./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_fermat2-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d 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_fermat2-ll.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9ae1eacd45e2434e505261d43bb17259916099964617682d271ef41fa1c24d0c --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 15:24:24,608 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 15:24:24,679 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 15:24:24,694 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 15:24:24,694 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 15:24:24,731 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 15:24:24,731 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 15:24:24,732 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 15:24:24,734 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 15:24:24,735 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 15:24:24,736 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 15:24:24,736 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 15:24:24,737 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 15:24:24,741 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 15:24:24,742 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 15:24:24,742 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 15:24:24,742 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 15:24:24,742 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 15:24:24,743 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 15:24:24,743 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 15:24:24,743 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 15:24:24,746 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 15:24:24,747 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 15:24:24,747 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 15:24:24,747 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 15:24:24,747 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 15:24:24,748 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 15:24:24,748 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 15:24:24,748 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 15:24:24,749 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 15:24:24,749 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 15:24:24,749 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 15:24:24,749 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 15:24:24,749 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 15:24:24,750 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 15:24:24,750 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 15:24:24,750 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 15:24:24,752 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 15:24:24,752 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 15:24:24,752 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 15:24:24,752 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 15:24:24,753 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 15:24:24,753 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ae1eacd45e2434e505261d43bb17259916099964617682d271ef41fa1c24d0c [2024-11-08 15:24:25,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 15:24:25,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 15:24:25,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 15:24:25,050 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 15:24:25,051 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 15:24:25,053 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_fermat2-ll.c [2024-11-08 15:24:26,606 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 15:24:26,792 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 15:24:26,793 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_fermat2-ll.c [2024-11-08 15:24:26,801 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c9ca2ff3/8a75110ad2484be8a4fc5d380e0a917d/FLAG6ba25aafa [2024-11-08 15:24:26,815 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c9ca2ff3/8a75110ad2484be8a4fc5d380e0a917d [2024-11-08 15:24:26,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 15:24:26,820 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 15:24:26,821 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 15:24:26,821 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 15:24:26,826 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 15:24:26,827 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 03:24:26" (1/1) ... [2024-11-08 15:24:26,828 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@303318d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:24:26, skipping insertion in model container [2024-11-08 15:24:26,828 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 03:24:26" (1/1) ... [2024-11-08 15:24:26,849 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 15:24:27,043 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_fermat2-ll.c[1060,1073] [2024-11-08 15:24:27,065 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 15:24:27,075 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 15:24:27,087 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_fermat2-ll.c[1060,1073] [2024-11-08 15:24:27,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 15:24:27,116 INFO L204 MainTranslator]: Completed translation [2024-11-08 15:24:27,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:24:27 WrapperNode [2024-11-08 15:24:27,117 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 15:24:27,118 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 15:24:27,118 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 15:24:27,118 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 15:24:27,125 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:24:27" (1/1) ... [2024-11-08 15:24:27,133 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:24:27" (1/1) ... [2024-11-08 15:24:27,152 INFO L138 Inliner]: procedures = 16, calls = 59, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2024-11-08 15:24:27,153 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 15:24:27,154 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 15:24:27,154 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 15:24:27,155 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 15:24:27,165 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:24:27" (1/1) ... [2024-11-08 15:24:27,165 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:24:27" (1/1) ... [2024-11-08 15:24:27,168 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:24:27" (1/1) ... [2024-11-08 15:24:27,187 INFO L175 MemorySlicer]: Split 36 memory accesses to 5 slices as follows [2, 8, 6, 10, 10]. 28 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 8 writes are split as follows [0, 3, 1, 2, 2]. [2024-11-08 15:24:27,188 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:24:27" (1/1) ... [2024-11-08 15:24:27,188 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:24:27" (1/1) ... [2024-11-08 15:24:27,194 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:24:27" (1/1) ... [2024-11-08 15:24:27,196 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:24:27" (1/1) ... [2024-11-08 15:24:27,202 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:24:27" (1/1) ... [2024-11-08 15:24:27,205 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:24:27" (1/1) ... [2024-11-08 15:24:27,208 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 15:24:27,209 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 15:24:27,209 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 15:24:27,209 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 15:24:27,210 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:24:27" (1/1) ... [2024-11-08 15:24:27,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 15:24:27,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:24:27,251 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) [2024-11-08 15:24:27,254 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 [2024-11-08 15:24:27,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 15:24:27,300 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-08 15:24:27,302 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-08 15:24:27,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 15:24:27,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 15:24:27,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 15:24:27,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-08 15:24:27,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-08 15:24:27,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 15:24:27,305 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_33_to_42_0 [2024-11-08 15:24:27,305 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_33_to_42_0 [2024-11-08 15:24:27,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 15:24:27,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 15:24:27,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 15:24:27,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-08 15:24:27,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-08 15:24:27,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 15:24:27,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 15:24:27,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 15:24:27,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 15:24:27,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 15:24:27,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-08 15:24:27,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-08 15:24:27,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-08 15:24:27,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-08 15:24:27,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 15:24:27,449 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 15:24:27,451 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 15:24:27,639 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-08 15:24:27,640 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 15:24:27,654 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 15:24:27,654 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 15:24:27,655 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 03:24:27 BoogieIcfgContainer [2024-11-08 15:24:27,655 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 15:24:27,658 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 15:24:27,658 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 15:24:27,661 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 15:24:27,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 03:24:26" (1/3) ... [2024-11-08 15:24:27,663 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@149bc818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 03:24:27, skipping insertion in model container [2024-11-08 15:24:27,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:24:27" (2/3) ... [2024-11-08 15:24:27,663 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@149bc818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 03:24:27, skipping insertion in model container [2024-11-08 15:24:27,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 03:24:27" (3/3) ... [2024-11-08 15:24:27,665 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_fermat2-ll.c [2024-11-08 15:24:27,686 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 15:24:27,687 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 15:24:27,756 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 15:24:27,765 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;@74e3f23a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 15:24:27,766 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 15:24:27,770 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 23 states have internal predecessors, (27), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 15:24:27,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 15:24:27,777 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:24:27,778 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:24:27,779 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:24:27,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:24:27,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1120562071, now seen corresponding path program 1 times [2024-11-08 15:24:27,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:24:27,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009126171] [2024-11-08 15:24:27,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:24:27,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:24:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:24:28,103 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-08 15:24:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:24:28,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-08 15:24:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:24:28,123 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 15:24:28,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:24:28,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009126171] [2024-11-08 15:24:28,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009126171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:24:28,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:24:28,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 15:24:28,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685306484] [2024-11-08 15:24:28,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:24:28,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 15:24:28,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:24:28,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 15:24:28,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 15:24:28,170 INFO L87 Difference]: Start difference. First operand has 32 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 23 states have internal predecessors, (27), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 15:24:28,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:24:28,189 INFO L93 Difference]: Finished difference Result 61 states and 80 transitions. [2024-11-08 15:24:28,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 15:24:28,192 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2024-11-08 15:24:28,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:24:28,200 INFO L225 Difference]: With dead ends: 61 [2024-11-08 15:24:28,200 INFO L226 Difference]: Without dead ends: 28 [2024-11-08 15:24:28,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 15:24:28,209 INFO L432 NwaCegarLoop]: 36 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, 36 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 [2024-11-08 15:24:28,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:24:28,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-08 15:24:28,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-08 15:24:28,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 15:24:28,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-11-08 15:24:28,246 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 21 [2024-11-08 15:24:28,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:24:28,247 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-11-08 15:24:28,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 15:24:28,248 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-11-08 15:24:28,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 15:24:28,249 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:24:28,249 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:24:28,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 15:24:28,250 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:24:28,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:24:28,251 INFO L85 PathProgramCache]: Analyzing trace with hash 233278747, now seen corresponding path program 1 times [2024-11-08 15:24:28,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:24:28,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69613975] [2024-11-08 15:24:28,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:24:28,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:24:28,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 15:24:28,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1655487133] [2024-11-08 15:24:28,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:24:28,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:24:28,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:24:28,363 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) [2024-11-08 15:24:28,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 15:24:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:24:28,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-08 15:24:28,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:24:28,613 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 [2024-11-08 15:24:28,645 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 21 treesize of output 15 [2024-11-08 15:24:28,652 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 [2024-11-08 15:24:28,688 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 [2024-11-08 15:24:28,950 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 43 treesize of output 35 [2024-11-08 15:24:28,967 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 39 treesize of output 31 [2024-11-08 15:24:28,979 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 60 treesize of output 36 [2024-11-08 15:24:29,112 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 15:24:29,112 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 15:24:29,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:24:29,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69613975] [2024-11-08 15:24:29,113 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 15:24:29,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655487133] [2024-11-08 15:24:29,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655487133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:24:29,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:24:29,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 15:24:29,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847065742] [2024-11-08 15:24:29,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:24:29,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 15:24:29,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:24:29,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 15:24:29,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 15:24:29,119 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 15:24:30,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:24:30,858 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2024-11-08 15:24:30,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 15:24:30,859 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2024-11-08 15:24:30,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:24:30,862 INFO L225 Difference]: With dead ends: 46 [2024-11-08 15:24:30,862 INFO L226 Difference]: Without dead ends: 44 [2024-11-08 15:24:30,862 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-08 15:24:30,863 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 15 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-08 15:24:30,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 137 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-08 15:24:30,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-08 15:24:30,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2024-11-08 15:24:30,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 31 states have internal predecessors, (33), 8 states have call successors, (8), 5 states have call predecessors, (8), 6 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2024-11-08 15:24:30,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2024-11-08 15:24:30,883 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 21 [2024-11-08 15:24:30,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:24:30,884 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2024-11-08 15:24:30,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-08 15:24:30,885 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2024-11-08 15:24:30,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-08 15:24:30,888 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:24:30,888 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:24:30,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 15:24:31,089 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 [2024-11-08 15:24:31,089 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:24:31,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:24:31,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1965781648, now seen corresponding path program 1 times [2024-11-08 15:24:31,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:24:31,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161755068] [2024-11-08 15:24:31,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:24:31,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:24:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 15:24:31,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520455564] [2024-11-08 15:24:31,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:24:31,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:24:31,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:24:31,179 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) [2024-11-08 15:24:31,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 15:24:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:24:31,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-08 15:24:31,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:24:31,530 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 21 treesize of output 15 [2024-11-08 15:24:31,540 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 [2024-11-08 15:24:31,562 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 [2024-11-08 15:24:31,674 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 35 treesize of output 31 [2024-11-08 15:24:31,684 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 49 treesize of output 33 [2024-11-08 15:24:32,149 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 99 treesize of output 63 [2024-11-08 15:24:32,187 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 15:24:32,188 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 69 treesize of output 65 [2024-11-08 15:24:32,326 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:24:32,326 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:24:35,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:24:35,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161755068] [2024-11-08 15:24:35,247 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 15:24:35,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520455564] [2024-11-08 15:24:35,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520455564] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:24:35,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-08 15:24:35,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2024-11-08 15:24:35,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610633789] [2024-11-08 15:24:35,248 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-08 15:24:35,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 15:24:35,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:24:35,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 15:24:35,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2024-11-08 15:24:35,250 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand has 19 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-08 15:24:39,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-08 15:24:43,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-08 15:24:44,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:24:44,662 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2024-11-08 15:24:44,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-08 15:24:44,663 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 31 [2024-11-08 15:24:44,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:24:44,665 INFO L225 Difference]: With dead ends: 57 [2024-11-08 15:24:44,667 INFO L226 Difference]: Without dead ends: 49 [2024-11-08 15:24:44,668 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=133, Invalid=989, Unknown=0, NotChecked=0, Total=1122 [2024-11-08 15:24:44,669 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 28 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2024-11-08 15:24:44,669 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 80 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 380 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2024-11-08 15:24:44,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-08 15:24:44,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-08 15:24:44,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 32 states have (on average 1.15625) internal successors, (37), 35 states have internal predecessors, (37), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2024-11-08 15:24:44,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2024-11-08 15:24:44,691 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 31 [2024-11-08 15:24:44,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:24:44,691 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2024-11-08 15:24:44,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-08 15:24:44,692 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2024-11-08 15:24:44,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-08 15:24:44,693 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:24:44,693 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:24:44,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 15:24:44,897 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 [2024-11-08 15:24:44,898 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:24:44,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:24:44,898 INFO L85 PathProgramCache]: Analyzing trace with hash 2118784734, now seen corresponding path program 1 times [2024-11-08 15:24:44,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:24:44,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863845175] [2024-11-08 15:24:44,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:24:44,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:24:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-08 15:24:44,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1543077006] [2024-11-08 15:24:44,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:24:44,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:24:44,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:24:44,970 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) [2024-11-08 15:24:44,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 15:24:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:24:45,129 WARN L253 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 123 conjuncts are in the unsatisfiable core [2024-11-08 15:24:45,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:24:45,140 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 [2024-11-08 15:24:45,224 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 21 treesize of output 15 [2024-11-08 15:24:45,230 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 [2024-11-08 15:24:45,246 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 [2024-11-08 15:24:56,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 15:24:56,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 44 [2024-11-08 15:24:57,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 69 [2024-11-08 15:24:57,143 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 47 treesize of output 35 [2024-11-08 15:24:57,149 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 121 treesize of output 77 [2024-11-08 15:24:57,281 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:24:57,281 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:25:10,057 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 15:25:10,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:25:10,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863845175] [2024-11-08 15:25:10,058 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-08 15:25:10,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543077006] [2024-11-08 15:25:10,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543077006] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:25:10,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 15:25:10,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11] total 24 [2024-11-08 15:25:10,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6343624] [2024-11-08 15:25:10,059 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 15:25:10,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 15:25:10,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:25:10,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 15:25:10,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=476, Unknown=2, NotChecked=0, Total=552 [2024-11-08 15:25:10,061 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 24 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 19 states have internal predecessors, (39), 11 states have call successors, (12), 8 states have call predecessors, (12), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-08 15:25:14,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-08 15:25:16,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-08 15:25:17,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2024-11-08 15:25:18,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0]