./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_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_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 2a3326bc22943076798f4c55311213b2a5f9b1e03e68dc17c2ac5a3393252251 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 10:38:09,448 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 10:38:09,511 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-17 10:38:09,516 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 10:38:09,516 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 10:38:09,534 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 10:38:09,535 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 10:38:09,535 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 10:38:09,535 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 10:38:09,536 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 10:38:09,536 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 10:38:09,536 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 10:38:09,537 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 10:38:09,537 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 10:38:09,537 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 10:38:09,537 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 10:38:09,537 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 10:38:09,537 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 10:38:09,538 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 10:38:09,538 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 10:38:09,538 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 10:38:09,538 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 10:38:09,538 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 10:38:09,538 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 10:38:09,538 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 10:38:09,538 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 10:38:09,538 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 10:38:09,538 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 10:38:09,538 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 10:38:09,538 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 10:38:09,539 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 10:38:09,539 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 10:38:09,539 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 10:38:09,539 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 10:38:09,539 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 10:38:09,539 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 10:38:09,539 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 10:38:09,539 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 10:38:09,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 10:38:09,540 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 10:38:09,540 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 10:38:09,540 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 10:38:09,540 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 10:38:09,540 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 -> 2a3326bc22943076798f4c55311213b2a5f9b1e03e68dc17c2ac5a3393252251 [2025-03-17 10:38:09,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 10:38:09,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 10:38:09,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 10:38:09,807 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 10:38:09,807 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 10:38:09,808 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i [2025-03-17 10:38:11,034 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f545c176e/abac672eae2f401d856590605eafb305/FLAGd7df0c474 [2025-03-17 10:38:11,366 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 10:38:11,367 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test2-2.i [2025-03-17 10:38:11,381 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f545c176e/abac672eae2f401d856590605eafb305/FLAGd7df0c474 [2025-03-17 10:38:11,395 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f545c176e/abac672eae2f401d856590605eafb305 [2025-03-17 10:38:11,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 10:38:11,400 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 10:38:11,401 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 10:38:11,401 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 10:38:11,406 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 10:38:11,407 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 10:38:11" (1/1) ... [2025-03-17 10:38:11,409 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9bc58a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:38:11, skipping insertion in model container [2025-03-17 10:38:11,409 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 10:38:11" (1/1) ... [2025-03-17 10:38:11,453 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 10:38:11,708 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_test2-2.i[37019,37032] [2025-03-17 10:38:11,786 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_test2-2.i[47352,47365] [2025-03-17 10:38:11,801 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 10:38:11,810 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 10:38:11,847 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_test2-2.i[37019,37032] [2025-03-17 10:38:11,891 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_test2-2.i[47352,47365] [2025-03-17 10:38:11,902 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 10:38:11,938 INFO L204 MainTranslator]: Completed translation [2025-03-17 10:38:11,939 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:38:11 WrapperNode [2025-03-17 10:38:11,940 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 10:38:11,940 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 10:38:11,941 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 10:38:11,941 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 10:38:11,945 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:38:11" (1/1) ... [2025-03-17 10:38:11,962 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:38:11" (1/1) ... [2025-03-17 10:38:12,007 INFO L138 Inliner]: procedures = 208, calls = 278, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1423 [2025-03-17 10:38:12,007 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 10:38:12,008 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 10:38:12,008 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 10:38:12,008 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 10:38:12,015 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:38:11" (1/1) ... [2025-03-17 10:38:12,016 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:38:11" (1/1) ... [2025-03-17 10:38:12,027 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:38:11" (1/1) ... [2025-03-17 10:38:12,091 INFO L175 MemorySlicer]: Split 256 memory accesses to 3 slices as follows [2, 34, 220]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 4, 50]. [2025-03-17 10:38:12,091 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:38:11" (1/1) ... [2025-03-17 10:38:12,091 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:38:11" (1/1) ... [2025-03-17 10:38:12,120 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:38:11" (1/1) ... [2025-03-17 10:38:12,127 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:38:11" (1/1) ... [2025-03-17 10:38:12,131 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:38:11" (1/1) ... [2025-03-17 10:38:12,139 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:38:11" (1/1) ... [2025-03-17 10:38:12,150 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 10:38:12,151 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 10:38:12,151 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 10:38:12,152 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 10:38:12,152 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:38:11" (1/1) ... [2025-03-17 10:38:12,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 10:38:12,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:38:12,180 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 10:38:12,186 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 10:38:12,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-17 10:38:12,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-17 10:38:12,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-17 10:38:12,207 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-17 10:38:12,207 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-17 10:38:12,207 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-17 10:38:12,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 10:38:12,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-17 10:38:12,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-17 10:38:12,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-17 10:38:12,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 10:38:12,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 10:38:12,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 10:38:12,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-17 10:38:12,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-17 10:38:12,207 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-17 10:38:12,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 10:38:12,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 10:38:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-17 10:38:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 10:38:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 10:38:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-17 10:38:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-17 10:38:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-17 10:38:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 10:38:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 10:38:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-17 10:38:12,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 10:38:12,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 10:38:12,379 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 10:38:12,381 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 10:38:13,481 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 10:38:13,558 INFO L? ?]: Removed 328 outVars from TransFormulas that were not future-live. [2025-03-17 10:38:13,559 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 10:38:13,605 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 10:38:13,605 INFO L336 CfgBuilder]: Removed 1 assume(true) statements. [2025-03-17 10:38:13,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 10:38:13 BoogieIcfgContainer [2025-03-17 10:38:13,606 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 10:38:13,610 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 10:38:13,610 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 10:38:13,613 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 10:38:13,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 10:38:11" (1/3) ... [2025-03-17 10:38:13,614 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb632a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 10:38:13, skipping insertion in model container [2025-03-17 10:38:13,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:38:11" (2/3) ... [2025-03-17 10:38:13,614 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb632a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 10:38:13, skipping insertion in model container [2025-03-17 10:38:13,615 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 10:38:13" (3/3) ... [2025-03-17 10:38:13,615 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test2-2.i [2025-03-17 10:38:13,628 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 10:38:13,629 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SFH_test2-2.i that has 5 procedures, 415 locations, 1 initial locations, 36 loop locations, and 2 error locations. [2025-03-17 10:38:13,683 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:38:13,693 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;@64b9e044, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:38:13,693 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-03-17 10:38:13,698 INFO L276 IsEmpty]: Start isEmpty. Operand has 407 states, 394 states have (on average 1.6243654822335025) internal successors, (640), 401 states have internal predecessors, (640), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-17 10:38:13,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-17 10:38:13,702 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:38:13,702 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:38:13,703 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:38:13,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:38:13,706 INFO L85 PathProgramCache]: Analyzing trace with hash 624587612, now seen corresponding path program 1 times [2025-03-17 10:38:13,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:38:13,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994736935] [2025-03-17 10:38:13,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:38:13,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:38:13,777 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 10:38:13,784 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 10:38:13,784 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:38:13,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:38:13,824 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 10:38:13,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:38:13,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994736935] [2025-03-17 10:38:13,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994736935] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:38:13,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:38:13,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 10:38:13,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647750789] [2025-03-17 10:38:13,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:38:13,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-17 10:38:13,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:38:13,846 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-17 10:38:13,846 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-17 10:38:13,849 INFO L87 Difference]: Start difference. First operand has 407 states, 394 states have (on average 1.6243654822335025) internal successors, (640), 401 states have internal predecessors, (640), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 10:38:13,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:38:13,959 INFO L93 Difference]: Finished difference Result 813 states and 1316 transitions. [2025-03-17 10:38:13,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-17 10:38:13,961 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-17 10:38:13,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:38:13,971 INFO L225 Difference]: With dead ends: 813 [2025-03-17 10:38:13,971 INFO L226 Difference]: Without dead ends: 370 [2025-03-17 10:38:13,975 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 10:38:13,977 INFO L435 NwaCegarLoop]: 550 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 550 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 10:38:13,977 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 550 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 10:38:13,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2025-03-17 10:38:14,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2025-03-17 10:38:14,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 358 states have (on average 1.4692737430167597) internal successors, (526), 364 states have internal predecessors, (526), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-17 10:38:14,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 542 transitions. [2025-03-17 10:38:14,035 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 542 transitions. Word has length 8 [2025-03-17 10:38:14,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:38:14,035 INFO L471 AbstractCegarLoop]: Abstraction has 370 states and 542 transitions. [2025-03-17 10:38:14,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 10:38:14,035 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 542 transitions. [2025-03-17 10:38:14,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-03-17 10:38:14,040 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:38:14,040 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] [2025-03-17 10:38:14,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 10:38:14,040 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:38:14,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:38:14,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1041894850, now seen corresponding path program 1 times [2025-03-17 10:38:14,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:38:14,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255863672] [2025-03-17 10:38:14,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:38:14,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:38:14,066 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-17 10:38:14,078 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-17 10:38:14,078 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:38:14,078 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:38:14,440 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 10:38:14,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:38:14,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255863672] [2025-03-17 10:38:14,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255863672] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:38:14,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:38:14,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 10:38:14,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733627006] [2025-03-17 10:38:14,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:38:14,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 10:38:14,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:38:14,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 10:38:14,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 10:38:14,444 INFO L87 Difference]: Start difference. First operand 370 states and 542 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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 10:38:14,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:38:14,717 INFO L93 Difference]: Finished difference Result 901 states and 1330 transitions. [2025-03-17 10:38:14,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 10:38:14,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2025-03-17 10:38:14,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:38:14,721 INFO L225 Difference]: With dead ends: 901 [2025-03-17 10:38:14,721 INFO L226 Difference]: Without dead ends: 728 [2025-03-17 10:38:14,722 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-17 10:38:14,723 INFO L435 NwaCegarLoop]: 522 mSDtfsCounter, 512 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 10:38:14,723 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 1515 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 10:38:14,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2025-03-17 10:38:14,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 372. [2025-03-17 10:38:14,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 360 states have (on average 1.4666666666666666) internal successors, (528), 366 states have internal predecessors, (528), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-17 10:38:14,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 544 transitions. [2025-03-17 10:38:14,749 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 544 transitions. Word has length 61 [2025-03-17 10:38:14,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:38:14,749 INFO L471 AbstractCegarLoop]: Abstraction has 372 states and 544 transitions. [2025-03-17 10:38:14,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 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 10:38:14,749 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 544 transitions. [2025-03-17 10:38:14,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2025-03-17 10:38:14,757 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:38:14,757 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] [2025-03-17 10:38:14,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 10:38:14,757 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:38:14,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:38:14,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1364874008, now seen corresponding path program 1 times [2025-03-17 10:38:14,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:38:14,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634949250] [2025-03-17 10:38:14,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:38:14,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:38:14,802 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-03-17 10:38:14,812 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-03-17 10:38:14,812 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:38:14,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:38:15,097 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 10:38:15,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:38:15,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634949250] [2025-03-17 10:38:15,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634949250] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:38:15,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:38:15,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 10:38:15,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077748559] [2025-03-17 10:38:15,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:38:15,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 10:38:15,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:38:15,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 10:38:15,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 10:38:15,099 INFO L87 Difference]: Start difference. First operand 372 states and 544 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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 10:38:15,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:38:15,237 INFO L93 Difference]: Finished difference Result 699 states and 1019 transitions. [2025-03-17 10:38:15,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 10:38:15,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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 135 [2025-03-17 10:38:15,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:38:15,240 INFO L225 Difference]: With dead ends: 699 [2025-03-17 10:38:15,240 INFO L226 Difference]: Without dead ends: 330 [2025-03-17 10:38:15,240 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 10:38:15,241 INFO L435 NwaCegarLoop]: 409 mSDtfsCounter, 30 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1208 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 10:38:15,241 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1208 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 10:38:15,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2025-03-17 10:38:15,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2025-03-17 10:38:15,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 318 states have (on average 1.4182389937106918) internal successors, (451), 324 states have internal predecessors, (451), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-17 10:38:15,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 467 transitions. [2025-03-17 10:38:15,258 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 467 transitions. Word has length 135 [2025-03-17 10:38:15,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:38:15,258 INFO L471 AbstractCegarLoop]: Abstraction has 330 states and 467 transitions. [2025-03-17 10:38:15,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 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 10:38:15,258 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 467 transitions. [2025-03-17 10:38:15,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2025-03-17 10:38:15,261 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:38:15,261 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] [2025-03-17 10:38:15,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 10:38:15,262 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:38:15,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:38:15,262 INFO L85 PathProgramCache]: Analyzing trace with hash 349377519, now seen corresponding path program 1 times [2025-03-17 10:38:15,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:38:15,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680294893] [2025-03-17 10:38:15,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:38:15,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:38:15,310 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-03-17 10:38:15,317 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-03-17 10:38:15,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:38:15,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:38:15,467 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 10:38:15,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:38:15,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680294893] [2025-03-17 10:38:15,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680294893] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:38:15,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:38:15,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 10:38:15,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996259892] [2025-03-17 10:38:15,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:38:15,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 10:38:15,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:38:15,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 10:38:15,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 10:38:15,469 INFO L87 Difference]: Start difference. First operand 330 states and 467 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 10:38:15,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:38:15,552 INFO L93 Difference]: Finished difference Result 657 states and 931 transitions. [2025-03-17 10:38:15,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 10:38:15,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 135 [2025-03-17 10:38:15,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:38:15,554 INFO L225 Difference]: With dead ends: 657 [2025-03-17 10:38:15,554 INFO L226 Difference]: Without dead ends: 330 [2025-03-17 10:38:15,555 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 10:38:15,555 INFO L435 NwaCegarLoop]: 421 mSDtfsCounter, 1 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 10:38:15,555 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 820 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 10:38:15,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2025-03-17 10:38:15,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2025-03-17 10:38:15,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 318 states have (on average 1.4088050314465408) internal successors, (448), 324 states have internal predecessors, (448), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-17 10:38:15,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 464 transitions. [2025-03-17 10:38:15,570 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 464 transitions. Word has length 135 [2025-03-17 10:38:15,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:38:15,570 INFO L471 AbstractCegarLoop]: Abstraction has 330 states and 464 transitions. [2025-03-17 10:38:15,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 10:38:15,570 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 464 transitions. [2025-03-17 10:38:15,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2025-03-17 10:38:15,571 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:38:15,571 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] [2025-03-17 10:38:15,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 10:38:15,571 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:38:15,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:38:15,574 INFO L85 PathProgramCache]: Analyzing trace with hash -727175890, now seen corresponding path program 1 times [2025-03-17 10:38:15,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:38:15,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224724425] [2025-03-17 10:38:15,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:38:15,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:38:15,612 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-03-17 10:38:15,630 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-03-17 10:38:15,631 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:38:15,631 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:38:15,748 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 10:38:15,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:38:15,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224724425] [2025-03-17 10:38:15,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224724425] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:38:15,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:38:15,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 10:38:15,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900587337] [2025-03-17 10:38:15,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:38:15,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 10:38:15,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:38:15,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 10:38:15,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 10:38:15,751 INFO L87 Difference]: Start difference. First operand 330 states and 464 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 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 10:38:15,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:38:15,887 INFO L93 Difference]: Finished difference Result 887 states and 1261 transitions. [2025-03-17 10:38:15,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 10:38:15,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 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 135 [2025-03-17 10:38:15,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:38:15,891 INFO L225 Difference]: With dead ends: 887 [2025-03-17 10:38:15,891 INFO L226 Difference]: Without dead ends: 560 [2025-03-17 10:38:15,892 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 10:38:15,892 INFO L435 NwaCegarLoop]: 602 mSDtfsCounter, 268 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 10:38:15,892 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 1015 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 10:38:15,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2025-03-17 10:38:15,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 558. [2025-03-17 10:38:15,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 541 states have (on average 1.4251386321626618) internal successors, (771), 552 states have internal predecessors, (771), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-17 10:38:15,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 797 transitions. [2025-03-17 10:38:15,915 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 797 transitions. Word has length 135 [2025-03-17 10:38:15,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:38:15,915 INFO L471 AbstractCegarLoop]: Abstraction has 558 states and 797 transitions. [2025-03-17 10:38:15,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 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 10:38:15,916 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 797 transitions. [2025-03-17 10:38:15,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2025-03-17 10:38:15,916 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:38:15,917 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] [2025-03-17 10:38:15,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 10:38:15,917 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:38:15,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:38:15,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1670322580, now seen corresponding path program 1 times [2025-03-17 10:38:15,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:38:15,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384336553] [2025-03-17 10:38:15,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:38:15,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:38:15,961 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-17 10:38:15,979 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-17 10:38:15,979 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:38:15,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:38:16,095 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 10:38:16,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:38:16,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384336553] [2025-03-17 10:38:16,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384336553] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:38:16,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:38:16,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 10:38:16,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902087627] [2025-03-17 10:38:16,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:38:16,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 10:38:16,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:38:16,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 10:38:16,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 10:38:16,098 INFO L87 Difference]: Start difference. First operand 558 states and 797 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 10:38:16,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:38:16,213 INFO L93 Difference]: Finished difference Result 913 states and 1333 transitions. [2025-03-17 10:38:16,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 10:38:16,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 150 [2025-03-17 10:38:16,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:38:16,217 INFO L225 Difference]: With dead ends: 913 [2025-03-17 10:38:16,218 INFO L226 Difference]: Without dead ends: 598 [2025-03-17 10:38:16,220 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 10:38:16,220 INFO L435 NwaCegarLoop]: 407 mSDtfsCounter, 9 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 10:38:16,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 799 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 10:38:16,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2025-03-17 10:38:16,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 598. [2025-03-17 10:38:16,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 581 states have (on average 1.395869191049914) internal successors, (811), 592 states have internal predecessors, (811), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-17 10:38:16,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 837 transitions. [2025-03-17 10:38:16,274 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 837 transitions. Word has length 150 [2025-03-17 10:38:16,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:38:16,274 INFO L471 AbstractCegarLoop]: Abstraction has 598 states and 837 transitions. [2025-03-17 10:38:16,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 10:38:16,275 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 837 transitions. [2025-03-17 10:38:16,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2025-03-17 10:38:16,277 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:38:16,277 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] [2025-03-17 10:38:16,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 10:38:16,277 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:38:16,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:38:16,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1429782451, now seen corresponding path program 1 times [2025-03-17 10:38:16,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:38:16,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917038899] [2025-03-17 10:38:16,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:38:16,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:38:16,318 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-17 10:38:16,338 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-17 10:38:16,339 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:38:16,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:38:16,523 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 10:38:16,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:38:16,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917038899] [2025-03-17 10:38:16,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917038899] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:38:16,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:38:16,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 10:38:16,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255969409] [2025-03-17 10:38:16,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:38:16,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 10:38:16,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:38:16,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 10:38:16,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 10:38:16,524 INFO L87 Difference]: Start difference. First operand 598 states and 837 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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 10:38:16,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:38:16,626 INFO L93 Difference]: Finished difference Result 829 states and 1175 transitions. [2025-03-17 10:38:16,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 10:38:16,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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 150 [2025-03-17 10:38:16,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:38:16,630 INFO L225 Difference]: With dead ends: 829 [2025-03-17 10:38:16,630 INFO L226 Difference]: Without dead ends: 474 [2025-03-17 10:38:16,631 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 10:38:16,633 INFO L435 NwaCegarLoop]: 332 mSDtfsCounter, 32 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-17 10:38:16,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 982 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-17 10:38:16,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2025-03-17 10:38:16,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 474. [2025-03-17 10:38:16,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 457 states have (on average 1.336980306345733) internal successors, (611), 468 states have internal predecessors, (611), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-17 10:38:16,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 637 transitions. [2025-03-17 10:38:16,651 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 637 transitions. Word has length 150 [2025-03-17 10:38:16,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:38:16,652 INFO L471 AbstractCegarLoop]: Abstraction has 474 states and 637 transitions. [2025-03-17 10:38:16,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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 10:38:16,652 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 637 transitions. [2025-03-17 10:38:16,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2025-03-17 10:38:16,653 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:38:16,653 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] [2025-03-17 10:38:16,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 10:38:16,654 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:38:16,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:38:16,654 INFO L85 PathProgramCache]: Analyzing trace with hash -553959514, now seen corresponding path program 1 times [2025-03-17 10:38:16,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:38:16,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377461367] [2025-03-17 10:38:16,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:38:16,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:38:16,690 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 150 statements into 1 equivalence classes. [2025-03-17 10:38:16,714 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 150 of 150 statements. [2025-03-17 10:38:16,714 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:38:16,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:38:16,835 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 10:38:16,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:38:16,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377461367] [2025-03-17 10:38:16,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377461367] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:38:16,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:38:16,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 10:38:16,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550669444] [2025-03-17 10:38:16,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:38:16,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 10:38:16,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:38:16,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 10:38:16,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 10:38:16,837 INFO L87 Difference]: Start difference. First operand 474 states and 637 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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 10:38:17,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:38:17,088 INFO L93 Difference]: Finished difference Result 759 states and 1018 transitions. [2025-03-17 10:38:17,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 10:38:17,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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 150 [2025-03-17 10:38:17,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:38:17,090 INFO L225 Difference]: With dead ends: 759 [2025-03-17 10:38:17,090 INFO L226 Difference]: Without dead ends: 373 [2025-03-17 10:38:17,091 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 10:38:17,091 INFO L435 NwaCegarLoop]: 413 mSDtfsCounter, 559 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-17 10:38:17,091 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 550 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-17 10:38:17,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2025-03-17 10:38:17,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2025-03-17 10:38:17,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 361 states have (on average 1.3268698060941828) internal successors, (479), 367 states have internal predecessors, (479), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-17 10:38:17,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 495 transitions. [2025-03-17 10:38:17,108 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 495 transitions. Word has length 150 [2025-03-17 10:38:17,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:38:17,108 INFO L471 AbstractCegarLoop]: Abstraction has 373 states and 495 transitions. [2025-03-17 10:38:17,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 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 10:38:17,109 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 495 transitions. [2025-03-17 10:38:17,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2025-03-17 10:38:17,112 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:38:17,112 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] [2025-03-17 10:38:17,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 10:38:17,112 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:38:17,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:38:17,113 INFO L85 PathProgramCache]: Analyzing trace with hash 729415864, now seen corresponding path program 1 times [2025-03-17 10:38:17,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:38:17,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133748285] [2025-03-17 10:38:17,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:38:17,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:38:17,163 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-03-17 10:38:17,215 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-03-17 10:38:17,216 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:38:17,216 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:38:17,777 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:38:17,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:38:17,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133748285] [2025-03-17 10:38:17,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133748285] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 10:38:17,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053327873] [2025-03-17 10:38:17,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:38:17,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:38:17,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:38:17,780 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 10:38:17,781 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 10:38:17,980 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 160 statements into 1 equivalence classes. [2025-03-17 10:38:18,089 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 160 of 160 statements. [2025-03-17 10:38:18,089 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:38:18,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:38:18,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-17 10:38:18,103 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 10:38:18,121 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 10:38:18,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2025-03-17 10:38:18,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-17 10:38:18,320 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:38:18,320 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 10:38:18,488 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:38:18,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053327873] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 10:38:18,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 10:38:18,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2025-03-17 10:38:18,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831677801] [2025-03-17 10:38:18,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 10:38:18,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 10:38:18,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:38:18,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 10:38:18,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2025-03-17 10:38:18,490 INFO L87 Difference]: Start difference. First operand 373 states and 495 transitions. Second operand has 11 states, 11 states have (on average 28.818181818181817) internal successors, (317), 11 states have internal predecessors, (317), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-17 10:38:18,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:38:18,880 INFO L93 Difference]: Finished difference Result 1237 states and 1654 transitions. [2025-03-17 10:38:18,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-17 10:38:18,880 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 28.818181818181817) internal successors, (317), 11 states have internal predecessors, (317), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 160 [2025-03-17 10:38:18,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:38:18,884 INFO L225 Difference]: With dead ends: 1237 [2025-03-17 10:38:18,884 INFO L226 Difference]: Without dead ends: 1106 [2025-03-17 10:38:18,885 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 313 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2025-03-17 10:38:18,885 INFO L435 NwaCegarLoop]: 372 mSDtfsCounter, 1433 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 2335 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 10:38:18,885 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1447 Valid, 2335 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 10:38:18,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2025-03-17 10:38:18,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 713. [2025-03-17 10:38:18,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 697 states have (on average 1.3242467718794835) internal successors, (923), 703 states have internal predecessors, (923), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2025-03-17 10:38:18,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 945 transitions. [2025-03-17 10:38:18,911 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 945 transitions. Word has length 160 [2025-03-17 10:38:18,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:38:18,911 INFO L471 AbstractCegarLoop]: Abstraction has 713 states and 945 transitions. [2025-03-17 10:38:18,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 28.818181818181817) internal successors, (317), 11 states have internal predecessors, (317), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-17 10:38:18,911 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 945 transitions. [2025-03-17 10:38:18,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2025-03-17 10:38:18,914 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:38:18,915 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2025-03-17 10:38:18,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 10:38:19,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:38:19,120 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:38:19,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:38:19,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1987846012, now seen corresponding path program 1 times [2025-03-17 10:38:19,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:38:19,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351567904] [2025-03-17 10:38:19,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:38:19,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:38:19,228 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 382 statements into 1 equivalence classes. [2025-03-17 10:38:19,377 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 382 of 382 statements. [2025-03-17 10:38:19,377 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:38:19,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:38:22,213 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 446 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:38:22,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:38:22,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351567904] [2025-03-17 10:38:22,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351567904] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 10:38:22,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268616192] [2025-03-17 10:38:22,213 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:38:22,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 10:38:22,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:38:22,216 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 10:38:22,218 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 10:38:22,554 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 382 statements into 1 equivalence classes. [2025-03-17 10:38:22,787 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 382 of 382 statements. [2025-03-17 10:38:22,787 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:38:22,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:38:22,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 1893 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-17 10:38:22,819 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 10:38:22,825 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 10:38:23,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2025-03-17 10:38:23,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-03-17 10:38:23,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-03-17 10:38:23,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-03-17 10:38:23,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-17 10:38:23,321 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 446 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:38:23,322 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 10:38:23,760 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 446 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-17 10:38:23,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268616192] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 10:38:23,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 10:38:23,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 20 [2025-03-17 10:38:23,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501926439] [2025-03-17 10:38:23,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 10:38:23,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-17 10:38:23,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:38:23,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-17 10:38:23,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=236, Unknown=0, NotChecked=0, Total=380 [2025-03-17 10:38:23,765 INFO L87 Difference]: Start difference. First operand 713 states and 945 transitions. Second operand has 20 states, 20 states have (on average 38.35) internal successors, (767), 20 states have internal predecessors, (767), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-17 10:38:24,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:38:24,487 INFO L93 Difference]: Finished difference Result 2455 states and 3289 transitions. [2025-03-17 10:38:24,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-17 10:38:24,487 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 38.35) internal successors, (767), 20 states have internal predecessors, (767), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 382 [2025-03-17 10:38:24,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:38:24,497 INFO L225 Difference]: With dead ends: 2455 [2025-03-17 10:38:24,497 INFO L226 Difference]: Without dead ends: 2324 [2025-03-17 10:38:24,499 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 782 GetRequests, 755 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=223, Invalid=427, Unknown=0, NotChecked=0, Total=650 [2025-03-17 10:38:24,499 INFO L435 NwaCegarLoop]: 372 mSDtfsCounter, 5646 mSDsluCounter, 3953 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5681 SdHoareTripleChecker+Valid, 4325 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-17 10:38:24,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5681 Valid, 4325 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-17 10:38:24,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2324 states. [2025-03-17 10:38:24,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2324 to 1559. [2025-03-17 10:38:24,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1537 states have (on average 1.3227065712426807) internal successors, (2033), 1543 states have internal predecessors, (2033), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-17 10:38:24,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 2067 transitions. [2025-03-17 10:38:24,547 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 2067 transitions. Word has length 382 [2025-03-17 10:38:24,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:38:24,548 INFO L471 AbstractCegarLoop]: Abstraction has 1559 states and 2067 transitions. [2025-03-17 10:38:24,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 38.35) internal successors, (767), 20 states have internal predecessors, (767), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-17 10:38:24,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 2067 transitions. [2025-03-17 10:38:24,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2025-03-17 10:38:24,561 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:38:24,562 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 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] [2025-03-17 10:38:24,573 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 10:38:24,766 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,SelfDestructingSolverStorable9 [2025-03-17 10:38:24,766 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:38:24,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:38:24,767 INFO L85 PathProgramCache]: Analyzing trace with hash 855502852, now seen corresponding path program 2 times [2025-03-17 10:38:24,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:38:24,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982320219] [2025-03-17 10:38:24,767 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 10:38:24,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:38:24,983 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 826 statements into 2 equivalence classes. [2025-03-17 10:38:25,010 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 71 of 826 statements. [2025-03-17 10:38:25,011 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 10:38:25,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:38:25,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3336 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3336 trivial. 0 not checked. [2025-03-17 10:38:25,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:38:25,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982320219] [2025-03-17 10:38:25,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982320219] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:38:25,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:38:25,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 10:38:25,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112242049] [2025-03-17 10:38:25,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:38:25,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 10:38:25,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:38:25,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 10:38:25,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 10:38:25,108 INFO L87 Difference]: Start difference. First operand 1559 states and 2067 transitions. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 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 10:38:25,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:38:25,429 INFO L93 Difference]: Finished difference Result 1729 states and 2298 transitions. [2025-03-17 10:38:25,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 10:38:25,429 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 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 826 [2025-03-17 10:38:25,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:38:25,437 INFO L225 Difference]: With dead ends: 1729 [2025-03-17 10:38:25,437 INFO L226 Difference]: Without dead ends: 1599 [2025-03-17 10:38:25,438 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-17 10:38:25,440 INFO L435 NwaCegarLoop]: 360 mSDtfsCounter, 80 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 10:38:25,440 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 1547 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 10:38:25,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1599 states. [2025-03-17 10:38:25,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1599 to 1561. [2025-03-17 10:38:25,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1561 states, 1539 states have (on average 1.322287199480182) internal successors, (2035), 1545 states have internal predecessors, (2035), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-17 10:38:25,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 2069 transitions. [2025-03-17 10:38:25,485 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 2069 transitions. Word has length 826 [2025-03-17 10:38:25,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:38:25,486 INFO L471 AbstractCegarLoop]: Abstraction has 1561 states and 2069 transitions. [2025-03-17 10:38:25,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 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 10:38:25,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 2069 transitions. [2025-03-17 10:38:25,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2025-03-17 10:38:25,499 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:38:25,500 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 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] [2025-03-17 10:38:25,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 10:38:25,500 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:38:25,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:38:25,501 INFO L85 PathProgramCache]: Analyzing trace with hash -2111378991, now seen corresponding path program 1 times [2025-03-17 10:38:25,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:38:25,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307206369] [2025-03-17 10:38:25,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:38:25,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:38:25,691 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 827 statements into 1 equivalence classes. [2025-03-17 10:38:25,981 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 827 of 827 statements. [2025-03-17 10:38:25,981 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:38:25,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:38:27,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3336 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3336 trivial. 0 not checked. [2025-03-17 10:38:27,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:38:27,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307206369] [2025-03-17 10:38:27,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307206369] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:38:27,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:38:27,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 10:38:27,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365818112] [2025-03-17 10:38:27,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:38:27,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 10:38:27,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:38:27,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 10:38:27,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-17 10:38:27,396 INFO L87 Difference]: Start difference. First operand 1561 states and 2069 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 10:38:27,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 10:38:27,704 INFO L93 Difference]: Finished difference Result 1698 states and 2254 transitions. [2025-03-17 10:38:27,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 10:38:27,705 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 827 [2025-03-17 10:38:27,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 10:38:27,713 INFO L225 Difference]: With dead ends: 1698 [2025-03-17 10:38:27,713 INFO L226 Difference]: Without dead ends: 1566 [2025-03-17 10:38:27,714 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-17 10:38:27,714 INFO L435 NwaCegarLoop]: 340 mSDtfsCounter, 14 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1432 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-17 10:38:27,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1432 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-17 10:38:27,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2025-03-17 10:38:27,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1565. [2025-03-17 10:38:27,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 1543 states have (on average 1.322099805573558) internal successors, (2040), 1549 states have internal predecessors, (2040), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2025-03-17 10:38:27,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2074 transitions. [2025-03-17 10:38:27,749 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2074 transitions. Word has length 827 [2025-03-17 10:38:27,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 10:38:27,751 INFO L471 AbstractCegarLoop]: Abstraction has 1565 states and 2074 transitions. [2025-03-17 10:38:27,751 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 10:38:27,751 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2074 transitions. [2025-03-17 10:38:27,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 829 [2025-03-17 10:38:27,757 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 10:38:27,757 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 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] [2025-03-17 10:38:27,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 10:38:27,758 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-17 10:38:27,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:38:27,758 INFO L85 PathProgramCache]: Analyzing trace with hash -411227598, now seen corresponding path program 1 times [2025-03-17 10:38:27,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:38:27,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467760423] [2025-03-17 10:38:27,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:38:27,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:38:27,945 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 828 statements into 1 equivalence classes.