 AbstractCegarLoop]: Abstraction has 353 states and 585 transitions. [2024-11-12 17:52:55,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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) [2024-11-12 17:52:55,719 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 585 transitions. [2024-11-12 17:52:55,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-12 17:52:55,719 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:52:55,719 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:52:55,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-12 17:52:55,720 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_0_to_51_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-12 17:52:55,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:52:55,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1611263770, now seen corresponding path program 1 times [2024-11-12 17:52:55,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:52:55,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889087454] [2024-11-12 17:52:55,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:55,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:52:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:55,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-12 17:52:55,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:55,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:52:55,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:52:55,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889087454] [2024-11-12 17:52:55,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889087454] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:52:55,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:52:55,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 17:52:55,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329026138] [2024-11-12 17:52:55,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:52:55,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 17:52:55,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:52:55,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 17:52:55,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-12 17:52:55,964 INFO L87 Difference]: Start difference. First operand 353 states and 585 transitions. Second operand has 7 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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) [2024-11-12 17:52:56,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:52:56,132 INFO L93 Difference]: Finished difference Result 486 states and 785 transitions. [2024-11-12 17:52:56,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 17:52:56,133 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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 28 [2024-11-12 17:52:56,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:52:56,136 INFO L225 Difference]: With dead ends: 486 [2024-11-12 17:52:56,136 INFO L226 Difference]: Without dead ends: 481 [2024-11-12 17:52:56,136 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-12 17:52:56,137 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 127 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 17:52:56,137 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 583 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 17:52:56,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2024-11-12 17:52:56,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 426. [2024-11-12 17:52:56,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 326 states have (on average 1.6932515337423313) internal successors, (552), 388 states have internal predecessors, (552), 27 states have call successors, (27), 9 states have call predecessors, (27), 31 states have return successors, (146), 29 states have call predecessors, (146), 27 states have call successors, (146) [2024-11-12 17:52:56,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 725 transitions. [2024-11-12 17:52:56,165 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 725 transitions. Word has length 28 [2024-11-12 17:52:56,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:52:56,166 INFO L471 AbstractCegarLoop]: Abstraction has 426 states and 725 transitions. [2024-11-12 17:52:56,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 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) [2024-11-12 17:52:56,166 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 725 transitions. [2024-11-12 17:52:56,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-12 17:52:56,167 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:52:56,167 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:52:56,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-12 17:52:56,167 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-12 17:52:56,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:52:56,167 INFO L85 PathProgramCache]: Analyzing trace with hash -845626629, now seen corresponding path program 1 times [2024-11-12 17:52:56,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:52:56,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842948508] [2024-11-12 17:52:56,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:56,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:52:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:52:56,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2102743714] [2024-11-12 17:52:56,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:56,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:52:56,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:52:56,187 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 17:52:56,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 17:52:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:56,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-12 17:52:56,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:52:56,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-12 17:52:56,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-12 17:52:56,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:52:56,459 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 17:52:56,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:52:56,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842948508] [2024-11-12 17:52:56,459 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:52:56,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102743714] [2024-11-12 17:52:56,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102743714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:52:56,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:52:56,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 17:52:56,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903184426] [2024-11-12 17:52:56,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:52:56,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 17:52:56,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:52:56,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 17:52:56,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-12 17:52:56,461 INFO L87 Difference]: Start difference. First operand 426 states and 725 transitions. Second operand has 9 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 17:52:56,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:52:56,678 INFO L93 Difference]: Finished difference Result 437 states and 754 transitions. [2024-11-12 17:52:56,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 17:52:56,678 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2024-11-12 17:52:56,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:52:56,681 INFO L225 Difference]: With dead ends: 437 [2024-11-12 17:52:56,681 INFO L226 Difference]: Without dead ends: 436 [2024-11-12 17:52:56,681 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-12 17:52:56,682 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 99 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 17:52:56,682 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 500 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 17:52:56,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2024-11-12 17:52:56,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 427. [2024-11-12 17:52:56,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 327 states have (on average 1.691131498470948) internal successors, (553), 389 states have internal predecessors, (553), 27 states have call successors, (27), 9 states have call predecessors, (27), 31 states have return successors, (146), 29 states have call predecessors, (146), 27 states have call successors, (146) [2024-11-12 17:52:56,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 726 transitions. [2024-11-12 17:52:56,712 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 726 transitions. Word has length 28 [2024-11-12 17:52:56,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:52:56,712 INFO L471 AbstractCegarLoop]: Abstraction has 427 states and 726 transitions. [2024-11-12 17:52:56,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-12 17:52:56,712 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 726 transitions. [2024-11-12 17:52:56,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-12 17:52:56,713 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:52:56,713 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:52:56,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-12 17:52:56,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-12 17:52:56,914 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_0_to_51_0Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-12 17:52:56,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:52:56,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1577035551, now seen corresponding path program 1 times [2024-11-12 17:52:56,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:52:56,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817469256] [2024-11-12 17:52:56,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:56,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:52:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:57,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-12 17:52:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:57,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:52:57,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:52:57,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817469256] [2024-11-12 17:52:57,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817469256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:52:57,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:52:57,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 17:52:57,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383762016] [2024-11-12 17:52:57,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:52:57,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 17:52:57,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:52:57,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 17:52:57,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-12 17:52:57,113 INFO L87 Difference]: Start difference. First operand 427 states and 726 transitions. Second operand has 7 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 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) [2024-11-12 17:52:57,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:52:57,288 INFO L93 Difference]: Finished difference Result 516 states and 843 transitions. [2024-11-12 17:52:57,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 17:52:57,289 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 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 29 [2024-11-12 17:52:57,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:52:57,291 INFO L225 Difference]: With dead ends: 516 [2024-11-12 17:52:57,291 INFO L226 Difference]: Without dead ends: 515 [2024-11-12 17:52:57,292 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-12 17:52:57,293 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 115 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 17:52:57,293 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 605 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 17:52:57,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-11-12 17:52:57,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 474. [2024-11-12 17:52:57,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 365 states have (on average 1.6849315068493151) internal successors, (615), 430 states have internal predecessors, (615), 30 states have call successors, (30), 10 states have call predecessors, (30), 37 states have return successors, (169), 34 states have call predecessors, (169), 30 states have call successors, (169) [2024-11-12 17:52:57,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 814 transitions. [2024-11-12 17:52:57,330 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 814 transitions. Word has length 29 [2024-11-12 17:52:57,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:52:57,331 INFO L471 AbstractCegarLoop]: Abstraction has 474 states and 814 transitions. [2024-11-12 17:52:57,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 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) [2024-11-12 17:52:57,331 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 814 transitions. [2024-11-12 17:52:57,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-12 17:52:57,332 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:52:57,332 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:52:57,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-12 17:52:57,332 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_0_to_51_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-12 17:52:57,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:52:57,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1590430577, now seen corresponding path program 1 times [2024-11-12 17:52:57,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:52:57,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747925025] [2024-11-12 17:52:57,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:57,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:52:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:57,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-12 17:52:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:57,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:52:57,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:52:57,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747925025] [2024-11-12 17:52:57,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747925025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:52:57,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:52:57,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 17:52:57,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629152499] [2024-11-12 17:52:57,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:52:57,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 17:52:57,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:52:57,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 17:52:57,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-12 17:52:57,584 INFO L87 Difference]: Start difference. First operand 474 states and 814 transitions. Second operand has 7 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 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) [2024-11-12 17:52:57,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:52:57,748 INFO L93 Difference]: Finished difference Result 528 states and 864 transitions. [2024-11-12 17:52:57,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 17:52:57,749 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 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 29 [2024-11-12 17:52:57,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:52:57,751 INFO L225 Difference]: With dead ends: 528 [2024-11-12 17:52:57,752 INFO L226 Difference]: Without dead ends: 527 [2024-11-12 17:52:57,752 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-12 17:52:57,753 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 123 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 17:52:57,753 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 586 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 17:52:57,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2024-11-12 17:52:57,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 474. [2024-11-12 17:52:57,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 365 states have (on average 1.6767123287671233) internal successors, (612), 430 states have internal predecessors, (612), 30 states have call successors, (30), 10 states have call predecessors, (30), 37 states have return successors, (169), 34 states have call predecessors, (169), 30 states have call successors, (169) [2024-11-12 17:52:57,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 811 transitions. [2024-11-12 17:52:57,796 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 811 transitions. Word has length 29 [2024-11-12 17:52:57,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:52:57,796 INFO L471 AbstractCegarLoop]: Abstraction has 474 states and 811 transitions. [2024-11-12 17:52:57,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 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) [2024-11-12 17:52:57,796 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 811 transitions. [2024-11-12 17:52:57,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-12 17:52:57,796 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:52:57,797 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:52:57,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-12 17:52:57,797 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_0_to_51_0Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-12 17:52:57,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:52:57,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1643029602, now seen corresponding path program 1 times [2024-11-12 17:52:57,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:52:57,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22327623] [2024-11-12 17:52:57,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:57,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:52:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:58,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-12 17:52:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:58,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:52:58,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:52:58,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22327623] [2024-11-12 17:52:58,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22327623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:52:58,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:52:58,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 17:52:58,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227840719] [2024-11-12 17:52:58,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:52:58,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 17:52:58,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:52:58,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 17:52:58,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-12 17:52:58,016 INFO L87 Difference]: Start difference. First operand 474 states and 811 transitions. Second operand has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 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) [2024-11-12 17:52:58,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:52:58,192 INFO L93 Difference]: Finished difference Result 515 states and 843 transitions. [2024-11-12 17:52:58,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 17:52:58,193 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 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 30 [2024-11-12 17:52:58,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:52:58,195 INFO L225 Difference]: With dead ends: 515 [2024-11-12 17:52:58,195 INFO L226 Difference]: Without dead ends: 514 [2024-11-12 17:52:58,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-12 17:52:58,197 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 108 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 17:52:58,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 625 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 17:52:58,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2024-11-12 17:52:58,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 477. [2024-11-12 17:52:58,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 368 states have (on average 1.673913043478261) internal successors, (616), 433 states have internal predecessors, (616), 30 states have call successors, (30), 10 states have call predecessors, (30), 37 states have return successors, (169), 34 states have call predecessors, (169), 30 states have call successors, (169) [2024-11-12 17:52:58,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 815 transitions. [2024-11-12 17:52:58,246 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 815 transitions. Word has length 30 [2024-11-12 17:52:58,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:52:58,247 INFO L471 AbstractCegarLoop]: Abstraction has 477 states and 815 transitions. [2024-11-12 17:52:58,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 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) [2024-11-12 17:52:58,247 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 815 transitions. [2024-11-12 17:52:58,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-12 17:52:58,248 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:52:58,248 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:52:58,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-12 17:52:58,248 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting func_to_recursive_line_0_to_51_0Err26ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-12 17:52:58,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:52:58,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1643029154, now seen corresponding path program 1 times [2024-11-12 17:52:58,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:52:58,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813628813] [2024-11-12 17:52:58,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:58,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:52:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:58,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-12 17:52:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:58,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:52:58,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:52:58,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813628813] [2024-11-12 17:52:58,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813628813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:52:58,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:52:58,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 17:52:58,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953605418] [2024-11-12 17:52:58,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:52:58,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 17:52:58,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:52:58,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 17:52:58,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-12 17:52:58,471 INFO L87 Difference]: Start difference. First operand 477 states and 815 transitions. Second operand has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 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) [2024-11-12 17:52:58,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:52:58,634 INFO L93 Difference]: Finished difference Result 508 states and 834 transitions. [2024-11-12 17:52:58,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 17:52:58,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 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 30 [2024-11-12 17:52:58,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:52:58,637 INFO L225 Difference]: With dead ends: 508 [2024-11-12 17:52:58,637 INFO L226 Difference]: Without dead ends: 507 [2024-11-12 17:52:58,638 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-12 17:52:58,638 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 90 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 17:52:58,638 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 613 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 17:52:58,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2024-11-12 17:52:58,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 478. [2024-11-12 17:52:58,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 369 states have (on average 1.6693766937669376) internal successors, (616), 434 states have internal predecessors, (616), 30 states have call successors, (30), 10 states have call predecessors, (30), 37 states have return successors, (169), 34 states have call predecessors, (169), 30 states have call successors, (169) [2024-11-12 17:52:58,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 815 transitions. [2024-11-12 17:52:58,671 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 815 transitions. Word has length 30 [2024-11-12 17:52:58,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:52:58,671 INFO L471 AbstractCegarLoop]: Abstraction has 478 states and 815 transitions. [2024-11-12 17:52:58,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 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) [2024-11-12 17:52:58,671 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 815 transitions. [2024-11-12 17:52:58,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-12 17:52:58,672 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:52:58,672 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:52:58,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-12 17:52:58,672 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting func_to_recursive_line_0_to_51_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-12 17:52:58,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:52:58,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1643461699, now seen corresponding path program 1 times [2024-11-12 17:52:58,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:52:58,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709714315] [2024-11-12 17:52:58,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:58,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:52:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:58,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-12 17:52:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:58,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:52:58,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:52:58,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709714315] [2024-11-12 17:52:58,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709714315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:52:58,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:52:58,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 17:52:58,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135695597] [2024-11-12 17:52:58,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:52:58,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 17:52:58,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:52:58,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 17:52:58,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-12 17:52:58,974 INFO L87 Difference]: Start difference. First operand 478 states and 815 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-12 17:52:59,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:52:59,070 INFO L93 Difference]: Finished difference Result 1005 states and 1932 transitions. [2024-11-12 17:52:59,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 17:52:59,071 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (2), 1 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 30 [2024-11-12 17:52:59,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:52:59,074 INFO L225 Difference]: With dead ends: 1005 [2024-11-12 17:52:59,074 INFO L226 Difference]: Without dead ends: 586 [2024-11-12 17:52:59,077 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-12 17:52:59,078 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 54 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 17:52:59,078 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 318 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 17:52:59,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2024-11-12 17:52:59,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 501. [2024-11-12 17:52:59,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 392 states have (on average 1.653061224489796) internal successors, (648), 457 states have internal predecessors, (648), 30 states have call successors, (30), 10 states have call predecessors, (30), 37 states have return successors, (169), 34 states have call predecessors, (169), 30 states have call successors, (169) [2024-11-12 17:52:59,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 847 transitions. [2024-11-12 17:52:59,115 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 847 transitions. Word has length 30 [2024-11-12 17:52:59,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:52:59,115 INFO L471 AbstractCegarLoop]: Abstraction has 501 states and 847 transitions. [2024-11-12 17:52:59,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-12 17:52:59,115 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 847 transitions. [2024-11-12 17:52:59,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-12 17:52:59,115 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:52:59,116 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:52:59,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-12 17:52:59,116 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_0_to_51_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-12 17:52:59,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:52:59,117 INFO L85 PathProgramCache]: Analyzing trace with hash -2058707524, now seen corresponding path program 1 times [2024-11-12 17:52:59,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:52:59,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226545392] [2024-11-12 17:52:59,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:59,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:52:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:59,267 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-12 17:52:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:59,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:52:59,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:52:59,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226545392] [2024-11-12 17:52:59,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226545392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:52:59,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:52:59,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 17:52:59,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142113779] [2024-11-12 17:52:59,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:52:59,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 17:52:59,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:52:59,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 17:52:59,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-12 17:52:59,272 INFO L87 Difference]: Start difference. First operand 501 states and 847 transitions. Second operand has 6 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 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) [2024-11-12 17:52:59,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:52:59,384 INFO L93 Difference]: Finished difference Result 571 states and 894 transitions. [2024-11-12 17:52:59,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 17:52:59,385 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 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 30 [2024-11-12 17:52:59,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:52:59,387 INFO L225 Difference]: With dead ends: 571 [2024-11-12 17:52:59,387 INFO L226 Difference]: Without dead ends: 569 [2024-11-12 17:52:59,388 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-12 17:52:59,390 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 175 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 17:52:59,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 554 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 17:52:59,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2024-11-12 17:52:59,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 519. [2024-11-12 17:52:59,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 410 states have (on average 1.6390243902439023) internal successors, (672), 475 states have internal predecessors, (672), 30 states have call successors, (30), 10 states have call predecessors, (30), 37 states have return successors, (169), 34 states have call predecessors, (169), 30 states have call successors, (169) [2024-11-12 17:52:59,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 871 transitions. [2024-11-12 17:52:59,429 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 871 transitions. Word has length 30 [2024-11-12 17:52:59,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:52:59,430 INFO L471 AbstractCegarLoop]: Abstraction has 519 states and 871 transitions. [2024-11-12 17:52:59,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 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) [2024-11-12 17:52:59,432 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 871 transitions. [2024-11-12 17:52:59,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-12 17:52:59,433 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:52:59,433 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:52:59,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-12 17:52:59,433 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_0_to_51_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-12 17:52:59,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:52:59,434 INFO L85 PathProgramCache]: Analyzing trace with hash 131545663, now seen corresponding path program 1 times [2024-11-12 17:52:59,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:52:59,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467024412] [2024-11-12 17:52:59,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:59,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:52:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:52:59,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [156157884] [2024-11-12 17:52:59,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:52:59,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:52:59,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:52:59,476 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 17:52:59,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-12 17:52:59,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:52:59,610 INFO L256 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-12 17:52:59,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:52:59,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:52:59,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-12 17:52:59,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:52:59,807 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 [2024-11-12 17:52:59,812 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 [2024-11-12 17:52:59,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:52:59,823 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 17:52:59,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:52:59,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467024412] [2024-11-12 17:52:59,824 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:52:59,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156157884] [2024-11-12 17:52:59,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156157884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:52:59,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:52:59,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 17:52:59,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74839682] [2024-11-12 17:52:59,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:52:59,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-12 17:52:59,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:52:59,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-12 17:52:59,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-12 17:52:59,825 INFO L87 Difference]: Start difference. First operand 519 states and 871 transitions. Second operand has 9 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 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) [2024-11-12 17:53:03,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:53:07,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:53:11,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:53:16,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:53:20,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:53:24,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:53:28,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:53:32,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:53:36,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:53:40,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:53:40,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:53:40,151 INFO L93 Difference]: Finished difference Result 571 states and 910 transitions. [2024-11-12 17:53:40,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-12 17:53:40,151 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 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 30 [2024-11-12 17:53:40,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:53:40,154 INFO L225 Difference]: With dead ends: 571 [2024-11-12 17:53:40,155 INFO L226 Difference]: Without dead ends: 570 [2024-11-12 17:53:40,155 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-12 17:53:40,156 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 169 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 12 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.2s IncrementalHoareTripleChecker+Time [2024-11-12 17:53:40,156 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 572 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 197 Invalid, 10 Unknown, 0 Unchecked, 40.2s Time] [2024-11-12 17:53:40,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2024-11-12 17:53:40,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 532. [2024-11-12 17:53:40,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 420 states have (on average 1.6238095238095238) internal successors, (682), 484 states have internal predecessors, (682), 31 states have call successors, (31), 11 states have call predecessors, (31), 39 states have return successors, (170), 37 states have call predecessors, (170), 31 states have call successors, (170) [2024-11-12 17:53:40,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 883 transitions. [2024-11-12 17:53:40,198 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 883 transitions. Word has length 30 [2024-11-12 17:53:40,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:53:40,199 INFO L471 AbstractCegarLoop]: Abstraction has 532 states and 883 transitions. [2024-11-12 17:53:40,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 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) [2024-11-12 17:53:40,199 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 883 transitions. [2024-11-12 17:53:40,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-12 17:53:40,199 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:53:40,199 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:53:40,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-12 17:53:40,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:53:40,400 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting func_to_recursive_line_0_to_51_0Err21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-12 17:53:40,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:53:40,400 INFO L85 PathProgramCache]: Analyzing trace with hash 662948339, now seen corresponding path program 1 times [2024-11-12 17:53:40,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:53:40,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146981827] [2024-11-12 17:53:40,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:40,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:53:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:40,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-12 17:53:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:40,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:53:40,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:53:40,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146981827] [2024-11-12 17:53:40,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146981827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:53:40,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:53:40,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 17:53:40,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113511579] [2024-11-12 17:53:40,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:53:40,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 17:53:40,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:53:40,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 17:53:40,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-12 17:53:40,599 INFO L87 Difference]: Start difference. First operand 532 states and 883 transitions. Second operand has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (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) [2024-11-12 17:53:40,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:53:40,771 INFO L93 Difference]: Finished difference Result 578 states and 914 transitions. [2024-11-12 17:53:40,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 17:53:40,771 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (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 31 [2024-11-12 17:53:40,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:53:40,774 INFO L225 Difference]: With dead ends: 578 [2024-11-12 17:53:40,774 INFO L226 Difference]: Without dead ends: 577 [2024-11-12 17:53:40,774 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-12 17:53:40,775 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 127 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 17:53:40,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 636 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 17:53:40,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2024-11-12 17:53:40,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 532. [2024-11-12 17:53:40,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 420 states have (on average 1.6166666666666667) internal successors, (679), 484 states have internal predecessors, (679), 31 states have call successors, (31), 11 states have call predecessors, (31), 39 states have return successors, (170), 37 states have call predecessors, (170), 31 states have call successors, (170) [2024-11-12 17:53:40,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 880 transitions. [2024-11-12 17:53:40,808 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 880 transitions. Word has length 31 [2024-11-12 17:53:40,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:53:40,808 INFO L471 AbstractCegarLoop]: Abstraction has 532 states and 880 transitions. [2024-11-12 17:53:40,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (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) [2024-11-12 17:53:40,809 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 880 transitions. [2024-11-12 17:53:40,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-12 17:53:40,810 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:53:40,810 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:53:40,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-12 17:53:40,810 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting func_to_recursive_line_0_to_51_0Err27ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-12 17:53:40,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:53:40,810 INFO L85 PathProgramCache]: Analyzing trace with hash 662962241, now seen corresponding path program 1 times [2024-11-12 17:53:40,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:53:40,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797397659] [2024-11-12 17:53:40,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:40,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:53:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:40,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-12 17:53:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:41,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:53:41,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:53:41,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797397659] [2024-11-12 17:53:41,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797397659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:53:41,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:53:41,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 17:53:41,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234794011] [2024-11-12 17:53:41,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:53:41,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 17:53:41,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:53:41,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 17:53:41,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-12 17:53:41,005 INFO L87 Difference]: Start difference. First operand 532 states and 880 transitions. Second operand has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (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) [2024-11-12 17:53:41,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:53:41,197 INFO L93 Difference]: Finished difference Result 626 states and 1001 transitions. [2024-11-12 17:53:41,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 17:53:41,198 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (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 31 [2024-11-12 17:53:41,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:53:41,201 INFO L225 Difference]: With dead ends: 626 [2024-11-12 17:53:41,201 INFO L226 Difference]: Without dead ends: 625 [2024-11-12 17:53:41,202 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-12 17:53:41,202 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 137 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 17:53:41,202 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 642 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 17:53:41,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2024-11-12 17:53:41,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 586. [2024-11-12 17:53:41,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 466 states have (on average 1.6244635193133048) internal successors, (757), 533 states have internal predecessors, (757), 34 states have call successors, (34), 12 states have call predecessors, (34), 44 states have return successors, (192), 41 states have call predecessors, (192), 34 states have call successors, (192) [2024-11-12 17:53:41,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 983 transitions. [2024-11-12 17:53:41,239 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 983 transitions. Word has length 31 [2024-11-12 17:53:41,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:53:41,240 INFO L471 AbstractCegarLoop]: Abstraction has 586 states and 983 transitions. [2024-11-12 17:53:41,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (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) [2024-11-12 17:53:41,240 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 983 transitions. [2024-11-12 17:53:41,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-12 17:53:41,240 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:53:41,240 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:53:41,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-12 17:53:41,241 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting func_to_recursive_line_0_to_51_0Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-12 17:53:41,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:53:41,241 INFO L85 PathProgramCache]: Analyzing trace with hash -217051615, now seen corresponding path program 1 times [2024-11-12 17:53:41,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:53:41,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555942209] [2024-11-12 17:53:41,241 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:41,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:53:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:53:41,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [186911907] [2024-11-12 17:53:41,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:41,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:53:41,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:53:41,271 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 17:53:41,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-12 17:53:41,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:41,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-12 17:53:41,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:53:41,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:53:41,441 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 [2024-11-12 17:53:41,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-12 17:53:41,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:53:41,620 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 [2024-11-12 17:53:41,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:53:41,638 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 17:53:41,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:53:41,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555942209] [2024-11-12 17:53:41,639 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:53:41,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186911907] [2024-11-12 17:53:41,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186911907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:53:41,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:53:41,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 17:53:41,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879926292] [2024-11-12 17:53:41,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:53:41,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 17:53:41,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:53:41,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 17:53:41,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-12 17:53:41,641 INFO L87 Difference]: Start difference. First operand 586 states and 983 transitions. Second operand has 8 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 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) [2024-11-12 17:53:45,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:53:49,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:53:53,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:53:53,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:53:53,926 INFO L93 Difference]: Finished difference Result 623 states and 1007 transitions. [2024-11-12 17:53:53,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 17:53:53,927 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 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 31 [2024-11-12 17:53:53,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:53:53,930 INFO L225 Difference]: With dead ends: 623 [2024-11-12 17:53:53,930 INFO L226 Difference]: Without dead ends: 622 [2024-11-12 17:53:53,931 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-12 17:53:53,931 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 119 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2024-11-12 17:53:53,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 619 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 175 Invalid, 3 Unknown, 0 Unchecked, 12.2s Time] [2024-11-12 17:53:53,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2024-11-12 17:53:53,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 586. [2024-11-12 17:53:53,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 466 states have (on average 1.6201716738197425) internal successors, (755), 533 states have internal predecessors, (755), 34 states have call successors, (34), 12 states have call predecessors, (34), 44 states have return successors, (192), 41 states have call predecessors, (192), 34 states have call successors, (192) [2024-11-12 17:53:53,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 981 transitions. [2024-11-12 17:53:53,972 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 981 transitions. Word has length 31 [2024-11-12 17:53:53,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:53:53,973 INFO L471 AbstractCegarLoop]: Abstraction has 586 states and 981 transitions. [2024-11-12 17:53:53,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 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) [2024-11-12 17:53:53,973 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 981 transitions. [2024-11-12 17:53:53,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-12 17:53:53,973 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:53:53,974 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:53:53,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-12 17:53:54,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-12 17:53:54,178 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting func_to_recursive_line_0_to_51_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-12 17:53:54,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:53:54,178 INFO L85 PathProgramCache]: Analyzing trace with hash -923437822, now seen corresponding path program 1 times [2024-11-12 17:53:54,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:53:54,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91591118] [2024-11-12 17:53:54,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:54,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:53:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:53:54,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [431970075] [2024-11-12 17:53:54,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:53:54,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:53:54,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:53:54,220 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 17:53:54,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-12 17:53:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:53:54,376 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-12 17:53:54,381 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:53:54,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:53:54,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2024-11-12 17:53:54,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:53:54,409 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 [2024-11-12 17:53:54,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-12 17:53:54,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:53:54,662 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 17:53:54,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:53:54,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91591118] [2024-11-12 17:53:54,662 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:53:54,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431970075] [2024-11-12 17:53:54,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431970075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:53:54,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:53:54,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-12 17:53:54,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194265216] [2024-11-12 17:53:54,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:53:54,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 17:53:54,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:53:54,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 17:53:54,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-12 17:53:54,664 INFO L87 Difference]: Start difference. First operand 586 states and 981 transitions. Second operand has 10 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 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) [2024-11-12 17:53:58,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:54:02,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:54:06,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 17:54:07,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:54:07,055 INFO L93 Difference]: Finished difference Result 631 states and 1013 transitions. [2024-11-12 17:54:07,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-12 17:54:07,055 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 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 32 [2024-11-12 17:54:07,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:54:07,058 INFO L225 Difference]: With dead ends: 631 [2024-11-12 17:54:07,058 INFO L226 Difference]: Without dead ends: 630 [2024-11-12 17:54:07,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2024-11-12 17:54:07,059 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 116 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 14 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2024-11-12 17:54:07,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 657 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 244 Invalid, 3 Unknown, 0 Unchecked, 12.3s Time] [2024-11-12 17:54:07,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2024-11-12 17:54:07,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 597. [2024-11-12 17:54:07,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 474 states have (on average 1.609704641350211) internal successors, (763), 542 states have internal predecessors, (763), 36 states have call successors, (36), 14 states have call predecessors, (36), 45 states have return successors, (189), 43 states have call predecessors, (189), 36 states have call successors, (189) [2024-11-12 17:54:07,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 988 transitions. [2024-11-12 17:54:07,099 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 988 transitions. Word has length 32 [2024-11-12 17:54:07,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:54:07,099 INFO L471 AbstractCegarLoop]: Abstraction has 597 states and 988 transitions. [2024-11-12 17:54:07,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 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) [2024-11-12 17:54:07,099 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 988 transitions. [2024-11-12 17:54:07,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-12 17:54:07,100 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:54:07,100 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:54:07,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-12 17:54:07,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-12 17:54:07,304 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting func_to_recursive_line_0_to_51_0Err28ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-12 17:54:07,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:54:07,305 INFO L85 PathProgramCache]: Analyzing trace with hash -923006846, now seen corresponding path program 1 times [2024-11-12 17:54:07,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:54:07,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448126726] [2024-11-12 17:54:07,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:54:07,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:54:07,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:54:07,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-12 17:54:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:54:07,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:54:07,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:54:07,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448126726] [2024-11-12 17:54:07,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448126726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:54:07,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:54:07,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 17:54:07,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311358412] [2024-11-12 17:54:07,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:54:07,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 17:54:07,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:54:07,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 17:54:07,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-12 17:54:07,522 INFO L87 Difference]: Start difference. First operand 597 states and 988 transitions. Second operand has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (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) [2024-11-12 17:54:07,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:54:07,721 INFO L93 Difference]: Finished difference Result 625 states and 1006 transitions. [2024-11-12 17:54:07,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 17:54:07,722 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (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 32 [2024-11-12 17:54:07,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:54:07,725 INFO L225 Difference]: With dead ends: 625 [2024-11-12 17:54:07,725 INFO L226 Difference]: Without dead ends: 624 [2024-11-12 17:54:07,725 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-12 17:54:07,726 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 98 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 17:54:07,726 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 625 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 17:54:07,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2024-11-12 17:54:07,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 600. [2024-11-12 17:54:07,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 477 states have (on average 1.6079664570230607) internal successors, (767), 545 states have internal predecessors, (767), 36 states have call successors, (36), 14 states have call predecessors, (36), 45 states have return successors, (189), 43 states have call predecessors, (189), 36 states have call successors, (189) [2024-11-12 17:54:07,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 992 transitions. [2024-11-12 17:54:07,767 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 992 transitions. Word has length 32 [2024-11-12 17:54:07,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:54:07,768 INFO L471 AbstractCegarLoop]: Abstraction has 600 states and 992 transitions. [2024-11-12 17:54:07,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (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) [2024-11-12 17:54:07,768 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 992 transitions. [2024-11-12 17:54:07,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-12 17:54:07,768 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:54:07,769 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:54:07,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-12 17:54:07,769 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting func_to_recursive_line_0_to_51_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-12 17:54:07,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:54:07,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1861334657, now seen corresponding path program 1 times [2024-11-12 17:54:07,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:54:07,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421894977] [2024-11-12 17:54:07,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:54:07,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:54:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:54:07,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-12 17:54:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:54:07,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:54:07,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:54:07,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421894977] [2024-11-12 17:54:07,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421894977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:54:07,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:54:07,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 17:54:07,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453304863] [2024-11-12 17:54:07,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:54:07,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 17:54:07,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:54:07,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 17:54:07,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-12 17:54:07,924 INFO L87 Difference]: Start difference. First operand 600 states and 992 transitions. Second operand has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (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) [2024-11-12 17:54:08,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 17:54:08,252 INFO L93 Difference]: Finished difference Result 662 states and 1048 transitions. [2024-11-12 17:54:08,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 17:54:08,252 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (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 32 [2024-11-12 17:54:08,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 17:54:08,255 INFO L225 Difference]: With dead ends: 662 [2024-11-12 17:54:08,255 INFO L226 Difference]: Without dead ends: 661 [2024-11-12 17:54:08,256 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-12 17:54:08,257 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 158 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 17:54:08,257 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 621 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 17:54:08,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2024-11-12 17:54:08,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 605. [2024-11-12 17:54:08,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 482 states have (on average 1.607883817427386) internal successors, (775), 550 states have internal predecessors, (775), 36 states have call successors, (36), 14 states have call predecessors, (36), 45 states have return successors, (189), 43 states have call predecessors, (189), 36 states have call successors, (189) [2024-11-12 17:54:08,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 1000 transitions. [2024-11-12 17:54:08,297 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 1000 transitions. Word has length 32 [2024-11-12 17:54:08,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 17:54:08,297 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 1000 transitions. [2024-11-12 17:54:08,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (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) [2024-11-12 17:54:08,298 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 1000 transitions. [2024-11-12 17:54:08,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-12 17:54:08,298 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 17:54:08,298 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 17:54:08,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-12 17:54:08,298 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting func_to_recursive_line_0_to_51_0Err23ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2024-11-12 17:54:08,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 17:54:08,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1438198741, now seen corresponding path program 1 times [2024-11-12 17:54:08,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 17:54:08,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201092637] [2024-11-12 17:54:08,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:54:08,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 17:54:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-12 17:54:08,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [378315004] [2024-11-12 17:54:08,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 17:54:08,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 17:54:08,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 17:54:08,329 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 17:54:08,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-12 17:54:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 17:54:08,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-12 17:54:08,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 17:54:08,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:54:08,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-12 17:54:08,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 17:54:08,516 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 [2024-11-12 17:54:08,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-12 17:54:08,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 17:54:08,731 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 17:54:08,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 17:54:08,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201092637] [2024-11-12 17:54:08,731 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-12 17:54:08,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378315004] [2024-11-12 17:54:08,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378315004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 17:54:08,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 17:54:08,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-12 17:54:08,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716494329] [2024-11-12 17:54:08,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 17:54:08,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 17:54:08,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 17:54:08,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 17:54:08,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-12 17:54:08,732 INFO L87 Difference]: Start difference. First operand 605 states and 1000 transitions. Second operand has 10 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 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)