./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test2-2.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_SFH_nondet_test2-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 10:36:38,551 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 10:36:38,597 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 10:36:38,600 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 10:36:38,601 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 10:36:38,613 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 10:36:38,613 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 10:36:38,614 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 10:36:38,614 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 10:36:38,614 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 10:36:38,614 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 10:36:38,614 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 10:36:38,614 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 10:36:38,614 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 10:36:38,614 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 10:36:38,615 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 10:36:38,615 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 10:36:38,615 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 10:36:38,615 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 10:36:38,615 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 10:36:38,615 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 10:36:38,615 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 10:36:38,615 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 10:36:38,615 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 10:36:38,615 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 10:36:38,615 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 10:36:38,616 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 10:36:38,616 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 10:36:38,616 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 10:36:38,616 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 10:36:38,617 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 10:36:38,617 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 10:36:38,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 10:36:38,617 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 10:36:38,617 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 10:36:38,617 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 10:36:38,617 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 10:36:38,617 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 10:36:38,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 10:36:38,617 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 10:36:38,617 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 10:36:38,617 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 10:36:38,617 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 10:36:38,617 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 -> 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c [2025-03-17 10:36:38,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 10:36:38,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 10:36:38,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 10:36:38,833 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 10:36:38,834 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 10:36:38,834 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test2-2.i [2025-03-17 10:36:39,948 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14675f00b/21ed971bee2f45c1b7875fc66829938d/FLAG52f15d8b3 [2025-03-17 10:36:40,219 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 10:36:40,220 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test2-2.i [2025-03-17 10:36:40,233 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14675f00b/21ed971bee2f45c1b7875fc66829938d/FLAG52f15d8b3 [2025-03-17 10:36:40,504 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14675f00b/21ed971bee2f45c1b7875fc66829938d [2025-03-17 10:36:40,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 10:36:40,507 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 10:36:40,508 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 10:36:40,508 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 10:36:40,511 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 10:36:40,511 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 10:36:40" (1/1) ... [2025-03-17 10:36:40,512 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e686044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:36:40, skipping insertion in model container [2025-03-17 10:36:40,512 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 10:36:40" (1/1) ... [2025-03-17 10:36:40,543 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 10:36:40,830 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test2-2.i[37435,37448] [2025-03-17 10:36:40,923 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 10:36:40,932 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 10:36:40,960 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test2-2.i[37435,37448] [2025-03-17 10:36:40,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 10:36:41,028 INFO L204 MainTranslator]: Completed translation [2025-03-17 10:36:41,029 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:36:41 WrapperNode [2025-03-17 10:36:41,029 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 10:36:41,030 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 10:36:41,030 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 10:36:41,030 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 10:36:41,033 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:36:41" (1/1) ... [2025-03-17 10:36:41,051 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:36:41" (1/1) ... [2025-03-17 10:36:41,097 INFO L138 Inliner]: procedures = 207, calls = 272, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1398 [2025-03-17 10:36:41,097 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 10:36:41,098 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 10:36:41,098 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 10:36:41,098 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 10:36:41,103 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:36:41" (1/1) ... [2025-03-17 10:36:41,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:36:41" (1/1) ... [2025-03-17 10:36:41,109 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:36:41" (1/1) ... [2025-03-17 10:36:41,150 INFO L175 MemorySlicer]: Split 254 memory accesses to 3 slices as follows [34, 2, 218]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2, 0]. The 54 writes are split as follows [4, 0, 50]. [2025-03-17 10:36:41,150 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:36:41" (1/1) ... [2025-03-17 10:36:41,150 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:36:41" (1/1) ... [2025-03-17 10:36:41,186 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:36:41" (1/1) ... [2025-03-17 10:36:41,192 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:36:41" (1/1) ... [2025-03-17 10:36:41,195 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:36:41" (1/1) ... [2025-03-17 10:36:41,198 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:36:41" (1/1) ... [2025-03-17 10:36:41,204 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 10:36:41,206 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 10:36:41,207 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 10:36:41,207 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 10:36:41,208 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:36:41" (1/1) ... [2025-03-17 10:36:41,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 10:36:41,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:36:41,231 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 10:36:41,233 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 10:36:41,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-17 10:36:41,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-17 10:36:41,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-17 10:36:41,248 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-17 10:36:41,249 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-17 10:36:41,249 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-17 10:36:41,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 10:36:41,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 10:36:41,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 10:36:41,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-17 10:36:41,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 10:36:41,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 10:36:41,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 10:36:41,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 10:36:41,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 10:36:41,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 10:36:41,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 10:36:41,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 10:36:41,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 10:36:41,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 10:36:41,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 10:36:41,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 10:36:41,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 10:36:41,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 10:36:41,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 10:36:41,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 10:36:41,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 10:36:41,411 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 10:36:41,412 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 10:36:42,328 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L812: 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 10:36:42,390 INFO L? ?]: Removed 320 outVars from TransFormulas that were not future-live. [2025-03-17 10:36:42,390 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 10:36:42,428 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 10:36:42,430 INFO L336 CfgBuilder]: Removed 1 assume(true) statements. [2025-03-17 10:36:42,430 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 10:36:42 BoogieIcfgContainer [2025-03-17 10:36:42,430 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 10:36:42,432 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 10:36:42,432 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 10:36:42,436 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 10:36:42,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 10:36:40" (1/3) ... [2025-03-17 10:36:42,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7291b45e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 10:36:42, skipping insertion in model container [2025-03-17 10:36:42,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:36:41" (2/3) ... [2025-03-17 10:36:42,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7291b45e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 10:36:42, skipping insertion in model container [2025-03-17 10:36:42,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 10:36:42" (3/3) ... [2025-03-17 10:36:42,438 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SFH_nondet_test2-2.i [2025-03-17 10:36:42,448 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 10:36:42,450 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SFH_nondet_test2-2.i that has 4 procedures, 400 locations, 1 initial locations, 36 loop locations, and 1 error locations. [2025-03-17 10:36:42,514 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:36:42,521 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;@5c35566a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:36:42,521 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-17 10:36:42,525 INFO L276 IsEmpty]: Start isEmpty. Operand has 392 states, 386 states have (on average 1.621761658031088) internal successors, (626), 387 states have internal predecessors, (626), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:36:42,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-17 10:36:42,529 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:36:42,529 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:36:42,530 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:36:42,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:36:42,533 INFO L85 PathProgramCache]: Analyzing trace with hash -2115820282, now seen corresponding path program 1 times [2025-03-17 10:36:42,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:36:42,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396710160] [2025-03-17 10:36:42,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:36:42,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:36:42,601 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 10:36:42,614 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 10:36:42,614 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:36:42,616 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:36:42,652 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 10:36:42,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:36:42,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396710160] [2025-03-17 10:36:42,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396710160] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:36:42,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:36:42,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 10:36:42,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393874303] [2025-03-17 10:36:42,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:36:42,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 10:36:42,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:36:42,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 10:36:42,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 10:36:42,672 INFO L87 Difference]: Start difference. First operand has 392 states, 386 states have (on average 1.621761658031088) internal successors, (626), 387 states have internal predecessors, (626), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 10:36:42,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:36:42,769 INFO L93 Difference]: Finished difference Result 782 states and 1261 transitions. [2025-03-17 10:36:42,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 10:36:42,770 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-03-17 10:36:42,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:36:42,777 INFO L225 Difference]: With dead ends: 782 [2025-03-17 10:36:42,778 INFO L226 Difference]: Without dead ends: 355 [2025-03-17 10:36:42,782 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 10:36:42,785 INFO L435 NwaCegarLoop]: 527 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 527 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 10:36:42,786 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 527 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 10:36:42,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2025-03-17 10:36:42,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2025-03-17 10:36:42,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 350 states have (on average 1.4628571428571429) internal successors, (512), 350 states have internal predecessors, (512), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:36:42,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 518 transitions. [2025-03-17 10:36:42,832 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 518 transitions. Word has length 10 [2025-03-17 10:36:42,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:36:42,833 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 518 transitions. [2025-03-17 10:36:42,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 10:36:42,833 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 518 transitions. [2025-03-17 10:36:42,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-17 10:36:42,837 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:36:42,837 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 10:36:42,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 10:36:42,837 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:36:42,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:36:42,838 INFO L85 PathProgramCache]: Analyzing trace with hash 400336075, now seen corresponding path program 1 times [2025-03-17 10:36:42,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:36:42,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854740858] [2025-03-17 10:36:42,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:36:42,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:36:42,857 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-17 10:36:42,870 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-17 10:36:42,873 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:36:42,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:36:43,118 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 10:36:43,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:36:43,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854740858] [2025-03-17 10:36:43,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854740858] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:36:43,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:36:43,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 10:36:43,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648431386] [2025-03-17 10:36:43,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:36:43,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 10:36:43,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:36:43,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 10:36:43,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 10:36:43,120 INFO L87 Difference]: Start difference. First operand 355 states and 518 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 10:36:43,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:36:43,269 INFO L93 Difference]: Finished difference Result 469 states and 683 transitions. [2025-03-17 10:36:43,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 10:36:43,270 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 63 [2025-03-17 10:36:43,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:36:43,286 INFO L225 Difference]: With dead ends: 469 [2025-03-17 10:36:43,286 INFO L226 Difference]: Without dead ends: 313 [2025-03-17 10:36:43,287 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 10:36:43,287 INFO L435 NwaCegarLoop]: 385 mSDtfsCounter, 30 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 10:36:43,287 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1136 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 10:36:43,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2025-03-17 10:36:43,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2025-03-17 10:36:43,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 308 states have (on average 1.4123376623376624) internal successors, (435), 308 states have internal predecessors, (435), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:36:43,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 441 transitions. [2025-03-17 10:36:43,304 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 441 transitions. Word has length 63 [2025-03-17 10:36:43,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:36:43,304 INFO L471 AbstractCegarLoop]: Abstraction has 313 states and 441 transitions. [2025-03-17 10:36:43,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 10:36:43,304 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 441 transitions. [2025-03-17 10:36:43,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-17 10:36:43,307 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:36:43,307 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 10:36:43,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 10:36:43,307 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:36:43,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:36:43,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1781043346, now seen corresponding path program 1 times [2025-03-17 10:36:43,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:36:43,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141044012] [2025-03-17 10:36:43,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:36:43,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:36:43,328 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-17 10:36:43,373 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-17 10:36:43,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:36:43,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:36:43,707 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 10:36:43,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:36:43,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141044012] [2025-03-17 10:36:43,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141044012] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:36:43,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:36:43,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 10:36:43,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924688906] [2025-03-17 10:36:43,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:36:43,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 10:36:43,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:36:43,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 10:36:43,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-03-17 10:36:43,708 INFO L87 Difference]: Start difference. First operand 313 states and 441 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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 10:36:43,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:36:43,901 INFO L93 Difference]: Finished difference Result 736 states and 1032 transitions. [2025-03-17 10:36:43,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 10:36:43,902 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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 63 [2025-03-17 10:36:43,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:36:43,904 INFO L225 Difference]: With dead ends: 736 [2025-03-17 10:36:43,904 INFO L226 Difference]: Without dead ends: 619 [2025-03-17 10:36:43,904 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-17 10:36:43,905 INFO L435 NwaCegarLoop]: 390 mSDtfsCounter, 422 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 1554 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 10:36:43,905 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 1554 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 10:36:43,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2025-03-17 10:36:43,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 315. [2025-03-17 10:36:43,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 310 states have (on average 1.4096774193548387) internal successors, (437), 310 states have internal predecessors, (437), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:36:43,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 443 transitions. [2025-03-17 10:36:43,919 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 443 transitions. Word has length 63 [2025-03-17 10:36:43,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:36:43,920 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 443 transitions. [2025-03-17 10:36:43,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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 10:36:43,920 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 443 transitions. [2025-03-17 10:36:43,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2025-03-17 10:36:43,924 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:36:43,924 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:36:43,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 10:36:43,925 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:36:43,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:36:43,925 INFO L85 PathProgramCache]: Analyzing trace with hash 187932397, now seen corresponding path program 1 times [2025-03-17 10:36:43,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:36:43,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773472568] [2025-03-17 10:36:43,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:36:43,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:36:43,978 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-03-17 10:36:43,984 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-03-17 10:36:43,984 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:36:43,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:36:44,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:36:44,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:36:44,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773472568] [2025-03-17 10:36:44,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773472568] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:36:44,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:36:44,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 10:36:44,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802817910] [2025-03-17 10:36:44,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:36:44,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 10:36:44,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:36:44,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 10:36:44,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 10:36:44,202 INFO L87 Difference]: Start difference. First operand 315 states and 443 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 10:36:44,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:36:44,302 INFO L93 Difference]: Finished difference Result 584 states and 816 transitions. [2025-03-17 10:36:44,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 10:36:44,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 137 [2025-03-17 10:36:44,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:36:44,304 INFO L225 Difference]: With dead ends: 584 [2025-03-17 10:36:44,306 INFO L226 Difference]: Without dead ends: 273 [2025-03-17 10:36:44,307 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 10:36:44,307 INFO L435 NwaCegarLoop]: 311 mSDtfsCounter, 30 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 10:36:44,308 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 914 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 10:36:44,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2025-03-17 10:36:44,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2025-03-17 10:36:44,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 268 states have (on average 1.3432835820895523) internal successors, (360), 268 states have internal predecessors, (360), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:36:44,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 366 transitions. [2025-03-17 10:36:44,320 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 366 transitions. Word has length 137 [2025-03-17 10:36:44,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:36:44,321 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 366 transitions. [2025-03-17 10:36:44,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 10:36:44,321 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 366 transitions. [2025-03-17 10:36:44,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2025-03-17 10:36:44,324 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:36:44,324 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:36:44,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 10:36:44,325 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:36:44,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:36:44,325 INFO L85 PathProgramCache]: Analyzing trace with hash -191039897, now seen corresponding path program 1 times [2025-03-17 10:36:44,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:36:44,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254885371] [2025-03-17 10:36:44,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:36:44,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:36:44,370 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-03-17 10:36:44,387 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-03-17 10:36:44,387 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:36:44,387 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:36:44,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:36:44,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:36:44,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254885371] [2025-03-17 10:36:44,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254885371] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:36:44,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:36:44,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 10:36:44,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002206984] [2025-03-17 10:36:44,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:36:44,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 10:36:44,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:36:44,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 10:36:44,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 10:36:44,497 INFO L87 Difference]: Start difference. First operand 273 states and 366 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 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 10:36:44,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:36:44,591 INFO L93 Difference]: Finished difference Result 720 states and 970 transitions. [2025-03-17 10:36:44,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 10:36:44,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 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 137 [2025-03-17 10:36:44,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:36:44,593 INFO L225 Difference]: With dead ends: 720 [2025-03-17 10:36:44,593 INFO L226 Difference]: Without dead ends: 451 [2025-03-17 10:36:44,594 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 10:36:44,594 INFO L435 NwaCegarLoop]: 428 mSDtfsCounter, 175 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 10:36:44,595 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 742 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 10:36:44,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2025-03-17 10:36:44,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 449. [2025-03-17 10:36:44,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 444 states have (on average 1.3490990990990992) internal successors, (599), 444 states have internal predecessors, (599), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:36:44,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 605 transitions. [2025-03-17 10:36:44,611 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 605 transitions. Word has length 137 [2025-03-17 10:36:44,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:36:44,612 INFO L471 AbstractCegarLoop]: Abstraction has 449 states and 605 transitions. [2025-03-17 10:36:44,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 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 10:36:44,612 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 605 transitions. [2025-03-17 10:36:44,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2025-03-17 10:36:44,613 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:36:44,613 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:36:44,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 10:36:44,613 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:36:44,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:36:44,614 INFO L85 PathProgramCache]: Analyzing trace with hash 2097649661, now seen corresponding path program 1 times [2025-03-17 10:36:44,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:36:44,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093249388] [2025-03-17 10:36:44,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:36:44,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:36:44,657 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 152 statements into 1 equivalence classes. [2025-03-17 10:36:44,681 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 152 of 152 statements. [2025-03-17 10:36:44,681 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:36:44,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:36:44,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:36:44,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:36:44,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093249388] [2025-03-17 10:36:44,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093249388] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:36:44,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:36:44,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 10:36:44,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989539] [2025-03-17 10:36:44,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:36:44,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 10:36:44,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:36:44,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 10:36:44,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 10:36:44,840 INFO L87 Difference]: Start difference. First operand 449 states and 605 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:36:45,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:36:45,039 INFO L93 Difference]: Finished difference Result 718 states and 967 transitions. [2025-03-17 10:36:45,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 10:36:45,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 152 [2025-03-17 10:36:45,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:36:45,041 INFO L225 Difference]: With dead ends: 718 [2025-03-17 10:36:45,041 INFO L226 Difference]: Without dead ends: 358 [2025-03-17 10:36:45,041 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 10:36:45,042 INFO L435 NwaCegarLoop]: 389 mSDtfsCounter, 539 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 10:36:45,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 508 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 10:36:45,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2025-03-17 10:36:45,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2025-03-17 10:36:45,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 353 states have (on average 1.3427762039660056) internal successors, (474), 353 states have internal predecessors, (474), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:36:45,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 480 transitions. [2025-03-17 10:36:45,058 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 480 transitions. Word has length 152 [2025-03-17 10:36:45,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:36:45,059 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 480 transitions. [2025-03-17 10:36:45,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:36:45,060 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 480 transitions. [2025-03-17 10:36:45,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2025-03-17 10:36:45,061 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:36:45,061 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:36:45,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 10:36:45,062 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:36:45,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:36:45,062 INFO L85 PathProgramCache]: Analyzing trace with hash 926730091, now seen corresponding path program 1 times [2025-03-17 10:36:45,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:36:45,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564178312] [2025-03-17 10:36:45,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:36:45,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:36:45,097 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-03-17 10:36:45,297 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-03-17 10:36:45,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:36:45,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:36:45,520 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 10:36:45,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:36:45,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564178312] [2025-03-17 10:36:45,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564178312] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 10:36:45,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538121092] [2025-03-17 10:36:45,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:36:45,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:36:45,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:36:45,524 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 10:36:45,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 10:36:45,690 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-03-17 10:36:45,796 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-03-17 10:36:45,797 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:36:45,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:36:45,805 INFO L256 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-03-17 10:36:45,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 10:36:45,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-17 10:36:46,481 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 10:36:46,481 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 10:36:46,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538121092] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:36:46,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 10:36:46,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2025-03-17 10:36:46,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904541468] [2025-03-17 10:36:46,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:36:46,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 10:36:46,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:36:46,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 10:36:46,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-03-17 10:36:46,483 INFO L87 Difference]: Start difference. First operand 358 states and 480 transitions. Second operand has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:36:47,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:36:47,161 INFO L93 Difference]: Finished difference Result 652 states and 870 transitions. [2025-03-17 10:36:47,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 10:36:47,162 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 162 [2025-03-17 10:36:47,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:36:47,164 INFO L225 Difference]: With dead ends: 652 [2025-03-17 10:36:47,164 INFO L226 Difference]: Without dead ends: 538 [2025-03-17 10:36:47,165 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2025-03-17 10:36:47,165 INFO L435 NwaCegarLoop]: 367 mSDtfsCounter, 354 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 10:36:47,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 1868 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 10:36:47,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2025-03-17 10:36:47,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 393. [2025-03-17 10:36:47,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 388 states have (on average 1.3221649484536082) internal successors, (513), 388 states have internal predecessors, (513), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:36:47,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 519 transitions. [2025-03-17 10:36:47,176 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 519 transitions. Word has length 162 [2025-03-17 10:36:47,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:36:47,177 INFO L471 AbstractCegarLoop]: Abstraction has 393 states and 519 transitions. [2025-03-17 10:36:47,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.4) internal successors, (154), 10 states have internal predecessors, (154), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:36:47,177 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 519 transitions. [2025-03-17 10:36:47,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-03-17 10:36:47,178 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:36:47,178 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:36:47,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 10:36:47,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:36:47,379 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:36:47,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:36:47,379 INFO L85 PathProgramCache]: Analyzing trace with hash -684691586, now seen corresponding path program 1 times [2025-03-17 10:36:47,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:36:47,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555969032] [2025-03-17 10:36:47,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:36:47,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:36:47,416 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-17 10:36:47,579 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-17 10:36:47,579 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:36:47,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:36:47,772 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 10:36:47,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:36:47,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555969032] [2025-03-17 10:36:47,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555969032] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 10:36:47,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604409926] [2025-03-17 10:36:47,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:36:47,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:36:47,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:36:47,775 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 10:36:47,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 10:36:47,945 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-03-17 10:36:48,040 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-03-17 10:36:48,040 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:36:48,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:36:48,044 INFO L256 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-17 10:36:48,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 10:36:48,150 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:36:48,151 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 10:36:48,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604409926] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:36:48,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 10:36:48,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2025-03-17 10:36:48,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383878342] [2025-03-17 10:36:48,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:36:48,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 10:36:48,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:36:48,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 10:36:48,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-17 10:36:48,153 INFO L87 Difference]: Start difference. First operand 393 states and 519 transitions. Second operand has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:36:48,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:36:48,375 INFO L93 Difference]: Finished difference Result 754 states and 1005 transitions. [2025-03-17 10:36:48,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 10:36:48,376 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 163 [2025-03-17 10:36:48,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:36:48,378 INFO L225 Difference]: With dead ends: 754 [2025-03-17 10:36:48,378 INFO L226 Difference]: Without dead ends: 403 [2025-03-17 10:36:48,378 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-17 10:36:48,379 INFO L435 NwaCegarLoop]: 317 mSDtfsCounter, 12 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 10:36:48,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1347 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 10:36:48,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2025-03-17 10:36:48,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 401. [2025-03-17 10:36:48,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 396 states have (on average 1.3156565656565657) internal successors, (521), 396 states have internal predecessors, (521), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:36:48,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 527 transitions. [2025-03-17 10:36:48,389 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 527 transitions. Word has length 163 [2025-03-17 10:36:48,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:36:48,389 INFO L471 AbstractCegarLoop]: Abstraction has 401 states and 527 transitions. [2025-03-17 10:36:48,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:36:48,389 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 527 transitions. [2025-03-17 10:36:48,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2025-03-17 10:36:48,390 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:36:48,391 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:36:48,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 10:36:48,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-03-17 10:36:48,591 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:36:48,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:36:48,592 INFO L85 PathProgramCache]: Analyzing trace with hash -57348423, now seen corresponding path program 1 times [2025-03-17 10:36:48,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:36:48,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25163965] [2025-03-17 10:36:48,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:36:48,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:36:48,640 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 164 statements into 1 equivalence classes. [2025-03-17 10:36:48,671 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 164 of 164 statements. [2025-03-17 10:36:48,672 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:36:48,672 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:36:48,876 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:36:48,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:36:48,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25163965] [2025-03-17 10:36:48,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25163965] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:36:48,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:36:48,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 10:36:48,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680282016] [2025-03-17 10:36:48,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:36:48,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 10:36:48,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:36:48,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 10:36:48,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-17 10:36:48,878 INFO L87 Difference]: Start difference. First operand 401 states and 527 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:36:49,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:36:49,159 INFO L93 Difference]: Finished difference Result 756 states and 1001 transitions. [2025-03-17 10:36:49,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 10:36:49,159 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 164 [2025-03-17 10:36:49,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:36:49,161 INFO L225 Difference]: With dead ends: 756 [2025-03-17 10:36:49,161 INFO L226 Difference]: Without dead ends: 411 [2025-03-17 10:36:49,162 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 10:36:49,163 INFO L435 NwaCegarLoop]: 310 mSDtfsCounter, 14 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 10:36:49,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1574 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 10:36:49,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2025-03-17 10:36:49,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 409. [2025-03-17 10:36:49,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 404 states have (on average 1.3143564356435644) internal successors, (531), 404 states have internal predecessors, (531), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:36:49,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 537 transitions. [2025-03-17 10:36:49,173 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 537 transitions. Word has length 164 [2025-03-17 10:36:49,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:36:49,173 INFO L471 AbstractCegarLoop]: Abstraction has 409 states and 537 transitions. [2025-03-17 10:36:49,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:36:49,173 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 537 transitions. [2025-03-17 10:36:49,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2025-03-17 10:36:49,175 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:36:49,175 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:36:49,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 10:36:49,175 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:36:49,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:36:49,176 INFO L85 PathProgramCache]: Analyzing trace with hash 870544997, now seen corresponding path program 1 times [2025-03-17 10:36:49,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:36:49,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585468789] [2025-03-17 10:36:49,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:36:49,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:36:49,206 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-03-17 10:36:49,232 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-03-17 10:36:49,233 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:36:49,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:36:49,595 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:36:49,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:36:49,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585468789] [2025-03-17 10:36:49,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585468789] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:36:49,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:36:49,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-17 10:36:49,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037695654] [2025-03-17 10:36:49,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:36:49,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 10:36:49,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:36:49,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 10:36:49,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-17 10:36:49,597 INFO L87 Difference]: Start difference. First operand 409 states and 537 transitions. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:36:50,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:36:50,036 INFO L93 Difference]: Finished difference Result 785 states and 1040 transitions. [2025-03-17 10:36:50,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 10:36:50,036 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 165 [2025-03-17 10:36:50,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:36:50,038 INFO L225 Difference]: With dead ends: 785 [2025-03-17 10:36:50,038 INFO L226 Difference]: Without dead ends: 431 [2025-03-17 10:36:50,041 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 10:36:50,042 INFO L435 NwaCegarLoop]: 318 mSDtfsCounter, 31 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 2162 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 10:36:50,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 2162 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 10:36:50,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2025-03-17 10:36:50,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 425. [2025-03-17 10:36:50,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 420 states have (on average 1.311904761904762) internal successors, (551), 420 states have internal predecessors, (551), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:36:50,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 557 transitions. [2025-03-17 10:36:50,076 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 557 transitions. Word has length 165 [2025-03-17 10:36:50,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:36:50,076 INFO L471 AbstractCegarLoop]: Abstraction has 425 states and 557 transitions. [2025-03-17 10:36:50,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:36:50,076 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 557 transitions. [2025-03-17 10:36:50,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2025-03-17 10:36:50,077 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:36:50,078 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:36:50,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 10:36:50,078 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:36:50,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:36:50,078 INFO L85 PathProgramCache]: Analyzing trace with hash -417265407, now seen corresponding path program 1 times [2025-03-17 10:36:50,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:36:50,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234118157] [2025-03-17 10:36:50,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:36:50,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:36:50,108 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 165 statements into 1 equivalence classes. [2025-03-17 10:36:50,126 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 165 of 165 statements. [2025-03-17 10:36:50,127 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:36:50,127 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:36:50,328 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:36:50,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:36:50,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234118157] [2025-03-17 10:36:50,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234118157] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:36:50,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:36:50,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 10:36:50,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822227818] [2025-03-17 10:36:50,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:36:50,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 10:36:50,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:36:50,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 10:36:50,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 10:36:50,330 INFO L87 Difference]: Start difference. First operand 425 states and 557 transitions. Second operand has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:36:50,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:36:50,525 INFO L93 Difference]: Finished difference Result 795 states and 1051 transitions. [2025-03-17 10:36:50,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 10:36:50,526 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 165 [2025-03-17 10:36:50,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:36:50,528 INFO L225 Difference]: With dead ends: 795 [2025-03-17 10:36:50,528 INFO L226 Difference]: Without dead ends: 431 [2025-03-17 10:36:50,528 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 10:36:50,529 INFO L435 NwaCegarLoop]: 319 mSDtfsCounter, 8 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 10:36:50,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1099 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 10:36:50,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2025-03-17 10:36:50,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2025-03-17 10:36:50,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 426 states have (on average 1.307511737089202) internal successors, (557), 426 states have internal predecessors, (557), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:36:50,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 563 transitions. [2025-03-17 10:36:50,540 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 563 transitions. Word has length 165 [2025-03-17 10:36:50,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:36:50,540 INFO L471 AbstractCegarLoop]: Abstraction has 431 states and 563 transitions. [2025-03-17 10:36:50,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:36:50,541 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 563 transitions. [2025-03-17 10:36:50,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2025-03-17 10:36:50,542 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:36:50,542 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:36:50,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 10:36:50,542 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:36:50,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:36:50,542 INFO L85 PathProgramCache]: Analyzing trace with hash -87540668, now seen corresponding path program 1 times [2025-03-17 10:36:50,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:36:50,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629745621] [2025-03-17 10:36:50,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:36:50,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:36:50,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-17 10:36:50,674 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-17 10:36:50,674 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:36:50,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:36:50,819 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 10:36:50,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:36:50,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629745621] [2025-03-17 10:36:50,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629745621] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 10:36:50,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633970816] [2025-03-17 10:36:50,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:36:50,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:36:50,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:36:50,823 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 10:36:50,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 10:36:51,014 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-17 10:36:51,113 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-17 10:36:51,113 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:36:51,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:36:51,123 INFO L256 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-03-17 10:36:51,131 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 10:36:51,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-17 10:36:51,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2025-03-17 10:36:51,854 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:36:51,854 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 10:36:51,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633970816] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:36:51,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 10:36:51,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [4] total 14 [2025-03-17 10:36:51,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740762727] [2025-03-17 10:36:51,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:36:51,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 10:36:51,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:36:51,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 10:36:51,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2025-03-17 10:36:51,856 INFO L87 Difference]: Start difference. First operand 431 states and 563 transitions. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:36:53,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:36:53,648 INFO L93 Difference]: Finished difference Result 938 states and 1239 transitions. [2025-03-17 10:36:53,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 10:36:53,648 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 166 [2025-03-17 10:36:53,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:36:53,651 INFO L225 Difference]: With dead ends: 938 [2025-03-17 10:36:53,651 INFO L226 Difference]: Without dead ends: 564 [2025-03-17 10:36:53,652 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2025-03-17 10:36:53,652 INFO L435 NwaCegarLoop]: 336 mSDtfsCounter, 456 mSDsluCounter, 2122 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 2458 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-17 10:36:53,652 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 2458 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-17 10:36:53,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2025-03-17 10:36:53,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 419. [2025-03-17 10:36:53,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 414 states have (on average 1.3067632850241546) internal successors, (541), 414 states have internal predecessors, (541), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:36:53,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 547 transitions. [2025-03-17 10:36:53,664 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 547 transitions. Word has length 166 [2025-03-17 10:36:53,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:36:53,665 INFO L471 AbstractCegarLoop]: Abstraction has 419 states and 547 transitions. [2025-03-17 10:36:53,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:36:53,666 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 547 transitions. [2025-03-17 10:36:53,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2025-03-17 10:36:53,667 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:36:53,667 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:36:53,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 10:36:53,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:36:53,868 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:36:53,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:36:53,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1177342613, now seen corresponding path program 1 times [2025-03-17 10:36:53,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:36:53,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925729705] [2025-03-17 10:36:53,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:36:53,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:36:53,916 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-17 10:36:54,003 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-17 10:36:54,003 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:36:54,003 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:36:54,129 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 10:36:54,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:36:54,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925729705] [2025-03-17 10:36:54,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925729705] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 10:36:54,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384026033] [2025-03-17 10:36:54,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:36:54,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:36:54,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:36:54,132 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 10:36:54,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 10:36:54,343 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 166 statements into 1 equivalence classes. [2025-03-17 10:36:54,413 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 166 of 166 statements. [2025-03-17 10:36:54,413 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:36:54,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:36:54,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-17 10:36:54,421 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 10:36:54,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 10:36:54,504 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 10:36:54,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384026033] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:36:54,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 10:36:54,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2025-03-17 10:36:54,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65673497] [2025-03-17 10:36:54,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:36:54,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 10:36:54,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:36:54,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 10:36:54,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-17 10:36:54,507 INFO L87 Difference]: Start difference. First operand 419 states and 547 transitions. Second operand has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:36:54,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:36:54,710 INFO L93 Difference]: Finished difference Result 533 states and 700 transitions. [2025-03-17 10:36:54,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 10:36:54,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 166 [2025-03-17 10:36:54,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:36:54,713 INFO L225 Difference]: With dead ends: 533 [2025-03-17 10:36:54,713 INFO L226 Difference]: Without dead ends: 419 [2025-03-17 10:36:54,714 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-03-17 10:36:54,714 INFO L435 NwaCegarLoop]: 310 mSDtfsCounter, 34 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 10:36:54,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1320 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 10:36:54,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2025-03-17 10:36:54,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2025-03-17 10:36:54,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 414 states have (on average 1.3043478260869565) internal successors, (540), 414 states have internal predecessors, (540), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:36:54,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 546 transitions. [2025-03-17 10:36:54,761 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 546 transitions. Word has length 166 [2025-03-17 10:36:54,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:36:54,762 INFO L471 AbstractCegarLoop]: Abstraction has 419 states and 546 transitions. [2025-03-17 10:36:54,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:36:54,763 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 546 transitions. [2025-03-17 10:36:54,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2025-03-17 10:36:54,765 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:36:54,765 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:36:54,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-17 10:36:54,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:36:54,966 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:36:54,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:36:54,966 INFO L85 PathProgramCache]: Analyzing trace with hash -467704719, now seen corresponding path program 1 times [2025-03-17 10:36:54,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:36:54,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882761811] [2025-03-17 10:36:54,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:36:54,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:36:55,002 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 167 statements into 1 equivalence classes. [2025-03-17 10:36:55,023 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 167 of 167 statements. [2025-03-17 10:36:55,023 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:36:55,023 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:36:55,206 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 10:36:55,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:36:55,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882761811] [2025-03-17 10:36:55,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882761811] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:36:55,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:36:55,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 10:36:55,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381955058] [2025-03-17 10:36:55,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:36:55,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 10:36:55,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:36:55,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 10:36:55,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 10:36:55,209 INFO L87 Difference]: Start difference. First operand 419 states and 546 transitions. Second operand has 6 states, 6 states have (on average 26.5) internal successors, (159), 6 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:36:55,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:36:55,404 INFO L93 Difference]: Finished difference Result 536 states and 703 transitions. [2025-03-17 10:36:55,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 10:36:55,404 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.5) internal successors, (159), 6 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 167 [2025-03-17 10:36:55,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:36:55,406 INFO L225 Difference]: With dead ends: 536 [2025-03-17 10:36:55,406 INFO L226 Difference]: Without dead ends: 422 [2025-03-17 10:36:55,406 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 10:36:55,406 INFO L435 NwaCegarLoop]: 317 mSDtfsCounter, 8 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 10:36:55,406 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1094 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 10:36:55,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2025-03-17 10:36:55,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2025-03-17 10:36:55,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 417 states have (on average 1.3021582733812949) internal successors, (543), 417 states have internal predecessors, (543), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:36:55,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 549 transitions. [2025-03-17 10:36:55,417 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 549 transitions. Word has length 167 [2025-03-17 10:36:55,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:36:55,417 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 549 transitions. [2025-03-17 10:36:55,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.5) internal successors, (159), 6 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:36:55,418 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 549 transitions. [2025-03-17 10:36:55,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2025-03-17 10:36:55,419 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:36:55,419 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:36:55,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-17 10:36:55,419 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:36:55,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:36:55,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1579382596, now seen corresponding path program 1 times [2025-03-17 10:36:55,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:36:55,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330374941] [2025-03-17 10:36:55,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:36:55,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:36:55,451 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-17 10:36:55,538 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-17 10:36:55,538 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:36:55,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:36:55,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 10:36:55,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:36:55,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330374941] [2025-03-17 10:36:55,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330374941] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 10:36:55,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28717050] [2025-03-17 10:36:55,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:36:55,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:36:55,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:36:55,654 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 10:36:55,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 10:36:55,872 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-17 10:36:55,982 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-17 10:36:55,982 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:36:55,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:36:55,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-17 10:36:55,988 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 10:36:56,166 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 10:36:56,166 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 10:36:56,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28717050] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:36:56,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 10:36:56,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-17 10:36:56,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584325997] [2025-03-17 10:36:56,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:36:56,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 10:36:56,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:36:56,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 10:36:56,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-17 10:36:56,168 INFO L87 Difference]: Start difference. First operand 422 states and 549 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:36:56,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:36:56,445 INFO L93 Difference]: Finished difference Result 544 states and 712 transitions. [2025-03-17 10:36:56,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 10:36:56,446 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 168 [2025-03-17 10:36:56,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:36:56,447 INFO L225 Difference]: With dead ends: 544 [2025-03-17 10:36:56,447 INFO L226 Difference]: Without dead ends: 427 [2025-03-17 10:36:56,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-17 10:36:56,448 INFO L435 NwaCegarLoop]: 309 mSDtfsCounter, 12 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1568 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 10:36:56,448 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1568 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 10:36:56,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2025-03-17 10:36:56,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 426. [2025-03-17 10:36:56,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 421 states have (on average 1.3016627078384797) internal successors, (548), 421 states have internal predecessors, (548), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:36:56,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 554 transitions. [2025-03-17 10:36:56,460 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 554 transitions. Word has length 168 [2025-03-17 10:36:56,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:36:56,460 INFO L471 AbstractCegarLoop]: Abstraction has 426 states and 554 transitions. [2025-03-17 10:36:56,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:36:56,461 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 554 transitions. [2025-03-17 10:36:56,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2025-03-17 10:36:56,462 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:36:56,463 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:36:56,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-17 10:36:56,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-03-17 10:36:56,663 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:36:56,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:36:56,664 INFO L85 PathProgramCache]: Analyzing trace with hash -665450031, now seen corresponding path program 1 times [2025-03-17 10:36:56,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:36:56,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753145275] [2025-03-17 10:36:56,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:36:56,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:36:56,694 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-03-17 10:36:56,712 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-03-17 10:36:56,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:36:56,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:36:56,893 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 10:36:56,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:36:56,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753145275] [2025-03-17 10:36:56,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753145275] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:36:56,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:36:56,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 10:36:56,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994582237] [2025-03-17 10:36:56,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:36:56,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 10:36:56,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:36:56,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 10:36:56,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-17 10:36:56,895 INFO L87 Difference]: Start difference. First operand 426 states and 554 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:36:57,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:36:57,189 INFO L93 Difference]: Finished difference Result 552 states and 722 transitions. [2025-03-17 10:36:57,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 10:36:57,189 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 168 [2025-03-17 10:36:57,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:36:57,191 INFO L225 Difference]: With dead ends: 552 [2025-03-17 10:36:57,191 INFO L226 Difference]: Without dead ends: 431 [2025-03-17 10:36:57,192 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 10:36:57,193 INFO L435 NwaCegarLoop]: 314 mSDtfsCounter, 12 mSDsluCounter, 1260 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 10:36:57,193 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1574 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 10:36:57,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2025-03-17 10:36:57,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 426. [2025-03-17 10:36:57,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 421 states have (on average 1.3016627078384797) internal successors, (548), 421 states have internal predecessors, (548), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:36:57,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 554 transitions. [2025-03-17 10:36:57,205 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 554 transitions. Word has length 168 [2025-03-17 10:36:57,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:36:57,206 INFO L471 AbstractCegarLoop]: Abstraction has 426 states and 554 transitions. [2025-03-17 10:36:57,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:36:57,206 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 554 transitions. [2025-03-17 10:36:57,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2025-03-17 10:36:57,207 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:36:57,207 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:36:57,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-17 10:36:57,208 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:36:57,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:36:57,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1111508425, now seen corresponding path program 1 times [2025-03-17 10:36:57,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:36:57,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425385210] [2025-03-17 10:36:57,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:36:57,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:36:57,241 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-03-17 10:36:57,375 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-03-17 10:36:57,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:36:57,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:36:57,533 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 10:36:57,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:36:57,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425385210] [2025-03-17 10:36:57,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425385210] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 10:36:57,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392925939] [2025-03-17 10:36:57,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:36:57,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:36:57,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:36:57,536 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 10:36:57,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-17 10:36:57,795 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-03-17 10:36:57,877 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-03-17 10:36:57,877 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:36:57,877 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:36:57,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-03-17 10:36:57,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 10:36:58,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 10:36:58,098 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 10:36:58,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392925939] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:36:58,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 10:36:58,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4] total 11 [2025-03-17 10:36:58,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170838524] [2025-03-17 10:36:58,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:36:58,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 10:36:58,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:36:58,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 10:36:58,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-17 10:36:58,100 INFO L87 Difference]: Start difference. First operand 426 states and 554 transitions. Second operand has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:36:58,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:36:58,552 INFO L93 Difference]: Finished difference Result 552 states and 720 transitions. [2025-03-17 10:36:58,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 10:36:58,553 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 169 [2025-03-17 10:36:58,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:36:58,554 INFO L225 Difference]: With dead ends: 552 [2025-03-17 10:36:58,554 INFO L226 Difference]: Without dead ends: 431 [2025-03-17 10:36:58,555 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2025-03-17 10:36:58,555 INFO L435 NwaCegarLoop]: 309 mSDtfsCounter, 11 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2052 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 10:36:58,555 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2052 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 10:36:58,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2025-03-17 10:36:58,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 429. [2025-03-17 10:36:58,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 424 states have (on average 1.2995283018867925) internal successors, (551), 424 states have internal predecessors, (551), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:36:58,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 557 transitions. [2025-03-17 10:36:58,566 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 557 transitions. Word has length 169 [2025-03-17 10:36:58,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:36:58,566 INFO L471 AbstractCegarLoop]: Abstraction has 429 states and 557 transitions. [2025-03-17 10:36:58,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:36:58,567 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 557 transitions. [2025-03-17 10:36:58,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2025-03-17 10:36:58,568 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:36:58,568 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:36:58,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-17 10:36:58,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-03-17 10:36:58,769 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:36:58,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:36:58,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1981843126, now seen corresponding path program 1 times [2025-03-17 10:36:58,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:36:58,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128457864] [2025-03-17 10:36:58,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:36:58,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:36:58,801 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-03-17 10:36:58,824 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-03-17 10:36:58,824 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:36:58,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:36:59,038 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 10:36:59,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:36:59,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128457864] [2025-03-17 10:36:59,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128457864] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:36:59,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:36:59,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-17 10:36:59,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312207329] [2025-03-17 10:36:59,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:36:59,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 10:36:59,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:36:59,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 10:36:59,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-17 10:36:59,041 INFO L87 Difference]: Start difference. First operand 429 states and 557 transitions. Second operand has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:36:59,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:36:59,360 INFO L93 Difference]: Finished difference Result 563 states and 734 transitions. [2025-03-17 10:36:59,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 10:36:59,361 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 169 [2025-03-17 10:36:59,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:36:59,363 INFO L225 Difference]: With dead ends: 563 [2025-03-17 10:36:59,363 INFO L226 Difference]: Without dead ends: 439 [2025-03-17 10:36:59,363 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 10:36:59,364 INFO L435 NwaCegarLoop]: 312 mSDtfsCounter, 20 mSDsluCounter, 1834 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2146 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 10:36:59,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2146 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 10:36:59,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2025-03-17 10:36:59,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 436. [2025-03-17 10:36:59,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 431 states have (on average 1.2993039443155452) internal successors, (560), 431 states have internal predecessors, (560), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:36:59,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 566 transitions. [2025-03-17 10:36:59,375 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 566 transitions. Word has length 169 [2025-03-17 10:36:59,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:36:59,376 INFO L471 AbstractCegarLoop]: Abstraction has 436 states and 566 transitions. [2025-03-17 10:36:59,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 9 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:36:59,376 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 566 transitions. [2025-03-17 10:36:59,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2025-03-17 10:36:59,377 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:36:59,377 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:36:59,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-17 10:36:59,377 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:36:59,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:36:59,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1825954979, now seen corresponding path program 1 times [2025-03-17 10:36:59,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:36:59,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685639251] [2025-03-17 10:36:59,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:36:59,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:36:59,410 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-03-17 10:36:59,480 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-03-17 10:36:59,481 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:36:59,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:36:59,596 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 10:36:59,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:36:59,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685639251] [2025-03-17 10:36:59,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685639251] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 10:36:59,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635424184] [2025-03-17 10:36:59,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:36:59,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:36:59,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:36:59,599 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 10:36:59,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-17 10:36:59,860 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-03-17 10:36:59,946 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-03-17 10:36:59,946 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:36:59,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:36:59,952 INFO L256 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-17 10:36:59,954 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 10:37:00,041 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 10:37:00,042 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 10:37:00,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635424184] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:37:00,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 10:37:00,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-17 10:37:00,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563821017] [2025-03-17 10:37:00,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:37:00,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 10:37:00,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:37:00,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 10:37:00,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-17 10:37:00,044 INFO L87 Difference]: Start difference. First operand 436 states and 566 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:37:00,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:37:00,281 INFO L93 Difference]: Finished difference Result 576 states and 750 transitions. [2025-03-17 10:37:00,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 10:37:00,281 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 170 [2025-03-17 10:37:00,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:37:00,283 INFO L225 Difference]: With dead ends: 576 [2025-03-17 10:37:00,283 INFO L226 Difference]: Without dead ends: 445 [2025-03-17 10:37:00,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-03-17 10:37:00,284 INFO L435 NwaCegarLoop]: 304 mSDtfsCounter, 39 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 10:37:00,284 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 1580 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 10:37:00,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2025-03-17 10:37:00,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 438. [2025-03-17 10:37:00,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 433 states have (on average 1.297921478060046) internal successors, (562), 433 states have internal predecessors, (562), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:37:00,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 568 transitions. [2025-03-17 10:37:00,295 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 568 transitions. Word has length 170 [2025-03-17 10:37:00,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:37:00,295 INFO L471 AbstractCegarLoop]: Abstraction has 438 states and 568 transitions. [2025-03-17 10:37:00,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:37:00,295 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 568 transitions. [2025-03-17 10:37:00,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2025-03-17 10:37:00,296 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:37:00,296 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:37:00,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-17 10:37:00,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:37:00,497 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:37:00,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:37:00,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1133471905, now seen corresponding path program 1 times [2025-03-17 10:37:00,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:37:00,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349130781] [2025-03-17 10:37:00,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:37:00,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:37:00,529 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-03-17 10:37:00,583 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-03-17 10:37:00,584 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:37:00,584 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:37:00,701 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 10:37:00,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:37:00,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349130781] [2025-03-17 10:37:00,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349130781] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 10:37:00,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85093766] [2025-03-17 10:37:00,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:37:00,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:37:00,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:37:00,705 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 10:37:00,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-17 10:37:00,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-03-17 10:37:01,147 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-03-17 10:37:01,147 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:37:01,147 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:37:01,151 INFO L256 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-17 10:37:01,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 10:37:01,288 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 10:37:01,288 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 10:37:01,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85093766] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:37:01,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 10:37:01,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-17 10:37:01,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136220658] [2025-03-17 10:37:01,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:37:01,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 10:37:01,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:37:01,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 10:37:01,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-17 10:37:01,289 INFO L87 Difference]: Start difference. First operand 438 states and 568 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:37:01,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:37:01,559 INFO L93 Difference]: Finished difference Result 576 states and 750 transitions. [2025-03-17 10:37:01,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 10:37:01,559 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 170 [2025-03-17 10:37:01,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:37:01,561 INFO L225 Difference]: With dead ends: 576 [2025-03-17 10:37:01,561 INFO L226 Difference]: Without dead ends: 443 [2025-03-17 10:37:01,561 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-17 10:37:01,562 INFO L435 NwaCegarLoop]: 314 mSDtfsCounter, 10 mSDsluCounter, 1260 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 10:37:01,562 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1574 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 10:37:01,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2025-03-17 10:37:01,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 438. [2025-03-17 10:37:01,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 433 states have (on average 1.297921478060046) internal successors, (562), 433 states have internal predecessors, (562), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:37:01,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 568 transitions. [2025-03-17 10:37:01,575 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 568 transitions. Word has length 170 [2025-03-17 10:37:01,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:37:01,576 INFO L471 AbstractCegarLoop]: Abstraction has 438 states and 568 transitions. [2025-03-17 10:37:01,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:37:01,576 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 568 transitions. [2025-03-17 10:37:01,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2025-03-17 10:37:01,577 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:37:01,577 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:37:01,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-17 10:37:01,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:37:01,778 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:37:01,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:37:01,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1840628746, now seen corresponding path program 1 times [2025-03-17 10:37:01,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:37:01,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320752949] [2025-03-17 10:37:01,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:37:01,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:37:01,817 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-03-17 10:37:01,835 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-03-17 10:37:01,835 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:37:01,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:37:02,084 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-17 10:37:02,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:37:02,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320752949] [2025-03-17 10:37:02,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320752949] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:37:02,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:37:02,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 10:37:02,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999509953] [2025-03-17 10:37:02,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:37:02,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 10:37:02,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:37:02,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 10:37:02,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-17 10:37:02,086 INFO L87 Difference]: Start difference. First operand 438 states and 568 transitions. Second operand has 10 states, 10 states have (on average 16.2) internal successors, (162), 10 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:37:02,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:37:02,441 INFO L93 Difference]: Finished difference Result 580 states and 756 transitions. [2025-03-17 10:37:02,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 10:37:02,442 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.2) internal successors, (162), 10 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 170 [2025-03-17 10:37:02,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:37:02,444 INFO L225 Difference]: With dead ends: 580 [2025-03-17 10:37:02,444 INFO L226 Difference]: Without dead ends: 447 [2025-03-17 10:37:02,444 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-03-17 10:37:02,444 INFO L435 NwaCegarLoop]: 319 mSDtfsCounter, 23 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2163 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 10:37:02,445 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2163 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 10:37:02,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2025-03-17 10:37:02,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 441. [2025-03-17 10:37:02,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 436 states have (on average 1.2958715596330275) internal successors, (565), 436 states have internal predecessors, (565), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:37:02,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 571 transitions. [2025-03-17 10:37:02,456 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 571 transitions. Word has length 170 [2025-03-17 10:37:02,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:37:02,456 INFO L471 AbstractCegarLoop]: Abstraction has 441 states and 571 transitions. [2025-03-17 10:37:02,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.2) internal successors, (162), 10 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:37:02,456 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 571 transitions. [2025-03-17 10:37:02,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-03-17 10:37:02,457 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:37:02,457 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:37:02,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-17 10:37:02,458 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:37:02,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:37:02,458 INFO L85 PathProgramCache]: Analyzing trace with hash -744963752, now seen corresponding path program 1 times [2025-03-17 10:37:02,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:37:02,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490599011] [2025-03-17 10:37:02,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:37:02,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:37:02,489 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-17 10:37:02,559 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-17 10:37:02,559 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:37:02,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:37:02,668 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 10:37:02,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:37:02,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490599011] [2025-03-17 10:37:02,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490599011] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 10:37:02,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216632313] [2025-03-17 10:37:02,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:37:02,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:37:02,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:37:02,672 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 10:37:02,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-17 10:37:02,941 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-03-17 10:37:03,051 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-03-17 10:37:03,051 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:37:03,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:37:03,054 INFO L256 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-17 10:37:03,057 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 10:37:03,189 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:37:03,189 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 10:37:03,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216632313] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:37:03,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 10:37:03,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-17 10:37:03,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119348000] [2025-03-17 10:37:03,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:37:03,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 10:37:03,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:37:03,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 10:37:03,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-17 10:37:03,190 INFO L87 Difference]: Start difference. First operand 441 states and 571 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:37:03,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:37:03,418 INFO L93 Difference]: Finished difference Result 833 states and 1087 transitions. [2025-03-17 10:37:03,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 10:37:03,419 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 171 [2025-03-17 10:37:03,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:37:03,420 INFO L225 Difference]: With dead ends: 833 [2025-03-17 10:37:03,420 INFO L226 Difference]: Without dead ends: 451 [2025-03-17 10:37:03,421 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-17 10:37:03,422 INFO L435 NwaCegarLoop]: 314 mSDtfsCounter, 12 mSDsluCounter, 1260 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 10:37:03,422 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1574 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 10:37:03,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2025-03-17 10:37:03,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 441. [2025-03-17 10:37:03,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 436 states have (on average 1.2958715596330275) internal successors, (565), 436 states have internal predecessors, (565), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:37:03,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 571 transitions. [2025-03-17 10:37:03,431 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 571 transitions. Word has length 171 [2025-03-17 10:37:03,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:37:03,431 INFO L471 AbstractCegarLoop]: Abstraction has 441 states and 571 transitions. [2025-03-17 10:37:03,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:37:03,432 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 571 transitions. [2025-03-17 10:37:03,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-17 10:37:03,432 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:37:03,433 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:37:03,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-17 10:37:03,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:37:03,634 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:37:03,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:37:03,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1855667365, now seen corresponding path program 1 times [2025-03-17 10:37:03,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:37:03,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415415562] [2025-03-17 10:37:03,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:37:03,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:37:03,665 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-17 10:37:03,681 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-17 10:37:03,682 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:37:03,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:37:03,903 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:37:03,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:37:03,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415415562] [2025-03-17 10:37:03,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415415562] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:37:03,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:37:03,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-17 10:37:03,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122101342] [2025-03-17 10:37:03,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:37:03,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 10:37:03,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:37:03,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 10:37:03,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-17 10:37:03,905 INFO L87 Difference]: Start difference. First operand 441 states and 571 transitions. Second operand has 9 states, 9 states have (on average 18.333333333333332) internal successors, (165), 9 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:37:04,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:37:04,110 INFO L93 Difference]: Finished difference Result 838 states and 1091 transitions. [2025-03-17 10:37:04,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 10:37:04,110 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.333333333333332) internal successors, (165), 9 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 172 [2025-03-17 10:37:04,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:37:04,111 INFO L225 Difference]: With dead ends: 838 [2025-03-17 10:37:04,111 INFO L226 Difference]: Without dead ends: 461 [2025-03-17 10:37:04,112 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 10:37:04,112 INFO L435 NwaCegarLoop]: 309 mSDtfsCounter, 20 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 10:37:04,112 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1663 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 10:37:04,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2025-03-17 10:37:04,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 451. [2025-03-17 10:37:04,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 446 states have (on average 1.295964125560538) internal successors, (578), 446 states have internal predecessors, (578), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:37:04,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 584 transitions. [2025-03-17 10:37:04,122 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 584 transitions. Word has length 172 [2025-03-17 10:37:04,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:37:04,122 INFO L471 AbstractCegarLoop]: Abstraction has 451 states and 584 transitions. [2025-03-17 10:37:04,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.333333333333332) internal successors, (165), 9 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:37:04,122 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 584 transitions. [2025-03-17 10:37:04,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-03-17 10:37:04,124 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:37:04,124 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:37:04,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-17 10:37:04,124 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:37:04,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:37:04,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1455649180, now seen corresponding path program 1 times [2025-03-17 10:37:04,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:37:04,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832574774] [2025-03-17 10:37:04,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:37:04,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:37:04,157 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-17 10:37:04,216 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-17 10:37:04,217 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:37:04,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:37:04,322 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 10:37:04,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:37:04,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832574774] [2025-03-17 10:37:04,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832574774] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 10:37:04,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044414] [2025-03-17 10:37:04,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:37:04,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:37:04,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:37:04,325 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 10:37:04,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-17 10:37:04,607 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-03-17 10:37:04,712 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-03-17 10:37:04,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:37:04,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:37:04,715 INFO L256 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-17 10:37:04,718 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 10:37:04,774 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:37:04,775 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 10:37:04,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044414] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:37:04,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 10:37:04,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-17 10:37:04,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552229153] [2025-03-17 10:37:04,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:37:04,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 10:37:04,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:37:04,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 10:37:04,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-17 10:37:04,776 INFO L87 Difference]: Start difference. First operand 451 states and 584 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:37:04,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:37:04,980 INFO L93 Difference]: Finished difference Result 841 states and 1096 transitions. [2025-03-17 10:37:04,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 10:37:04,981 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 172 [2025-03-17 10:37:04,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:37:04,982 INFO L225 Difference]: With dead ends: 841 [2025-03-17 10:37:04,982 INFO L226 Difference]: Without dead ends: 461 [2025-03-17 10:37:04,983 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-17 10:37:04,983 INFO L435 NwaCegarLoop]: 306 mSDtfsCounter, 17 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 10:37:04,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1578 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 10:37:04,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2025-03-17 10:37:04,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 455. [2025-03-17 10:37:04,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 450 states have (on average 1.2933333333333332) internal successors, (582), 450 states have internal predecessors, (582), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:37:04,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 588 transitions. [2025-03-17 10:37:04,996 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 588 transitions. Word has length 172 [2025-03-17 10:37:04,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:37:04,996 INFO L471 AbstractCegarLoop]: Abstraction has 455 states and 588 transitions. [2025-03-17 10:37:04,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:37:04,996 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 588 transitions. [2025-03-17 10:37:04,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2025-03-17 10:37:04,997 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:37:04,997 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:37:05,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-17 10:37:05,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-03-17 10:37:05,198 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:37:05,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:37:05,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1243915312, now seen corresponding path program 1 times [2025-03-17 10:37:05,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:37:05,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188666606] [2025-03-17 10:37:05,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:37:05,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:37:05,239 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-03-17 10:37:05,262 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-03-17 10:37:05,263 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:37:05,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:37:05,532 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:37:05,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:37:05,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188666606] [2025-03-17 10:37:05,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188666606] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:37:05,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:37:05,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 10:37:05,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844249437] [2025-03-17 10:37:05,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:37:05,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 10:37:05,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:37:05,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 10:37:05,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-17 10:37:05,534 INFO L87 Difference]: Start difference. First operand 455 states and 588 transitions. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:37:05,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:37:05,899 INFO L93 Difference]: Finished difference Result 864 states and 1125 transitions. [2025-03-17 10:37:05,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 10:37:05,900 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 173 [2025-03-17 10:37:05,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:37:05,901 INFO L225 Difference]: With dead ends: 864 [2025-03-17 10:37:05,901 INFO L226 Difference]: Without dead ends: 477 [2025-03-17 10:37:05,901 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-03-17 10:37:05,902 INFO L435 NwaCegarLoop]: 315 mSDtfsCounter, 23 mSDsluCounter, 2073 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2388 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 10:37:05,902 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2388 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 10:37:05,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2025-03-17 10:37:05,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 465. [2025-03-17 10:37:05,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 460 states have (on average 1.2891304347826087) internal successors, (593), 460 states have internal predecessors, (593), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:37:05,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 599 transitions. [2025-03-17 10:37:05,912 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 599 transitions. Word has length 173 [2025-03-17 10:37:05,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:37:05,912 INFO L471 AbstractCegarLoop]: Abstraction has 465 states and 599 transitions. [2025-03-17 10:37:05,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:37:05,912 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 599 transitions. [2025-03-17 10:37:05,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2025-03-17 10:37:05,913 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:37:05,913 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:37:05,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-03-17 10:37:05,913 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:37:05,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:37:05,913 INFO L85 PathProgramCache]: Analyzing trace with hash 967596501, now seen corresponding path program 1 times [2025-03-17 10:37:05,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:37:05,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522208420] [2025-03-17 10:37:05,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:37:05,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:37:05,947 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-03-17 10:37:05,990 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-03-17 10:37:05,990 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:37:05,990 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:37:06,107 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 10:37:06,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:37:06,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522208420] [2025-03-17 10:37:06,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522208420] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 10:37:06,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174362824] [2025-03-17 10:37:06,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:37:06,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:37:06,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:37:06,109 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 10:37:06,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-17 10:37:06,387 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-03-17 10:37:06,782 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-03-17 10:37:06,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:37:06,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:37:06,792 INFO L256 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-17 10:37:06,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 10:37:07,070 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:37:07,070 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 10:37:07,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174362824] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:37:07,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 10:37:07,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-03-17 10:37:07,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958696209] [2025-03-17 10:37:07,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:37:07,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 10:37:07,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:37:07,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 10:37:07,072 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-17 10:37:07,072 INFO L87 Difference]: Start difference. First operand 465 states and 599 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:37:07,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:37:07,471 INFO L93 Difference]: Finished difference Result 869 states and 1129 transitions. [2025-03-17 10:37:07,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 10:37:07,471 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 173 [2025-03-17 10:37:07,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:37:07,473 INFO L225 Difference]: With dead ends: 869 [2025-03-17 10:37:07,473 INFO L226 Difference]: Without dead ends: 475 [2025-03-17 10:37:07,473 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-17 10:37:07,474 INFO L435 NwaCegarLoop]: 314 mSDtfsCounter, 10 mSDsluCounter, 1260 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-17 10:37:07,474 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1574 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-17 10:37:07,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2025-03-17 10:37:07,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 465. [2025-03-17 10:37:07,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 460 states have (on average 1.2891304347826087) internal successors, (593), 460 states have internal predecessors, (593), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-17 10:37:07,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 599 transitions. [2025-03-17 10:37:07,483 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 599 transitions. Word has length 173 [2025-03-17 10:37:07,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:37:07,483 INFO L471 AbstractCegarLoop]: Abstraction has 465 states and 599 transitions. [2025-03-17 10:37:07,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:37:07,483 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 599 transitions. [2025-03-17 10:37:07,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2025-03-17 10:37:07,484 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:37:07,484 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:37:07,499 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-03-17 10:37:07,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-03-17 10:37:07,689 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:37:07,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:37:07,693 INFO L85 PathProgramCache]: Analyzing trace with hash -815513103, now seen corresponding path program 1 times [2025-03-17 10:37:07,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:37:07,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297226758] [2025-03-17 10:37:07,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:37:07,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:37:07,731 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-03-17 10:37:07,808 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-03-17 10:37:07,808 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:37:07,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:37:07,915 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 10:37:07,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:37:07,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297226758] [2025-03-17 10:37:07,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297226758] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 10:37:07,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348247947] [2025-03-17 10:37:07,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:37:07,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:37:07,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:37:07,918 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 10:37:07,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-03-17 10:37:08,213 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-03-17 10:37:08,816 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-03-17 10:37:08,816 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:37:08,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:37:08,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 10:37:08,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 10:37:08,834 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:37:08,834 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 10:37:08,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348247947] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:37:08,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 10:37:08,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2025-03-17 10:37:08,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474130816] [2025-03-17 10:37:08,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:37:08,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 10:37:08,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:37:08,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 10:37:08,835 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 10:37:08,835 INFO L87 Difference]: Start difference. First operand 465 states and 599 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 10:37:08,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:37:08,882 INFO L93 Difference]: Finished difference Result 822 states and 1060 transitions. [2025-03-17 10:37:08,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 10:37:08,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 173 [2025-03-17 10:37:08,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:37:08,886 INFO L225 Difference]: With dead ends: 822 [2025-03-17 10:37:08,886 INFO L226 Difference]: Without dead ends: 468 [2025-03-17 10:37:08,887 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 10:37:08,887 INFO L435 NwaCegarLoop]: 323 mSDtfsCounter, 0 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 10:37:08,888 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 965 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 10:37:08,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2025-03-17 10:37:08,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 468. [2025-03-17 10:37:08,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 462 states have (on average 1.29004329004329) internal successors, (596), 463 states have internal predecessors, (596), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-17 10:37:08,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 603 transitions. [2025-03-17 10:37:08,899 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 603 transitions. Word has length 173 [2025-03-17 10:37:08,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:37:08,899 INFO L471 AbstractCegarLoop]: Abstraction has 468 states and 603 transitions. [2025-03-17 10:37:08,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-17 10:37:08,899 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 603 transitions. [2025-03-17 10:37:08,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2025-03-17 10:37:08,900 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:37:08,900 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:37:08,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-03-17 10:37:09,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-03-17 10:37:09,101 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:37:09,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:37:09,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1036031477, now seen corresponding path program 1 times [2025-03-17 10:37:09,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:37:09,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6400539] [2025-03-17 10:37:09,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:37:09,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:37:09,142 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 175 statements into 1 equivalence classes. [2025-03-17 10:37:09,180 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 175 of 175 statements. [2025-03-17 10:37:09,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:37:09,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:37:09,437 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 10:37:09,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:37:09,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6400539] [2025-03-17 10:37:09,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6400539] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 10:37:09,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516169501] [2025-03-17 10:37:09,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:37:09,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:37:09,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:37:09,439 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 10:37:09,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-03-17 10:37:09,747 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 175 statements into 1 equivalence classes. [2025-03-17 10:37:09,842 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 175 of 175 statements. [2025-03-17 10:37:09,842 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:37:09,842 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:37:09,846 INFO L256 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-03-17 10:37:09,849 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 10:37:10,158 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-03-17 10:37:10,158 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 10:37:10,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516169501] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:37:10,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 10:37:10,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2025-03-17 10:37:10,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826206374] [2025-03-17 10:37:10,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:37:10,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-17 10:37:10,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:37:10,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-17 10:37:10,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2025-03-17 10:37:10,160 INFO L87 Difference]: Start difference. First operand 468 states and 603 transitions. Second operand has 10 states, 10 states have (on average 16.7) internal successors, (167), 10 states have internal predecessors, (167), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:37:10,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:37:10,874 INFO L93 Difference]: Finished difference Result 895 states and 1164 transitions. [2025-03-17 10:37:10,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 10:37:10,875 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.7) internal successors, (167), 10 states have internal predecessors, (167), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 175 [2025-03-17 10:37:10,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:37:10,876 INFO L225 Difference]: With dead ends: 895 [2025-03-17 10:37:10,876 INFO L226 Difference]: Without dead ends: 498 [2025-03-17 10:37:10,877 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2025-03-17 10:37:10,877 INFO L435 NwaCegarLoop]: 315 mSDtfsCounter, 17 mSDsluCounter, 2076 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2391 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-17 10:37:10,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2391 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-17 10:37:10,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2025-03-17 10:37:10,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 492. [2025-03-17 10:37:10,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 486 states have (on average 1.2880658436213992) internal successors, (626), 487 states have internal predecessors, (626), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-17 10:37:10,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 633 transitions. [2025-03-17 10:37:10,892 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 633 transitions. Word has length 175 [2025-03-17 10:37:10,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:37:10,893 INFO L471 AbstractCegarLoop]: Abstraction has 492 states and 633 transitions. [2025-03-17 10:37:10,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.7) internal successors, (167), 10 states have internal predecessors, (167), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-17 10:37:10,893 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 633 transitions. [2025-03-17 10:37:10,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2025-03-17 10:37:10,894 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:37:10,894 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:37:10,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-03-17 10:37:11,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-03-17 10:37:11,095 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:37:11,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:37:11,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1502538697, now seen corresponding path program 1 times [2025-03-17 10:37:11,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:37:11,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937343771] [2025-03-17 10:37:11,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:37:11,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:37:11,148 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-17 10:37:11,223 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-17 10:37:11,223 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:37:11,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:37:11,392 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-17 10:37:11,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:37:11,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937343771] [2025-03-17 10:37:11,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937343771] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 10:37:11,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876333623] [2025-03-17 10:37:11,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:37:11,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:37:11,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:37:11,395 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 10:37:11,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-03-17 10:37:11,707 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 176 statements into 1 equivalence classes. [2025-03-17 10:37:11,848 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 176 of 176 statements. [2025-03-17 10:37:11,848 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:37:11,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:37:11,853 INFO L256 TraceCheckSpWp]: Trace formula consists of 792 conjuncts, 110 conjuncts are in the unsatisfiable core [2025-03-17 10:37:11,858 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 10:37:11,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-03-17 10:37:11,993 INFO L349 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2025-03-17 10:37:11,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2025-03-17 10:37:12,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-03-17 10:37:12,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-03-17 10:37:12,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2025-03-17 10:37:12,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2025-03-17 10:37:12,164 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-03-17 10:37:12,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2025-03-17 10:37:12,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2025-03-17 10:37:15,764 INFO L224 Elim1Store]: Index analysis took 211 ms