./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 6698dfe763688c38a478c53cfe3bc6bac092e445bf13ef44be53eb6068218c93 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 08:34:26,215 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 08:34:26,257 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 08:34:26,262 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 08:34:26,262 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 08:34:26,285 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 08:34:26,286 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 08:34:26,286 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 08:34:26,286 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 08:34:26,286 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 08:34:26,286 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 08:34:26,286 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 08:34:26,286 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 08:34:26,287 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 08:34:26,287 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 08:34:26,287 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 08:34:26,287 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 08:34:26,287 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 08:34:26,287 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 08:34:26,287 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 08:34:26,287 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 08:34:26,287 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 08:34:26,287 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 08:34:26,287 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 08:34:26,287 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 08:34:26,287 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 08:34:26,287 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 08:34:26,287 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 08:34:26,288 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 08:34:26,288 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 08:34:26,288 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 08:34:26,288 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 08:34:26,288 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 08:34:26,288 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 08:34:26,288 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 08:34:26,288 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 08:34:26,288 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 08:34:26,289 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 08:34:26,289 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 08:34:26,289 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 08:34:26,289 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 08:34:26,289 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 08:34:26,289 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 08:34:26,289 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-jdk21/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 -> 6698dfe763688c38a478c53cfe3bc6bac092e445bf13ef44be53eb6068218c93 [2025-02-06 08:34:26,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 08:34:26,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 08:34:26,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 08:34:26,509 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 08:34:26,510 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 08:34:26,510 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-1.i [2025-02-06 08:34:27,667 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/11e7f1b97/89053ef0dc994a01b8062df63229b419/FLAGd4bb7788b [2025-02-06 08:34:28,033 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 08:34:28,034 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-1.i [2025-02-06 08:34:28,053 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/11e7f1b97/89053ef0dc994a01b8062df63229b419/FLAGd4bb7788b [2025-02-06 08:34:28,068 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/11e7f1b97/89053ef0dc994a01b8062df63229b419 [2025-02-06 08:34:28,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 08:34:28,071 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 08:34:28,072 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 08:34:28,072 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 08:34:28,075 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 08:34:28,076 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 08:34:28" (1/1) ... [2025-02-06 08:34:28,077 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79843003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:34:28, skipping insertion in model container [2025-02-06 08:34:28,077 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 08:34:28" (1/1) ... [2025-02-06 08:34:28,120 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 08:34:28,446 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-1.i[33021,33034] [2025-02-06 08:34:28,614 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-1.i[84583,84596] [2025-02-06 08:34:28,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 08:34:28,626 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 08:34:28,650 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-1.i[33021,33034] [2025-02-06 08:34:28,721 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test9-1.i[84583,84596] [2025-02-06 08:34:28,724 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 08:34:28,744 INFO L204 MainTranslator]: Completed translation [2025-02-06 08:34:28,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:34:28 WrapperNode [2025-02-06 08:34:28,746 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 08:34:28,746 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 08:34:28,746 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 08:34:28,747 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 08:34:28,751 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:34:28" (1/1) ... [2025-02-06 08:34:28,775 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:34:28" (1/1) ... [2025-02-06 08:34:28,851 INFO L138 Inliner]: procedures = 177, calls = 722, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3244 [2025-02-06 08:34:28,852 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 08:34:28,852 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 08:34:28,852 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 08:34:28,852 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 08:34:28,859 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:34:28" (1/1) ... [2025-02-06 08:34:28,860 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:34:28" (1/1) ... [2025-02-06 08:34:28,878 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:34:28" (1/1) ... [2025-02-06 08:34:28,937 INFO L175 MemorySlicer]: Split 208 memory accesses to 3 slices as follows [2, 34, 172]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 46 writes are split as follows [0, 4, 42]. [2025-02-06 08:34:28,937 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:34:28" (1/1) ... [2025-02-06 08:34:28,937 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:34:28" (1/1) ... [2025-02-06 08:34:29,016 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:34:28" (1/1) ... [2025-02-06 08:34:29,024 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:34:28" (1/1) ... [2025-02-06 08:34:29,033 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:34:28" (1/1) ... [2025-02-06 08:34:29,040 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:34:28" (1/1) ... [2025-02-06 08:34:29,052 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 08:34:29,053 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 08:34:29,053 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 08:34:29,053 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 08:34:29,054 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:34:28" (1/1) ... [2025-02-06 08:34:29,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 08:34:29,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:34:29,080 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 08:34:29,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 08:34:29,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 08:34:29,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 08:34:29,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 08:34:29,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-06 08:34:29,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-06 08:34:29,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 08:34:29,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 08:34:29,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 08:34:29,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-06 08:34:29,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-06 08:34:29,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-02-06 08:34:29,099 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-06 08:34:29,099 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-06 08:34:29,099 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-02-06 08:34:29,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 08:34:29,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 08:34:29,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 08:34:29,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 08:34:29,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-06 08:34:29,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 08:34:29,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 08:34:29,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 08:34:29,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-06 08:34:29,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 08:34:29,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 08:34:29,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 08:34:29,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 08:34:29,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 08:34:29,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 08:34:29,265 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 08:34:29,266 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 08:34:31,245 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L2218: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-02-06 08:34:31,398 INFO L? ?]: Removed 797 outVars from TransFormulas that were not future-live. [2025-02-06 08:34:31,398 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 08:34:31,465 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 08:34:31,466 INFO L337 CfgBuilder]: Removed 1 assume(true) statements. [2025-02-06 08:34:31,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 08:34:31 BoogieIcfgContainer [2025-02-06 08:34:31,467 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 08:34:31,468 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 08:34:31,469 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 08:34:31,472 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 08:34:31,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 08:34:28" (1/3) ... [2025-02-06 08:34:31,473 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241a8716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 08:34:31, skipping insertion in model container [2025-02-06 08:34:31,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:34:28" (2/3) ... [2025-02-06 08:34:31,473 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241a8716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 08:34:31, skipping insertion in model container [2025-02-06 08:34:31,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 08:34:31" (3/3) ... [2025-02-06 08:34:31,474 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_BER_test9-1.i [2025-02-06 08:34:31,483 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 08:34:31,485 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_BER_test9-1.i that has 5 procedures, 1376 locations, 1 initial locations, 33 loop locations, and 2 error locations. [2025-02-06 08:34:31,589 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 08:34:31,597 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;@d4481cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 08:34:31,597 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-06 08:34:31,604 INFO L276 IsEmpty]: Start isEmpty. Operand has 1368 states, 860 states have (on average 1.8372093023255813) internal successors, (1580), 1362 states have internal predecessors, (1580), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2025-02-06 08:34:31,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-06 08:34:31,609 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:34:31,609 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:34:31,609 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:34:31,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:34:31,613 INFO L85 PathProgramCache]: Analyzing trace with hash -543833562, now seen corresponding path program 1 times [2025-02-06 08:34:31,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:34:31,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039033714] [2025-02-06 08:34:31,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:34:31,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:34:31,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 08:34:31,689 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 08:34:31,690 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:34:31,690 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:34:31,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:34:31,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:34:31,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039033714] [2025-02-06 08:34:31,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039033714] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:34:31,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:34:31,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 08:34:31,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094204690] [2025-02-06 08:34:31,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:34:31,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 08:34:31,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:34:31,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 08:34:31,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 08:34:31,753 INFO L87 Difference]: Start difference. First operand has 1368 states, 860 states have (on average 1.8372093023255813) internal successors, (1580), 1362 states have internal predecessors, (1580), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:34:31,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:34:31,928 INFO L93 Difference]: Finished difference Result 2734 states and 5670 transitions. [2025-02-06 08:34:31,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 08:34:31,930 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-06 08:34:31,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:34:31,955 INFO L225 Difference]: With dead ends: 2734 [2025-02-06 08:34:31,955 INFO L226 Difference]: Without dead ends: 1364 [2025-02-06 08:34:31,965 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 [2025-02-06 08:34:31,967 INFO L435 NwaCegarLoop]: 2489 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2489 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 08:34:31,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2489 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 08:34:31,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2025-02-06 08:34:32,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1364. [2025-02-06 08:34:32,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 857 states have (on average 1.7736289381563595) internal successors, (1520), 1358 states have internal predecessors, (1520), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2025-02-06 08:34:32,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 2526 transitions. [2025-02-06 08:34:32,247 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 2526 transitions. Word has length 9 [2025-02-06 08:34:32,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:34:32,248 INFO L471 AbstractCegarLoop]: Abstraction has 1364 states and 2526 transitions. [2025-02-06 08:34:32,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:34:32,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 2526 transitions. [2025-02-06 08:34:32,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-02-06 08:34:32,253 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:34:32,253 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:34:32,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 08:34:32,254 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:34:32,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:34:32,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1098302813, now seen corresponding path program 1 times [2025-02-06 08:34:32,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:34:32,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705490794] [2025-02-06 08:34:32,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:34:32,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:34:32,273 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-02-06 08:34:32,284 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-02-06 08:34:32,284 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:34:32,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:34:32,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:34:32,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:34:32,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705490794] [2025-02-06 08:34:32,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705490794] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:34:32,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:34:32,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 08:34:32,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607203352] [2025-02-06 08:34:32,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:34:32,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 08:34:32,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:34:32,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 08:34:32,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 08:34:32,594 INFO L87 Difference]: Start difference. First operand 1364 states and 2526 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:34:33,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:34:33,401 INFO L93 Difference]: Finished difference Result 3880 states and 7279 transitions. [2025-02-06 08:34:33,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 08:34:33,403 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2025-02-06 08:34:33,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:34:33,424 INFO L225 Difference]: With dead ends: 3880 [2025-02-06 08:34:33,424 INFO L226 Difference]: Without dead ends: 2715 [2025-02-06 08:34:33,429 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 [2025-02-06 08:34:33,430 INFO L435 NwaCegarLoop]: 2712 mSDtfsCounter, 1505 mSDsluCounter, 4672 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2008 SdHoareTripleChecker+Valid, 7384 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-06 08:34:33,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2008 Valid, 7384 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-06 08:34:33,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2715 states. [2025-02-06 08:34:33,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2715 to 1366. [2025-02-06 08:34:33,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 859 states have (on average 1.7718277066356227) internal successors, (1522), 1360 states have internal predecessors, (1522), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2025-02-06 08:34:33,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 2528 transitions. [2025-02-06 08:34:33,762 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 2528 transitions. Word has length 63 [2025-02-06 08:34:33,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:34:33,762 INFO L471 AbstractCegarLoop]: Abstraction has 1366 states and 2528 transitions. [2025-02-06 08:34:33,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:34:33,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 2528 transitions. [2025-02-06 08:34:33,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-02-06 08:34:33,766 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:34:33,766 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:34:33,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 08:34:33,766 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:34:33,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:34:33,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1460893648, now seen corresponding path program 1 times [2025-02-06 08:34:33,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:34:33,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344286662] [2025-02-06 08:34:33,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:34:33,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:34:33,819 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-02-06 08:34:33,832 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-02-06 08:34:33,833 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:34:33,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:34:34,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:34:34,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:34:34,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344286662] [2025-02-06 08:34:34,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344286662] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:34:34,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:34:34,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 08:34:34,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104543878] [2025-02-06 08:34:34,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:34:34,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 08:34:34,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:34:34,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 08:34:34,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 08:34:34,129 INFO L87 Difference]: Start difference. First operand 1366 states and 2528 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2025-02-06 08:34:34,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:34:34,281 INFO L93 Difference]: Finished difference Result 2686 states and 4986 transitions. [2025-02-06 08:34:34,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 08:34:34,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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 138 [2025-02-06 08:34:34,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:34:34,292 INFO L225 Difference]: With dead ends: 2686 [2025-02-06 08:34:34,292 INFO L226 Difference]: Without dead ends: 1324 [2025-02-06 08:34:34,296 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 [2025-02-06 08:34:34,298 INFO L435 NwaCegarLoop]: 2393 mSDtfsCounter, 30 mSDsluCounter, 4767 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 7160 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 [2025-02-06 08:34:34,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 7160 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 08:34:34,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2025-02-06 08:34:34,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1324. [2025-02-06 08:34:34,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1324 states, 817 states have (on average 1.7686658506731947) internal successors, (1445), 1318 states have internal predecessors, (1445), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2025-02-06 08:34:34,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 2451 transitions. [2025-02-06 08:34:34,400 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 2451 transitions. Word has length 138 [2025-02-06 08:34:34,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:34:34,400 INFO L471 AbstractCegarLoop]: Abstraction has 1324 states and 2451 transitions. [2025-02-06 08:34:34,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 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) [2025-02-06 08:34:34,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 2451 transitions. [2025-02-06 08:34:34,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-02-06 08:34:34,405 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:34:34,405 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:34:34,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 08:34:34,405 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:34:34,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:34:34,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1017054710, now seen corresponding path program 1 times [2025-02-06 08:34:34,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:34:34,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504239372] [2025-02-06 08:34:34,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:34:34,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:34:34,452 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-02-06 08:34:34,465 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-02-06 08:34:34,465 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:34:34,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:34:34,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:34:34,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:34:34,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504239372] [2025-02-06 08:34:34,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504239372] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:34:34,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:34:34,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 08:34:34,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704910960] [2025-02-06 08:34:34,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:34:34,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 08:34:34,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:34:34,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 08:34:34,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 08:34:34,574 INFO L87 Difference]: Start difference. First operand 1324 states and 2451 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2025-02-06 08:34:34,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:34:34,754 INFO L93 Difference]: Finished difference Result 3867 states and 7220 transitions. [2025-02-06 08:34:34,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 08:34:34,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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 138 [2025-02-06 08:34:34,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:34:34,775 INFO L225 Difference]: With dead ends: 3867 [2025-02-06 08:34:34,775 INFO L226 Difference]: Without dead ends: 2547 [2025-02-06 08:34:34,780 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 08:34:34,780 INFO L435 NwaCegarLoop]: 2846 mSDtfsCounter, 1260 mSDsluCounter, 2397 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1760 SdHoareTripleChecker+Valid, 5243 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 [2025-02-06 08:34:34,781 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1760 Valid, 5243 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 08:34:34,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2025-02-06 08:34:35,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2545. [2025-02-06 08:34:35,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2545 states, 1538 states have (on average 1.7971391417425226) internal successors, (2764), 2539 states have internal predecessors, (2764), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-02-06 08:34:35,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 4770 transitions. [2025-02-06 08:34:35,043 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 4770 transitions. Word has length 138 [2025-02-06 08:34:35,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:34:35,044 INFO L471 AbstractCegarLoop]: Abstraction has 2545 states and 4770 transitions. [2025-02-06 08:34:35,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2025-02-06 08:34:35,044 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 4770 transitions. [2025-02-06 08:34:35,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-02-06 08:34:35,046 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:34:35,046 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] [2025-02-06 08:34:35,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 08:34:35,047 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:34:35,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:34:35,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1328017133, now seen corresponding path program 1 times [2025-02-06 08:34:35,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:34:35,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616443533] [2025-02-06 08:34:35,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:34:35,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:34:35,098 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-02-06 08:34:35,134 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-02-06 08:34:35,134 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:34:35,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:34:35,353 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 08:34:35,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:34:35,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616443533] [2025-02-06 08:34:35,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616443533] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:34:35,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:34:35,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 08:34:35,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128210483] [2025-02-06 08:34:35,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:34:35,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 08:34:35,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:34:35,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 08:34:35,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 08:34:35,356 INFO L87 Difference]: Start difference. First operand 2545 states and 4770 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:34:35,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:34:35,547 INFO L93 Difference]: Finished difference Result 4760 states and 9078 transitions. [2025-02-06 08:34:35,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 08:34:35,548 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 153 [2025-02-06 08:34:35,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:34:35,567 INFO L225 Difference]: With dead ends: 4760 [2025-02-06 08:34:35,568 INFO L226 Difference]: Without dead ends: 2461 [2025-02-06 08:34:35,576 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 [2025-02-06 08:34:35,577 INFO L435 NwaCegarLoop]: 2319 mSDtfsCounter, 30 mSDsluCounter, 4619 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 6938 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 08:34:35,577 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 6938 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 08:34:35,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2461 states. [2025-02-06 08:34:35,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2461 to 2461. [2025-02-06 08:34:35,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2461 states, 1454 states have (on average 1.7950481430536451) internal successors, (2610), 2455 states have internal predecessors, (2610), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2025-02-06 08:34:35,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2461 states to 2461 states and 4616 transitions. [2025-02-06 08:34:35,794 INFO L78 Accepts]: Start accepts. Automaton has 2461 states and 4616 transitions. Word has length 153 [2025-02-06 08:34:35,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:34:35,794 INFO L471 AbstractCegarLoop]: Abstraction has 2461 states and 4616 transitions. [2025-02-06 08:34:35,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:34:35,795 INFO L276 IsEmpty]: Start isEmpty. Operand 2461 states and 4616 transitions. [2025-02-06 08:34:35,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-02-06 08:34:35,796 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:34:35,796 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] [2025-02-06 08:34:35,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 08:34:35,796 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:34:35,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:34:35,797 INFO L85 PathProgramCache]: Analyzing trace with hash -2091127226, now seen corresponding path program 1 times [2025-02-06 08:34:35,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:34:35,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512037248] [2025-02-06 08:34:35,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:34:35,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:34:35,835 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-02-06 08:34:35,863 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-02-06 08:34:35,863 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:34:35,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:34:36,020 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:34:36,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:34:36,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512037248] [2025-02-06 08:34:36,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512037248] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:34:36,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:34:36,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 08:34:36,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811867620] [2025-02-06 08:34:36,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:34:36,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 08:34:36,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:34:36,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 08:34:36,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 08:34:36,023 INFO L87 Difference]: Start difference. First operand 2461 states and 4616 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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) [2025-02-06 08:34:37,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:34:37,853 INFO L93 Difference]: Finished difference Result 4910 states and 9216 transitions. [2025-02-06 08:34:37,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 08:34:37,853 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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 153 [2025-02-06 08:34:37,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:34:37,872 INFO L225 Difference]: With dead ends: 4910 [2025-02-06 08:34:37,873 INFO L226 Difference]: Without dead ends: 2539 [2025-02-06 08:34:37,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-02-06 08:34:37,882 INFO L435 NwaCegarLoop]: 2662 mSDtfsCounter, 6123 mSDsluCounter, 2409 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 1477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6624 SdHoareTripleChecker+Valid, 5071 SdHoareTripleChecker+Invalid, 2126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1477 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-02-06 08:34:37,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6624 Valid, 5071 Invalid, 2126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1477 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-02-06 08:34:37,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2025-02-06 08:34:38,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 1368. [2025-02-06 08:34:38,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1368 states, 861 states have (on average 1.7224157955865274) internal successors, (1483), 1362 states have internal predecessors, (1483), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2025-02-06 08:34:38,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 2489 transitions. [2025-02-06 08:34:38,167 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 2489 transitions. Word has length 153 [2025-02-06 08:34:38,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:34:38,167 INFO L471 AbstractCegarLoop]: Abstraction has 1368 states and 2489 transitions. [2025-02-06 08:34:38,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 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) [2025-02-06 08:34:38,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 2489 transitions. [2025-02-06 08:34:38,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-02-06 08:34:38,169 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:34:38,169 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:34:38,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 08:34:38,169 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:34:38,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:34:38,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1383807528, now seen corresponding path program 1 times [2025-02-06 08:34:38,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:34:38,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385292660] [2025-02-06 08:34:38,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:34:38,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:34:38,210 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-02-06 08:34:38,253 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-02-06 08:34:38,254 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:34:38,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:34:38,883 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:34:38,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:34:38,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385292660] [2025-02-06 08:34:38,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385292660] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:34:38,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523715298] [2025-02-06 08:34:38,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:34:38,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:34:38,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:34:38,886 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 08:34:38,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 08:34:39,065 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-02-06 08:34:39,157 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-02-06 08:34:39,157 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:34:39,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:34:39,162 INFO L256 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 08:34:39,171 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:34:39,192 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 [2025-02-06 08:34:39,385 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 [2025-02-06 08:34:39,390 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 [2025-02-06 08:34:39,396 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:34:39,396 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 08:34:39,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:34:39,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523715298] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 08:34:39,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 08:34:39,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 11 [2025-02-06 08:34:39,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403422419] [2025-02-06 08:34:39,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 08:34:39,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 08:34:39,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:34:39,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 08:34:39,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2025-02-06 08:34:39,566 INFO L87 Difference]: Start difference. First operand 1368 states and 2489 transitions. Second operand has 11 states, 11 states have (on average 29.272727272727273) internal successors, (322), 11 states have internal predecessors, (322), 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) [2025-02-06 08:34:44,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:34:44,324 INFO L93 Difference]: Finished difference Result 5211 states and 9615 transitions. [2025-02-06 08:34:44,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 08:34:44,325 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 29.272727272727273) internal successors, (322), 11 states have internal predecessors, (322), 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 163 [2025-02-06 08:34:44,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:34:44,345 INFO L225 Difference]: With dead ends: 5211 [2025-02-06 08:34:44,345 INFO L226 Difference]: Without dead ends: 4088 [2025-02-06 08:34:44,349 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 319 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2025-02-06 08:34:44,349 INFO L435 NwaCegarLoop]: 1861 mSDtfsCounter, 4252 mSDsluCounter, 13033 mSDsCounter, 0 mSdLazyCounter, 5843 mSolverCounterSat, 1007 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5256 SdHoareTripleChecker+Valid, 14894 SdHoareTripleChecker+Invalid, 6850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1007 IncrementalHoareTripleChecker+Valid, 5843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2025-02-06 08:34:44,350 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5256 Valid, 14894 Invalid, 6850 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1007 Valid, 5843 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2025-02-06 08:34:44,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4088 states. [2025-02-06 08:34:44,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4088 to 1710. [2025-02-06 08:34:44,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1710 states, 1199 states have (on average 1.6138448707256046) internal successors, (1935), 1700 states have internal predecessors, (1935), 506 states have call successors, (506), 3 states have call predecessors, (506), 3 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2025-02-06 08:34:44,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 2947 transitions. [2025-02-06 08:34:44,677 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 2947 transitions. Word has length 163 [2025-02-06 08:34:44,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:34:44,677 INFO L471 AbstractCegarLoop]: Abstraction has 1710 states and 2947 transitions. [2025-02-06 08:34:44,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 29.272727272727273) internal successors, (322), 11 states have internal predecessors, (322), 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) [2025-02-06 08:34:44,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 2947 transitions. [2025-02-06 08:34:44,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2025-02-06 08:34:44,681 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:34:44,681 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, 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, 1, 1] [2025-02-06 08:34:44,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 08:34:44,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:34:44,882 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:34:44,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:34:44,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1745948485, now seen corresponding path program 1 times [2025-02-06 08:34:44,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:34:44,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121952816] [2025-02-06 08:34:44,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:34:44,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:34:44,962 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 388 statements into 1 equivalence classes. [2025-02-06 08:34:45,083 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 388 of 388 statements. [2025-02-06 08:34:45,083 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:34:45,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:34:47,462 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 0 proven. 452 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:34:47,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:34:47,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121952816] [2025-02-06 08:34:47,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121952816] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:34:47,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407048058] [2025-02-06 08:34:47,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:34:47,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:34:47,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:34:47,465 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 08:34:47,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 08:34:47,714 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 388 statements into 1 equivalence classes. [2025-02-06 08:34:47,902 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 388 of 388 statements. [2025-02-06 08:34:47,902 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:34:47,902 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:34:47,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 1898 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 08:34:47,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:34:47,927 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 [2025-02-06 08:34:48,069 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 [2025-02-06 08:34:48,144 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 [2025-02-06 08:34:48,220 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 [2025-02-06 08:34:48,291 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 [2025-02-06 08:34:48,296 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 [2025-02-06 08:34:48,299 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 0 proven. 452 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:34:48,299 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 08:34:48,658 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 0 proven. 452 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:34:48,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407048058] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 08:34:48,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 08:34:48,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 8] total 20 [2025-02-06 08:34:48,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723774270] [2025-02-06 08:34:48,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 08:34:48,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-06 08:34:48,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:34:48,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-06 08:34:48,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=236, Unknown=0, NotChecked=0, Total=380 [2025-02-06 08:34:48,664 INFO L87 Difference]: Start difference. First operand 1710 states and 2947 transitions. Second operand has 20 states, 20 states have (on average 38.9) internal successors, (778), 20 states have internal predecessors, (778), 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) [2025-02-06 08:34:57,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:34:57,074 INFO L93 Difference]: Finished difference Result 10527 states and 19384 transitions. [2025-02-06 08:34:57,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-06 08:34:57,075 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 38.9) internal successors, (778), 20 states have internal predecessors, (778), 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 388 [2025-02-06 08:34:57,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:34:57,117 INFO L225 Difference]: With dead ends: 10527 [2025-02-06 08:34:57,117 INFO L226 Difference]: Without dead ends: 9404 [2025-02-06 08:34:57,122 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 794 GetRequests, 767 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=223, Invalid=427, Unknown=0, NotChecked=0, Total=650 [2025-02-06 08:34:57,123 INFO L435 NwaCegarLoop]: 1861 mSDtfsCounter, 16066 mSDsluCounter, 18635 mSDsCounter, 0 mSdLazyCounter, 11054 mSolverCounterSat, 2110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19076 SdHoareTripleChecker+Valid, 20496 SdHoareTripleChecker+Invalid, 13164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2110 IncrementalHoareTripleChecker+Valid, 11054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2025-02-06 08:34:57,123 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19076 Valid, 20496 Invalid, 13164 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2110 Valid, 11054 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2025-02-06 08:34:57,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9404 states. [2025-02-06 08:34:57,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9404 to 2562. [2025-02-06 08:34:57,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2562 states, 2045 states have (on average 1.5007334963325183) internal successors, (3069), 2546 states have internal predecessors, (3069), 512 states have call successors, (512), 3 states have call predecessors, (512), 3 states have return successors, (512), 13 states have call predecessors, (512), 512 states have call successors, (512) [2025-02-06 08:34:57,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2562 states to 2562 states and 4093 transitions. [2025-02-06 08:34:57,905 INFO L78 Accepts]: Start accepts. Automaton has 2562 states and 4093 transitions. Word has length 388 [2025-02-06 08:34:57,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:34:57,906 INFO L471 AbstractCegarLoop]: Abstraction has 2562 states and 4093 transitions. [2025-02-06 08:34:57,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 38.9) internal successors, (778), 20 states have internal predecessors, (778), 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) [2025-02-06 08:34:57,906 INFO L276 IsEmpty]: Start isEmpty. Operand 2562 states and 4093 transitions. [2025-02-06 08:34:57,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2025-02-06 08:34:57,917 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:34:57,918 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, 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] [2025-02-06 08:34:57,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 08:34:58,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:34:58,119 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:34:58,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:34:58,120 INFO L85 PathProgramCache]: Analyzing trace with hash 988768677, now seen corresponding path program 2 times [2025-02-06 08:34:58,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:34:58,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166959111] [2025-02-06 08:34:58,121 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 08:34:58,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:34:58,359 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 838 statements into 2 equivalence classes. [2025-02-06 08:34:58,385 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 73 of 838 statements. [2025-02-06 08:34:58,386 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 08:34:58,386 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:34:58,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3381 trivial. 0 not checked. [2025-02-06 08:34:58,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:34:58,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166959111] [2025-02-06 08:34:58,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166959111] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:34:58,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:34:58,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 08:34:58,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946028543] [2025-02-06 08:34:58,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:34:58,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 08:34:58,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:34:58,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 08:34:58,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 08:34:58,579 INFO L87 Difference]: Start difference. First operand 2562 states and 4093 transitions. Second operand has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:34:58,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:34:58,931 INFO L93 Difference]: Finished difference Result 3689 states and 6261 transitions. [2025-02-06 08:34:58,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 08:34:58,932 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 838 [2025-02-06 08:34:58,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:34:58,942 INFO L225 Difference]: With dead ends: 3689 [2025-02-06 08:34:58,943 INFO L226 Difference]: Without dead ends: 2567 [2025-02-06 08:34:58,946 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 [2025-02-06 08:34:58,946 INFO L435 NwaCegarLoop]: 2323 mSDtfsCounter, 14 mSDsluCounter, 9028 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 11351 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 08:34:58,947 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 11351 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 08:34:58,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2025-02-06 08:34:59,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2564. [2025-02-06 08:34:59,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2564 states, 2047 states have (on average 1.5002442598925256) internal successors, (3071), 2548 states have internal predecessors, (3071), 512 states have call successors, (512), 3 states have call predecessors, (512), 3 states have return successors, (512), 13 states have call predecessors, (512), 512 states have call successors, (512) [2025-02-06 08:34:59,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2564 states to 2564 states and 4095 transitions. [2025-02-06 08:34:59,147 INFO L78 Accepts]: Start accepts. Automaton has 2564 states and 4095 transitions. Word has length 838 [2025-02-06 08:34:59,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:34:59,148 INFO L471 AbstractCegarLoop]: Abstraction has 2564 states and 4095 transitions. [2025-02-06 08:34:59,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:34:59,148 INFO L276 IsEmpty]: Start isEmpty. Operand 2564 states and 4095 transitions. [2025-02-06 08:34:59,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 840 [2025-02-06 08:34:59,161 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:34:59,161 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, 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, 1] [2025-02-06 08:34:59,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 08:34:59,161 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:34:59,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:34:59,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1747229338, now seen corresponding path program 1 times [2025-02-06 08:34:59,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:34:59,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64135341] [2025-02-06 08:34:59,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:34:59,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:34:59,326 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 839 statements into 1 equivalence classes. [2025-02-06 08:34:59,573 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 839 of 839 statements. [2025-02-06 08:34:59,573 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:34:59,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:35:07,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3381 backedges. 0 proven. 3377 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:35:07,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:35:07,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64135341] [2025-02-06 08:35:07,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64135341] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:35:07,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879953767] [2025-02-06 08:35:07,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:35:07,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:35:07,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:35:07,882 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 08:35:07,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 08:35:08,391 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 839 statements into 1 equivalence classes. [2025-02-06 08:35:08,828 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 839 of 839 statements. [2025-02-06 08:35:08,828 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:35:08,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:35:08,847 INFO L256 TraceCheckSpWp]: Trace formula consists of 4161 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-02-06 08:35:08,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:35:08,863 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 [2025-02-06 08:35:08,994 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 [2025-02-06 08:35:09,054 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 [2025-02-06 08:35:09,120 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 [2025-02-06 08:35:09,181 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 [2025-02-06 08:35:09,241 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 [2025-02-06 08:35:09,301 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 [2025-02-06 08:35:09,368 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 [2025-02-06 08:35:09,439 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 [2025-02-06 08:35:09,509 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 [2025-02-06 08:35:09,577 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 [2025-02-06 08:35:09,580 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 [2025-02-06 08:35:09,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3381 backedges. 0 proven. 3377 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:35:09,585 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 08:35:10,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3381 backedges. 0 proven. 3377 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:35:10,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879953767] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 08:35:10,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 08:35:10,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 15, 14] total 38 [2025-02-06 08:35:10,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442957244] [2025-02-06 08:35:10,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 08:35:10,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-02-06 08:35:10,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:35:10,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-02-06 08:35:10,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=570, Invalid=836, Unknown=0, NotChecked=0, Total=1406 [2025-02-06 08:35:10,422 INFO L87 Difference]: Start difference. First operand 2564 states and 4095 transitions. Second operand has 38 states, 38 states have (on average 44.5) internal successors, (1691), 38 states have internal predecessors, (1691), 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) [2025-02-06 08:35:41,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:35:41,694 INFO L93 Difference]: Finished difference Result 18955 states and 34640 transitions. [2025-02-06 08:35:41,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2025-02-06 08:35:41,695 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 44.5) internal successors, (1691), 38 states have internal predecessors, (1691), 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 839 [2025-02-06 08:35:41,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:35:41,754 INFO L225 Difference]: With dead ends: 18955 [2025-02-06 08:35:41,754 INFO L226 Difference]: Without dead ends: 17830 [2025-02-06 08:35:41,762 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1717 GetRequests, 1666 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=871, Invalid=1579, Unknown=0, NotChecked=0, Total=2450 [2025-02-06 08:35:41,762 INFO L435 NwaCegarLoop]: 1861 mSDtfsCounter, 43291 mSDsluCounter, 32935 mSDsCounter, 0 mSdLazyCounter, 18969 mSolverCounterSat, 6443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49313 SdHoareTripleChecker+Valid, 34796 SdHoareTripleChecker+Invalid, 25412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6443 IncrementalHoareTripleChecker+Valid, 18969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.7s IncrementalHoareTripleChecker+Time [2025-02-06 08:35:41,763 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49313 Valid, 34796 Invalid, 25412 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6443 Valid, 18969 Invalid, 0 Unknown, 0 Unchecked, 27.7s Time] [2025-02-06 08:35:41,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17830 states. [2025-02-06 08:35:43,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17830 to 4268. [2025-02-06 08:35:43,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4268 states, 3739 states have (on average 1.427921904252474) internal successors, (5339), 4240 states have internal predecessors, (5339), 524 states have call successors, (524), 3 states have call predecessors, (524), 3 states have return successors, (524), 25 states have call predecessors, (524), 524 states have call successors, (524) [2025-02-06 08:35:43,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4268 states to 4268 states and 6387 transitions. [2025-02-06 08:35:43,590 INFO L78 Accepts]: Start accepts. Automaton has 4268 states and 6387 transitions. Word has length 839 [2025-02-06 08:35:43,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:35:43,592 INFO L471 AbstractCegarLoop]: Abstraction has 4268 states and 6387 transitions. [2025-02-06 08:35:43,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 44.5) internal successors, (1691), 38 states have internal predecessors, (1691), 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) [2025-02-06 08:35:43,593 INFO L276 IsEmpty]: Start isEmpty. Operand 4268 states and 6387 transitions. [2025-02-06 08:35:43,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1740 [2025-02-06 08:35:43,609 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:35:43,610 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 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] [2025-02-06 08:35:43,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 08:35:43,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:35:43,811 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:35:43,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:35:43,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1531744422, now seen corresponding path program 2 times [2025-02-06 08:35:43,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:35:43,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525140857] [2025-02-06 08:35:43,813 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 08:35:43,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:35:44,145 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 1739 statements into 2 equivalence classes. [2025-02-06 08:35:44,155 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 74 of 1739 statements. [2025-02-06 08:35:44,155 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 08:35:44,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:35:44,265 INFO L134 CoverageAnalysis]: Checked inductivity of 17331 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17331 trivial. 0 not checked. [2025-02-06 08:35:44,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:35:44,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525140857] [2025-02-06 08:35:44,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525140857] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:35:44,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:35:44,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 08:35:44,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660358215] [2025-02-06 08:35:44,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:35:44,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 08:35:44,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:35:44,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 08:35:44,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 08:35:44,267 INFO L87 Difference]: Start difference. First operand 4268 states and 6387 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:35:44,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:35:44,490 INFO L93 Difference]: Finished difference Result 5392 states and 8549 transitions. [2025-02-06 08:35:44,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 08:35:44,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 1739 [2025-02-06 08:35:44,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:35:44,504 INFO L225 Difference]: With dead ends: 5392 [2025-02-06 08:35:44,504 INFO L226 Difference]: Without dead ends: 4268 [2025-02-06 08:35:44,508 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 08:35:44,509 INFO L435 NwaCegarLoop]: 2327 mSDtfsCounter, 17 mSDsluCounter, 4539 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 6866 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 08:35:44,509 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 6866 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 08:35:44,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4268 states. [2025-02-06 08:35:44,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4268 to 4268. [2025-02-06 08:35:44,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4268 states, 3739 states have (on average 1.427654453062316) internal successors, (5338), 4240 states have internal predecessors, (5338), 524 states have call successors, (524), 3 states have call predecessors, (524), 3 states have return successors, (524), 25 states have call predecessors, (524), 524 states have call successors, (524) [2025-02-06 08:35:44,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4268 states to 4268 states and 6386 transitions. [2025-02-06 08:35:44,773 INFO L78 Accepts]: Start accepts. Automaton has 4268 states and 6386 transitions. Word has length 1739 [2025-02-06 08:35:44,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:35:44,775 INFO L471 AbstractCegarLoop]: Abstraction has 4268 states and 6386 transitions. [2025-02-06 08:35:44,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:35:44,775 INFO L276 IsEmpty]: Start isEmpty. Operand 4268 states and 6386 transitions. [2025-02-06 08:35:44,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1740 [2025-02-06 08:35:44,791 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:35:44,791 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 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] [2025-02-06 08:35:44,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 08:35:44,791 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:35:44,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:35:44,792 INFO L85 PathProgramCache]: Analyzing trace with hash 432947949, now seen corresponding path program 1 times [2025-02-06 08:35:44,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:35:44,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205236448] [2025-02-06 08:35:44,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:35:44,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:35:45,129 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1739 statements into 1 equivalence classes. [2025-02-06 08:35:45,691 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1739 of 1739 statements. [2025-02-06 08:35:45,692 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:35:45,692 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:35:48,105 INFO L134 CoverageAnalysis]: Checked inductivity of 17331 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17331 trivial. 0 not checked. [2025-02-06 08:35:48,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:35:48,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205236448] [2025-02-06 08:35:48,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205236448] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:35:48,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:35:48,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 08:35:48,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278813104] [2025-02-06 08:35:48,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:35:48,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 08:35:48,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:35:48,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 08:35:48,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-06 08:35:48,107 INFO L87 Difference]: Start difference. First operand 4268 states and 6386 transitions. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:35:48,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:35:48,564 INFO L93 Difference]: Finished difference Result 5397 states and 8555 transitions. [2025-02-06 08:35:48,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 08:35:48,565 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 1739 [2025-02-06 08:35:48,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:35:48,579 INFO L225 Difference]: With dead ends: 5397 [2025-02-06 08:35:48,579 INFO L226 Difference]: Without dead ends: 4273 [2025-02-06 08:35:48,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-06 08:35:48,584 INFO L435 NwaCegarLoop]: 2318 mSDtfsCounter, 14 mSDsluCounter, 11304 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 13622 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 08:35:48,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 13622 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 08:35:48,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4273 states. [2025-02-06 08:35:48,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4273 to 4272. [2025-02-06 08:35:48,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4272 states, 3743 states have (on average 1.4274646005877638) internal successors, (5343), 4244 states have internal predecessors, (5343), 524 states have call successors, (524), 3 states have call predecessors, (524), 3 states have return successors, (524), 25 states have call predecessors, (524), 524 states have call successors, (524) [2025-02-06 08:35:48,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4272 states to 4272 states and 6391 transitions. [2025-02-06 08:35:48,805 INFO L78 Accepts]: Start accepts. Automaton has 4272 states and 6391 transitions. Word has length 1739 [2025-02-06 08:35:48,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:35:48,806 INFO L471 AbstractCegarLoop]: Abstraction has 4272 states and 6391 transitions. [2025-02-06 08:35:48,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:35:48,806 INFO L276 IsEmpty]: Start isEmpty. Operand 4272 states and 6391 transitions. [2025-02-06 08:35:48,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1741 [2025-02-06 08:35:48,822 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:35:48,822 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 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] [2025-02-06 08:35:48,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 08:35:48,823 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:35:48,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:35:48,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1645726712, now seen corresponding path program 1 times [2025-02-06 08:35:48,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:35:48,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147156326] [2025-02-06 08:35:48,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:35:48,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:35:49,177 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1740 statements into 1 equivalence classes.