./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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/uthash-2.0.2/uthash_SFH_test6-2.i -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 1d2a98d270a821b4275b6b35f502458543f3a892fcdda158c69925a18d34f6cf --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 21:31:37,286 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 21:31:37,344 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 21:31:37,347 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 21:31:37,350 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 21:31:37,365 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 21:31:37,365 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 21:31:37,366 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 21:31:37,366 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 21:31:37,366 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 21:31:37,366 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 21:31:37,366 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 21:31:37,367 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 21:31:37,367 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 21:31:37,367 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 21:31:37,367 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 21:31:37,368 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 21:31:37,368 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 21:31:37,368 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 21:31:37,368 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 21:31:37,368 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 21:31:37,368 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 21:31:37,368 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 21:31:37,368 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 21:31:37,368 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 21:31:37,369 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 21:31:37,369 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 21:31:37,369 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 21:31:37,369 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 21:31:37,369 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 21:31:37,369 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 21:31:37,369 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 21:31:37,369 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 21:31:37,369 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 21:31:37,369 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 21:31:37,369 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 21:31:37,369 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 21:31:37,369 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 21:31:37,369 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 21:31:37,369 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 21:31:37,370 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 21:31:37,370 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 21:31:37,370 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 21:31:37,370 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /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 -> 1d2a98d270a821b4275b6b35f502458543f3a892fcdda158c69925a18d34f6cf [2025-03-08 21:31:37,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 21:31:37,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 21:31:37,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 21:31:37,632 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 21:31:37,632 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 21:31:37,633 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i [2025-03-08 21:31:38,789 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9128476b3/95b6c4b05deb4b168011c0bf5a369c64/FLAGaec941284 [2025-03-08 21:31:39,151 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 21:31:39,152 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-2.i [2025-03-08 21:31:39,172 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9128476b3/95b6c4b05deb4b168011c0bf5a369c64/FLAGaec941284 [2025-03-08 21:31:39,376 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9128476b3/95b6c4b05deb4b168011c0bf5a369c64 [2025-03-08 21:31:39,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 21:31:39,381 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 21:31:39,382 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 21:31:39,382 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 21:31:39,386 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 21:31:39,386 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 09:31:39" (1/1) ... [2025-03-08 21:31:39,388 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41045387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:31:39, skipping insertion in model container [2025-03-08 21:31:39,388 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 09:31:39" (1/1) ... [2025-03-08 21:31:39,429 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 21:31:39,780 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/uthash-2.0.2/uthash_SFH_test6-2.i[44118,44131] [2025-03-08 21:31:39,793 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/uthash-2.0.2/uthash_SFH_test6-2.i[44660,44673] [2025-03-08 21:31:39,862 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/uthash-2.0.2/uthash_SFH_test6-2.i[56247,56260] [2025-03-08 21:31:39,862 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/uthash-2.0.2/uthash_SFH_test6-2.i[56368,56381] [2025-03-08 21:31:39,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 21:31:39,889 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 21:31:39,914 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/uthash-2.0.2/uthash_SFH_test6-2.i[44118,44131] [2025-03-08 21:31:39,916 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/uthash-2.0.2/uthash_SFH_test6-2.i[44660,44673] [2025-03-08 21:31:39,962 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/uthash-2.0.2/uthash_SFH_test6-2.i[56247,56260] [2025-03-08 21:31:39,963 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/uthash-2.0.2/uthash_SFH_test6-2.i[56368,56381] [2025-03-08 21:31:39,970 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 21:31:40,008 INFO L204 MainTranslator]: Completed translation [2025-03-08 21:31:40,009 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:31:40 WrapperNode [2025-03-08 21:31:40,009 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 21:31:40,010 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 21:31:40,010 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 21:31:40,010 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 21:31:40,014 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:31:40" (1/1) ... [2025-03-08 21:31:40,044 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:31:40" (1/1) ... [2025-03-08 21:31:40,084 INFO L138 Inliner]: procedures = 282, calls = 349, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1595 [2025-03-08 21:31:40,085 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 21:31:40,085 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 21:31:40,085 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 21:31:40,085 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 21:31:40,092 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:31:40" (1/1) ... [2025-03-08 21:31:40,093 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:31:40" (1/1) ... [2025-03-08 21:31:40,100 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:31:40" (1/1) ... [2025-03-08 21:31:40,180 INFO L175 MemorySlicer]: Split 318 memory accesses to 4 slices as follows [2, 12, 270, 34]. 85 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 10, 0, 0]. The 62 writes are split as follows [0, 1, 57, 4]. [2025-03-08 21:31:40,180 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:31:40" (1/1) ... [2025-03-08 21:31:40,181 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:31:40" (1/1) ... [2025-03-08 21:31:40,208 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:31:40" (1/1) ... [2025-03-08 21:31:40,214 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:31:40" (1/1) ... [2025-03-08 21:31:40,217 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:31:40" (1/1) ... [2025-03-08 21:31:40,225 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:31:40" (1/1) ... [2025-03-08 21:31:40,233 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 21:31:40,236 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 21:31:40,236 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 21:31:40,236 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 21:31:40,237 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:31:40" (1/1) ... [2025-03-08 21:31:40,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 21:31:40,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 21:31:40,260 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) [2025-03-08 21:31:40,263 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 [2025-03-08 21:31:40,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-08 21:31:40,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-08 21:31:40,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-08 21:31:40,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-08 21:31:40,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-08 21:31:40,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 21:31:40,278 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2025-03-08 21:31:40,278 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2025-03-08 21:31:40,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 21:31:40,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 21:31:40,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 21:31:40,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-08 21:31:40,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-08 21:31:40,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-08 21:31:40,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 21:31:40,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 21:31:40,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 21:31:40,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-08 21:31:40,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-08 21:31:40,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 21:31:40,280 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2025-03-08 21:31:40,280 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2025-03-08 21:31:40,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-08 21:31:40,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-08 21:31:40,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-08 21:31:40,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-08 21:31:40,281 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2025-03-08 21:31:40,281 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2025-03-08 21:31:40,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 21:31:40,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 21:31:40,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 21:31:40,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 21:31:40,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 21:31:40,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 21:31:40,460 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 21:31:40,463 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 21:31:40,510 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L955: havoc #t~malloc32.base, #t~malloc32.offset; [2025-03-08 21:31:41,525 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L969: havoc alt_memcmp_#t~nondet36#1; [2025-03-08 21:31:41,526 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L979: havoc real_malloc_#t~malloc39#1.base, real_malloc_#t~malloc39#1.offset; [2025-03-08 21:31:41,526 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L987: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-03-08 21:31:41,616 INFO L? ?]: Removed 365 outVars from TransFormulas that were not future-live. [2025-03-08 21:31:41,616 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 21:31:41,657 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 21:31:41,657 INFO L336 CfgBuilder]: Removed 1 assume(true) statements. [2025-03-08 21:31:41,658 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 09:31:41 BoogieIcfgContainer [2025-03-08 21:31:41,658 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 21:31:41,659 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 21:31:41,660 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 21:31:41,663 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 21:31:41,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 09:31:39" (1/3) ... [2025-03-08 21:31:41,663 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76e26a56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 09:31:41, skipping insertion in model container [2025-03-08 21:31:41,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:31:40" (2/3) ... [2025-03-08 21:31:41,663 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76e26a56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 09:31:41, skipping insertion in model container [2025-03-08 21:31:41,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 09:31:41" (3/3) ... [2025-03-08 21:31:41,664 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test6-2.i [2025-03-08 21:31:41,674 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 21:31:41,675 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SFH_test6-2.i that has 5 procedures, 466 locations, 1 initial locations, 39 loop locations, and 4 error locations. [2025-03-08 21:31:41,723 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 21:31:41,730 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;@672b60a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 21:31:41,730 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-08 21:31:41,737 INFO L276 IsEmpty]: Start isEmpty. Operand has 466 states, 442 states have (on average 1.5950226244343892) internal successors, (705), 446 states have internal predecessors, (705), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-08 21:31:41,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-08 21:31:41,741 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:31:41,741 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:31:41,742 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-03-08 21:31:41,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:31:41,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1241237276, now seen corresponding path program 1 times [2025-03-08 21:31:41,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:31:41,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789057819] [2025-03-08 21:31:41,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:31:41,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:31:41,815 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-08 21:31:41,830 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-08 21:31:41,831 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:31:41,831 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:31:41,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:31:41,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:31:41,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789057819] [2025-03-08 21:31:41,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789057819] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:31:41,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:31:41,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 21:31:41,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434768555] [2025-03-08 21:31:41,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:31:41,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 21:31:41,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:31:41,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 21:31:41,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 21:31:41,900 INFO L87 Difference]: Start difference. First operand has 466 states, 442 states have (on average 1.5950226244343892) internal successors, (705), 446 states have internal predecessors, (705), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:42,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:31:42,018 INFO L93 Difference]: Finished difference Result 928 states and 1481 transitions. [2025-03-08 21:31:42,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 21:31:42,020 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-08 21:31:42,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:31:42,028 INFO L225 Difference]: With dead ends: 928 [2025-03-08 21:31:42,028 INFO L226 Difference]: Without dead ends: 461 [2025-03-08 21:31:42,031 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 [2025-03-08 21:31:42,035 INFO L435 NwaCegarLoop]: 617 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 21:31:42,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 617 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 21:31:42,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2025-03-08 21:31:42,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2025-03-08 21:31:42,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 438 states have (on average 1.4315068493150684) internal successors, (627), 442 states have internal predecessors, (627), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 21:31:42,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 657 transitions. [2025-03-08 21:31:42,089 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 657 transitions. Word has length 8 [2025-03-08 21:31:42,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:31:42,089 INFO L471 AbstractCegarLoop]: Abstraction has 461 states and 657 transitions. [2025-03-08 21:31:42,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:42,089 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 657 transitions. [2025-03-08 21:31:42,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-08 21:31:42,090 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:31:42,090 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:31:42,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 21:31:42,090 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-03-08 21:31:42,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:31:42,091 INFO L85 PathProgramCache]: Analyzing trace with hash 2079256789, now seen corresponding path program 1 times [2025-03-08 21:31:42,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:31:42,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005407507] [2025-03-08 21:31:42,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:31:42,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:31:42,108 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-08 21:31:42,125 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-08 21:31:42,126 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:31:42,127 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:31:42,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:31:42,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:31:42,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005407507] [2025-03-08 21:31:42,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005407507] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:31:42,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:31:42,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 21:31:42,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945325109] [2025-03-08 21:31:42,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:31:42,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 21:31:42,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:31:42,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 21:31:42,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 21:31:42,254 INFO L87 Difference]: Start difference. First operand 461 states and 657 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:42,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:31:42,498 INFO L93 Difference]: Finished difference Result 1143 states and 1639 transitions. [2025-03-08 21:31:42,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 21:31:42,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-03-08 21:31:42,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:31:42,503 INFO L225 Difference]: With dead ends: 1143 [2025-03-08 21:31:42,503 INFO L226 Difference]: Without dead ends: 895 [2025-03-08 21:31:42,507 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 21:31:42,508 INFO L435 NwaCegarLoop]: 637 mSDtfsCounter, 600 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 1855 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 21:31:42,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [614 Valid, 1855 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 21:31:42,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2025-03-08 21:31:42,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 463. [2025-03-08 21:31:42,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 440 states have (on average 1.4295454545454545) internal successors, (629), 444 states have internal predecessors, (629), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 21:31:42,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 659 transitions. [2025-03-08 21:31:42,545 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 659 transitions. Word has length 10 [2025-03-08 21:31:42,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:31:42,545 INFO L471 AbstractCegarLoop]: Abstraction has 463 states and 659 transitions. [2025-03-08 21:31:42,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:42,545 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 659 transitions. [2025-03-08 21:31:42,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-08 21:31:42,546 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:31:42,546 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, 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] [2025-03-08 21:31:42,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 21:31:42,546 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-03-08 21:31:42,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:31:42,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1756423654, now seen corresponding path program 1 times [2025-03-08 21:31:42,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:31:42,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748073693] [2025-03-08 21:31:42,547 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:31:42,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:31:42,582 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-08 21:31:42,594 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-08 21:31:42,595 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:31:42,595 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:31:42,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:31:42,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:31:42,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748073693] [2025-03-08 21:31:42,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748073693] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:31:42,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:31:42,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 21:31:42,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637039750] [2025-03-08 21:31:42,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:31:42,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 21:31:42,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:31:42,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 21:31:42,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 21:31:42,770 INFO L87 Difference]: Start difference. First operand 463 states and 659 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:42,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:31:42,919 INFO L93 Difference]: Finished difference Result 925 states and 1317 transitions. [2025-03-08 21:31:42,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 21:31:42,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2025-03-08 21:31:42,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:31:42,923 INFO L225 Difference]: With dead ends: 925 [2025-03-08 21:31:42,925 INFO L226 Difference]: Without dead ends: 466 [2025-03-08 21:31:42,926 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 21:31:42,927 INFO L435 NwaCegarLoop]: 587 mSDtfsCounter, 105 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 21:31:42,927 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1677 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 21:31:42,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2025-03-08 21:31:42,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 463. [2025-03-08 21:31:42,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 440 states have (on average 1.4136363636363636) internal successors, (622), 444 states have internal predecessors, (622), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 21:31:42,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 652 transitions. [2025-03-08 21:31:42,943 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 652 transitions. Word has length 64 [2025-03-08 21:31:42,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:31:42,943 INFO L471 AbstractCegarLoop]: Abstraction has 463 states and 652 transitions. [2025-03-08 21:31:42,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:42,943 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 652 transitions. [2025-03-08 21:31:42,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-08 21:31:42,945 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:31:42,946 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, 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] [2025-03-08 21:31:42,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 21:31:42,946 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-03-08 21:31:42,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:31:42,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1904171213, now seen corresponding path program 1 times [2025-03-08 21:31:42,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:31:42,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187524866] [2025-03-08 21:31:42,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:31:42,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:31:42,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-08 21:31:43,021 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-08 21:31:43,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:31:43,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:31:43,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:31:43,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:31:43,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187524866] [2025-03-08 21:31:43,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187524866] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:31:43,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:31:43,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 21:31:43,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342036832] [2025-03-08 21:31:43,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:31:43,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 21:31:43,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:31:43,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 21:31:43,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 21:31:43,323 INFO L87 Difference]: Start difference. First operand 463 states and 652 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:43,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:31:43,869 INFO L93 Difference]: Finished difference Result 956 states and 1345 transitions. [2025-03-08 21:31:43,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 21:31:43,870 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2025-03-08 21:31:43,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:31:43,872 INFO L225 Difference]: With dead ends: 956 [2025-03-08 21:31:43,872 INFO L226 Difference]: Without dead ends: 497 [2025-03-08 21:31:43,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-08 21:31:43,873 INFO L435 NwaCegarLoop]: 593 mSDtfsCounter, 14 mSDsluCounter, 1897 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2490 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 21:31:43,873 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2490 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 21:31:43,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2025-03-08 21:31:43,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 490. [2025-03-08 21:31:43,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 467 states have (on average 1.4025695931477515) internal successors, (655), 471 states have internal predecessors, (655), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 21:31:43,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 685 transitions. [2025-03-08 21:31:43,892 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 685 transitions. Word has length 64 [2025-03-08 21:31:43,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:31:43,892 INFO L471 AbstractCegarLoop]: Abstraction has 490 states and 685 transitions. [2025-03-08 21:31:43,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:43,893 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 685 transitions. [2025-03-08 21:31:43,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-08 21:31:43,894 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:31:43,894 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, 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] [2025-03-08 21:31:43,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 21:31:43,894 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-03-08 21:31:43,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:31:43,896 INFO L85 PathProgramCache]: Analyzing trace with hash -805715037, now seen corresponding path program 1 times [2025-03-08 21:31:43,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:31:43,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370452765] [2025-03-08 21:31:43,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:31:43,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:31:43,914 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-08 21:31:43,951 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-08 21:31:43,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:31:43,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:31:44,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:31:44,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:31:44,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370452765] [2025-03-08 21:31:44,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370452765] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:31:44,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:31:44,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 21:31:44,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051077458] [2025-03-08 21:31:44,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:31:44,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 21:31:44,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:31:44,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 21:31:44,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 21:31:44,180 INFO L87 Difference]: Start difference. First operand 490 states and 685 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:44,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:31:44,413 INFO L93 Difference]: Finished difference Result 985 states and 1380 transitions. [2025-03-08 21:31:44,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 21:31:44,415 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2025-03-08 21:31:44,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:31:44,418 INFO L225 Difference]: With dead ends: 985 [2025-03-08 21:31:44,418 INFO L226 Difference]: Without dead ends: 499 [2025-03-08 21:31:44,419 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 21:31:44,423 INFO L435 NwaCegarLoop]: 598 mSDtfsCounter, 17 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 21:31:44,423 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1630 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 21:31:44,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2025-03-08 21:31:44,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 491. [2025-03-08 21:31:44,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 468 states have (on average 1.4017094017094016) internal successors, (656), 472 states have internal predecessors, (656), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 21:31:44,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 686 transitions. [2025-03-08 21:31:44,441 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 686 transitions. Word has length 65 [2025-03-08 21:31:44,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:31:44,442 INFO L471 AbstractCegarLoop]: Abstraction has 491 states and 686 transitions. [2025-03-08 21:31:44,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:44,442 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 686 transitions. [2025-03-08 21:31:44,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-08 21:31:44,443 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:31:44,443 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, 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] [2025-03-08 21:31:44,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 21:31:44,445 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-03-08 21:31:44,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:31:44,445 INFO L85 PathProgramCache]: Analyzing trace with hash 360295658, now seen corresponding path program 1 times [2025-03-08 21:31:44,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:31:44,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197849355] [2025-03-08 21:31:44,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:31:44,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:31:44,489 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-08 21:31:44,513 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-08 21:31:44,513 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:31:44,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:31:44,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:31:44,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:31:44,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197849355] [2025-03-08 21:31:44,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197849355] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:31:44,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:31:44,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 21:31:44,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842393361] [2025-03-08 21:31:44,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:31:44,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 21:31:44,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:31:44,689 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 21:31:44,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 21:31:44,690 INFO L87 Difference]: Start difference. First operand 491 states and 686 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:45,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:31:45,220 INFO L93 Difference]: Finished difference Result 990 states and 1387 transitions. [2025-03-08 21:31:45,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 21:31:45,221 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2025-03-08 21:31:45,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:31:45,223 INFO L225 Difference]: With dead ends: 990 [2025-03-08 21:31:45,223 INFO L226 Difference]: Without dead ends: 503 [2025-03-08 21:31:45,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 21:31:45,227 INFO L435 NwaCegarLoop]: 589 mSDtfsCounter, 14 mSDsluCounter, 2403 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2992 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 21:31:45,228 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2992 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 21:31:45,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2025-03-08 21:31:45,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 500. [2025-03-08 21:31:45,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 477 states have (on average 1.4025157232704402) internal successors, (669), 481 states have internal predecessors, (669), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 21:31:45,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 699 transitions. [2025-03-08 21:31:45,241 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 699 transitions. Word has length 65 [2025-03-08 21:31:45,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:31:45,242 INFO L471 AbstractCegarLoop]: Abstraction has 500 states and 699 transitions. [2025-03-08 21:31:45,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:45,242 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 699 transitions. [2025-03-08 21:31:45,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-08 21:31:45,243 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:31:45,243 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, 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] [2025-03-08 21:31:45,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 21:31:45,243 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-03-08 21:31:45,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:31:45,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1037271626, now seen corresponding path program 1 times [2025-03-08 21:31:45,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:31:45,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478222488] [2025-03-08 21:31:45,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:31:45,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:31:45,262 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-08 21:31:45,275 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-08 21:31:45,275 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:31:45,275 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:31:45,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:31:45,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:31:45,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478222488] [2025-03-08 21:31:45,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478222488] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:31:45,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:31:45,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 21:31:45,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084873359] [2025-03-08 21:31:45,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:31:45,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 21:31:45,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:31:45,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 21:31:45,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 21:31:45,469 INFO L87 Difference]: Start difference. First operand 500 states and 699 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:45,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:31:45,880 INFO L93 Difference]: Finished difference Result 999 states and 1399 transitions. [2025-03-08 21:31:45,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 21:31:45,880 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2025-03-08 21:31:45,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:31:45,882 INFO L225 Difference]: With dead ends: 999 [2025-03-08 21:31:45,882 INFO L226 Difference]: Without dead ends: 503 [2025-03-08 21:31:45,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 21:31:45,884 INFO L435 NwaCegarLoop]: 599 mSDtfsCounter, 8 mSDsluCounter, 1920 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2519 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 21:31:45,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2519 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 21:31:45,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2025-03-08 21:31:45,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 503. [2025-03-08 21:31:45,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 480 states have (on average 1.4) internal successors, (672), 484 states have internal predecessors, (672), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 21:31:45,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 702 transitions. [2025-03-08 21:31:45,894 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 702 transitions. Word has length 66 [2025-03-08 21:31:45,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:31:45,895 INFO L471 AbstractCegarLoop]: Abstraction has 503 states and 702 transitions. [2025-03-08 21:31:45,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:45,895 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 702 transitions. [2025-03-08 21:31:45,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-08 21:31:45,895 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:31:45,896 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, 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] [2025-03-08 21:31:45,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 21:31:45,896 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-03-08 21:31:45,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:31:45,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1590226202, now seen corresponding path program 1 times [2025-03-08 21:31:45,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:31:45,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197691582] [2025-03-08 21:31:45,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:31:45,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:31:45,912 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-08 21:31:45,925 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-08 21:31:45,926 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:31:45,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:31:46,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:31:46,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:31:46,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197691582] [2025-03-08 21:31:46,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197691582] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:31:46,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:31:46,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 21:31:46,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564102551] [2025-03-08 21:31:46,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:31:46,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 21:31:46,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:31:46,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 21:31:46,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 21:31:46,163 INFO L87 Difference]: Start difference. First operand 503 states and 702 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:46,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:31:46,872 INFO L93 Difference]: Finished difference Result 1018 states and 1425 transitions. [2025-03-08 21:31:46,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 21:31:46,874 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2025-03-08 21:31:46,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:31:46,877 INFO L225 Difference]: With dead ends: 1018 [2025-03-08 21:31:46,877 INFO L226 Difference]: Without dead ends: 519 [2025-03-08 21:31:46,878 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-03-08 21:31:46,878 INFO L435 NwaCegarLoop]: 590 mSDtfsCounter, 33 mSDsluCounter, 3472 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 4062 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 21:31:46,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 4062 Invalid, 1183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 21:31:46,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2025-03-08 21:31:46,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 513. [2025-03-08 21:31:46,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 490 states have (on average 1.4) internal successors, (686), 494 states have internal predecessors, (686), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 21:31:46,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 716 transitions. [2025-03-08 21:31:46,891 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 716 transitions. Word has length 66 [2025-03-08 21:31:46,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:31:46,892 INFO L471 AbstractCegarLoop]: Abstraction has 513 states and 716 transitions. [2025-03-08 21:31:46,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:46,892 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 716 transitions. [2025-03-08 21:31:46,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-08 21:31:46,892 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:31:46,893 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, 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] [2025-03-08 21:31:46,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 21:31:46,893 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-03-08 21:31:46,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:31:46,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1785205930, now seen corresponding path program 1 times [2025-03-08 21:31:46,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:31:46,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921160634] [2025-03-08 21:31:46,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:31:46,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:31:46,912 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-08 21:31:46,936 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-08 21:31:46,937 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:31:46,937 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:31:47,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:31:47,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:31:47,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921160634] [2025-03-08 21:31:47,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921160634] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:31:47,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:31:47,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 21:31:47,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277750005] [2025-03-08 21:31:47,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:31:47,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 21:31:47,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:31:47,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 21:31:47,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-08 21:31:47,237 INFO L87 Difference]: Start difference. First operand 513 states and 716 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:47,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:31:47,755 INFO L93 Difference]: Finished difference Result 1028 states and 1437 transitions. [2025-03-08 21:31:47,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 21:31:47,755 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2025-03-08 21:31:47,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:31:47,757 INFO L225 Difference]: With dead ends: 1028 [2025-03-08 21:31:47,757 INFO L226 Difference]: Without dead ends: 519 [2025-03-08 21:31:47,758 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2025-03-08 21:31:47,759 INFO L435 NwaCegarLoop]: 593 mSDtfsCounter, 27 mSDsluCounter, 2496 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 3089 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 21:31:47,760 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 3089 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 21:31:47,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2025-03-08 21:31:47,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 516. [2025-03-08 21:31:47,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 493 states have (on average 1.3975659229208925) internal successors, (689), 497 states have internal predecessors, (689), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 21:31:47,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 719 transitions. [2025-03-08 21:31:47,772 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 719 transitions. Word has length 66 [2025-03-08 21:31:47,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:31:47,772 INFO L471 AbstractCegarLoop]: Abstraction has 516 states and 719 transitions. [2025-03-08 21:31:47,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:47,772 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 719 transitions. [2025-03-08 21:31:47,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-08 21:31:47,773 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:31:47,773 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, 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, 1] [2025-03-08 21:31:47,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 21:31:47,773 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-03-08 21:31:47,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:31:47,776 INFO L85 PathProgramCache]: Analyzing trace with hash -2053207665, now seen corresponding path program 1 times [2025-03-08 21:31:47,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:31:47,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852210657] [2025-03-08 21:31:47,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:31:47,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:31:47,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-08 21:31:47,812 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-08 21:31:47,812 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:31:47,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:31:47,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:31:47,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:31:47,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852210657] [2025-03-08 21:31:47,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852210657] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:31:47,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:31:47,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 21:31:47,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8072931] [2025-03-08 21:31:47,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:31:47,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 21:31:47,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:31:47,961 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 21:31:47,961 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 21:31:47,961 INFO L87 Difference]: Start difference. First operand 516 states and 719 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:48,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:31:48,476 INFO L93 Difference]: Finished difference Result 1035 states and 1445 transitions. [2025-03-08 21:31:48,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 21:31:48,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2025-03-08 21:31:48,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:31:48,479 INFO L225 Difference]: With dead ends: 1035 [2025-03-08 21:31:48,479 INFO L226 Difference]: Without dead ends: 523 [2025-03-08 21:31:48,480 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-08 21:31:48,480 INFO L435 NwaCegarLoop]: 594 mSDtfsCounter, 12 mSDsluCounter, 2404 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2998 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 21:31:48,480 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2998 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 21:31:48,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2025-03-08 21:31:48,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 516. [2025-03-08 21:31:48,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 493 states have (on average 1.3975659229208925) internal successors, (689), 497 states have internal predecessors, (689), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 21:31:48,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 719 transitions. [2025-03-08 21:31:48,504 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 719 transitions. Word has length 67 [2025-03-08 21:31:48,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:31:48,504 INFO L471 AbstractCegarLoop]: Abstraction has 516 states and 719 transitions. [2025-03-08 21:31:48,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:48,505 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 719 transitions. [2025-03-08 21:31:48,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-08 21:31:48,505 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:31:48,505 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, 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, 1] [2025-03-08 21:31:48,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 21:31:48,506 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-03-08 21:31:48,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:31:48,506 INFO L85 PathProgramCache]: Analyzing trace with hash -769544067, now seen corresponding path program 1 times [2025-03-08 21:31:48,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:31:48,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549109855] [2025-03-08 21:31:48,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:31:48,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:31:48,521 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-08 21:31:48,550 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-08 21:31:48,551 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:31:48,551 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:31:48,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:31:48,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:31:48,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549109855] [2025-03-08 21:31:48,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549109855] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:31:48,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:31:48,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 21:31:48,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175364536] [2025-03-08 21:31:48,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:31:48,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 21:31:48,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:31:48,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 21:31:48,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-08 21:31:48,886 INFO L87 Difference]: Start difference. First operand 516 states and 719 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:50,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:31:50,035 INFO L93 Difference]: Finished difference Result 1518 states and 2129 transitions. [2025-03-08 21:31:50,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-08 21:31:50,035 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2025-03-08 21:31:50,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:31:50,039 INFO L225 Difference]: With dead ends: 1518 [2025-03-08 21:31:50,039 INFO L226 Difference]: Without dead ends: 1006 [2025-03-08 21:31:50,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2025-03-08 21:31:50,040 INFO L435 NwaCegarLoop]: 580 mSDtfsCounter, 900 mSDsluCounter, 3253 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 3833 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-08 21:31:50,040 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 3833 Invalid, 1522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-08 21:31:50,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2025-03-08 21:31:50,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 546. [2025-03-08 21:31:50,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 523 states have (on average 1.384321223709369) internal successors, (724), 527 states have internal predecessors, (724), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 21:31:50,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 754 transitions. [2025-03-08 21:31:50,055 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 754 transitions. Word has length 67 [2025-03-08 21:31:50,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:31:50,055 INFO L471 AbstractCegarLoop]: Abstraction has 546 states and 754 transitions. [2025-03-08 21:31:50,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:50,056 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 754 transitions. [2025-03-08 21:31:50,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-08 21:31:50,056 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:31:50,056 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, 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, 1, 1] [2025-03-08 21:31:50,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 21:31:50,057 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-03-08 21:31:50,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:31:50,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1457073885, now seen corresponding path program 1 times [2025-03-08 21:31:50,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:31:50,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325892626] [2025-03-08 21:31:50,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:31:50,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:31:50,072 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-08 21:31:50,086 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-08 21:31:50,086 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:31:50,086 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:31:50,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:31:50,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:31:50,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325892626] [2025-03-08 21:31:50,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325892626] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:31:50,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:31:50,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 21:31:50,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830242980] [2025-03-08 21:31:50,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:31:50,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 21:31:50,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:31:50,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 21:31:50,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-08 21:31:50,230 INFO L87 Difference]: Start difference. First operand 546 states and 754 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:50,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:31:50,712 INFO L93 Difference]: Finished difference Result 1071 states and 1487 transitions. [2025-03-08 21:31:50,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 21:31:50,712 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2025-03-08 21:31:50,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:31:50,715 INFO L225 Difference]: With dead ends: 1071 [2025-03-08 21:31:50,715 INFO L226 Difference]: Without dead ends: 559 [2025-03-08 21:31:50,716 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-08 21:31:50,716 INFO L435 NwaCegarLoop]: 590 mSDtfsCounter, 20 mSDsluCounter, 2993 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 3583 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 21:31:50,716 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 3583 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 21:31:50,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2025-03-08 21:31:50,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 549. [2025-03-08 21:31:50,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 526 states have (on average 1.3840304182509506) internal successors, (728), 530 states have internal predecessors, (728), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 21:31:50,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 758 transitions. [2025-03-08 21:31:50,728 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 758 transitions. Word has length 68 [2025-03-08 21:31:50,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:31:50,728 INFO L471 AbstractCegarLoop]: Abstraction has 549 states and 758 transitions. [2025-03-08 21:31:50,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:50,729 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 758 transitions. [2025-03-08 21:31:50,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-08 21:31:50,729 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:31:50,729 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, 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, 1, 1] [2025-03-08 21:31:50,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-08 21:31:50,730 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-03-08 21:31:50,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:31:50,730 INFO L85 PathProgramCache]: Analyzing trace with hash -213932779, now seen corresponding path program 1 times [2025-03-08 21:31:50,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:31:50,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936610786] [2025-03-08 21:31:50,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:31:50,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:31:50,745 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-08 21:31:50,760 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-08 21:31:50,760 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:31:50,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:31:50,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:31:50,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:31:50,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936610786] [2025-03-08 21:31:50,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936610786] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:31:50,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:31:50,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 21:31:50,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184112252] [2025-03-08 21:31:50,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:31:50,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 21:31:50,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:31:50,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 21:31:50,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 21:31:50,921 INFO L87 Difference]: Start difference. First operand 549 states and 758 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:51,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:31:51,644 INFO L93 Difference]: Finished difference Result 1092 states and 1516 transitions. [2025-03-08 21:31:51,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 21:31:51,644 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2025-03-08 21:31:51,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:31:51,646 INFO L225 Difference]: With dead ends: 1092 [2025-03-08 21:31:51,647 INFO L226 Difference]: Without dead ends: 577 [2025-03-08 21:31:51,647 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-03-08 21:31:51,649 INFO L435 NwaCegarLoop]: 601 mSDtfsCounter, 37 mSDsluCounter, 3393 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3994 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 21:31:51,649 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3994 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 21:31:51,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2025-03-08 21:31:51,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 549. [2025-03-08 21:31:51,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 526 states have (on average 1.3840304182509506) internal successors, (728), 530 states have internal predecessors, (728), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 21:31:51,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 758 transitions. [2025-03-08 21:31:51,663 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 758 transitions. Word has length 68 [2025-03-08 21:31:51,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:31:51,664 INFO L471 AbstractCegarLoop]: Abstraction has 549 states and 758 transitions. [2025-03-08 21:31:51,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:51,664 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 758 transitions. [2025-03-08 21:31:51,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-08 21:31:51,665 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:31:51,665 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, 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, 1, 1, 1] [2025-03-08 21:31:51,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-08 21:31:51,665 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-03-08 21:31:51,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:31:51,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1017688498, now seen corresponding path program 1 times [2025-03-08 21:31:51,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:31:51,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485826441] [2025-03-08 21:31:51,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:31:51,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:31:51,683 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-08 21:31:51,698 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-08 21:31:51,700 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:31:51,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:31:51,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:31:51,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:31:51,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485826441] [2025-03-08 21:31:51,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485826441] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:31:51,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:31:51,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 21:31:51,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602241167] [2025-03-08 21:31:51,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:31:51,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 21:31:51,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:31:51,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 21:31:51,885 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-08 21:31:51,886 INFO L87 Difference]: Start difference. First operand 549 states and 758 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:52,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:31:52,553 INFO L93 Difference]: Finished difference Result 1080 states and 1500 transitions. [2025-03-08 21:31:52,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 21:31:52,554 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2025-03-08 21:31:52,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:31:52,556 INFO L225 Difference]: With dead ends: 1080 [2025-03-08 21:31:52,556 INFO L226 Difference]: Without dead ends: 565 [2025-03-08 21:31:52,557 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-03-08 21:31:52,558 INFO L435 NwaCegarLoop]: 596 mSDtfsCounter, 23 mSDsluCounter, 3903 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 4499 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 21:31:52,558 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 4499 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1485 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 21:31:52,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2025-03-08 21:31:52,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 559. [2025-03-08 21:31:52,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 536 states have (on average 1.3805970149253732) internal successors, (740), 540 states have internal predecessors, (740), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 21:31:52,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 770 transitions. [2025-03-08 21:31:52,569 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 770 transitions. Word has length 69 [2025-03-08 21:31:52,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:31:52,569 INFO L471 AbstractCegarLoop]: Abstraction has 559 states and 770 transitions. [2025-03-08 21:31:52,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:52,569 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 770 transitions. [2025-03-08 21:31:52,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-08 21:31:52,570 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:31:52,570 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, 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, 1, 1, 1] [2025-03-08 21:31:52,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-08 21:31:52,570 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-03-08 21:31:52,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:31:52,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1279287530, now seen corresponding path program 1 times [2025-03-08 21:31:52,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:31:52,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692545941] [2025-03-08 21:31:52,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:31:52,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:31:52,585 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-08 21:31:52,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-08 21:31:52,600 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:31:52,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:31:52,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:31:52,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:31:52,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692545941] [2025-03-08 21:31:52,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692545941] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:31:52,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:31:52,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 21:31:52,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613687106] [2025-03-08 21:31:52,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:31:52,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 21:31:52,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:31:52,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 21:31:52,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-08 21:31:52,787 INFO L87 Difference]: Start difference. First operand 559 states and 770 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:53,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:31:53,478 INFO L93 Difference]: Finished difference Result 1102 states and 1527 transitions. [2025-03-08 21:31:53,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 21:31:53,479 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2025-03-08 21:31:53,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:31:53,481 INFO L225 Difference]: With dead ends: 1102 [2025-03-08 21:31:53,481 INFO L226 Difference]: Without dead ends: 577 [2025-03-08 21:31:53,482 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-08 21:31:53,482 INFO L435 NwaCegarLoop]: 584 mSDtfsCounter, 17 mSDsluCounter, 3892 mSDsCounter, 0 mSdLazyCounter, 1439 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4476 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 21:31:53,483 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4476 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1439 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 21:31:53,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2025-03-08 21:31:53,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 562. [2025-03-08 21:31:53,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 539 states have (on average 1.3803339517625233) internal successors, (744), 543 states have internal predecessors, (744), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 21:31:53,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 774 transitions. [2025-03-08 21:31:53,495 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 774 transitions. Word has length 69 [2025-03-08 21:31:53,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:31:53,496 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 774 transitions. [2025-03-08 21:31:53,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:53,496 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 774 transitions. [2025-03-08 21:31:53,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-08 21:31:53,496 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:31:53,496 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, 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, 1, 1, 1] [2025-03-08 21:31:53,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-08 21:31:53,497 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-03-08 21:31:53,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:31:53,497 INFO L85 PathProgramCache]: Analyzing trace with hash 100116598, now seen corresponding path program 1 times [2025-03-08 21:31:53,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:31:53,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509095466] [2025-03-08 21:31:53,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:31:53,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:31:53,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-08 21:31:53,535 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-08 21:31:53,536 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:31:53,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:31:53,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:31:53,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:31:53,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509095466] [2025-03-08 21:31:53,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509095466] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:31:53,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:31:53,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 21:31:53,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336015063] [2025-03-08 21:31:53,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:31:53,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 21:31:53,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:31:53,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 21:31:53,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 21:31:53,685 INFO L87 Difference]: Start difference. First operand 562 states and 774 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:54,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:31:54,157 INFO L93 Difference]: Finished difference Result 1097 states and 1517 transitions. [2025-03-08 21:31:54,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 21:31:54,158 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2025-03-08 21:31:54,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:31:54,160 INFO L225 Difference]: With dead ends: 1097 [2025-03-08 21:31:54,160 INFO L226 Difference]: Without dead ends: 569 [2025-03-08 21:31:54,161 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 21:31:54,162 INFO L435 NwaCegarLoop]: 591 mSDtfsCounter, 11 mSDsluCounter, 2438 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3029 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 21:31:54,162 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 3029 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 21:31:54,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2025-03-08 21:31:54,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 562. [2025-03-08 21:31:54,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 539 states have (on average 1.3784786641929498) internal successors, (743), 543 states have internal predecessors, (743), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 21:31:54,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 773 transitions. [2025-03-08 21:31:54,175 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 773 transitions. Word has length 69 [2025-03-08 21:31:54,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:31:54,175 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 773 transitions. [2025-03-08 21:31:54,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:54,176 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 773 transitions. [2025-03-08 21:31:54,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-08 21:31:54,176 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:31:54,177 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, 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, 1, 1, 1] [2025-03-08 21:31:54,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-08 21:31:54,177 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-03-08 21:31:54,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:31:54,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1019651762, now seen corresponding path program 1 times [2025-03-08 21:31:54,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:31:54,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364918851] [2025-03-08 21:31:54,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:31:54,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:31:54,195 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-08 21:31:54,207 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-08 21:31:54,207 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:31:54,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:31:54,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:31:54,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:31:54,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364918851] [2025-03-08 21:31:54,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364918851] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:31:54,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:31:54,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 21:31:54,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559906231] [2025-03-08 21:31:54,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:31:54,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 21:31:54,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:31:54,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 21:31:54,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 21:31:54,332 INFO L87 Difference]: Start difference. First operand 562 states and 773 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:54,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:31:54,802 INFO L93 Difference]: Finished difference Result 1095 states and 1515 transitions. [2025-03-08 21:31:54,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 21:31:54,803 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2025-03-08 21:31:54,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:31:54,805 INFO L225 Difference]: With dead ends: 1095 [2025-03-08 21:31:54,805 INFO L226 Difference]: Without dead ends: 567 [2025-03-08 21:31:54,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-08 21:31:54,806 INFO L435 NwaCegarLoop]: 594 mSDtfsCounter, 8 mSDsluCounter, 2371 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2965 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 21:31:54,806 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2965 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 21:31:54,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2025-03-08 21:31:54,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 566. [2025-03-08 21:31:54,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 543 states have (on average 1.3775322283609577) internal successors, (748), 547 states have internal predecessors, (748), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 21:31:54,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 778 transitions. [2025-03-08 21:31:54,820 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 778 transitions. Word has length 69 [2025-03-08 21:31:54,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:31:54,821 INFO L471 AbstractCegarLoop]: Abstraction has 566 states and 778 transitions. [2025-03-08 21:31:54,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:54,821 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 778 transitions. [2025-03-08 21:31:54,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-08 21:31:54,822 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:31:54,822 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, 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, 1, 1, 1, 1] [2025-03-08 21:31:54,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-08 21:31:54,823 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-03-08 21:31:54,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:31:54,823 INFO L85 PathProgramCache]: Analyzing trace with hash 395106455, now seen corresponding path program 1 times [2025-03-08 21:31:54,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:31:54,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781154418] [2025-03-08 21:31:54,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:31:54,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:31:54,840 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-08 21:31:54,863 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-08 21:31:54,863 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:31:54,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:31:55,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:31:55,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:31:55,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781154418] [2025-03-08 21:31:55,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781154418] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:31:55,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:31:55,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 21:31:55,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167131454] [2025-03-08 21:31:55,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:31:55,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 21:31:55,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:31:55,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 21:31:55,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-08 21:31:55,105 INFO L87 Difference]: Start difference. First operand 566 states and 778 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:31:59,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-08 21:31:59,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:31:59,997 INFO L93 Difference]: Finished difference Result 1110 states and 1535 transitions. [2025-03-08 21:31:59,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 21:31:59,998 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2025-03-08 21:31:59,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:32:00,000 INFO L225 Difference]: With dead ends: 1110 [2025-03-08 21:32:00,000 INFO L226 Difference]: Without dead ends: 578 [2025-03-08 21:32:00,001 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-08 21:32:00,001 INFO L435 NwaCegarLoop]: 593 mSDtfsCounter, 13 mSDsluCounter, 3389 mSDsCounter, 0 mSdLazyCounter, 1352 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3982 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1352 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2025-03-08 21:32:00,001 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3982 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1352 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2025-03-08 21:32:00,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2025-03-08 21:32:00,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 570. [2025-03-08 21:32:00,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 547 states have (on average 1.376599634369287) internal successors, (753), 551 states have internal predecessors, (753), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 21:32:00,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 783 transitions. [2025-03-08 21:32:00,012 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 783 transitions. Word has length 70 [2025-03-08 21:32:00,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:32:00,012 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 783 transitions. [2025-03-08 21:32:00,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:32:00,012 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 783 transitions. [2025-03-08 21:32:00,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-08 21:32:00,013 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:32:00,013 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, 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, 1, 1, 1, 1] [2025-03-08 21:32:00,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-08 21:32:00,013 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-03-08 21:32:00,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:32:00,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1008537532, now seen corresponding path program 1 times [2025-03-08 21:32:00,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:32:00,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274585701] [2025-03-08 21:32:00,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:32:00,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:32:00,028 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-08 21:32:00,038 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-08 21:32:00,039 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:32:00,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:32:00,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:32:00,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:32:00,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274585701] [2025-03-08 21:32:00,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274585701] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:32:00,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:32:00,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-08 21:32:00,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589706008] [2025-03-08 21:32:00,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:32:00,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 21:32:00,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:32:00,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 21:32:00,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-03-08 21:32:00,205 INFO L87 Difference]: Start difference. First operand 570 states and 783 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:32:00,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:32:00,815 INFO L93 Difference]: Finished difference Result 1120 states and 1546 transitions. [2025-03-08 21:32:00,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 21:32:00,815 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2025-03-08 21:32:00,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:32:00,817 INFO L225 Difference]: With dead ends: 1120 [2025-03-08 21:32:00,818 INFO L226 Difference]: Without dead ends: 584 [2025-03-08 21:32:00,818 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-03-08 21:32:00,819 INFO L435 NwaCegarLoop]: 591 mSDtfsCounter, 40 mSDsluCounter, 3942 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 4533 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 21:32:00,819 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 4533 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 21:32:00,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2025-03-08 21:32:00,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 573. [2025-03-08 21:32:00,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 550 states have (on average 1.3745454545454545) internal successors, (756), 554 states have internal predecessors, (756), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 21:32:00,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 786 transitions. [2025-03-08 21:32:00,828 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 786 transitions. Word has length 70 [2025-03-08 21:32:00,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:32:00,828 INFO L471 AbstractCegarLoop]: Abstraction has 573 states and 786 transitions. [2025-03-08 21:32:00,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:32:00,828 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 786 transitions. [2025-03-08 21:32:00,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-08 21:32:00,829 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:32:00,829 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, 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, 1, 1, 1, 1] [2025-03-08 21:32:00,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-08 21:32:00,829 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-03-08 21:32:00,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:32:00,830 INFO L85 PathProgramCache]: Analyzing trace with hash 875471055, now seen corresponding path program 1 times [2025-03-08 21:32:00,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:32:00,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304129626] [2025-03-08 21:32:00,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:32:00,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:32:00,844 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-08 21:32:00,862 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-08 21:32:00,862 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:32:00,862 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:32:01,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:32:01,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:32:01,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304129626] [2025-03-08 21:32:01,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304129626] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:32:01,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:32:01,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-08 21:32:01,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927806242] [2025-03-08 21:32:01,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:32:01,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 21:32:01,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:32:01,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 21:32:01,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-08 21:32:01,145 INFO L87 Difference]: Start difference. First operand 573 states and 786 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:32:05,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-08 21:32:06,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:32:06,146 INFO L93 Difference]: Finished difference Result 1133 states and 1562 transitions. [2025-03-08 21:32:06,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 21:32:06,147 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2025-03-08 21:32:06,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:32:06,149 INFO L225 Difference]: With dead ends: 1133 [2025-03-08 21:32:06,149 INFO L226 Difference]: Without dead ends: 594 [2025-03-08 21:32:06,150 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2025-03-08 21:32:06,150 INFO L435 NwaCegarLoop]: 595 mSDtfsCounter, 42 mSDsluCounter, 3825 mSDsCounter, 0 mSdLazyCounter, 1548 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 4420 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1548 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2025-03-08 21:32:06,150 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 4420 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1548 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2025-03-08 21:32:06,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2025-03-08 21:32:06,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 574. [2025-03-08 21:32:06,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 551 states have (on average 1.3738656987295825) internal successors, (757), 555 states have internal predecessors, (757), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 21:32:06,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 787 transitions. [2025-03-08 21:32:06,160 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 787 transitions. Word has length 70 [2025-03-08 21:32:06,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:32:06,161 INFO L471 AbstractCegarLoop]: Abstraction has 574 states and 787 transitions. [2025-03-08 21:32:06,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 10 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:32:06,161 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 787 transitions. [2025-03-08 21:32:06,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-08 21:32:06,161 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:32:06,161 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, 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, 1, 1, 1, 1] [2025-03-08 21:32:06,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-08 21:32:06,162 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-03-08 21:32:06,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:32:06,162 INFO L85 PathProgramCache]: Analyzing trace with hash 555428946, now seen corresponding path program 1 times [2025-03-08 21:32:06,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:32:06,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369496731] [2025-03-08 21:32:06,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:32:06,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:32:06,175 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-08 21:32:06,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-08 21:32:06,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:32:06,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:32:06,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:32:06,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:32:06,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369496731] [2025-03-08 21:32:06,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369496731] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:32:06,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:32:06,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 21:32:06,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972346301] [2025-03-08 21:32:06,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:32:06,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 21:32:06,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:32:06,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 21:32:06,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 21:32:06,317 INFO L87 Difference]: Start difference. First operand 574 states and 787 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:32:07,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:32:07,043 INFO L93 Difference]: Finished difference Result 1140 states and 1571 transitions. [2025-03-08 21:32:07,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 21:32:07,044 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2025-03-08 21:32:07,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:32:07,046 INFO L225 Difference]: With dead ends: 1140 [2025-03-08 21:32:07,046 INFO L226 Difference]: Without dead ends: 600 [2025-03-08 21:32:07,047 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-03-08 21:32:07,047 INFO L435 NwaCegarLoop]: 601 mSDtfsCounter, 33 mSDsluCounter, 3393 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3994 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 21:32:07,047 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3994 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1346 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 21:32:07,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2025-03-08 21:32:07,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 571. [2025-03-08 21:32:07,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 548 states have (on average 1.3759124087591241) internal successors, (754), 552 states have internal predecessors, (754), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 21:32:07,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 784 transitions. [2025-03-08 21:32:07,057 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 784 transitions. Word has length 70 [2025-03-08 21:32:07,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:32:07,057 INFO L471 AbstractCegarLoop]: Abstraction has 571 states and 784 transitions. [2025-03-08 21:32:07,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:32:07,058 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 784 transitions. [2025-03-08 21:32:07,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-03-08 21:32:07,058 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:32:07,058 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, 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, 1, 1, 1, 1] [2025-03-08 21:32:07,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-08 21:32:07,059 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2025-03-08 21:32:07,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:32:07,059 INFO L85 PathProgramCache]: Analyzing trace with hash 281698465, now seen corresponding path program 1 times [2025-03-08 21:32:07,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:32:07,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202909456] [2025-03-08 21:32:07,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:32:07,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:32:07,073 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-08 21:32:07,092 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-08 21:32:07,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:32:07,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:32:16,834 WARN L286 SmtUtils]: Spent 5.48s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2025-03-08 21:32:29,136 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (* (div |c_ULTIMATE.start_main_~_hj_j~0#1| 4294967296) 524288)) (.cse0 (div |c_ULTIMATE.start_main_~_hj_j~0#1| 8192))) (and (= .cse0 (+ .cse1 |c_ULTIMATE.start_main_~_ha_hashv~0#1|)) (<= 4408680405129836981 (+ (* 1030789530 |c_ULTIMATE.start_main_~_ha_hashv~0#1|) (* |c_ULTIMATE.start_main_~_hj_j~0#1| 2061579059) (* (div (+ (* (- 4123158118) |c_ULTIMATE.start_main_~_hj_j~0#1|) 8817360810260198248 .cse1 (* (- 2061579059) |c_ULTIMATE.start_main_~_ha_hashv~0#1|) (* (- 1) .cse0)) 4294967296) 2147483648))))) is different from false [2025-03-08 21:32:29,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:32:29,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:32:29,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202909456] [2025-03-08 21:32:29,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202909456] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:32:29,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:32:29,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-08 21:32:29,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854061833] [2025-03-08 21:32:29,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:32:29,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-08 21:32:29,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:32:29,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-08 21:32:29,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=72, Unknown=1, NotChecked=16, Total=110 [2025-03-08 21:32:29,266 INFO L87 Difference]: Start difference. First operand 571 states and 784 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:32:32,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-08 21:32:37,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-08 21:32:41,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-08 21:32:45,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-08 21:32:49,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-08 21:32:53,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-08 21:32:57,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-08 21:33:02,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-08 21:33:06,286 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (div |c_ULTIMATE.start_main_~_hj_j~0#1| 8192)) (.cse3 (* (div |c_ULTIMATE.start_main_~_hj_j~0#1| 4294967296) 524288))) (let ((.cse0 (+ .cse3 |c_ULTIMATE.start_main_~_ha_hashv~0#1|)) (.cse6 (* 1030789530 |c_ULTIMATE.start_main_~_ha_hashv~0#1|)) (.cse7 (* |c_ULTIMATE.start_main_~_hj_j~0#1| 2061579059)) (.cse2 (* (- 4123158118) |c_ULTIMATE.start_main_~_hj_j~0#1|)) (.cse4 (* (- 2061579059) |c_ULTIMATE.start_main_~_ha_hashv~0#1|)) (.cse5 (* (- 1) .cse1))) (and (or (< .cse0 (+ .cse1 (mod |c_ULTIMATE.start_main_~_hj_i~0#1| 4294967296))) (< 4408680405129836980 (+ (* 1030789529 |c_ULTIMATE.start_main_~_hj_i~0#1|) (* 2147483648 (div (+ .cse2 8817360810260198248 (* (- 2061579059) |c_ULTIMATE.start_main_~_hj_i~0#1|) .cse3 .cse4 .cse5) 4294967296)) .cse6 .cse7 (* (div |c_ULTIMATE.start_main_~_hj_i~0#1| 4294967296) 2147483648)))) (= .cse1 .cse0) (<= 4408680405129836981 (+ .cse6 .cse7 (* (div (+ .cse2 8817360810260198248 .cse3 .cse4 .cse5) 4294967296) 2147483648)))))) is different from false [2025-03-08 21:33:10,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []