./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test3-2.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_JEN_nondet_test3-2.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 be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 08:39:16,750 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 08:39:16,812 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 08:39:16,817 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 08:39:16,817 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 08:39:16,830 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 08:39:16,831 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 08:39:16,831 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 08:39:16,831 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 08:39:16,831 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 08:39:16,831 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 08:39:16,831 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 08:39:16,832 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 08:39:16,832 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 08:39:16,832 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 08:39:16,832 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 08:39:16,832 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 08:39:16,832 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 08:39:16,832 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 08:39:16,832 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 08:39:16,832 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 08:39:16,832 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 08:39:16,833 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 08:39:16,833 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 08:39:16,833 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 08:39:16,833 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 08:39:16,833 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 08:39:16,833 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 08:39:16,833 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 08:39:16,833 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 08:39:16,833 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 08:39:16,833 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 08:39:16,833 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 08:39:16,833 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 08:39:16,834 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 08:39:16,834 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 08:39:16,834 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 08:39:16,834 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 08:39:16,834 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 08:39:16,834 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 08:39:16,834 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 08:39:16,834 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 08:39:16,834 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 08:39:16,834 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 -> be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 [2025-02-06 08:39:17,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 08:39:17,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 08:39:17,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 08:39:17,064 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 08:39:17,064 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 08:39:17,065 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test3-2.i [2025-02-06 08:39:18,225 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2c11d021a/85f3fbde56944e2aae9b9bb2b9f65dbc/FLAG195af378b [2025-02-06 08:39:18,536 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 08:39:18,541 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test3-2.i [2025-02-06 08:39:18,556 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2c11d021a/85f3fbde56944e2aae9b9bb2b9f65dbc/FLAG195af378b [2025-02-06 08:39:18,800 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2c11d021a/85f3fbde56944e2aae9b9bb2b9f65dbc [2025-02-06 08:39:18,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 08:39:18,806 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 08:39:18,806 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 08:39:18,810 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 08:39:18,813 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 08:39:18,814 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 08:39:18" (1/1) ... [2025-02-06 08:39:18,814 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69e148bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:39:18, skipping insertion in model container [2025-02-06 08:39:18,816 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 08:39:18" (1/1) ... [2025-02-06 08:39:18,847 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 08:39:19,124 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_JEN_nondet_test3-2.i[33519,33532] [2025-02-06 08:39:19,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 08:39:19,244 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 08:39:19,278 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_JEN_nondet_test3-2.i[33519,33532] [2025-02-06 08:39:19,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 08:39:19,361 INFO L204 MainTranslator]: Completed translation [2025-02-06 08:39:19,362 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:39:19 WrapperNode [2025-02-06 08:39:19,362 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 08:39:19,363 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 08:39:19,363 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 08:39:19,363 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 08:39:19,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:39:19" (1/1) ... [2025-02-06 08:39:19,383 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:39:19" (1/1) ... [2025-02-06 08:39:19,429 INFO L138 Inliner]: procedures = 177, calls = 324, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1545 [2025-02-06 08:39:19,429 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 08:39:19,430 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 08:39:19,430 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 08:39:19,430 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 08:39:19,436 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:39:19" (1/1) ... [2025-02-06 08:39:19,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:39:19" (1/1) ... [2025-02-06 08:39:19,444 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:39:19" (1/1) ... [2025-02-06 08:39:19,531 INFO L175 MemorySlicer]: Split 302 memory accesses to 3 slices as follows [34, 2, 266]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2, 0]. The 62 writes are split as follows [4, 0, 58]. [2025-02-06 08:39:19,531 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:39:19" (1/1) ... [2025-02-06 08:39:19,531 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:39:19" (1/1) ... [2025-02-06 08:39:19,558 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:39:19" (1/1) ... [2025-02-06 08:39:19,561 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:39:19" (1/1) ... [2025-02-06 08:39:19,564 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:39:19" (1/1) ... [2025-02-06 08:39:19,567 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:39:19" (1/1) ... [2025-02-06 08:39:19,572 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 08:39:19,573 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 08:39:19,573 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 08:39:19,573 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 08:39:19,573 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:39:19" (1/1) ... [2025-02-06 08:39:19,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 08:39:19,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:39:19,604 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 08:39:19,606 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 08:39:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 08:39:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 08:39:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 08:39:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-06 08:39:19,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-06 08:39:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 08:39:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 08:39:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 08:39:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-06 08:39:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-06 08:39:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-02-06 08:39:19,622 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-06 08:39:19,622 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-06 08:39:19,622 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-02-06 08:39:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 08:39:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 08:39:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 08:39:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 08:39:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-06 08:39:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 08:39:19,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 08:39:19,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 08:39:19,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-06 08:39:19,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 08:39:19,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 08:39:19,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 08:39:19,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 08:39:19,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 08:39:19,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 08:39:19,828 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 08:39:19,830 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 08:39:20,798 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L734: 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 08:39:20,867 INFO L? ?]: Removed 335 outVars from TransFormulas that were not future-live. [2025-02-06 08:39:20,868 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 08:39:20,914 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 08:39:20,915 INFO L337 CfgBuilder]: Removed 1 assume(true) statements. [2025-02-06 08:39:20,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 08:39:20 BoogieIcfgContainer [2025-02-06 08:39:20,915 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 08:39:20,916 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 08:39:20,916 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 08:39:20,919 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 08:39:20,919 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 08:39:18" (1/3) ... [2025-02-06 08:39:20,920 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611d5e29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 08:39:20, skipping insertion in model container [2025-02-06 08:39:20,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:39:19" (2/3) ... [2025-02-06 08:39:20,920 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611d5e29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 08:39:20, skipping insertion in model container [2025-02-06 08:39:20,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 08:39:20" (3/3) ... [2025-02-06 08:39:20,921 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_JEN_nondet_test3-2.i [2025-02-06 08:39:20,930 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 08:39:20,931 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_JEN_nondet_test3-2.i that has 5 procedures, 438 locations, 1 initial locations, 43 loop locations, and 1 error locations. [2025-02-06 08:39:20,968 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 08:39:20,975 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;@609c567a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 08:39:20,975 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-06 08:39:20,978 INFO L276 IsEmpty]: Start isEmpty. Operand has 430 states, 421 states have (on average 1.6175771971496438) internal successors, (681), 423 states have internal predecessors, (681), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-06 08:39:20,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-06 08:39:20,982 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:39:20,982 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:39:20,982 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:39:20,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:39:20,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1408781482, now seen corresponding path program 1 times [2025-02-06 08:39:20,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:39:20,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478476403] [2025-02-06 08:39:20,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:39:20,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:39:21,041 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 08:39:21,048 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 08:39:21,048 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:39:21,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:39:21,077 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 08:39:21,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:39:21,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478476403] [2025-02-06 08:39:21,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478476403] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:39:21,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:39:21,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 08:39:21,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390632989] [2025-02-06 08:39:21,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:39:21,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 08:39:21,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:39:21,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 08:39:21,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 08:39:21,097 INFO L87 Difference]: Start difference. First operand has 430 states, 421 states have (on average 1.6175771971496438) internal successors, (681), 423 states have internal predecessors, (681), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:39:21,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:39:21,181 INFO L93 Difference]: Finished difference Result 857 states and 1380 transitions. [2025-02-06 08:39:21,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 08:39:21,182 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-02-06 08:39:21,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:39:21,188 INFO L225 Difference]: With dead ends: 857 [2025-02-06 08:39:21,188 INFO L226 Difference]: Without dead ends: 394 [2025-02-06 08:39:21,191 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 08:39:21,192 INFO L435 NwaCegarLoop]: 577 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 08:39:21,193 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 577 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 08:39:21,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2025-02-06 08:39:21,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 394. [2025-02-06 08:39:21,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 386 states have (on average 1.450777202072539) internal successors, (560), 387 states have internal predecessors, (560), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-06 08:39:21,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 570 transitions. [2025-02-06 08:39:21,228 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 570 transitions. Word has length 12 [2025-02-06 08:39:21,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:39:21,229 INFO L471 AbstractCegarLoop]: Abstraction has 394 states and 570 transitions. [2025-02-06 08:39:21,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:39:21,229 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 570 transitions. [2025-02-06 08:39:21,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-06 08:39:21,229 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:39:21,230 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:39:21,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 08:39:21,230 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:39:21,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:39:21,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1218761800, now seen corresponding path program 1 times [2025-02-06 08:39:21,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:39:21,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577120176] [2025-02-06 08:39:21,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:39:21,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:39:21,241 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 08:39:21,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 08:39:21,252 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:39:21,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:39:21,339 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 08:39:21,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:39:21,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577120176] [2025-02-06 08:39:21,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577120176] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:39:21,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:39:21,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 08:39:21,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197751231] [2025-02-06 08:39:21,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:39:21,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 08:39:21,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:39:21,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 08:39:21,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 08:39:21,345 INFO L87 Difference]: Start difference. First operand 394 states and 570 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:39:21,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:39:21,762 INFO L93 Difference]: Finished difference Result 1079 states and 1579 transitions. [2025-02-06 08:39:21,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 08:39:21,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-02-06 08:39:21,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:39:21,767 INFO L225 Difference]: With dead ends: 1079 [2025-02-06 08:39:21,767 INFO L226 Difference]: Without dead ends: 686 [2025-02-06 08:39:21,768 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 08:39:21,768 INFO L435 NwaCegarLoop]: 517 mSDtfsCounter, 429 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 08:39:21,770 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 1504 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 08:39:21,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2025-02-06 08:39:21,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 685. [2025-02-06 08:39:21,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 676 states have (on average 1.470414201183432) internal successors, (994), 678 states have internal predecessors, (994), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 08:39:21,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1006 transitions. [2025-02-06 08:39:21,793 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1006 transitions. Word has length 14 [2025-02-06 08:39:21,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:39:21,793 INFO L471 AbstractCegarLoop]: Abstraction has 685 states and 1006 transitions. [2025-02-06 08:39:21,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:39:21,794 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1006 transitions. [2025-02-06 08:39:21,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-02-06 08:39:21,795 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:39:21,795 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:39:21,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 08:39:21,796 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:39:21,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:39:21,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1265286902, now seen corresponding path program 1 times [2025-02-06 08:39:21,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:39:21,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544818407] [2025-02-06 08:39:21,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:39:21,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:39:21,812 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-06 08:39:21,820 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-06 08:39:21,820 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:39:21,820 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:39:21,983 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 08:39:21,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:39:21,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544818407] [2025-02-06 08:39:21,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544818407] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:39:21,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:39:21,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 08:39:21,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846489863] [2025-02-06 08:39:21,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:39:21,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 08:39:21,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:39:21,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 08:39:21,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 08:39:21,984 INFO L87 Difference]: Start difference. First operand 685 states and 1006 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:39:22,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:39:22,106 INFO L93 Difference]: Finished difference Result 954 states and 1393 transitions. [2025-02-06 08:39:22,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 08:39:22,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2025-02-06 08:39:22,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:39:22,108 INFO L225 Difference]: With dead ends: 954 [2025-02-06 08:39:22,109 INFO L226 Difference]: Without dead ends: 601 [2025-02-06 08:39:22,109 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 08:39:22,110 INFO L435 NwaCegarLoop]: 434 mSDtfsCounter, 33 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 08:39:22,110 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 1286 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 08:39:22,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2025-02-06 08:39:22,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2025-02-06 08:39:22,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 592 states have (on average 1.4189189189189189) internal successors, (840), 594 states have internal predecessors, (840), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 08:39:22,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 852 transitions. [2025-02-06 08:39:22,148 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 852 transitions. Word has length 67 [2025-02-06 08:39:22,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:39:22,148 INFO L471 AbstractCegarLoop]: Abstraction has 601 states and 852 transitions. [2025-02-06 08:39:22,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:39:22,149 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 852 transitions. [2025-02-06 08:39:22,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-02-06 08:39:22,156 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:39:22,156 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:39:22,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 08:39:22,156 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:39:22,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:39:22,157 INFO L85 PathProgramCache]: Analyzing trace with hash 504752723, now seen corresponding path program 1 times [2025-02-06 08:39:22,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:39:22,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659136942] [2025-02-06 08:39:22,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:39:22,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:39:22,174 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-06 08:39:22,180 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-06 08:39:22,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:39:22,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:39:22,259 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 08:39:22,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:39:22,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659136942] [2025-02-06 08:39:22,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659136942] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:39:22,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:39:22,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 08:39:22,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348699014] [2025-02-06 08:39:22,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:39:22,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 08:39:22,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:39:22,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 08:39:22,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 08:39:22,260 INFO L87 Difference]: Start difference. First operand 601 states and 852 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:39:22,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:39:22,355 INFO L93 Difference]: Finished difference Result 870 states and 1217 transitions. [2025-02-06 08:39:22,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 08:39:22,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2025-02-06 08:39:22,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:39:22,358 INFO L225 Difference]: With dead ends: 870 [2025-02-06 08:39:22,358 INFO L226 Difference]: Without dead ends: 601 [2025-02-06 08:39:22,359 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 08:39:22,359 INFO L435 NwaCegarLoop]: 448 mSDtfsCounter, 2 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 08:39:22,360 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 874 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 08:39:22,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2025-02-06 08:39:22,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2025-02-06 08:39:22,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 592 states have (on average 1.4087837837837838) internal successors, (834), 594 states have internal predecessors, (834), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 08:39:22,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 846 transitions. [2025-02-06 08:39:22,376 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 846 transitions. Word has length 67 [2025-02-06 08:39:22,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:39:22,376 INFO L471 AbstractCegarLoop]: Abstraction has 601 states and 846 transitions. [2025-02-06 08:39:22,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:39:22,376 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 846 transitions. [2025-02-06 08:39:22,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-02-06 08:39:22,382 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:39:22,382 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:39:22,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 08:39:22,382 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:39:22,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:39:22,383 INFO L85 PathProgramCache]: Analyzing trace with hash -627810352, now seen corresponding path program 1 times [2025-02-06 08:39:22,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:39:22,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728203305] [2025-02-06 08:39:22,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:39:22,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:39:22,409 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-02-06 08:39:22,446 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-02-06 08:39:22,446 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:39:22,446 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:39:22,738 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 08:39:22,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:39:22,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728203305] [2025-02-06 08:39:22,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728203305] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:39:22,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:39:22,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 08:39:22,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757008468] [2025-02-06 08:39:22,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:39:22,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 08:39:22,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:39:22,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 08:39:22,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-06 08:39:22,740 INFO L87 Difference]: Start difference. First operand 601 states and 846 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:39:22,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:39:22,961 INFO L93 Difference]: Finished difference Result 1110 states and 1528 transitions. [2025-02-06 08:39:22,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 08:39:22,962 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2025-02-06 08:39:22,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:39:22,965 INFO L225 Difference]: With dead ends: 1110 [2025-02-06 08:39:22,965 INFO L226 Difference]: Without dead ends: 838 [2025-02-06 08:39:22,966 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-02-06 08:39:22,966 INFO L435 NwaCegarLoop]: 441 mSDtfsCounter, 459 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 2182 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 08:39:22,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 2182 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 08:39:22,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2025-02-06 08:39:22,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 600. [2025-02-06 08:39:22,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 591 states have (on average 1.4077834179357023) internal successors, (832), 593 states have internal predecessors, (832), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 08:39:22,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 844 transitions. [2025-02-06 08:39:22,981 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 844 transitions. Word has length 67 [2025-02-06 08:39:22,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:39:22,981 INFO L471 AbstractCegarLoop]: Abstraction has 600 states and 844 transitions. [2025-02-06 08:39:22,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:39:22,981 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 844 transitions. [2025-02-06 08:39:22,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-02-06 08:39:22,983 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:39:22,983 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] [2025-02-06 08:39:22,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 08:39:22,983 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:39:22,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:39:22,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1208117777, now seen corresponding path program 1 times [2025-02-06 08:39:22,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:39:22,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266135272] [2025-02-06 08:39:22,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:39:22,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:39:23,032 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-02-06 08:39:23,074 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-02-06 08:39:23,074 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:39:23,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:39:23,227 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 08:39:23,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:39:23,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266135272] [2025-02-06 08:39:23,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266135272] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:39:23,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:39:23,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 08:39:23,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459205739] [2025-02-06 08:39:23,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:39:23,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 08:39:23,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:39:23,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 08:39:23,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 08:39:23,229 INFO L87 Difference]: Start difference. First operand 600 states and 844 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:39:23,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:39:23,338 INFO L93 Difference]: Finished difference Result 1146 states and 1605 transitions. [2025-02-06 08:39:23,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 08:39:23,339 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 104 [2025-02-06 08:39:23,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:39:23,341 INFO L225 Difference]: With dead ends: 1146 [2025-02-06 08:39:23,341 INFO L226 Difference]: Without dead ends: 606 [2025-02-06 08:39:23,341 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 08:39:23,342 INFO L435 NwaCegarLoop]: 427 mSDtfsCounter, 105 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 08:39:23,342 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1197 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 08:39:23,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2025-02-06 08:39:23,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 600. [2025-02-06 08:39:23,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 591 states have (on average 1.3840947546531304) internal successors, (818), 593 states have internal predecessors, (818), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 08:39:23,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 830 transitions. [2025-02-06 08:39:23,354 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 830 transitions. Word has length 104 [2025-02-06 08:39:23,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:39:23,354 INFO L471 AbstractCegarLoop]: Abstraction has 600 states and 830 transitions. [2025-02-06 08:39:23,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:39:23,354 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 830 transitions. [2025-02-06 08:39:23,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-02-06 08:39:23,355 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:39:23,355 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] [2025-02-06 08:39:23,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 08:39:23,355 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:39:23,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:39:23,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1958165800, now seen corresponding path program 1 times [2025-02-06 08:39:23,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:39:23,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192612982] [2025-02-06 08:39:23,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:39:23,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:39:23,394 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-02-06 08:39:23,608 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-02-06 08:39:23,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:39:23,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:39:23,809 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 08:39:23,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:39:23,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192612982] [2025-02-06 08:39:23,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192612982] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:39:23,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634358989] [2025-02-06 08:39:23,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:39:23,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:39:23,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:39:23,819 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 08:39:23,820 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 08:39:24,037 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-02-06 08:39:24,126 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-02-06 08:39:24,126 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:39:24,126 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:39:24,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-06 08:39:24,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:39:24,155 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 08:39:24,173 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 22 treesize of output 7 [2025-02-06 08:39:24,709 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 08:39:24,710 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 08:39:24,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634358989] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:39:24,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 08:39:24,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4] total 13 [2025-02-06 08:39:24,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831095622] [2025-02-06 08:39:24,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:39:24,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 08:39:24,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:39:24,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 08:39:24,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2025-02-06 08:39:24,711 INFO L87 Difference]: Start difference. First operand 600 states and 830 transitions. Second operand has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:39:26,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:39:26,005 INFO L93 Difference]: Finished difference Result 1400 states and 1922 transitions. [2025-02-06 08:39:26,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 08:39:26,006 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 104 [2025-02-06 08:39:26,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:39:26,009 INFO L225 Difference]: With dead ends: 1400 [2025-02-06 08:39:26,009 INFO L226 Difference]: Without dead ends: 886 [2025-02-06 08:39:26,009 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2025-02-06 08:39:26,010 INFO L435 NwaCegarLoop]: 476 mSDtfsCounter, 726 mSDsluCounter, 2129 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-06 08:39:26,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 2605 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-06 08:39:26,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2025-02-06 08:39:26,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 625. [2025-02-06 08:39:26,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 616 states have (on average 1.3766233766233766) internal successors, (848), 618 states have internal predecessors, (848), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 08:39:26,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 860 transitions. [2025-02-06 08:39:26,025 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 860 transitions. Word has length 104 [2025-02-06 08:39:26,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:39:26,026 INFO L471 AbstractCegarLoop]: Abstraction has 625 states and 860 transitions. [2025-02-06 08:39:26,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.727272727272727) internal successors, (96), 11 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:39:26,026 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 860 transitions. [2025-02-06 08:39:26,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-02-06 08:39:26,026 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:39:26,027 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] [2025-02-06 08:39:26,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 08:39:26,231 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 08:39:26,231 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:39:26,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:39:26,232 INFO L85 PathProgramCache]: Analyzing trace with hash -18333018, now seen corresponding path program 1 times [2025-02-06 08:39:26,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:39:26,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179656074] [2025-02-06 08:39:26,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:39:26,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:39:26,263 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-02-06 08:39:26,391 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-02-06 08:39:26,395 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:39:26,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:39:26,627 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 08:39:26,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:39:26,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179656074] [2025-02-06 08:39:26,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179656074] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:39:26,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576125623] [2025-02-06 08:39:26,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:39:26,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:39:26,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:39:26,630 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 08:39:26,632 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 08:39:26,780 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-02-06 08:39:26,862 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-02-06 08:39:26,862 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:39:26,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:39:26,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 08:39:26,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:39:27,064 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 08:39:27,084 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 08:39:27,085 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 08:39:27,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576125623] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:39:27,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 08:39:27,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2025-02-06 08:39:27,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618776749] [2025-02-06 08:39:27,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:39:27,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 08:39:27,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:39:27,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 08:39:27,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-06 08:39:27,086 INFO L87 Difference]: Start difference. First operand 625 states and 860 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:39:27,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:39:27,221 INFO L93 Difference]: Finished difference Result 808 states and 1105 transitions. [2025-02-06 08:39:27,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 08:39:27,221 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 105 [2025-02-06 08:39:27,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:39:27,224 INFO L225 Difference]: With dead ends: 808 [2025-02-06 08:39:27,227 INFO L226 Difference]: Without dead ends: 798 [2025-02-06 08:39:27,228 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-06 08:39:27,228 INFO L435 NwaCegarLoop]: 438 mSDtfsCounter, 739 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 08:39:27,232 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 1276 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 08:39:27,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2025-02-06 08:39:27,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 627. [2025-02-06 08:39:27,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 618 states have (on average 1.3754045307443366) internal successors, (850), 620 states have internal predecessors, (850), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2025-02-06 08:39:27,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 862 transitions. [2025-02-06 08:39:27,264 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 862 transitions. Word has length 105 [2025-02-06 08:39:27,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:39:27,264 INFO L471 AbstractCegarLoop]: Abstraction has 627 states and 862 transitions. [2025-02-06 08:39:27,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:39:27,265 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 862 transitions. [2025-02-06 08:39:27,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2025-02-06 08:39:27,267 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:39:27,268 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] [2025-02-06 08:39:27,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 08:39:27,468 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 08:39:27,468 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:39:27,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:39:27,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1857171506, now seen corresponding path program 1 times [2025-02-06 08:39:27,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:39:27,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482335816] [2025-02-06 08:39:27,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:39:27,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:39:27,532 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 158 statements into 1 equivalence classes. [2025-02-06 08:39:27,552 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 158 of 158 statements. [2025-02-06 08:39:27,552 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:39:27,552 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:39:27,703 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 08:39:27,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:39:27,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482335816] [2025-02-06 08:39:27,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482335816] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:39:27,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:39:27,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 08:39:27,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635828751] [2025-02-06 08:39:27,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:39:27,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 08:39:27,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:39:27,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 08:39:27,705 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 08:39:27,706 INFO L87 Difference]: Start difference. First operand 627 states and 862 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:39:28,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:39:28,104 INFO L93 Difference]: Finished difference Result 1243 states and 1701 transitions. [2025-02-06 08:39:28,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 08:39:28,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 158 [2025-02-06 08:39:28,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:39:28,108 INFO L225 Difference]: With dead ends: 1243 [2025-02-06 08:39:28,108 INFO L226 Difference]: Without dead ends: 774 [2025-02-06 08:39:28,109 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 08:39:28,111 INFO L435 NwaCegarLoop]: 568 mSDtfsCounter, 951 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 08:39:28,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [953 Valid, 937 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 08:39:28,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2025-02-06 08:39:28,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 766. [2025-02-06 08:39:28,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 756 states have (on average 1.369047619047619) internal successors, (1035), 759 states have internal predecessors, (1035), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-06 08:39:28,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1049 transitions. [2025-02-06 08:39:28,140 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1049 transitions. Word has length 158 [2025-02-06 08:39:28,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:39:28,141 INFO L471 AbstractCegarLoop]: Abstraction has 766 states and 1049 transitions. [2025-02-06 08:39:28,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:39:28,141 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1049 transitions. [2025-02-06 08:39:28,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2025-02-06 08:39:28,142 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:39:28,143 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:39:28,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 08:39:28,143 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:39:28,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:39:28,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1666996352, now seen corresponding path program 1 times [2025-02-06 08:39:28,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:39:28,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266765735] [2025-02-06 08:39:28,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:39:28,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:39:28,186 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-02-06 08:39:28,299 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-02-06 08:39:28,300 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:39:28,300 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:39:28,454 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 08:39:28,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:39:28,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266765735] [2025-02-06 08:39:28,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266765735] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:39:28,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942027691] [2025-02-06 08:39:28,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:39:28,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:39:28,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:39:28,458 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 08:39:28,460 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 08:39:28,642 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 168 statements into 1 equivalence classes. [2025-02-06 08:39:28,736 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 168 of 168 statements. [2025-02-06 08:39:28,736 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:39:28,736 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:39:28,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 08:39:28,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:39:28,808 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 08:39:28,810 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 08:39:28,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942027691] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:39:28,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 08:39:28,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-02-06 08:39:28,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685213095] [2025-02-06 08:39:28,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:39:28,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 08:39:28,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:39:28,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 08:39:28,812 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 08:39:28,812 INFO L87 Difference]: Start difference. First operand 766 states and 1049 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:39:29,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:39:29,031 INFO L93 Difference]: Finished difference Result 1464 states and 2006 transitions. [2025-02-06 08:39:29,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 08:39:29,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 168 [2025-02-06 08:39:29,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:39:29,034 INFO L225 Difference]: With dead ends: 1464 [2025-02-06 08:39:29,034 INFO L226 Difference]: Without dead ends: 809 [2025-02-06 08:39:29,035 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 08:39:29,035 INFO L435 NwaCegarLoop]: 439 mSDtfsCounter, 17 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 08:39:29,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1151 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 08:39:29,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2025-02-06 08:39:29,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 793. [2025-02-06 08:39:29,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 783 states have (on average 1.3639846743295019) internal successors, (1068), 786 states have internal predecessors, (1068), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-06 08:39:29,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1082 transitions. [2025-02-06 08:39:29,053 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1082 transitions. Word has length 168 [2025-02-06 08:39:29,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:39:29,053 INFO L471 AbstractCegarLoop]: Abstraction has 793 states and 1082 transitions. [2025-02-06 08:39:29,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:39:29,053 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1082 transitions. [2025-02-06 08:39:29,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2025-02-06 08:39:29,055 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:39:29,055 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:39:29,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 08:39:29,255 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 08:39:29,256 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:39:29,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:39:29,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1877283439, now seen corresponding path program 1 times [2025-02-06 08:39:29,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:39:29,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195962649] [2025-02-06 08:39:29,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:39:29,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:39:29,288 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 169 statements into 1 equivalence classes. [2025-02-06 08:39:29,307 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 169 of 169 statements. [2025-02-06 08:39:29,307 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:39:29,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:39:29,535 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 08:39:29,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:39:29,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195962649] [2025-02-06 08:39:29,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195962649] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:39:29,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:39:29,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 08:39:29,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951714792] [2025-02-06 08:39:29,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:39:29,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 08:39:29,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:39:29,537 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 08:39:29,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 08:39:29,537 INFO L87 Difference]: Start difference. First operand 793 states and 1082 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:39:29,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:39:29,938 INFO L93 Difference]: Finished difference Result 1483 states and 2025 transitions. [2025-02-06 08:39:29,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 08:39:29,939 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 169 [2025-02-06 08:39:29,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:39:29,941 INFO L225 Difference]: With dead ends: 1483 [2025-02-06 08:39:29,941 INFO L226 Difference]: Without dead ends: 805 [2025-02-06 08:39:29,942 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 08:39:29,943 INFO L435 NwaCegarLoop]: 438 mSDtfsCounter, 8 mSDsluCounter, 1280 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 08:39:29,943 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1718 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 08:39:29,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2025-02-06 08:39:29,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 801. [2025-02-06 08:39:29,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 791 states have (on average 1.3628318584070795) internal successors, (1078), 794 states have internal predecessors, (1078), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-06 08:39:29,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1092 transitions. [2025-02-06 08:39:29,964 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1092 transitions. Word has length 169 [2025-02-06 08:39:29,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:39:29,965 INFO L471 AbstractCegarLoop]: Abstraction has 801 states and 1092 transitions. [2025-02-06 08:39:29,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:39:29,965 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1092 transitions. [2025-02-06 08:39:29,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2025-02-06 08:39:29,966 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:39:29,966 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:39:29,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 08:39:29,966 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:39:29,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:39:29,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1127823204, now seen corresponding path program 1 times [2025-02-06 08:39:29,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:39:29,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157904959] [2025-02-06 08:39:29,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:39:29,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:39:29,996 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-02-06 08:39:30,019 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-02-06 08:39:30,019 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:39:30,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:39:30,237 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 08:39:30,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:39:30,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157904959] [2025-02-06 08:39:30,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157904959] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:39:30,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:39:30,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 08:39:30,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633285412] [2025-02-06 08:39:30,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:39:30,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 08:39:30,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:39:30,239 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 08:39:30,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-06 08:39:30,239 INFO L87 Difference]: Start difference. First operand 801 states and 1092 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:39:30,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:39:30,737 INFO L93 Difference]: Finished difference Result 1498 states and 2045 transitions. [2025-02-06 08:39:30,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 08:39:30,738 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 170 [2025-02-06 08:39:30,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:39:30,741 INFO L225 Difference]: With dead ends: 1498 [2025-02-06 08:39:30,741 INFO L226 Difference]: Without dead ends: 823 [2025-02-06 08:39:30,742 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 08:39:30,742 INFO L435 NwaCegarLoop]: 430 mSDtfsCounter, 12 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2033 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 08:39:30,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2033 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 08:39:30,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2025-02-06 08:39:30,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 817. [2025-02-06 08:39:30,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 807 states have (on average 1.3630731102850062) internal successors, (1100), 810 states have internal predecessors, (1100), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-06 08:39:30,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1114 transitions. [2025-02-06 08:39:30,762 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1114 transitions. Word has length 170 [2025-02-06 08:39:30,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:39:30,762 INFO L471 AbstractCegarLoop]: Abstraction has 817 states and 1114 transitions. [2025-02-06 08:39:30,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:39:30,763 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1114 transitions. [2025-02-06 08:39:30,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2025-02-06 08:39:30,764 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:39:30,764 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:39:30,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 08:39:30,765 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:39:30,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:39:30,765 INFO L85 PathProgramCache]: Analyzing trace with hash 345171607, now seen corresponding path program 1 times [2025-02-06 08:39:30,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:39:30,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598163559] [2025-02-06 08:39:30,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:39:30,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:39:30,798 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-02-06 08:39:30,920 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-02-06 08:39:30,921 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:39:30,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:39:31,106 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 08:39:31,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:39:31,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598163559] [2025-02-06 08:39:31,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598163559] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:39:31,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297627183] [2025-02-06 08:39:31,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:39:31,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:39:31,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:39:31,114 INFO L229 MonitoredProcess]: Starting monitored process 5 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 08:39:31,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 08:39:31,335 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 170 statements into 1 equivalence classes. [2025-02-06 08:39:31,465 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 170 of 170 statements. [2025-02-06 08:39:31,465 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:39:31,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:39:31,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-06 08:39:31,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:39:31,487 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 08:39:31,928 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 08:39:31,930 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 08:39:31,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297627183] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:39:31,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 08:39:31,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2025-02-06 08:39:31,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690900100] [2025-02-06 08:39:31,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:39:31,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 08:39:31,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:39:31,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 08:39:31,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-02-06 08:39:31,932 INFO L87 Difference]: Start difference. First operand 817 states and 1114 transitions. Second operand has 10 states, 10 states have (on average 16.1) internal successors, (161), 10 states have internal predecessors, (161), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:39:32,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:39:32,584 INFO L93 Difference]: Finished difference Result 1443 states and 1951 transitions. [2025-02-06 08:39:32,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 08:39:32,584 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.1) internal successors, (161), 10 states have internal predecessors, (161), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 170 [2025-02-06 08:39:32,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:39:32,588 INFO L225 Difference]: With dead ends: 1443 [2025-02-06 08:39:32,589 INFO L226 Difference]: Without dead ends: 1035 [2025-02-06 08:39:32,590 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2025-02-06 08:39:32,591 INFO L435 NwaCegarLoop]: 435 mSDtfsCounter, 464 mSDsluCounter, 1896 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 2331 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 08:39:32,591 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 2331 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 08:39:32,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2025-02-06 08:39:32,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 851. [2025-02-06 08:39:32,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 841 states have (on average 1.3495838287752675) internal successors, (1135), 844 states have internal predecessors, (1135), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-06 08:39:32,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1149 transitions. [2025-02-06 08:39:32,613 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1149 transitions. Word has length 170 [2025-02-06 08:39:32,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:39:32,613 INFO L471 AbstractCegarLoop]: Abstraction has 851 states and 1149 transitions. [2025-02-06 08:39:32,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.1) internal successors, (161), 10 states have internal predecessors, (161), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:39:32,613 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1149 transitions. [2025-02-06 08:39:32,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2025-02-06 08:39:32,615 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:39:32,615 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:39:32,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 08:39:32,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-02-06 08:39:32,816 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:39:32,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:39:32,816 INFO L85 PathProgramCache]: Analyzing trace with hash 508226363, now seen corresponding path program 1 times [2025-02-06 08:39:32,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:39:32,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810778546] [2025-02-06 08:39:32,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:39:32,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:39:32,854 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-02-06 08:39:32,939 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-02-06 08:39:32,939 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:39:32,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:39:33,056 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 08:39:33,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:39:33,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810778546] [2025-02-06 08:39:33,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810778546] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:39:33,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704720027] [2025-02-06 08:39:33,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:39:33,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:39:33,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:39:33,058 INFO L229 MonitoredProcess]: Starting monitored process 6 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 08:39:33,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 08:39:33,277 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 171 statements into 1 equivalence classes. [2025-02-06 08:39:33,349 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 171 of 171 statements. [2025-02-06 08:39:33,350 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:39:33,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:39:33,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 08:39:33,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:39:33,428 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 08:39:33,429 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 08:39:33,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704720027] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:39:33,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 08:39:33,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2025-02-06 08:39:33,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465188724] [2025-02-06 08:39:33,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:39:33,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 08:39:33,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:39:33,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 08:39:33,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-06 08:39:33,430 INFO L87 Difference]: Start difference. First operand 851 states and 1149 transitions. Second operand has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:39:33,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:39:33,733 INFO L93 Difference]: Finished difference Result 1265 states and 1704 transitions. [2025-02-06 08:39:33,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 08:39:33,734 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 171 [2025-02-06 08:39:33,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:39:33,737 INFO L225 Difference]: With dead ends: 1265 [2025-02-06 08:39:33,738 INFO L226 Difference]: Without dead ends: 857 [2025-02-06 08:39:33,739 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-06 08:39:33,739 INFO L435 NwaCegarLoop]: 430 mSDtfsCounter, 34 mSDsluCounter, 1439 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1869 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 08:39:33,740 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1869 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 08:39:33,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2025-02-06 08:39:33,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 851. [2025-02-06 08:39:33,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 841 states have (on average 1.3460166468489894) internal successors, (1132), 844 states have internal predecessors, (1132), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-06 08:39:33,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1146 transitions. [2025-02-06 08:39:33,760 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1146 transitions. Word has length 171 [2025-02-06 08:39:33,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:39:33,761 INFO L471 AbstractCegarLoop]: Abstraction has 851 states and 1146 transitions. [2025-02-06 08:39:33,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:39:33,761 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1146 transitions. [2025-02-06 08:39:33,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2025-02-06 08:39:33,762 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:39:33,762 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:39:33,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-06 08:39:33,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-02-06 08:39:33,963 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:39:33,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:39:33,964 INFO L85 PathProgramCache]: Analyzing trace with hash -2005544268, now seen corresponding path program 1 times [2025-02-06 08:39:33,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:39:33,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981192801] [2025-02-06 08:39:33,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:39:33,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:39:33,995 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 172 statements into 1 equivalence classes. [2025-02-06 08:39:34,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 172 of 172 statements. [2025-02-06 08:39:34,017 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:39:34,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:39:34,203 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 08:39:34,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:39:34,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981192801] [2025-02-06 08:39:34,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981192801] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:39:34,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:39:34,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 08:39:34,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821899316] [2025-02-06 08:39:34,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:39:34,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 08:39:34,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:39:34,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 08:39:34,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 08:39:34,205 INFO L87 Difference]: Start difference. First operand 851 states and 1146 transitions. Second operand has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:39:34,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:39:34,460 INFO L93 Difference]: Finished difference Result 1268 states and 1705 transitions. [2025-02-06 08:39:34,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 08:39:34,460 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 172 [2025-02-06 08:39:34,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:39:34,462 INFO L225 Difference]: With dead ends: 1268 [2025-02-06 08:39:34,462 INFO L226 Difference]: Without dead ends: 860 [2025-02-06 08:39:34,463 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 08:39:34,463 INFO L435 NwaCegarLoop]: 437 mSDtfsCounter, 8 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1925 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 08:39:34,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1925 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 08:39:34,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2025-02-06 08:39:34,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 860. [2025-02-06 08:39:34,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 850 states have (on average 1.3423529411764705) internal successors, (1141), 853 states have internal predecessors, (1141), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-06 08:39:34,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1155 transitions. [2025-02-06 08:39:34,483 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1155 transitions. Word has length 172 [2025-02-06 08:39:34,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:39:34,484 INFO L471 AbstractCegarLoop]: Abstraction has 860 states and 1155 transitions. [2025-02-06 08:39:34,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:39:34,484 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1155 transitions. [2025-02-06 08:39:34,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2025-02-06 08:39:34,485 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:39:34,485 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:39:34,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-06 08:39:34,485 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:39:34,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:39:34,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1649486057, now seen corresponding path program 1 times [2025-02-06 08:39:34,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:39:34,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786484116] [2025-02-06 08:39:34,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:39:34,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:39:34,516 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-02-06 08:39:34,536 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-02-06 08:39:34,536 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:39:34,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:39:34,697 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 08:39:34,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:39:34,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786484116] [2025-02-06 08:39:34,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786484116] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:39:34,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:39:34,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 08:39:34,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474928918] [2025-02-06 08:39:34,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:39:34,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 08:39:34,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:39:34,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 08:39:34,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-06 08:39:34,699 INFO L87 Difference]: Start difference. First operand 860 states and 1155 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:39:34,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:39:34,997 INFO L93 Difference]: Finished difference Result 1292 states and 1732 transitions. [2025-02-06 08:39:34,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 08:39:34,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 173 [2025-02-06 08:39:34,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:39:35,000 INFO L225 Difference]: With dead ends: 1292 [2025-02-06 08:39:35,000 INFO L226 Difference]: Without dead ends: 875 [2025-02-06 08:39:35,001 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 08:39:35,001 INFO L435 NwaCegarLoop]: 429 mSDtfsCounter, 12 mSDsluCounter, 1859 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 08:39:35,001 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2288 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 08:39:35,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2025-02-06 08:39:35,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 872. [2025-02-06 08:39:35,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 862 states have (on average 1.3410672853828307) internal successors, (1156), 865 states have internal predecessors, (1156), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-06 08:39:35,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1170 transitions. [2025-02-06 08:39:35,023 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1170 transitions. Word has length 173 [2025-02-06 08:39:35,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:39:35,023 INFO L471 AbstractCegarLoop]: Abstraction has 872 states and 1170 transitions. [2025-02-06 08:39:35,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:39:35,023 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1170 transitions. [2025-02-06 08:39:35,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2025-02-06 08:39:35,025 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:39:35,025 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:39:35,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-06 08:39:35,025 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:39:35,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:39:35,025 INFO L85 PathProgramCache]: Analyzing trace with hash -763537494, now seen corresponding path program 1 times [2025-02-06 08:39:35,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:39:35,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483958322] [2025-02-06 08:39:35,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:39:35,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:39:35,067 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-02-06 08:39:35,160 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-02-06 08:39:35,160 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:39:35,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:39:35,275 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 08:39:35,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:39:35,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483958322] [2025-02-06 08:39:35,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483958322] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:39:35,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953453658] [2025-02-06 08:39:35,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:39:35,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:39:35,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:39:35,282 INFO L229 MonitoredProcess]: Starting monitored process 7 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 08:39:35,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 08:39:35,518 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 173 statements into 1 equivalence classes. [2025-02-06 08:39:35,882 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 173 of 173 statements. [2025-02-06 08:39:35,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:39:35,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:39:35,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 08:39:35,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:39:59,188 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 08:39:59,189 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 08:39:59,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953453658] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:39:59,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 08:39:59,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2025-02-06 08:39:59,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330131048] [2025-02-06 08:39:59,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:39:59,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 08:39:59,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:39:59,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 08:39:59,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-06 08:39:59,190 INFO L87 Difference]: Start difference. First operand 872 states and 1170 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:40:00,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2025-02-06 08:40:01,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:40:01,186 INFO L93 Difference]: Finished difference Result 1316 states and 1762 transitions. [2025-02-06 08:40:01,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 08:40:01,187 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 173 [2025-02-06 08:40:01,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:40:01,190 INFO L225 Difference]: With dead ends: 1316 [2025-02-06 08:40:01,190 INFO L226 Difference]: Without dead ends: 887 [2025-02-06 08:40:01,190 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-06 08:40:01,191 INFO L435 NwaCegarLoop]: 434 mSDtfsCounter, 12 mSDsluCounter, 1860 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2294 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2025-02-06 08:40:01,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2294 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2025-02-06 08:40:01,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2025-02-06 08:40:01,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 872. [2025-02-06 08:40:01,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 862 states have (on average 1.3410672853828307) internal successors, (1156), 865 states have internal predecessors, (1156), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-06 08:40:01,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1170 transitions. [2025-02-06 08:40:01,209 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1170 transitions. Word has length 173 [2025-02-06 08:40:01,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:40:01,210 INFO L471 AbstractCegarLoop]: Abstraction has 872 states and 1170 transitions. [2025-02-06 08:40:01,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:40:01,210 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1170 transitions. [2025-02-06 08:40:01,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-02-06 08:40:01,211 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:40:01,211 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:40:01,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 08:40:01,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-06 08:40:01,416 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:40:01,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:40:01,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1095431597, now seen corresponding path program 1 times [2025-02-06 08:40:01,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:40:01,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145207230] [2025-02-06 08:40:01,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:40:01,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:40:01,452 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-02-06 08:40:01,480 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-02-06 08:40:01,481 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:40:01,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:40:01,730 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 08:40:01,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:40:01,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145207230] [2025-02-06 08:40:01,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145207230] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:40:01,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:40:01,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 08:40:01,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252435924] [2025-02-06 08:40:01,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:40:01,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 08:40:01,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:40:01,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 08:40:01,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 08:40:01,734 INFO L87 Difference]: Start difference. First operand 872 states and 1170 transitions. Second operand has 9 states, 9 states have (on average 18.333333333333332) internal successors, (165), 9 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:40:02,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:40:02,236 INFO L93 Difference]: Finished difference Result 1331 states and 1780 transitions. [2025-02-06 08:40:02,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 08:40:02,237 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.333333333333332) internal successors, (165), 9 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 174 [2025-02-06 08:40:02,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:40:02,241 INFO L225 Difference]: With dead ends: 1331 [2025-02-06 08:40:02,241 INFO L226 Difference]: Without dead ends: 902 [2025-02-06 08:40:02,242 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 08:40:02,242 INFO L435 NwaCegarLoop]: 429 mSDtfsCounter, 20 mSDsluCounter, 2666 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 3095 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 08:40:02,242 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 3095 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 08:40:02,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2025-02-06 08:40:02,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 893. [2025-02-06 08:40:02,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 883 states have (on average 1.3397508493771235) internal successors, (1183), 886 states have internal predecessors, (1183), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-06 08:40:02,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1197 transitions. [2025-02-06 08:40:02,261 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1197 transitions. Word has length 174 [2025-02-06 08:40:02,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:40:02,261 INFO L471 AbstractCegarLoop]: Abstraction has 893 states and 1197 transitions. [2025-02-06 08:40:02,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.333333333333332) internal successors, (165), 9 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:40:02,261 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1197 transitions. [2025-02-06 08:40:02,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-02-06 08:40:02,263 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:40:02,264 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:40:02,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-02-06 08:40:02,264 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:40:02,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:40:02,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1504934022, now seen corresponding path program 1 times [2025-02-06 08:40:02,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:40:02,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341859650] [2025-02-06 08:40:02,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:40:02,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:40:02,297 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-02-06 08:40:02,430 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-02-06 08:40:02,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:40:02,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:40:02,554 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 08:40:02,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:40:02,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341859650] [2025-02-06 08:40:02,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341859650] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:40:02,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163645169] [2025-02-06 08:40:02,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:40:02,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:40:02,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:40:02,556 INFO L229 MonitoredProcess]: Starting monitored process 8 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 08:40:02,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 08:40:02,807 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-02-06 08:40:02,899 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-02-06 08:40:02,899 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:40:02,899 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:40:02,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-06 08:40:02,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:40:03,025 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 08:40:03,025 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 08:40:03,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163645169] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:40:03,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 08:40:03,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2025-02-06 08:40:03,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732860781] [2025-02-06 08:40:03,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:40:03,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 08:40:03,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:40:03,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 08:40:03,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-02-06 08:40:03,028 INFO L87 Difference]: Start difference. First operand 893 states and 1197 transitions. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:40:03,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:40:03,473 INFO L93 Difference]: Finished difference Result 1373 states and 1834 transitions. [2025-02-06 08:40:03,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 08:40:03,473 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 174 [2025-02-06 08:40:03,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:40:03,476 INFO L225 Difference]: With dead ends: 1373 [2025-02-06 08:40:03,477 INFO L226 Difference]: Without dead ends: 923 [2025-02-06 08:40:03,478 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-02-06 08:40:03,478 INFO L435 NwaCegarLoop]: 437 mSDtfsCounter, 17 mSDsluCounter, 1901 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2338 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 08:40:03,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2338 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 08:40:03,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2025-02-06 08:40:03,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 908. [2025-02-06 08:40:03,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 898 states have (on average 1.3374164810690423) internal successors, (1201), 901 states have internal predecessors, (1201), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-06 08:40:03,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1215 transitions. [2025-02-06 08:40:03,493 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1215 transitions. Word has length 174 [2025-02-06 08:40:03,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:40:03,493 INFO L471 AbstractCegarLoop]: Abstraction has 908 states and 1215 transitions. [2025-02-06 08:40:03,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:40:03,494 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1215 transitions. [2025-02-06 08:40:03,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2025-02-06 08:40:03,495 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:40:03,495 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:40:03,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 08:40:03,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:40:03,696 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:40:03,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:40:03,697 INFO L85 PathProgramCache]: Analyzing trace with hash 807277232, now seen corresponding path program 1 times [2025-02-06 08:40:03,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:40:03,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031735438] [2025-02-06 08:40:03,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:40:03,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:40:03,746 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 175 statements into 1 equivalence classes. [2025-02-06 08:40:03,771 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 175 of 175 statements. [2025-02-06 08:40:03,771 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:40:03,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:40:04,026 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 08:40:04,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:40:04,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031735438] [2025-02-06 08:40:04,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031735438] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:40:04,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:40:04,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 08:40:04,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001388762] [2025-02-06 08:40:04,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:40:04,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 08:40:04,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:40:04,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 08:40:04,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-02-06 08:40:04,028 INFO L87 Difference]: Start difference. First operand 908 states and 1215 transitions. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:40:04,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:40:04,517 INFO L93 Difference]: Finished difference Result 1400 states and 1870 transitions. [2025-02-06 08:40:04,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 08:40:04,518 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 175 [2025-02-06 08:40:04,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:40:04,521 INFO L225 Difference]: With dead ends: 1400 [2025-02-06 08:40:04,521 INFO L226 Difference]: Without dead ends: 935 [2025-02-06 08:40:04,522 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-02-06 08:40:04,522 INFO L435 NwaCegarLoop]: 435 mSDtfsCounter, 26 mSDsluCounter, 2300 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2735 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 08:40:04,524 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2735 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 08:40:04,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2025-02-06 08:40:04,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 917. [2025-02-06 08:40:04,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 907 states have (on average 1.3340683572216097) internal successors, (1210), 910 states have internal predecessors, (1210), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-02-06 08:40:04,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1224 transitions. [2025-02-06 08:40:04,543 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1224 transitions. Word has length 175 [2025-02-06 08:40:04,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:40:04,543 INFO L471 AbstractCegarLoop]: Abstraction has 917 states and 1224 transitions. [2025-02-06 08:40:04,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:40:04,543 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1224 transitions. [2025-02-06 08:40:04,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2025-02-06 08:40:04,545 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:40:04,545 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:40:04,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-06 08:40:04,545 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:40:04,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:40:04,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1800321667, now seen corresponding path program 1 times [2025-02-06 08:40:04,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:40:04,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711062968] [2025-02-06 08:40:04,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:40:04,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:40:04,576 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 175 statements into 1 equivalence classes. [2025-02-06 08:40:04,636 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 175 of 175 statements. [2025-02-06 08:40:04,637 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:40:04,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:40:04,744 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 08:40:04,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:40:04,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711062968] [2025-02-06 08:40:04,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711062968] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:40:04,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566707794] [2025-02-06 08:40:04,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:40:04,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:40:04,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:40:04,746 INFO L229 MonitoredProcess]: Starting monitored process 9 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 08:40:04,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 08:40:05,016 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 175 statements into 1 equivalence classes. [2025-02-06 08:40:05,249 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 175 of 175 statements. [2025-02-06 08:40:05,250 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:40:05,250 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:40:05,255 INFO L256 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-06 08:40:05,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:40:05,265 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 08:40:05,314 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:40:05,314 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 08:40:05,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566707794] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:40:05,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 08:40:05,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 7 [2025-02-06 08:40:05,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647512533] [2025-02-06 08:40:05,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:40:05,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 08:40:05,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:40:05,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 08:40:05,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-06 08:40:05,315 INFO L87 Difference]: Start difference. First operand 917 states and 1224 transitions. Second operand has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 08:40:05,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:40:05,568 INFO L93 Difference]: Finished difference Result 1715 states and 2282 transitions. [2025-02-06 08:40:05,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 08:40:05,568 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 175 [2025-02-06 08:40:05,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:40:05,574 INFO L225 Difference]: With dead ends: 1715 [2025-02-06 08:40:05,575 INFO L226 Difference]: Without dead ends: 972 [2025-02-06 08:40:05,576 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-06 08:40:05,577 INFO L435 NwaCegarLoop]: 477 mSDtfsCounter, 263 mSDsluCounter, 1833 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 2310 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 08:40:05,577 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 2310 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 08:40:05,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2025-02-06 08:40:05,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 920. [2025-02-06 08:40:05,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 909 states have (on average 1.3344334433443343) internal successors, (1213), 913 states have internal predecessors, (1213), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2025-02-06 08:40:05,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1228 transitions. [2025-02-06 08:40:05,611 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1228 transitions. Word has length 175 [2025-02-06 08:40:05,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:40:05,612 INFO L471 AbstractCegarLoop]: Abstraction has 920 states and 1228 transitions. [2025-02-06 08:40:05,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 08:40:05,612 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1228 transitions. [2025-02-06 08:40:05,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2025-02-06 08:40:05,614 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:40:05,614 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:40:05,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 08:40:05,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:40:05,817 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:40:05,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:40:05,818 INFO L85 PathProgramCache]: Analyzing trace with hash -859333689, now seen corresponding path program 1 times [2025-02-06 08:40:05,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:40:05,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990315468] [2025-02-06 08:40:05,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:40:05,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:40:05,903 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-02-06 08:40:06,097 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-02-06 08:40:06,097 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:40:06,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:40:06,296 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 08:40:06,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:40:06,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990315468] [2025-02-06 08:40:06,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990315468] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:40:06,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65421606] [2025-02-06 08:40:06,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:40:06,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:40:06,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:40:06,302 INFO L229 MonitoredProcess]: Starting monitored process 10 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 08:40:06,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 08:40:06,580 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 177 statements into 1 equivalence classes. [2025-02-06 08:40:06,738 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 177 of 177 statements. [2025-02-06 08:40:06,738 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:40:06,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:40:06,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 126 conjuncts are in the unsatisfiable core [2025-02-06 08:40:06,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:40:06,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 08:40:06,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 08:40:07,016 INFO L349 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2025-02-06 08:40:07,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2025-02-06 08:40:07,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-06 08:40:07,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2025-02-06 08:40:07,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2025-02-06 08:40:07,343 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-02-06 08:40:07,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 51 [2025-02-06 08:40:07,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2025-02-06 08:40:10,948 INFO L224 Elim1Store]: Index analysis took 208 ms