./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 22b4144b7005899e18ff8135fa52f12863f7106dbe1ddb808d25d8593c5f8fc4 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 08:42:01,828 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 08:42:01,875 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 08:42:01,879 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 08:42:01,879 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 08:42:01,893 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 08:42:01,894 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 08:42:01,894 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 08:42:01,894 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 08:42:01,894 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 08:42:01,894 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 08:42:01,895 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 08:42:01,895 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 08:42:01,895 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 08:42:01,895 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 08:42:01,895 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 08:42:01,895 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 08:42:01,895 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 08:42:01,895 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 08:42:01,895 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 08:42:01,896 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 08:42:01,896 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 08:42:01,896 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 08:42:01,896 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 08:42:01,896 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 08:42:01,896 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 08:42:01,896 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 08:42:01,896 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 08:42:01,896 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 08:42:01,896 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 08:42:01,896 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 08:42:01,896 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 08:42:01,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 08:42:01,896 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 08:42:01,896 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 08:42:01,896 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 08:42:01,896 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 08:42:01,896 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 08:42:01,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 08:42:01,897 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 08:42:01,897 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 08:42:01,897 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 08:42:01,897 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 08:42:01,897 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 -> 22b4144b7005899e18ff8135fa52f12863f7106dbe1ddb808d25d8593c5f8fc4 [2025-02-06 08:42:02,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 08:42:02,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 08:42:02,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 08:42:02,096 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 08:42:02,097 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 08:42:02,098 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i [2025-02-06 08:42:03,231 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2d0a21bc9/eb370bfa14ec4c8ebf8d66affe1dbec5/FLAG41ca84ca1 [2025-02-06 08:42:03,613 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 08:42:03,614 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-1.i [2025-02-06 08:42:03,632 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2d0a21bc9/eb370bfa14ec4c8ebf8d66affe1dbec5/FLAG41ca84ca1 [2025-02-06 08:42:03,804 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/2d0a21bc9/eb370bfa14ec4c8ebf8d66affe1dbec5 [2025-02-06 08:42:03,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 08:42:03,807 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 08:42:03,807 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 08:42:03,808 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 08:42:03,810 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 08:42:03,811 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 08:42:03" (1/1) ... [2025-02-06 08:42:03,813 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57202234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:42:03, skipping insertion in model container [2025-02-06 08:42:03,813 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 08:42:03" (1/1) ... [2025-02-06 08:42:03,851 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 08:42:04,121 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_test7-1.i[33021,33034] [2025-02-06 08:42:04,207 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_test7-1.i[44124,44137] [2025-02-06 08:42:04,207 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_test7-1.i[44245,44258] [2025-02-06 08:42:04,212 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 08:42:04,225 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 08:42:04,261 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_test7-1.i[33021,33034] [2025-02-06 08:42:04,303 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_test7-1.i[44124,44137] [2025-02-06 08:42:04,304 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_test7-1.i[44245,44258] [2025-02-06 08:42:04,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 08:42:04,332 INFO L204 MainTranslator]: Completed translation [2025-02-06 08:42:04,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:42:04 WrapperNode [2025-02-06 08:42:04,332 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 08:42:04,333 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 08:42:04,333 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 08:42:04,333 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 08:42:04,337 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:42:04" (1/1) ... [2025-02-06 08:42:04,369 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:42:04" (1/1) ... [2025-02-06 08:42:04,420 INFO L138 Inliner]: procedures = 176, calls = 269, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1378 [2025-02-06 08:42:04,421 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 08:42:04,421 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 08:42:04,421 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 08:42:04,421 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 08:42:04,428 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:42:04" (1/1) ... [2025-02-06 08:42:04,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:42:04" (1/1) ... [2025-02-06 08:42:04,436 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:42:04" (1/1) ... [2025-02-06 08:42:04,498 INFO L175 MemorySlicer]: Split 253 memory accesses to 3 slices as follows [2, 217, 34]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 50, 4]. [2025-02-06 08:42:04,502 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:42:04" (1/1) ... [2025-02-06 08:42:04,503 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:42:04" (1/1) ... [2025-02-06 08:42:04,535 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:42:04" (1/1) ... [2025-02-06 08:42:04,538 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:42:04" (1/1) ... [2025-02-06 08:42:04,546 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:42:04" (1/1) ... [2025-02-06 08:42:04,551 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:42:04" (1/1) ... [2025-02-06 08:42:04,563 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 08:42:04,565 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 08:42:04,566 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 08:42:04,566 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 08:42:04,567 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:42:04" (1/1) ... [2025-02-06 08:42:04,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 08:42:04,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:42:04,595 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 08:42:04,602 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 08:42:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 08:42:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 08:42:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-06 08:42:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 08:42:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 08:42:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-06 08:42:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-02-06 08:42:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-02-06 08:42:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-02-06 08:42:04,619 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-02-06 08:42:04,619 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-02-06 08:42:04,620 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-02-06 08:42:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 08:42:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 08:42:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 08:42:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 08:42:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-02-06 08:42:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 08:42:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 08:42:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 08:42:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-02-06 08:42:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 08:42:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 08:42:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 08:42:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-06 08:42:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 08:42:04,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 08:42:04,796 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 08:42:04,797 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 08:42:05,787 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L713: 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 08:42:05,865 INFO L? ?]: Removed 311 outVars from TransFormulas that were not future-live. [2025-02-06 08:42:05,866 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 08:42:05,903 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 08:42:05,904 INFO L337 CfgBuilder]: Removed 1 assume(true) statements. [2025-02-06 08:42:05,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 08:42:05 BoogieIcfgContainer [2025-02-06 08:42:05,904 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 08:42:05,905 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 08:42:05,905 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 08:42:05,909 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 08:42:05,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 08:42:03" (1/3) ... [2025-02-06 08:42:05,909 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343554ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 08:42:05, skipping insertion in model container [2025-02-06 08:42:05,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 08:42:04" (2/3) ... [2025-02-06 08:42:05,910 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@343554ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 08:42:05, skipping insertion in model container [2025-02-06 08:42:05,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 08:42:05" (3/3) ... [2025-02-06 08:42:05,911 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test7-1.i [2025-02-06 08:42:05,921 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 08:42:05,922 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_JEN_test7-1.i that has 4 procedures, 399 locations, 1 initial locations, 38 loop locations, and 2 error locations. [2025-02-06 08:42:05,965 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 08:42:05,972 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;@41c2613e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 08:42:05,972 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-06 08:42:05,976 INFO L276 IsEmpty]: Start isEmpty. Operand has 391 states, 384 states have (on average 1.6197916666666667) internal successors, (622), 386 states have internal predecessors, (622), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 08:42:05,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-06 08:42:05,979 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:42:05,980 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:42:05,980 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:42:05,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:42:05,983 INFO L85 PathProgramCache]: Analyzing trace with hash -891001938, now seen corresponding path program 1 times [2025-02-06 08:42:05,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:42:05,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119972441] [2025-02-06 08:42:05,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:42:05,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:42:06,061 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 08:42:06,070 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 08:42:06,073 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:42:06,073 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:42:06,107 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 08:42:06,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:42:06,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119972441] [2025-02-06 08:42:06,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119972441] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:42:06,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:42:06,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 08:42:06,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085665998] [2025-02-06 08:42:06,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:42:06,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 08:42:06,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:42:06,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 08:42:06,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 08:42:06,129 INFO L87 Difference]: Start difference. First operand has 391 states, 384 states have (on average 1.6197916666666667) internal successors, (622), 386 states have internal predecessors, (622), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:42:06,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:42:06,222 INFO L93 Difference]: Finished difference Result 780 states and 1254 transitions. [2025-02-06 08:42:06,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 08:42:06,224 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-02-06 08:42:06,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:42:06,230 INFO L225 Difference]: With dead ends: 780 [2025-02-06 08:42:06,230 INFO L226 Difference]: Without dead ends: 388 [2025-02-06 08:42:06,233 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 08:42:06,235 INFO L435 NwaCegarLoop]: 522 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 08:42:06,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 522 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 08:42:06,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2025-02-06 08:42:06,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2025-02-06 08:42:06,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 382 states have (on average 1.4528795811518325) internal successors, (555), 383 states have internal predecessors, (555), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 08:42:06,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 561 transitions. [2025-02-06 08:42:06,286 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 561 transitions. Word has length 8 [2025-02-06 08:42:06,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:42:06,287 INFO L471 AbstractCegarLoop]: Abstraction has 388 states and 561 transitions. [2025-02-06 08:42:06,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:42:06,287 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 561 transitions. [2025-02-06 08:42:06,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-06 08:42:06,287 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:42:06,288 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:42:06,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 08:42:06,288 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:42:06,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:42:06,289 INFO L85 PathProgramCache]: Analyzing trace with hash 517460284, now seen corresponding path program 1 times [2025-02-06 08:42:06,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:42:06,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617668291] [2025-02-06 08:42:06,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:42:06,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:42:06,305 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 08:42:06,317 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 08:42:06,317 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:42:06,317 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:42:06,443 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 08:42:06,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:42:06,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617668291] [2025-02-06 08:42:06,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617668291] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:42:06,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:42:06,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 08:42:06,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375418884] [2025-02-06 08:42:06,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:42:06,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 08:42:06,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:42:06,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 08:42:06,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 08:42:06,445 INFO L87 Difference]: Start difference. First operand 388 states and 561 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:42:06,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:42:06,786 INFO L93 Difference]: Finished difference Result 958 states and 1389 transitions. [2025-02-06 08:42:06,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 08:42:06,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-02-06 08:42:06,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:42:06,790 INFO L225 Difference]: With dead ends: 958 [2025-02-06 08:42:06,790 INFO L226 Difference]: Without dead ends: 769 [2025-02-06 08:42:06,790 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 08:42:06,791 INFO L435 NwaCegarLoop]: 500 mSDtfsCounter, 545 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 08:42:06,791 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 1494 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 08:42:06,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2025-02-06 08:42:06,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 390. [2025-02-06 08:42:06,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 384 states have (on average 1.4505208333333333) internal successors, (557), 385 states have internal predecessors, (557), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 08:42:06,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 563 transitions. [2025-02-06 08:42:06,807 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 563 transitions. Word has length 10 [2025-02-06 08:42:06,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:42:06,807 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 563 transitions. [2025-02-06 08:42:06,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:42:06,808 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 563 transitions. [2025-02-06 08:42:06,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-02-06 08:42:06,813 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:42:06,813 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:42:06,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 08:42:06,813 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:42:06,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:42:06,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1059045116, now seen corresponding path program 1 times [2025-02-06 08:42:06,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:42:06,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470042228] [2025-02-06 08:42:06,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:42:06,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:42:06,847 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-02-06 08:42:06,890 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-02-06 08:42:06,894 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:42:06,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:42:07,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:42:07,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:42:07,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470042228] [2025-02-06 08:42:07,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470042228] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:42:07,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:42:07,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 08:42:07,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535120112] [2025-02-06 08:42:07,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:42:07,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 08:42:07,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:42:07,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 08:42:07,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 08:42:07,191 INFO L87 Difference]: Start difference. First operand 390 states and 563 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:42:07,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:42:07,349 INFO L93 Difference]: Finished difference Result 734 states and 1056 transitions. [2025-02-06 08:42:07,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 08:42:07,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2025-02-06 08:42:07,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:42:07,351 INFO L225 Difference]: With dead ends: 734 [2025-02-06 08:42:07,351 INFO L226 Difference]: Without dead ends: 348 [2025-02-06 08:42:07,352 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 08:42:07,353 INFO L435 NwaCegarLoop]: 427 mSDtfsCounter, 30 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 08:42:07,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1262 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 08:42:07,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2025-02-06 08:42:07,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 348. [2025-02-06 08:42:07,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 342 states have (on average 1.4035087719298245) internal successors, (480), 343 states have internal predecessors, (480), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 08:42:07,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 486 transitions. [2025-02-06 08:42:07,363 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 486 transitions. Word has length 85 [2025-02-06 08:42:07,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:42:07,363 INFO L471 AbstractCegarLoop]: Abstraction has 348 states and 486 transitions. [2025-02-06 08:42:07,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:42:07,363 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 486 transitions. [2025-02-06 08:42:07,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-02-06 08:42:07,365 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:42:07,365 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:42:07,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 08:42:07,365 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:42:07,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:42:07,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1389884021, now seen corresponding path program 1 times [2025-02-06 08:42:07,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:42:07,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156172427] [2025-02-06 08:42:07,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:42:07,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:42:07,412 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-02-06 08:42:07,427 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-02-06 08:42:07,427 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:42:07,427 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:42:07,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:42:07,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:42:07,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156172427] [2025-02-06 08:42:07,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156172427] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:42:07,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:42:07,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 08:42:07,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336648975] [2025-02-06 08:42:07,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:42:07,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 08:42:07,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:42:07,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 08:42:07,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 08:42:07,539 INFO L87 Difference]: Start difference. First operand 348 states and 486 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:42:07,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:42:07,627 INFO L93 Difference]: Finished difference Result 692 states and 968 transitions. [2025-02-06 08:42:07,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 08:42:07,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2025-02-06 08:42:07,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:42:07,630 INFO L225 Difference]: With dead ends: 692 [2025-02-06 08:42:07,631 INFO L226 Difference]: Without dead ends: 348 [2025-02-06 08:42:07,632 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 08:42:07,632 INFO L435 NwaCegarLoop]: 439 mSDtfsCounter, 1 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 08:42:07,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 856 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 08:42:07,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2025-02-06 08:42:07,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 348. [2025-02-06 08:42:07,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 342 states have (on average 1.394736842105263) internal successors, (477), 343 states have internal predecessors, (477), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 08:42:07,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 483 transitions. [2025-02-06 08:42:07,642 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 483 transitions. Word has length 85 [2025-02-06 08:42:07,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:42:07,642 INFO L471 AbstractCegarLoop]: Abstraction has 348 states and 483 transitions. [2025-02-06 08:42:07,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:42:07,643 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 483 transitions. [2025-02-06 08:42:07,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2025-02-06 08:42:07,644 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:42:07,645 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:42:07,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 08:42:07,645 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:42:07,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:42:07,645 INFO L85 PathProgramCache]: Analyzing trace with hash -2083276726, now seen corresponding path program 1 times [2025-02-06 08:42:07,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:42:07,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968088150] [2025-02-06 08:42:07,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:42:07,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:42:07,685 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 85 statements into 1 equivalence classes. [2025-02-06 08:42:07,703 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 85 of 85 statements. [2025-02-06 08:42:07,703 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:42:07,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:42:07,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 08:42:07,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:42:07,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968088150] [2025-02-06 08:42:07,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968088150] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:42:07,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:42:07,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 08:42:07,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691660522] [2025-02-06 08:42:07,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:42:07,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 08:42:07,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:42:07,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 08:42:07,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 08:42:07,783 INFO L87 Difference]: Start difference. First operand 348 states and 483 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:42:07,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:42:07,934 INFO L93 Difference]: Finished difference Result 941 states and 1318 transitions. [2025-02-06 08:42:07,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 08:42:07,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2025-02-06 08:42:07,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:42:07,937 INFO L225 Difference]: With dead ends: 941 [2025-02-06 08:42:07,937 INFO L226 Difference]: Without dead ends: 597 [2025-02-06 08:42:07,937 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 08:42:07,938 INFO L435 NwaCegarLoop]: 612 mSDtfsCounter, 294 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 08:42:07,938 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 1033 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 08:42:07,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2025-02-06 08:42:07,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 593. [2025-02-06 08:42:07,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 587 states have (on average 1.4105621805792163) internal successors, (828), 588 states have internal predecessors, (828), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 08:42:07,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 834 transitions. [2025-02-06 08:42:07,951 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 834 transitions. Word has length 85 [2025-02-06 08:42:07,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:42:07,951 INFO L471 AbstractCegarLoop]: Abstraction has 593 states and 834 transitions. [2025-02-06 08:42:07,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 08:42:07,951 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 834 transitions. [2025-02-06 08:42:07,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-02-06 08:42:07,953 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:42:07,953 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] [2025-02-06 08:42:07,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 08:42:07,953 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:42:07,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:42:07,954 INFO L85 PathProgramCache]: Analyzing trace with hash -39252116, now seen corresponding path program 1 times [2025-02-06 08:42:07,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:42:07,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394897513] [2025-02-06 08:42:07,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:42:07,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:42:07,986 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-02-06 08:42:08,017 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-02-06 08:42:08,017 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:42:08,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:42:08,263 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 08:42:08,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:42:08,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394897513] [2025-02-06 08:42:08,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394897513] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:42:08,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:42:08,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 08:42:08,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129882621] [2025-02-06 08:42:08,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:42:08,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 08:42:08,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:42:08,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 08:42:08,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 08:42:08,267 INFO L87 Difference]: Start difference. First operand 593 states and 834 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:42:08,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:42:08,419 INFO L93 Difference]: Finished difference Result 873 states and 1230 transitions. [2025-02-06 08:42:08,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 08:42:08,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 100 [2025-02-06 08:42:08,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:42:08,423 INFO L225 Difference]: With dead ends: 873 [2025-02-06 08:42:08,423 INFO L226 Difference]: Without dead ends: 869 [2025-02-06 08:42:08,423 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 08:42:08,424 INFO L435 NwaCegarLoop]: 426 mSDtfsCounter, 455 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 08:42:08,424 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 1272 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 08:42:08,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2025-02-06 08:42:08,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 595. [2025-02-06 08:42:08,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 589 states have (on average 1.4091680814940577) internal successors, (830), 590 states have internal predecessors, (830), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 08:42:08,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 836 transitions. [2025-02-06 08:42:08,438 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 836 transitions. Word has length 100 [2025-02-06 08:42:08,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:42:08,438 INFO L471 AbstractCegarLoop]: Abstraction has 595 states and 836 transitions. [2025-02-06 08:42:08,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:42:08,438 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 836 transitions. [2025-02-06 08:42:08,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-02-06 08:42:08,440 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:42:08,440 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:42:08,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 08:42:08,441 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:42:08,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:42:08,441 INFO L85 PathProgramCache]: Analyzing trace with hash -946931226, now seen corresponding path program 1 times [2025-02-06 08:42:08,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:42:08,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230478759] [2025-02-06 08:42:08,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:42:08,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:42:08,479 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-02-06 08:42:08,497 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-02-06 08:42:08,498 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:42:08,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:42:08,680 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 08:42:08,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:42:08,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230478759] [2025-02-06 08:42:08,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230478759] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:42:08,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:42:08,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 08:42:08,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85789665] [2025-02-06 08:42:08,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:42:08,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 08:42:08,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:42:08,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 08:42:08,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 08:42:08,682 INFO L87 Difference]: Start difference. First operand 595 states and 836 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:42:08,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:42:08,781 INFO L93 Difference]: Finished difference Result 858 states and 1214 transitions. [2025-02-06 08:42:08,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 08:42:08,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 153 [2025-02-06 08:42:08,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:42:08,783 INFO L225 Difference]: With dead ends: 858 [2025-02-06 08:42:08,783 INFO L226 Difference]: Without dead ends: 511 [2025-02-06 08:42:08,784 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 08:42:08,784 INFO L435 NwaCegarLoop]: 353 mSDtfsCounter, 30 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 08:42:08,784 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1040 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 08:42:08,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2025-02-06 08:42:08,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 511. [2025-02-06 08:42:08,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 505 states have (on average 1.3386138613861387) internal successors, (676), 506 states have internal predecessors, (676), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 08:42:08,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 682 transitions. [2025-02-06 08:42:08,795 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 682 transitions. Word has length 153 [2025-02-06 08:42:08,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:42:08,795 INFO L471 AbstractCegarLoop]: Abstraction has 511 states and 682 transitions. [2025-02-06 08:42:08,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:42:08,796 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 682 transitions. [2025-02-06 08:42:08,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2025-02-06 08:42:08,797 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:42:08,797 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:42:08,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 08:42:08,797 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:42:08,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:42:08,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1532688288, now seen corresponding path program 1 times [2025-02-06 08:42:08,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:42:08,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080477386] [2025-02-06 08:42:08,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:42:08,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:42:08,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 153 statements into 1 equivalence classes. [2025-02-06 08:42:08,869 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 153 of 153 statements. [2025-02-06 08:42:08,870 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:42:08,870 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:42:09,036 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 08:42:09,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:42:09,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080477386] [2025-02-06 08:42:09,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080477386] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:42:09,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:42:09,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 08:42:09,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866420187] [2025-02-06 08:42:09,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:42:09,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 08:42:09,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:42:09,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 08:42:09,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 08:42:09,038 INFO L87 Difference]: Start difference. First operand 511 states and 682 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:42:09,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:42:09,405 INFO L93 Difference]: Finished difference Result 1274 states and 1709 transitions. [2025-02-06 08:42:09,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 08:42:09,405 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 153 [2025-02-06 08:42:09,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:42:09,408 INFO L225 Difference]: With dead ends: 1274 [2025-02-06 08:42:09,409 INFO L226 Difference]: Without dead ends: 853 [2025-02-06 08:42:09,409 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-02-06 08:42:09,410 INFO L435 NwaCegarLoop]: 430 mSDtfsCounter, 1143 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 08:42:09,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1144 Valid, 1255 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 08:42:09,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2025-02-06 08:42:09,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 649. [2025-02-06 08:42:09,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 643 states have (on average 1.343701399688958) internal successors, (864), 644 states have internal predecessors, (864), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 08:42:09,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 870 transitions. [2025-02-06 08:42:09,427 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 870 transitions. Word has length 153 [2025-02-06 08:42:09,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:42:09,427 INFO L471 AbstractCegarLoop]: Abstraction has 649 states and 870 transitions. [2025-02-06 08:42:09,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:42:09,428 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 870 transitions. [2025-02-06 08:42:09,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2025-02-06 08:42:09,429 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:42:09,429 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:42:09,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 08:42:09,429 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:42:09,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:42:09,430 INFO L85 PathProgramCache]: Analyzing trace with hash 376018706, now seen corresponding path program 1 times [2025-02-06 08:42:09,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:42:09,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681281093] [2025-02-06 08:42:09,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:42:09,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:42:09,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-02-06 08:42:09,517 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-02-06 08:42:09,518 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:42:09,518 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:42:10,004 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:42:10,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:42:10,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681281093] [2025-02-06 08:42:10,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681281093] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:42:10,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541864539] [2025-02-06 08:42:10,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:42:10,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:42:10,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:42:10,007 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 08:42:10,009 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 08:42:10,193 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 163 statements into 1 equivalence classes. [2025-02-06 08:42:10,278 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 163 of 163 statements. [2025-02-06 08:42:10,278 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:42:10,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:42:10,283 INFO L256 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 08:42:10,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:42:10,307 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 08:42:10,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:42:10,558 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:42:10,558 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 08:42:10,813 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:42:10,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541864539] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 08:42:10,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 08:42:10,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 12 [2025-02-06 08:42:10,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687852231] [2025-02-06 08:42:10,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 08:42:10,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 08:42:10,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:42:10,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 08:42:10,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2025-02-06 08:42:10,816 INFO L87 Difference]: Start difference. First operand 649 states and 870 transitions. Second operand has 12 states, 12 states have (on average 26.916666666666668) internal successors, (323), 12 states have internal predecessors, (323), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-06 08:42:11,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:42:11,269 INFO L93 Difference]: Finished difference Result 2903 states and 3914 transitions. [2025-02-06 08:42:11,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 08:42:11,269 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 26.916666666666668) internal successors, (323), 12 states have internal predecessors, (323), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 163 [2025-02-06 08:42:11,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:42:11,277 INFO L225 Difference]: With dead ends: 2903 [2025-02-06 08:42:11,277 INFO L226 Difference]: Without dead ends: 2499 [2025-02-06 08:42:11,279 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 318 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2025-02-06 08:42:11,279 INFO L435 NwaCegarLoop]: 689 mSDtfsCounter, 1627 mSDsluCounter, 3486 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1631 SdHoareTripleChecker+Valid, 4175 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 08:42:11,279 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1631 Valid, 4175 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 08:42:11,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2499 states. [2025-02-06 08:42:11,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2499 to 991. [2025-02-06 08:42:11,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 981 states have (on average 1.3353720693170235) internal successors, (1310), 982 states have internal predecessors, (1310), 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 08:42:11,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1322 transitions. [2025-02-06 08:42:11,320 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1322 transitions. Word has length 163 [2025-02-06 08:42:11,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:42:11,320 INFO L471 AbstractCegarLoop]: Abstraction has 991 states and 1322 transitions. [2025-02-06 08:42:11,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 26.916666666666668) internal successors, (323), 12 states have internal predecessors, (323), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-06 08:42:11,320 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1322 transitions. [2025-02-06 08:42:11,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2025-02-06 08:42:11,323 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:42:11,323 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:42:11,336 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 08:42:11,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:42:11,527 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:42:11,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:42:11,528 INFO L85 PathProgramCache]: Analyzing trace with hash 825938916, now seen corresponding path program 1 times [2025-02-06 08:42:11,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:42:11,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944143096] [2025-02-06 08:42:11,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:42:11,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:42:11,645 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 388 statements into 1 equivalence classes. [2025-02-06 08:42:11,773 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 388 of 388 statements. [2025-02-06 08:42:11,773 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:42:11,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:42:13,967 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 0 proven. 452 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:42:13,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:42:13,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944143096] [2025-02-06 08:42:13,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944143096] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:42:13,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361447741] [2025-02-06 08:42:13,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:42:13,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:42:13,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:42:13,974 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 08:42:13,975 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 08:42:14,287 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 388 statements into 1 equivalence classes. [2025-02-06 08:42:14,515 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 388 of 388 statements. [2025-02-06 08:42:14,516 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:42:14,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:42:14,525 INFO L256 TraceCheckSpWp]: Trace formula consists of 1896 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-06 08:42:14,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:42:14,547 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 08:42:14,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:42:14,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:42:14,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:42:15,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:42:15,047 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 0 proven. 452 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:42:15,047 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 08:42:15,464 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 0 proven. 452 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:42:15,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361447741] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 08:42:15,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 08:42:15,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 8] total 23 [2025-02-06 08:42:15,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244060579] [2025-02-06 08:42:15,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 08:42:15,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 08:42:15,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:42:15,471 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 08:42:15,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=339, Unknown=0, NotChecked=0, Total=506 [2025-02-06 08:42:15,472 INFO L87 Difference]: Start difference. First operand 991 states and 1322 transitions. Second operand has 23 states, 23 states have (on average 43.391304347826086) internal successors, (998), 23 states have internal predecessors, (998), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-06 08:42:16,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:42:16,727 INFO L93 Difference]: Finished difference Result 6161 states and 8315 transitions. [2025-02-06 08:42:16,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-06 08:42:16,729 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 43.391304347826086) internal successors, (998), 23 states have internal predecessors, (998), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 388 [2025-02-06 08:42:16,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:42:16,746 INFO L225 Difference]: With dead ends: 6161 [2025-02-06 08:42:16,746 INFO L226 Difference]: Without dead ends: 5757 [2025-02-06 08:42:16,749 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 797 GetRequests, 764 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=296, Invalid=696, Unknown=0, NotChecked=0, Total=992 [2025-02-06 08:42:16,750 INFO L435 NwaCegarLoop]: 1709 mSDtfsCounter, 7724 mSDsluCounter, 12324 mSDsCounter, 0 mSdLazyCounter, 1522 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7734 SdHoareTripleChecker+Valid, 14033 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-06 08:42:16,750 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7734 Valid, 14033 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1522 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-06 08:42:16,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5757 states. [2025-02-06 08:42:16,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5757 to 1843. [2025-02-06 08:42:16,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1843 states, 1827 states have (on average 1.3278598795840175) internal successors, (2426), 1828 states have internal predecessors, (2426), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-02-06 08:42:16,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2450 transitions. [2025-02-06 08:42:16,829 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2450 transitions. Word has length 388 [2025-02-06 08:42:16,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:42:16,829 INFO L471 AbstractCegarLoop]: Abstraction has 1843 states and 2450 transitions. [2025-02-06 08:42:16,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 43.391304347826086) internal successors, (998), 23 states have internal predecessors, (998), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-06 08:42:16,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2450 transitions. [2025-02-06 08:42:16,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2025-02-06 08:42:16,844 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:42:16,845 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:42:16,859 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 08:42:17,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:42:17,046 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:42:17,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:42:17,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1856833956, now seen corresponding path program 2 times [2025-02-06 08:42:17,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:42:17,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084955969] [2025-02-06 08:42:17,047 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 08:42:17,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:42:17,298 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 838 statements into 2 equivalence classes. [2025-02-06 08:42:17,311 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 73 of 838 statements. [2025-02-06 08:42:17,311 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 08:42:17,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:42:17,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3381 trivial. 0 not checked. [2025-02-06 08:42:17,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:42:17,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084955969] [2025-02-06 08:42:17,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084955969] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:42:17,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:42:17,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 08:42:17,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684429414] [2025-02-06 08:42:17,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:42:17,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 08:42:17,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:42:17,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 08:42:17,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 08:42:17,438 INFO L87 Difference]: Start difference. First operand 1843 states and 2450 transitions. Second operand has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:42:17,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:42:17,728 INFO L93 Difference]: Finished difference Result 2259 states and 3019 transitions. [2025-02-06 08:42:17,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 08:42:17,728 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 838 [2025-02-06 08:42:17,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:42:17,734 INFO L225 Difference]: With dead ends: 2259 [2025-02-06 08:42:17,734 INFO L226 Difference]: Without dead ends: 1858 [2025-02-06 08:42:17,734 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-06 08:42:17,735 INFO L435 NwaCegarLoop]: 358 mSDtfsCounter, 14 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1526 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 08:42:17,735 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1526 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 08:42:17,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2025-02-06 08:42:17,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1849. [2025-02-06 08:42:17,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1849 states, 1833 states have (on average 1.3267866884888162) internal successors, (2432), 1834 states have internal predecessors, (2432), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-02-06 08:42:17,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 2456 transitions. [2025-02-06 08:42:17,777 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 2456 transitions. Word has length 838 [2025-02-06 08:42:17,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:42:17,778 INFO L471 AbstractCegarLoop]: Abstraction has 1849 states and 2456 transitions. [2025-02-06 08:42:17,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:42:17,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 2456 transitions. [2025-02-06 08:42:17,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 840 [2025-02-06 08:42:17,791 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:42:17,791 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:42:17,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 08:42:17,792 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:42:17,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:42:17,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1705808857, now seen corresponding path program 1 times [2025-02-06 08:42:17,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:42:17,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670814172] [2025-02-06 08:42:17,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:42:17,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:42:17,958 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 839 statements into 1 equivalence classes. [2025-02-06 08:42:18,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 839 of 839 statements. [2025-02-06 08:42:18,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:42:18,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:42:19,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3381 trivial. 0 not checked. [2025-02-06 08:42:19,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:42:19,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670814172] [2025-02-06 08:42:19,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670814172] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:42:19,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:42:19,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 08:42:19,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103983691] [2025-02-06 08:42:19,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:42:19,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 08:42:19,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:42:19,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 08:42:19,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-06 08:42:19,410 INFO L87 Difference]: Start difference. First operand 1849 states and 2456 transitions. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:42:19,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:42:19,683 INFO L93 Difference]: Finished difference Result 2271 states and 3031 transitions. [2025-02-06 08:42:19,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 08:42:19,684 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 839 [2025-02-06 08:42:19,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:42:19,690 INFO L225 Difference]: With dead ends: 2271 [2025-02-06 08:42:19,691 INFO L226 Difference]: Without dead ends: 1864 [2025-02-06 08:42:19,691 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 08:42:19,692 INFO L435 NwaCegarLoop]: 353 mSDtfsCounter, 15 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 08:42:19,693 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1832 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 08:42:19,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2025-02-06 08:42:19,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1861. [2025-02-06 08:42:19,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1861 states, 1845 states have (on average 1.3262872628726288) internal successors, (2447), 1846 states have internal predecessors, (2447), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2025-02-06 08:42:19,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 2471 transitions. [2025-02-06 08:42:19,735 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 2471 transitions. Word has length 839 [2025-02-06 08:42:19,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:42:19,736 INFO L471 AbstractCegarLoop]: Abstraction has 1861 states and 2471 transitions. [2025-02-06 08:42:19,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:42:19,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 2471 transitions. [2025-02-06 08:42:19,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 840 [2025-02-06 08:42:19,793 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:42:19,793 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:42:19,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 08:42:19,794 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:42:19,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:42:19,794 INFO L85 PathProgramCache]: Analyzing trace with hash -607012384, now seen corresponding path program 1 times [2025-02-06 08:42:19,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:42:19,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757574362] [2025-02-06 08:42:19,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:42:19,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:42:19,968 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 839 statements into 1 equivalence classes. [2025-02-06 08:42:20,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 839 of 839 statements. [2025-02-06 08:42:20,186 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:42:20,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:42:27,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3381 backedges. 0 proven. 3377 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:42:27,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:42:27,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757574362] [2025-02-06 08:42:27,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757574362] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:42:27,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976678707] [2025-02-06 08:42:27,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:42:27,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:42:27,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:42:27,595 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 08:42:27,597 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 08:42:28,284 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 839 statements into 1 equivalence classes. [2025-02-06 08:42:28,789 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 839 of 839 statements. [2025-02-06 08:42:28,789 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:42:28,789 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:42:28,809 INFO L256 TraceCheckSpWp]: Trace formula consists of 4159 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-06 08:42:28,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:42:28,836 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 08:42:29,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:42:29,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:42:29,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:42:29,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:42:29,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:42:29,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:42:29,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:42:29,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:42:29,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:42:30,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:42:30,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3381 backedges. 0 proven. 3377 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:42:30,081 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 08:42:31,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3381 backedges. 0 proven. 3377 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:42:31,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976678707] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 08:42:31,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 08:42:31,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 14] total 42 [2025-02-06 08:42:31,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130551587] [2025-02-06 08:42:31,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 08:42:31,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-02-06 08:42:31,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:42:31,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-02-06 08:42:31,104 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=1127, Unknown=0, NotChecked=0, Total=1722 [2025-02-06 08:42:31,104 INFO L87 Difference]: Start difference. First operand 1861 states and 2471 transitions. Second operand has 42 states, 42 states have (on average 55.92857142857143) internal successors, (2349), 42 states have internal predecessors, (2349), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-06 08:42:35,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:42:35,174 INFO L93 Difference]: Finished difference Result 13097 states and 17607 transitions. [2025-02-06 08:42:35,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2025-02-06 08:42:35,175 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 55.92857142857143) internal successors, (2349), 42 states have internal predecessors, (2349), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 839 [2025-02-06 08:42:35,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:42:35,216 INFO L225 Difference]: With dead ends: 13097 [2025-02-06 08:42:35,216 INFO L226 Difference]: Without dead ends: 12675 [2025-02-06 08:42:35,223 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1719 GetRequests, 1655 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1333 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1128, Invalid=2778, Unknown=0, NotChecked=0, Total=3906 [2025-02-06 08:42:35,224 INFO L435 NwaCegarLoop]: 3749 mSDtfsCounter, 19236 mSDsluCounter, 50858 mSDsCounter, 0 mSdLazyCounter, 5829 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19258 SdHoareTripleChecker+Valid, 54607 SdHoareTripleChecker+Invalid, 5918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 5829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-02-06 08:42:35,224 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19258 Valid, 54607 Invalid, 5918 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [89 Valid, 5829 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-02-06 08:42:35,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12675 states. [2025-02-06 08:42:35,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12675 to 3565. [2025-02-06 08:42:35,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3565 states, 3537 states have (on average 1.3228724908114222) internal successors, (4679), 3538 states have internal predecessors, (4679), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-02-06 08:42:35,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3565 states to 3565 states and 4727 transitions. [2025-02-06 08:42:35,366 INFO L78 Accepts]: Start accepts. Automaton has 3565 states and 4727 transitions. Word has length 839 [2025-02-06 08:42:35,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:42:35,367 INFO L471 AbstractCegarLoop]: Abstraction has 3565 states and 4727 transitions. [2025-02-06 08:42:35,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 55.92857142857143) internal successors, (2349), 42 states have internal predecessors, (2349), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-06 08:42:35,368 INFO L276 IsEmpty]: Start isEmpty. Operand 3565 states and 4727 transitions. [2025-02-06 08:42:35,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1740 [2025-02-06 08:42:35,384 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:42:35,385 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:42:35,403 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 08:42:35,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:42:35,587 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:42:35,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:42:35,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1136783776, now seen corresponding path program 2 times [2025-02-06 08:42:35,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:42:35,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292389256] [2025-02-06 08:42:35,588 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 08:42:35,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:42:36,057 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 1739 statements into 2 equivalence classes. [2025-02-06 08:42:36,068 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 74 of 1739 statements. [2025-02-06 08:42:36,068 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 08:42:36,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:42:36,167 INFO L134 CoverageAnalysis]: Checked inductivity of 17331 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17331 trivial. 0 not checked. [2025-02-06 08:42:36,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:42:36,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292389256] [2025-02-06 08:42:36,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292389256] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:42:36,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:42:36,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 08:42:36,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655616161] [2025-02-06 08:42:36,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:42:36,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 08:42:36,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:42:36,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 08:42:36,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 08:42:36,169 INFO L87 Difference]: Start difference. First operand 3565 states and 4727 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:42:36,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:42:36,470 INFO L93 Difference]: Finished difference Result 3984 states and 5293 transitions. [2025-02-06 08:42:36,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 08:42:36,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 1739 [2025-02-06 08:42:36,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:42:36,477 INFO L225 Difference]: With dead ends: 3984 [2025-02-06 08:42:36,477 INFO L226 Difference]: Without dead ends: 3565 [2025-02-06 08:42:36,478 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 08:42:36,478 INFO L435 NwaCegarLoop]: 362 mSDtfsCounter, 17 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 08:42:36,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 971 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 08:42:36,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3565 states. [2025-02-06 08:42:36,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3565 to 3565. [2025-02-06 08:42:36,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3565 states, 3537 states have (on average 1.3220243143907267) internal successors, (4676), 3538 states have internal predecessors, (4676), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-02-06 08:42:36,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3565 states to 3565 states and 4724 transitions. [2025-02-06 08:42:36,541 INFO L78 Accepts]: Start accepts. Automaton has 3565 states and 4724 transitions. Word has length 1739 [2025-02-06 08:42:36,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:42:36,542 INFO L471 AbstractCegarLoop]: Abstraction has 3565 states and 4724 transitions. [2025-02-06 08:42:36,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:42:36,542 INFO L276 IsEmpty]: Start isEmpty. Operand 3565 states and 4724 transitions. [2025-02-06 08:42:36,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1741 [2025-02-06 08:42:36,600 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:42:36,600 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:42:36,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-06 08:42:36,604 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:42:36,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:42:36,605 INFO L85 PathProgramCache]: Analyzing trace with hash 849292683, now seen corresponding path program 1 times [2025-02-06 08:42:36,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:42:36,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749281228] [2025-02-06 08:42:36,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:42:36,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:42:37,153 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1740 statements into 1 equivalence classes. [2025-02-06 08:42:38,170 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1740 of 1740 statements. [2025-02-06 08:42:38,170 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:42:38,170 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:42:41,961 INFO L134 CoverageAnalysis]: Checked inductivity of 17331 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17331 trivial. 0 not checked. [2025-02-06 08:42:41,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:42:41,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749281228] [2025-02-06 08:42:41,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749281228] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 08:42:41,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 08:42:41,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 08:42:41,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622379284] [2025-02-06 08:42:41,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 08:42:41,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 08:42:41,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:42:41,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 08:42:41,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-06 08:42:41,963 INFO L87 Difference]: Start difference. First operand 3565 states and 4724 transitions. Second operand has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:42:42,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 08:42:42,438 INFO L93 Difference]: Finished difference Result 4023 states and 5350 transitions. [2025-02-06 08:42:42,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 08:42:42,438 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 1740 [2025-02-06 08:42:42,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 08:42:42,446 INFO L225 Difference]: With dead ends: 4023 [2025-02-06 08:42:42,446 INFO L226 Difference]: Without dead ends: 3604 [2025-02-06 08:42:42,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-02-06 08:42:42,449 INFO L435 NwaCegarLoop]: 354 mSDtfsCounter, 33 mSDsluCounter, 2132 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 2486 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 08:42:42,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 2486 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 08:42:42,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3604 states. [2025-02-06 08:42:42,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3604 to 3595. [2025-02-06 08:42:42,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3595 states, 3567 states have (on average 1.3226801233529577) internal successors, (4718), 3568 states have internal predecessors, (4718), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2025-02-06 08:42:42,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3595 states to 3595 states and 4766 transitions. [2025-02-06 08:42:42,541 INFO L78 Accepts]: Start accepts. Automaton has 3595 states and 4766 transitions. Word has length 1740 [2025-02-06 08:42:42,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 08:42:42,542 INFO L471 AbstractCegarLoop]: Abstraction has 3595 states and 4766 transitions. [2025-02-06 08:42:42,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 9 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 08:42:42,542 INFO L276 IsEmpty]: Start isEmpty. Operand 3595 states and 4766 transitions. [2025-02-06 08:42:42,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1741 [2025-02-06 08:42:42,558 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 08:42:42,559 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 08:42:42,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-06 08:42:42,559 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-06 08:42:42,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 08:42:42,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1637494727, now seen corresponding path program 1 times [2025-02-06 08:42:42,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 08:42:42,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148336911] [2025-02-06 08:42:42,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:42:42,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 08:42:42,894 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1740 statements into 1 equivalence classes. [2025-02-06 08:42:43,614 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1740 of 1740 statements. [2025-02-06 08:42:43,618 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:42:43,618 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:43:18,013 INFO L134 CoverageAnalysis]: Checked inductivity of 17331 backedges. 0 proven. 17327 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:43:18,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 08:43:18,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148336911] [2025-02-06 08:43:18,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148336911] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 08:43:18,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458033954] [2025-02-06 08:43:18,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 08:43:18,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 08:43:18,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 08:43:18,021 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 08:43:18,022 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 08:43:19,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1740 statements into 1 equivalence classes. [2025-02-06 08:43:20,221 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1740 of 1740 statements. [2025-02-06 08:43:20,221 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 08:43:20,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 08:43:20,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 8684 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-02-06 08:43:20,314 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 08:43:20,325 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 08:43:20,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:43:20,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:43:20,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:43:20,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:43:20,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:43:20,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:43:21,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:43:21,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:43:21,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:43:21,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:43:21,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:43:21,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:43:21,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:43:21,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:43:21,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:43:21,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:43:21,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:43:22,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:43:22,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:43:22,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:43:22,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:43:22,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-02-06 08:43:22,474 INFO L134 CoverageAnalysis]: Checked inductivity of 17331 backedges. 0 proven. 17327 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:43:22,474 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 08:43:24,736 INFO L134 CoverageAnalysis]: Checked inductivity of 17331 backedges. 0 proven. 17327 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 08:43:24,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458033954] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 08:43:24,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 08:43:24,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 27, 26] total 79 [2025-02-06 08:43:24,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474985026] [2025-02-06 08:43:24,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 08:43:24,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2025-02-06 08:43:24,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 08:43:24,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2025-02-06 08:43:24,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2226, Invalid=3936, Unknown=0, NotChecked=0, Total=6162 [2025-02-06 08:43:24,751 INFO L87 Difference]: Start difference. First operand 3595 states and 4766 transitions. Second operand has 79 states, 79 states have (on average 63.924050632911396) internal successors, (5050), 79 states have internal predecessors, (5050), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6)