./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 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_OAT_test6-1.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 ac848265e1daab3ca0f2905a3d0d6fdafaee38399ca7123ad8517babc999ef80 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 10:31:46,661 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 10:31:46,714 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 10:31:46,719 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 10:31:46,719 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 10:31:46,741 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 10:31:46,741 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 10:31:46,742 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 10:31:46,742 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 10:31:46,742 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 10:31:46,743 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 10:31:46,743 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 10:31:46,743 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 10:31:46,743 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 10:31:46,744 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 10:31:46,744 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 10:31:46,744 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 10:31:46,744 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 10:31:46,744 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 10:31:46,744 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 10:31:46,744 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 10:31:46,744 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 10:31:46,744 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 10:31:46,745 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 10:31:46,745 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 10:31:46,745 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 10:31:46,745 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 10:31:46,745 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 10:31:46,745 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 10:31:46,745 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 10:31:46,745 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 10:31:46,745 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 10:31:46,745 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 10:31:46,746 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 10:31:46,746 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 10:31:46,746 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 10:31:46,746 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 10:31:46,746 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 10:31:46,746 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 10:31:46,746 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 10:31:46,746 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 10:31:46,746 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 10:31:46,746 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 10:31:46,746 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 -> ac848265e1daab3ca0f2905a3d0d6fdafaee38399ca7123ad8517babc999ef80 [2025-03-17 10:31:46,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 10:31:46,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 10:31:46,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 10:31:46,977 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 10:31:46,977 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 10:31:46,977 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i [2025-03-17 10:31:48,076 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/461f6b3bd/de5ba68fc5e24ab6b287f7ceff9c3a86/FLAGefa311c9a [2025-03-17 10:31:48,382 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 10:31:48,383 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i [2025-03-17 10:31:48,398 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/461f6b3bd/de5ba68fc5e24ab6b287f7ceff9c3a86/FLAGefa311c9a [2025-03-17 10:31:48,409 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/461f6b3bd/de5ba68fc5e24ab6b287f7ceff9c3a86 [2025-03-17 10:31:48,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 10:31:48,412 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 10:31:48,413 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 10:31:48,413 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 10:31:48,416 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 10:31:48,417 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 10:31:48" (1/1) ... [2025-03-17 10:31:48,418 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@552e9714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:31:48, skipping insertion in model container [2025-03-17 10:31:48,419 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 10:31:48" (1/1) ... [2025-03-17 10:31:48,458 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 10:31:48,832 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_OAT_test6-1.i[44118,44131] [2025-03-17 10:31:48,840 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_OAT_test6-1.i[44660,44673] [2025-03-17 10:31:48,910 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_OAT_test6-1.i[56247,56260] [2025-03-17 10:31:48,910 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_OAT_test6-1.i[56368,56381] [2025-03-17 10:31:48,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 10:31:48,924 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 10:31:48,964 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_OAT_test6-1.i[44118,44131] [2025-03-17 10:31:48,967 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_OAT_test6-1.i[44660,44673] [2025-03-17 10:31:49,010 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_OAT_test6-1.i[56247,56260] [2025-03-17 10:31:49,011 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_OAT_test6-1.i[56368,56381] [2025-03-17 10:31:49,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 10:31:49,057 INFO L204 MainTranslator]: Completed translation [2025-03-17 10:31:49,058 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:31:49 WrapperNode [2025-03-17 10:31:49,058 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 10:31:49,059 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 10:31:49,059 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 10:31:49,059 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 10:31:49,064 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:31:49" (1/1) ... [2025-03-17 10:31:49,087 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:31:49" (1/1) ... [2025-03-17 10:31:49,127 INFO L138 Inliner]: procedures = 282, calls = 296, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1432 [2025-03-17 10:31:49,127 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 10:31:49,128 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 10:31:49,128 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 10:31:49,128 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 10:31:49,136 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:31:49" (1/1) ... [2025-03-17 10:31:49,136 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:31:49" (1/1) ... [2025-03-17 10:31:49,143 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:31:49" (1/1) ... [2025-03-17 10:31:49,204 INFO L175 MemorySlicer]: Split 268 memory accesses to 4 slices as follows [2, 12, 220, 34]. 82 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 10, 0, 0]. The 54 writes are split as follows [0, 1, 49, 4]. [2025-03-17 10:31:49,204 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:31:49" (1/1) ... [2025-03-17 10:31:49,206 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:31:49" (1/1) ... [2025-03-17 10:31:49,236 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:31:49" (1/1) ... [2025-03-17 10:31:49,241 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:31:49" (1/1) ... [2025-03-17 10:31:49,244 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:31:49" (1/1) ... [2025-03-17 10:31:49,246 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:31:49" (1/1) ... [2025-03-17 10:31:49,270 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 10:31:49,274 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 10:31:49,275 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 10:31:49,275 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 10:31:49,275 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:31:49" (1/1) ... [2025-03-17 10:31:49,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 10:31:49,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:31:49,301 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) [2025-03-17 10:31:49,309 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 [2025-03-17 10:31:49,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 10:31:49,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 10:31:49,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 10:31:49,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-17 10:31:49,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-17 10:31:49,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 10:31:49,326 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2025-03-17 10:31:49,326 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2025-03-17 10:31:49,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 10:31:49,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 10:31:49,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 10:31:49,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-17 10:31:49,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 10:31:49,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 10:31:49,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 10:31:49,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 10:31:49,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 10:31:49,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-17 10:31:49,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 10:31:49,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 10:31:49,328 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2025-03-17 10:31:49,328 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2025-03-17 10:31:49,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 10:31:49,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 10:31:49,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 10:31:49,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-17 10:31:49,328 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2025-03-17 10:31:49,328 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2025-03-17 10:31:49,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 10:31:49,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 10:31:49,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 10:31:49,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-17 10:31:49,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 10:31:49,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 10:31:49,516 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 10:31:49,518 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 10:31:49,574 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L955: havoc #t~malloc32.base, #t~malloc32.offset; [2025-03-17 10:31:50,591 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L969: havoc alt_memcmp_#t~nondet36#1; [2025-03-17 10:31:50,591 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L979: havoc real_malloc_#t~malloc39#1.base, real_malloc_#t~malloc39#1.offset; [2025-03-17 10:31:50,591 INFO L1322 $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; [2025-03-17 10:31:50,664 INFO L? ?]: Removed 329 outVars from TransFormulas that were not future-live. [2025-03-17 10:31:50,664 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 10:31:50,715 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 10:31:50,715 INFO L336 CfgBuilder]: Removed 1 assume(true) statements. [2025-03-17 10:31:50,716 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 10:31:50 BoogieIcfgContainer [2025-03-17 10:31:50,716 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 10:31:50,717 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 10:31:50,718 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 10:31:50,721 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 10:31:50,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 10:31:48" (1/3) ... [2025-03-17 10:31:50,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395cb623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 10:31:50, skipping insertion in model container [2025-03-17 10:31:50,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:31:49" (2/3) ... [2025-03-17 10:31:50,722 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@395cb623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 10:31:50, skipping insertion in model container [2025-03-17 10:31:50,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 10:31:50" (3/3) ... [2025-03-17 10:31:50,723 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test6-1.i [2025-03-17 10:31:50,734 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 10:31:50,736 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_OAT_test6-1.i that has 5 procedures, 426 locations, 1 initial locations, 34 loop locations, and 4 error locations. [2025-03-17 10:31:50,783 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:31:50,790 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;@2b0da3b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:31:50,790 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-03-17 10:31:50,794 INFO L276 IsEmpty]: Start isEmpty. Operand has 426 states, 404 states have (on average 1.599009900990099) internal successors, (646), 408 states have internal predecessors, (646), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2025-03-17 10:31:50,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-17 10:31:50,797 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:31:50,798 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:31:50,798 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)] === [2025-03-17 10:31:50,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:31:50,801 INFO L85 PathProgramCache]: Analyzing trace with hash -611902627, now seen corresponding path program 1 times [2025-03-17 10:31:50,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:31:50,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645949564] [2025-03-17 10:31:50,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:31:50,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:31:50,871 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 10:31:50,885 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 10:31:50,885 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:31:50,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:31:50,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:31:50,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:31:50,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645949564] [2025-03-17 10:31:50,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645949564] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:31:50,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:31:50,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 10:31:50,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154601545] [2025-03-17 10:31:50,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:31:50,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 10:31:50,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:31:50,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 10:31:50,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 10:31:50,973 INFO L87 Difference]: Start difference. First operand has 426 states, 404 states have (on average 1.599009900990099) internal successors, (646), 408 states have internal predecessors, (646), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2025-03-17 10:31:51,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:31:51,093 INFO L93 Difference]: Finished difference Result 849 states and 1354 transitions. [2025-03-17 10:31:51,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 10:31:51,095 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2025-03-17 10:31:51,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:31:51,103 INFO L225 Difference]: With dead ends: 849 [2025-03-17 10:31:51,104 INFO L226 Difference]: Without dead ends: 420 [2025-03-17 10:31:51,107 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 [2025-03-17 10:31:51,112 INFO L435 NwaCegarLoop]: 563 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 10:31:51,112 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 563 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 10:31:51,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2025-03-17 10:31:51,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2025-03-17 10:31:51,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 399 states have (on average 1.443609022556391) internal successors, (576), 404 states have internal predecessors, (576), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-17 10:31:51,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 601 transitions. [2025-03-17 10:31:51,166 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 601 transitions. Word has length 7 [2025-03-17 10:31:51,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:31:51,166 INFO L471 AbstractCegarLoop]: Abstraction has 420 states and 601 transitions. [2025-03-17 10:31:51,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2025-03-17 10:31:51,167 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 601 transitions. [2025-03-17 10:31:51,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-17 10:31:51,167 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:31:51,167 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:31:51,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 10:31:51,168 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)] === [2025-03-17 10:31:51,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:31:51,169 INFO L85 PathProgramCache]: Analyzing trace with hash -672684682, now seen corresponding path program 1 times [2025-03-17 10:31:51,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:31:51,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651358628] [2025-03-17 10:31:51,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:31:51,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:31:51,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 10:31:51,200 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 10:31:51,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:31:51,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:31:51,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:31:51,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:31:51,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651358628] [2025-03-17 10:31:51,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651358628] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:31:51,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:31:51,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 10:31:51,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11201608] [2025-03-17 10:31:51,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:31:51,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 10:31:51,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:31:51,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 10:31:51,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 10:31:51,336 INFO L87 Difference]: Start difference. First operand 420 states and 601 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2025-03-17 10:31:51,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:31:51,617 INFO L93 Difference]: Finished difference Result 1024 states and 1475 transitions. [2025-03-17 10:31:51,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 10:31:51,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2025-03-17 10:31:51,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:31:51,625 INFO L225 Difference]: With dead ends: 1024 [2025-03-17 10:31:51,625 INFO L226 Difference]: Without dead ends: 815 [2025-03-17 10:31:51,626 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 10:31:51,628 INFO L435 NwaCegarLoop]: 541 mSDtfsCounter, 551 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 10:31:51,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 1607 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 10:31:51,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2025-03-17 10:31:51,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 422. [2025-03-17 10:31:51,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 401 states have (on average 1.4413965087281795) internal successors, (578), 406 states have internal predecessors, (578), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-17 10:31:51,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 603 transitions. [2025-03-17 10:31:51,662 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 603 transitions. Word has length 9 [2025-03-17 10:31:51,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:31:51,662 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 603 transitions. [2025-03-17 10:31:51,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2025-03-17 10:31:51,662 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 603 transitions. [2025-03-17 10:31:51,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-17 10:31:51,664 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:31:51,664 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] [2025-03-17 10:31:51,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 10:31:51,664 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)] === [2025-03-17 10:31:51,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:31:51,664 INFO L85 PathProgramCache]: Analyzing trace with hash -198173675, now seen corresponding path program 1 times [2025-03-17 10:31:51,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:31:51,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584094158] [2025-03-17 10:31:51,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:31:51,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:31:51,694 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-17 10:31:51,717 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-17 10:31:51,717 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:31:51,717 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:31:51,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:31:51,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:31:51,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584094158] [2025-03-17 10:31:51,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584094158] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:31:51,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:31:51,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 10:31:51,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63986812] [2025-03-17 10:31:51,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:31:51,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 10:31:51,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:31:51,906 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 10:31:51,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 10:31:51,906 INFO L87 Difference]: Start difference. First operand 422 states and 603 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2025-03-17 10:31:52,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:31:52,049 INFO L93 Difference]: Finished difference Result 844 states and 1206 transitions. [2025-03-17 10:31:52,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 10:31:52,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 63 [2025-03-17 10:31:52,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:31:52,052 INFO L225 Difference]: With dead ends: 844 [2025-03-17 10:31:52,054 INFO L226 Difference]: Without dead ends: 425 [2025-03-17 10:31:52,055 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 [2025-03-17 10:31:52,056 INFO L435 NwaCegarLoop]: 532 mSDtfsCounter, 105 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 10:31:52,056 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1512 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 10:31:52,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2025-03-17 10:31:52,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 422. [2025-03-17 10:31:52,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 401 states have (on average 1.4239401496259352) internal successors, (571), 406 states have internal predecessors, (571), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-17 10:31:52,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 596 transitions. [2025-03-17 10:31:52,077 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 596 transitions. Word has length 63 [2025-03-17 10:31:52,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:31:52,079 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 596 transitions. [2025-03-17 10:31:52,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2025-03-17 10:31:52,079 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 596 transitions. [2025-03-17 10:31:52,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-17 10:31:52,081 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:31:52,081 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] [2025-03-17 10:31:52,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 10:31:52,082 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)] === [2025-03-17 10:31:52,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:31:52,082 INFO L85 PathProgramCache]: Analyzing trace with hash -345921234, now seen corresponding path program 1 times [2025-03-17 10:31:52,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:31:52,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072453275] [2025-03-17 10:31:52,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:31:52,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:31:52,114 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-17 10:31:52,166 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-17 10:31:52,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:31:52,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:31:52,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:31:52,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:31:52,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072453275] [2025-03-17 10:31:52,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072453275] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:31:52,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:31:52,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 10:31:52,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166813873] [2025-03-17 10:31:52,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:31:52,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 10:31:52,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:31:52,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 10:31:52,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 10:31:52,529 INFO L87 Difference]: Start difference. First operand 422 states and 596 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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) [2025-03-17 10:31:53,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:31:53,101 INFO L93 Difference]: Finished difference Result 875 states and 1234 transitions. [2025-03-17 10:31:53,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 10:31:53,103 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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 63 [2025-03-17 10:31:53,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:31:53,105 INFO L225 Difference]: With dead ends: 875 [2025-03-17 10:31:53,105 INFO L226 Difference]: Without dead ends: 456 [2025-03-17 10:31:53,105 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 [2025-03-17 10:31:53,106 INFO L435 NwaCegarLoop]: 538 mSDtfsCounter, 14 mSDsluCounter, 1677 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2215 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 10:31:53,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2215 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 10:31:53,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2025-03-17 10:31:53,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 449. [2025-03-17 10:31:53,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 428 states have (on average 1.411214953271028) internal successors, (604), 433 states have internal predecessors, (604), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-17 10:31:53,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 629 transitions. [2025-03-17 10:31:53,120 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 629 transitions. Word has length 63 [2025-03-17 10:31:53,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:31:53,121 INFO L471 AbstractCegarLoop]: Abstraction has 449 states and 629 transitions. [2025-03-17 10:31:53,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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) [2025-03-17 10:31:53,121 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 629 transitions. [2025-03-17 10:31:53,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-17 10:31:53,124 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:31:53,124 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] [2025-03-17 10:31:53,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 10:31:53,125 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)] === [2025-03-17 10:31:53,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:31:53,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1991068577, now seen corresponding path program 1 times [2025-03-17 10:31:53,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:31:53,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79909698] [2025-03-17 10:31:53,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:31:53,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:31:53,146 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-17 10:31:53,173 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-17 10:31:53,174 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:31:53,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:31:53,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:31:53,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:31:53,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79909698] [2025-03-17 10:31:53,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79909698] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:31:53,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:31:53,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 10:31:53,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854753962] [2025-03-17 10:31:53,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:31:53,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 10:31:53,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:31:53,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 10:31:53,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 10:31:53,400 INFO L87 Difference]: Start difference. First operand 449 states and 629 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) [2025-03-17 10:31:53,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:31:53,607 INFO L93 Difference]: Finished difference Result 904 states and 1269 transitions. [2025-03-17 10:31:53,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 10:31:53,609 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 [2025-03-17 10:31:53,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:31:53,612 INFO L225 Difference]: With dead ends: 904 [2025-03-17 10:31:53,612 INFO L226 Difference]: Without dead ends: 458 [2025-03-17 10:31:53,612 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 [2025-03-17 10:31:53,613 INFO L435 NwaCegarLoop]: 543 mSDtfsCounter, 17 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1465 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 10:31:53,613 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1465 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 10:31:53,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2025-03-17 10:31:53,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 450. [2025-03-17 10:31:53,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 429 states have (on average 1.4102564102564104) internal successors, (605), 434 states have internal predecessors, (605), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-17 10:31:53,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 630 transitions. [2025-03-17 10:31:53,627 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 630 transitions. Word has length 64 [2025-03-17 10:31:53,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:31:53,627 INFO L471 AbstractCegarLoop]: Abstraction has 450 states and 630 transitions. [2025-03-17 10:31:53,628 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) [2025-03-17 10:31:53,628 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 630 transitions. [2025-03-17 10:31:53,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-03-17 10:31:53,630 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:31:53,631 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] [2025-03-17 10:31:53,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 10:31:53,631 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)] === [2025-03-17 10:31:53,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:31:53,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1137888024, now seen corresponding path program 1 times [2025-03-17 10:31:53,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:31:53,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289673670] [2025-03-17 10:31:53,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:31:53,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:31:53,658 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-17 10:31:53,677 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-17 10:31:53,679 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:31:53,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:31:53,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:31:53,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:31:53,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289673670] [2025-03-17 10:31:53,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289673670] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:31:53,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:31:53,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 10:31:53,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117136838] [2025-03-17 10:31:53,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:31:53,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 10:31:53,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:31:53,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 10:31:53,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-17 10:31:53,851 INFO L87 Difference]: Start difference. First operand 450 states and 630 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 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) [2025-03-17 10:31:54,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:31:54,341 INFO L93 Difference]: Finished difference Result 909 states and 1276 transitions. [2025-03-17 10:31:54,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 10:31:54,341 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 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 [2025-03-17 10:31:54,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:31:54,343 INFO L225 Difference]: With dead ends: 909 [2025-03-17 10:31:54,344 INFO L226 Difference]: Without dead ends: 462 [2025-03-17 10:31:54,344 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 [2025-03-17 10:31:54,345 INFO L435 NwaCegarLoop]: 534 mSDtfsCounter, 14 mSDsluCounter, 2128 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2662 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 10:31:54,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2662 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 10:31:54,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2025-03-17 10:31:54,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 459. [2025-03-17 10:31:54,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 438 states have (on average 1.4109589041095891) internal successors, (618), 443 states have internal predecessors, (618), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-17 10:31:54,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 643 transitions. [2025-03-17 10:31:54,363 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 643 transitions. Word has length 64 [2025-03-17 10:31:54,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:31:54,363 INFO L471 AbstractCegarLoop]: Abstraction has 459 states and 643 transitions. [2025-03-17 10:31:54,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 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) [2025-03-17 10:31:54,363 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 643 transitions. [2025-03-17 10:31:54,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-17 10:31:54,364 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:31:54,364 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] [2025-03-17 10:31:54,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 10:31:54,364 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)] === [2025-03-17 10:31:54,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:31:54,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1499349009, now seen corresponding path program 1 times [2025-03-17 10:31:54,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:31:54,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956886369] [2025-03-17 10:31:54,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:31:54,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:31:54,380 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-17 10:31:54,391 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-17 10:31:54,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:31:54,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:31:54,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:31:54,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:31:54,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956886369] [2025-03-17 10:31:54,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956886369] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:31:54,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:31:54,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 10:31:54,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135371200] [2025-03-17 10:31:54,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:31:54,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 10:31:54,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:31:54,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 10:31:54,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 10:31:54,554 INFO L87 Difference]: Start difference. First operand 459 states and 643 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 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) [2025-03-17 10:31:54,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:31:54,972 INFO L93 Difference]: Finished difference Result 918 states and 1288 transitions. [2025-03-17 10:31:54,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 10:31:54,973 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 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 [2025-03-17 10:31:54,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:31:54,975 INFO L225 Difference]: With dead ends: 918 [2025-03-17 10:31:54,975 INFO L226 Difference]: Without dead ends: 462 [2025-03-17 10:31:54,976 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 [2025-03-17 10:31:54,976 INFO L435 NwaCegarLoop]: 544 mSDtfsCounter, 8 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2244 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 10:31:54,976 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2244 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 10:31:54,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2025-03-17 10:31:54,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 462. [2025-03-17 10:31:54,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 441 states have (on average 1.4081632653061225) internal successors, (621), 446 states have internal predecessors, (621), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-17 10:31:54,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 646 transitions. [2025-03-17 10:31:54,987 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 646 transitions. Word has length 65 [2025-03-17 10:31:54,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:31:54,987 INFO L471 AbstractCegarLoop]: Abstraction has 462 states and 646 transitions. [2025-03-17 10:31:54,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 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) [2025-03-17 10:31:54,987 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 646 transitions. [2025-03-17 10:31:54,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-17 10:31:54,988 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:31:54,988 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] [2025-03-17 10:31:54,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 10:31:54,988 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)] === [2025-03-17 10:31:54,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:31:54,988 INFO L85 PathProgramCache]: Analyzing trace with hash -168120459, now seen corresponding path program 1 times [2025-03-17 10:31:54,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:31:54,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566828792] [2025-03-17 10:31:54,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:31:54,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:31:55,005 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-17 10:31:55,023 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-17 10:31:55,023 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:31:55,023 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:31:55,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:31:55,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:31:55,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566828792] [2025-03-17 10:31:55,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566828792] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:31:55,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:31:55,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-17 10:31:55,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721109405] [2025-03-17 10:31:55,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:31:55,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 10:31:55,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:31:55,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 10:31:55,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-17 10:31:55,279 INFO L87 Difference]: Start difference. First operand 462 states and 646 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 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) [2025-03-17 10:31:56,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:31:56,008 INFO L93 Difference]: Finished difference Result 937 states and 1314 transitions. [2025-03-17 10:31:56,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 10:31:56,008 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 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 [2025-03-17 10:31:56,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:31:56,010 INFO L225 Difference]: With dead ends: 937 [2025-03-17 10:31:56,011 INFO L226 Difference]: Without dead ends: 478 [2025-03-17 10:31:56,011 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 [2025-03-17 10:31:56,012 INFO L435 NwaCegarLoop]: 535 mSDtfsCounter, 33 mSDsluCounter, 3087 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3622 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-17 10:31:56,012 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3622 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-17 10:31:56,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2025-03-17 10:31:56,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 472. [2025-03-17 10:31:56,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 451 states have (on average 1.4079822616407982) internal successors, (635), 456 states have internal predecessors, (635), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-17 10:31:56,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 660 transitions. [2025-03-17 10:31:56,022 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 660 transitions. Word has length 65 [2025-03-17 10:31:56,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:31:56,022 INFO L471 AbstractCegarLoop]: Abstraction has 472 states and 660 transitions. [2025-03-17 10:31:56,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 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) [2025-03-17 10:31:56,022 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 660 transitions. [2025-03-17 10:31:56,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-03-17 10:31:56,023 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:31:56,023 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] [2025-03-17 10:31:56,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 10:31:56,023 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)] === [2025-03-17 10:31:56,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:31:56,024 INFO L85 PathProgramCache]: Analyzing trace with hash 751414705, now seen corresponding path program 1 times [2025-03-17 10:31:56,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:31:56,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580238162] [2025-03-17 10:31:56,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:31:56,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:31:56,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 65 statements into 1 equivalence classes. [2025-03-17 10:31:56,059 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 65 of 65 statements. [2025-03-17 10:31:56,060 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:31:56,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:31:56,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:31:56,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:31:56,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580238162] [2025-03-17 10:31:56,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580238162] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:31:56,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:31:56,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 10:31:56,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347033160] [2025-03-17 10:31:56,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:31:56,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 10:31:56,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:31:56,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 10:31:56,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-17 10:31:56,308 INFO L87 Difference]: Start difference. First operand 472 states and 660 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 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) [2025-03-17 10:31:56,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:31:56,828 INFO L93 Difference]: Finished difference Result 947 states and 1326 transitions. [2025-03-17 10:31:56,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 10:31:56,828 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 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 [2025-03-17 10:31:56,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:31:56,831 INFO L225 Difference]: With dead ends: 947 [2025-03-17 10:31:56,831 INFO L226 Difference]: Without dead ends: 478 [2025-03-17 10:31:56,832 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 [2025-03-17 10:31:56,832 INFO L435 NwaCegarLoop]: 538 mSDtfsCounter, 27 mSDsluCounter, 2221 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2759 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 10:31:56,832 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2759 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 10:31:56,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2025-03-17 10:31:56,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 475. [2025-03-17 10:31:56,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 454 states have (on average 1.4052863436123348) internal successors, (638), 459 states have internal predecessors, (638), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-17 10:31:56,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 663 transitions. [2025-03-17 10:31:56,845 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 663 transitions. Word has length 65 [2025-03-17 10:31:56,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:31:56,845 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 663 transitions. [2025-03-17 10:31:56,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 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) [2025-03-17 10:31:56,846 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 663 transitions. [2025-03-17 10:31:56,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-17 10:31:56,846 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:31:56,847 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] [2025-03-17 10:31:56,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 10:31:56,847 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)] === [2025-03-17 10:31:56,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:31:56,848 INFO L85 PathProgramCache]: Analyzing trace with hash -745704472, now seen corresponding path program 1 times [2025-03-17 10:31:56,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:31:56,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146799947] [2025-03-17 10:31:56,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:31:56,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:31:56,865 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-17 10:31:56,885 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-17 10:31:56,885 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:31:56,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:31:57,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:31:57,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:31:57,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146799947] [2025-03-17 10:31:57,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146799947] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:31:57,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:31:57,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 10:31:57,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286417972] [2025-03-17 10:31:57,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:31:57,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 10:31:57,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:31:57,049 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 10:31:57,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-17 10:31:57,049 INFO L87 Difference]: Start difference. First operand 475 states and 663 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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) [2025-03-17 10:31:57,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:31:57,561 INFO L93 Difference]: Finished difference Result 954 states and 1334 transitions. [2025-03-17 10:31:57,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 10:31:57,562 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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 [2025-03-17 10:31:57,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:31:57,564 INFO L225 Difference]: With dead ends: 954 [2025-03-17 10:31:57,564 INFO L226 Difference]: Without dead ends: 482 [2025-03-17 10:31:57,565 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 [2025-03-17 10:31:57,565 INFO L435 NwaCegarLoop]: 537 mSDtfsCounter, 12 mSDsluCounter, 2128 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2665 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 10:31:57,566 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2665 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 10:31:57,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2025-03-17 10:31:57,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 475. [2025-03-17 10:31:57,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 454 states have (on average 1.4052863436123348) internal successors, (638), 459 states have internal predecessors, (638), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-17 10:31:57,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 663 transitions. [2025-03-17 10:31:57,576 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 663 transitions. Word has length 66 [2025-03-17 10:31:57,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:31:57,576 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 663 transitions. [2025-03-17 10:31:57,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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) [2025-03-17 10:31:57,576 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 663 transitions. [2025-03-17 10:31:57,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-17 10:31:57,577 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:31:57,577 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] [2025-03-17 10:31:57,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 10:31:57,577 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)] === [2025-03-17 10:31:57,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:31:57,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1173549674, now seen corresponding path program 1 times [2025-03-17 10:31:57,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:31:57,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774658975] [2025-03-17 10:31:57,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:31:57,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:31:57,595 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-17 10:31:57,634 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-17 10:31:57,634 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:31:57,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:31:57,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:31:57,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:31:57,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774658975] [2025-03-17 10:31:57,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774658975] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:31:57,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:31:57,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 10:31:57,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691166142] [2025-03-17 10:31:57,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:31:57,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 10:31:57,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:31:57,953 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 10:31:57,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-17 10:31:57,953 INFO L87 Difference]: Start difference. First operand 475 states and 663 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) 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) [2025-03-17 10:31:59,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:31:59,004 INFO L93 Difference]: Finished difference Result 1398 states and 1964 transitions. [2025-03-17 10:31:59,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 10:31:59,009 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) 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 [2025-03-17 10:31:59,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:31:59,014 INFO L225 Difference]: With dead ends: 1398 [2025-03-17 10:31:59,014 INFO L226 Difference]: Without dead ends: 926 [2025-03-17 10:31:59,015 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2025-03-17 10:31:59,016 INFO L435 NwaCegarLoop]: 529 mSDtfsCounter, 852 mSDsluCounter, 2578 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 3107 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-17 10:31:59,016 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 3107 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-17 10:31:59,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2025-03-17 10:31:59,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 505. [2025-03-17 10:31:59,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 484 states have (on average 1.390495867768595) internal successors, (673), 489 states have internal predecessors, (673), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-17 10:31:59,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 698 transitions. [2025-03-17 10:31:59,032 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 698 transitions. Word has length 66 [2025-03-17 10:31:59,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:31:59,032 INFO L471 AbstractCegarLoop]: Abstraction has 505 states and 698 transitions. [2025-03-17 10:31:59,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) 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) [2025-03-17 10:31:59,033 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 698 transitions. [2025-03-17 10:31:59,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-17 10:31:59,033 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:31:59,033 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] [2025-03-17 10:31:59,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 10:31:59,033 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)] === [2025-03-17 10:31:59,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:31:59,034 INFO L85 PathProgramCache]: Analyzing trace with hash -895332235, now seen corresponding path program 1 times [2025-03-17 10:31:59,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:31:59,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715914401] [2025-03-17 10:31:59,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:31:59,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:31:59,051 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-17 10:31:59,067 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-17 10:31:59,067 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:31:59,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:31:59,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:31:59,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:31:59,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715914401] [2025-03-17 10:31:59,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715914401] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:31:59,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:31:59,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-17 10:31:59,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770899255] [2025-03-17 10:31:59,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:31:59,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 10:31:59,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:31:59,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 10:31:59,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-17 10:31:59,241 INFO L87 Difference]: Start difference. First operand 505 states and 698 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) [2025-03-17 10:31:59,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:31:59,919 INFO L93 Difference]: Finished difference Result 1005 states and 1397 transitions. [2025-03-17 10:31:59,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 10:31:59,920 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 [2025-03-17 10:31:59,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:31:59,922 INFO L225 Difference]: With dead ends: 1005 [2025-03-17 10:31:59,922 INFO L226 Difference]: Without dead ends: 533 [2025-03-17 10:31:59,923 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 [2025-03-17 10:31:59,924 INFO L435 NwaCegarLoop]: 536 mSDtfsCounter, 37 mSDsluCounter, 2999 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3535 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 10:31:59,924 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3535 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 10:31:59,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2025-03-17 10:31:59,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 508. [2025-03-17 10:31:59,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 487 states have (on average 1.3901437371663243) internal successors, (677), 492 states have internal predecessors, (677), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-17 10:31:59,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 702 transitions. [2025-03-17 10:31:59,935 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 702 transitions. Word has length 67 [2025-03-17 10:31:59,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:31:59,935 INFO L471 AbstractCegarLoop]: Abstraction has 508 states and 702 transitions. [2025-03-17 10:31:59,936 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) [2025-03-17 10:31:59,936 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 702 transitions. [2025-03-17 10:31:59,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-03-17 10:31:59,936 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:31:59,936 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] [2025-03-17 10:31:59,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 10:31:59,937 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)] === [2025-03-17 10:31:59,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:31:59,937 INFO L85 PathProgramCache]: Analyzing trace with hash -684910184, now seen corresponding path program 1 times [2025-03-17 10:31:59,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:31:59,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227097404] [2025-03-17 10:31:59,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:31:59,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:31:59,952 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-17 10:31:59,963 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-17 10:31:59,963 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:31:59,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:32:00,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:32:00,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:32:00,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227097404] [2025-03-17 10:32:00,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227097404] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:32:00,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:32:00,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-17 10:32:00,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834127839] [2025-03-17 10:32:00,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:32:00,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 10:32:00,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:32:00,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 10:32:00,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-17 10:32:00,108 INFO L87 Difference]: Start difference. First operand 508 states and 702 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) [2025-03-17 10:32:00,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:32:00,633 INFO L93 Difference]: Finished difference Result 996 states and 1384 transitions. [2025-03-17 10:32:00,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 10:32:00,634 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 [2025-03-17 10:32:00,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:32:00,636 INFO L225 Difference]: With dead ends: 996 [2025-03-17 10:32:00,636 INFO L226 Difference]: Without dead ends: 521 [2025-03-17 10:32:00,636 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 [2025-03-17 10:32:00,637 INFO L435 NwaCegarLoop]: 544 mSDtfsCounter, 20 mSDsluCounter, 2674 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 3218 SdHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 10:32:00,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 3218 Invalid, 1062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 10:32:00,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2025-03-17 10:32:00,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 508. [2025-03-17 10:32:00,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 487 states have (on average 1.3901437371663243) internal successors, (677), 492 states have internal predecessors, (677), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-17 10:32:00,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 702 transitions. [2025-03-17 10:32:00,650 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 702 transitions. Word has length 67 [2025-03-17 10:32:00,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:32:00,650 INFO L471 AbstractCegarLoop]: Abstraction has 508 states and 702 transitions. [2025-03-17 10:32:00,651 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) [2025-03-17 10:32:00,651 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 702 transitions. [2025-03-17 10:32:00,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-17 10:32:00,653 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:32:00,653 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] [2025-03-17 10:32:00,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-17 10:32:00,654 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)] === [2025-03-17 10:32:00,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:32:00,655 INFO L85 PathProgramCache]: Analyzing trace with hash 807840335, now seen corresponding path program 1 times [2025-03-17 10:32:00,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:32:00,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635006560] [2025-03-17 10:32:00,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:32:00,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:32:00,672 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-17 10:32:00,697 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 10:32:00,698 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:32:00,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:32:00,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:32:00,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:32:00,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635006560] [2025-03-17 10:32:00,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635006560] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:32:00,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:32:00,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 10:32:00,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485292539] [2025-03-17 10:32:00,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:32:00,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 10:32:00,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:32:00,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 10:32:00,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-17 10:32:00,885 INFO L87 Difference]: Start difference. First operand 508 states and 702 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 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) [2025-03-17 10:32:01,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:32:01,607 INFO L93 Difference]: Finished difference Result 1004 states and 1396 transitions. [2025-03-17 10:32:01,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 10:32:01,608 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 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 [2025-03-17 10:32:01,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:32:01,610 INFO L225 Difference]: With dead ends: 1004 [2025-03-17 10:32:01,610 INFO L226 Difference]: Without dead ends: 529 [2025-03-17 10:32:01,610 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 [2025-03-17 10:32:01,611 INFO L435 NwaCegarLoop]: 525 mSDtfsCounter, 17 mSDsluCounter, 3447 mSDsCounter, 0 mSdLazyCounter, 1399 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 3972 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-17 10:32:01,611 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 3972 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1399 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-17 10:32:01,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2025-03-17 10:32:01,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 521. [2025-03-17 10:32:01,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 500 states have (on average 1.388) internal successors, (694), 505 states have internal predecessors, (694), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-17 10:32:01,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 719 transitions. [2025-03-17 10:32:01,622 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 719 transitions. Word has length 68 [2025-03-17 10:32:01,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:32:01,622 INFO L471 AbstractCegarLoop]: Abstraction has 521 states and 719 transitions. [2025-03-17 10:32:01,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 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) [2025-03-17 10:32:01,622 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 719 transitions. [2025-03-17 10:32:01,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-17 10:32:01,623 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:32:01,623 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] [2025-03-17 10:32:01,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-17 10:32:01,623 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)] === [2025-03-17 10:32:01,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:32:01,624 INFO L85 PathProgramCache]: Analyzing trace with hash -2107722833, now seen corresponding path program 1 times [2025-03-17 10:32:01,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:32:01,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234043704] [2025-03-17 10:32:01,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:32:01,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:32:01,639 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-17 10:32:01,666 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 10:32:01,666 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:32:01,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:32:01,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:32:01,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:32:01,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234043704] [2025-03-17 10:32:01,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234043704] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:32:01,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:32:01,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 10:32:01,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673120031] [2025-03-17 10:32:01,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:32:01,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 10:32:01,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:32:01,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 10:32:01,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-17 10:32:01,833 INFO L87 Difference]: Start difference. First operand 521 states and 719 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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) [2025-03-17 10:32:02,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:32:02,310 INFO L93 Difference]: Finished difference Result 1013 states and 1405 transitions. [2025-03-17 10:32:02,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 10:32:02,311 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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 [2025-03-17 10:32:02,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:32:02,313 INFO L225 Difference]: With dead ends: 1013 [2025-03-17 10:32:02,313 INFO L226 Difference]: Without dead ends: 525 [2025-03-17 10:32:02,314 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 [2025-03-17 10:32:02,314 INFO L435 NwaCegarLoop]: 540 mSDtfsCounter, 11 mSDsluCounter, 2167 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2707 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 10:32:02,314 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2707 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 10:32:02,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2025-03-17 10:32:02,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 518. [2025-03-17 10:32:02,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 497 states have (on average 1.386317907444668) internal successors, (689), 502 states have internal predecessors, (689), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-17 10:32:02,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 714 transitions. [2025-03-17 10:32:02,356 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 714 transitions. Word has length 68 [2025-03-17 10:32:02,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:32:02,356 INFO L471 AbstractCegarLoop]: Abstraction has 518 states and 714 transitions. [2025-03-17 10:32:02,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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) [2025-03-17 10:32:02,356 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 714 transitions. [2025-03-17 10:32:02,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-17 10:32:02,357 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:32:02,357 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] [2025-03-17 10:32:02,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-17 10:32:02,358 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)] === [2025-03-17 10:32:02,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:32:02,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1188187669, now seen corresponding path program 1 times [2025-03-17 10:32:02,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:32:02,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354216148] [2025-03-17 10:32:02,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:32:02,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:32:02,374 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-17 10:32:02,391 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-17 10:32:02,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:32:02,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:32:02,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:32:02,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:32:02,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354216148] [2025-03-17 10:32:02,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354216148] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:32:02,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:32:02,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 10:32:02,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817557841] [2025-03-17 10:32:02,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:32:02,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 10:32:02,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:32:02,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 10:32:02,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-17 10:32:02,555 INFO L87 Difference]: Start difference. First operand 518 states and 714 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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) [2025-03-17 10:32:03,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:32:03,066 INFO L93 Difference]: Finished difference Result 1008 states and 1398 transitions. [2025-03-17 10:32:03,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 10:32:03,066 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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 [2025-03-17 10:32:03,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:32:03,068 INFO L225 Difference]: With dead ends: 1008 [2025-03-17 10:32:03,068 INFO L226 Difference]: Without dead ends: 523 [2025-03-17 10:32:03,069 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 [2025-03-17 10:32:03,070 INFO L435 NwaCegarLoop]: 539 mSDtfsCounter, 8 mSDsluCounter, 2096 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 10:32:03,070 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2635 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 10:32:03,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2025-03-17 10:32:03,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 522. [2025-03-17 10:32:03,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 501 states have (on average 1.3852295409181636) internal successors, (694), 506 states have internal predecessors, (694), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-17 10:32:03,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 719 transitions. [2025-03-17 10:32:03,083 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 719 transitions. Word has length 68 [2025-03-17 10:32:03,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:32:03,083 INFO L471 AbstractCegarLoop]: Abstraction has 522 states and 719 transitions. [2025-03-17 10:32:03,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 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) [2025-03-17 10:32:03,084 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 719 transitions. [2025-03-17 10:32:03,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-17 10:32:03,085 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:32:03,086 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] [2025-03-17 10:32:03,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-17 10:32:03,086 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)] === [2025-03-17 10:32:03,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:32:03,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1920470134, now seen corresponding path program 1 times [2025-03-17 10:32:03,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:32:03,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216330981] [2025-03-17 10:32:03,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:32:03,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:32:03,101 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-17 10:32:03,119 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-17 10:32:03,119 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:32:03,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:32:03,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:32:03,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:32:03,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216330981] [2025-03-17 10:32:03,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216330981] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:32:03,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:32:03,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 10:32:03,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580428113] [2025-03-17 10:32:03,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:32:03,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 10:32:03,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:32:03,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 10:32:03,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-17 10:32:03,438 INFO L87 Difference]: Start difference. First operand 522 states and 719 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) [2025-03-17 10:32:07,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.53s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-17 10:32:07,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:32:07,973 INFO L93 Difference]: Finished difference Result 1033 states and 1429 transitions. [2025-03-17 10:32:07,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 10:32:07,973 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 [2025-03-17 10:32:07,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:32:07,975 INFO L225 Difference]: With dead ends: 1033 [2025-03-17 10:32:07,975 INFO L226 Difference]: Without dead ends: 544 [2025-03-17 10:32:07,976 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 [2025-03-17 10:32:07,976 INFO L435 NwaCegarLoop]: 536 mSDtfsCounter, 44 mSDsluCounter, 2968 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3504 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2025-03-17 10:32:07,976 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3504 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2025-03-17 10:32:07,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2025-03-17 10:32:07,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 519. [2025-03-17 10:32:07,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 498 states have (on average 1.3835341365461848) internal successors, (689), 503 states have internal predecessors, (689), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-17 10:32:07,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 714 transitions. [2025-03-17 10:32:07,988 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 714 transitions. Word has length 69 [2025-03-17 10:32:07,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:32:07,988 INFO L471 AbstractCegarLoop]: Abstraction has 519 states and 714 transitions. [2025-03-17 10:32:07,988 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) [2025-03-17 10:32:07,988 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 714 transitions. [2025-03-17 10:32:07,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-17 10:32:07,989 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:32:07,989 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] [2025-03-17 10:32:07,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-17 10:32:07,989 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)] === [2025-03-17 10:32:07,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:32:07,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1274300868, now seen corresponding path program 1 times [2025-03-17 10:32:07,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:32:07,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845112664] [2025-03-17 10:32:07,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:32:07,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:32:08,005 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-17 10:32:08,017 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-17 10:32:08,018 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:32:08,018 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:32:08,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:32:08,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:32:08,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845112664] [2025-03-17 10:32:08,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845112664] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:32:08,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:32:08,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-17 10:32:08,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098110284] [2025-03-17 10:32:08,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:32:08,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 10:32:08,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:32:08,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 10:32:08,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-03-17 10:32:08,205 INFO L87 Difference]: Start difference. First operand 519 states and 714 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 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) [2025-03-17 10:32:08,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:32:08,862 INFO L93 Difference]: Finished difference Result 1022 states and 1413 transitions. [2025-03-17 10:32:08,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 10:32:08,863 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 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 [2025-03-17 10:32:08,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:32:08,865 INFO L225 Difference]: With dead ends: 1022 [2025-03-17 10:32:08,865 INFO L226 Difference]: Without dead ends: 536 [2025-03-17 10:32:08,866 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 [2025-03-17 10:32:08,866 INFO L435 NwaCegarLoop]: 532 mSDtfsCounter, 40 mSDsluCounter, 3493 mSDsCounter, 0 mSdLazyCounter, 1401 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 4025 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 10:32:08,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 4025 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1401 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 10:32:08,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2025-03-17 10:32:08,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 525. [2025-03-17 10:32:08,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 504 states have (on average 1.380952380952381) internal successors, (696), 509 states have internal predecessors, (696), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-17 10:32:08,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 721 transitions. [2025-03-17 10:32:08,878 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 721 transitions. Word has length 69 [2025-03-17 10:32:08,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:32:08,878 INFO L471 AbstractCegarLoop]: Abstraction has 525 states and 721 transitions. [2025-03-17 10:32:08,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 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) [2025-03-17 10:32:08,878 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 721 transitions. [2025-03-17 10:32:08,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-17 10:32:08,879 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:32:08,879 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] [2025-03-17 10:32:08,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-17 10:32:08,879 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)] === [2025-03-17 10:32:08,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:32:08,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1727409454, now seen corresponding path program 1 times [2025-03-17 10:32:08,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:32:08,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519889235] [2025-03-17 10:32:08,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:32:08,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:32:08,894 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-17 10:32:08,906 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-17 10:32:08,906 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:32:08,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:32:09,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:32:09,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:32:09,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519889235] [2025-03-17 10:32:09,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519889235] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:32:09,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:32:09,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-17 10:32:09,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357049591] [2025-03-17 10:32:09,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:32:09,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 10:32:09,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:32:09,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 10:32:09,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-17 10:32:09,091 INFO L87 Difference]: Start difference. First operand 525 states and 721 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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) [2025-03-17 10:32:09,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:32:09,731 INFO L93 Difference]: Finished difference Result 1043 states and 1440 transitions. [2025-03-17 10:32:09,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 10:32:09,732 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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 [2025-03-17 10:32:09,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:32:09,736 INFO L225 Difference]: With dead ends: 1043 [2025-03-17 10:32:09,737 INFO L226 Difference]: Without dead ends: 551 [2025-03-17 10:32:09,738 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 [2025-03-17 10:32:09,738 INFO L435 NwaCegarLoop]: 546 mSDtfsCounter, 33 mSDsluCounter, 3008 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3554 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-17 10:32:09,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3554 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-17 10:32:09,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2025-03-17 10:32:09,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 522. [2025-03-17 10:32:09,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 501 states have (on average 1.3832335329341316) internal successors, (693), 506 states have internal predecessors, (693), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-03-17 10:32:09,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 718 transitions. [2025-03-17 10:32:09,754 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 718 transitions. Word has length 69 [2025-03-17 10:32:09,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:32:09,754 INFO L471 AbstractCegarLoop]: Abstraction has 522 states and 718 transitions. [2025-03-17 10:32:09,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 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) [2025-03-17 10:32:09,754 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 718 transitions. [2025-03-17 10:32:09,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-03-17 10:32:09,755 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:32:09,755 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] [2025-03-17 10:32:09,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-17 10:32:09,755 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)] === [2025-03-17 10:32:09,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:32:09,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1171681124, now seen corresponding path program 1 times [2025-03-17 10:32:09,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:32:09,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478957349] [2025-03-17 10:32:09,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:32:09,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:32:09,770 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-03-17 10:32:09,797 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-03-17 10:32:09,797 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:32:09,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:32:32,263 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 [2025-03-17 10:32:32,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:32:32,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:32:32,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478957349] [2025-03-17 10:32:32,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478957349] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:32:32,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:32:32,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-17 10:32:32,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492508470] [2025-03-17 10:32:32,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:32:32,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 10:32:32,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:32:32,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 10:32:32,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=72, Unknown=1, NotChecked=16, Total=110 [2025-03-17 10:32:32,306 INFO L87 Difference]: Start difference. First operand 522 states and 718 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 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) [2025-03-17 10:32:36,852 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 [] [2025-03-17 10:32:41,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-17 10:32:45,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-17 10:32:49,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-17 10:32:53,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-17 10:32:57,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-17 10:33:01,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2025-03-17 10:33:05,461 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 []