./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b06fba6fbf61d996c1af57497d908c6dba492febf0212a36ee7b28f5806d365e --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 21:19:05,781 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 21:19:05,839 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 21:19:05,845 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 21:19:05,847 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 21:19:05,870 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 21:19:05,871 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 21:19:05,872 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 21:19:05,872 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 21:19:05,872 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 21:19:05,872 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 21:19:05,873 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 21:19:05,873 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 21:19:05,873 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 21:19:05,873 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 21:19:05,873 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 21:19:05,873 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 21:19:05,874 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 21:19:05,874 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 21:19:05,874 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 21:19:05,874 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 21:19:05,874 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 21:19:05,874 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 21:19:05,874 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 21:19:05,875 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 21:19:05,875 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 21:19:05,875 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 21:19:05,875 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 21:19:05,875 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 21:19:05,875 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 21:19:05,875 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 21:19:05,875 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 21:19:05,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 21:19:05,875 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 21:19:05,876 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 21:19:05,876 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 21:19:05,876 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 21:19:05,876 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 21:19:05,876 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 21:19:05,876 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 21:19:05,876 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 21:19:05,876 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 21:19:05,876 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 21:19:05,877 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b06fba6fbf61d996c1af57497d908c6dba492febf0212a36ee7b28f5806d365e [2025-03-08 21:19:06,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 21:19:06,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 21:19:06,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 21:19:06,095 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 21:19:06,095 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 21:19:06,097 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i [2025-03-08 21:19:07,191 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bed41a85/66a5b8cfccc947e09b90e1789b2f76d6/FLAGd51069f83 [2025-03-08 21:19:07,549 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 21:19:07,550 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i [2025-03-08 21:19:07,570 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bed41a85/66a5b8cfccc947e09b90e1789b2f76d6/FLAGd51069f83 [2025-03-08 21:19:07,587 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bed41a85/66a5b8cfccc947e09b90e1789b2f76d6 [2025-03-08 21:19:07,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 21:19:07,590 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 21:19:07,593 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 21:19:07,593 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 21:19:07,597 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 21:19:07,597 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 09:19:07" (1/1) ... [2025-03-08 21:19:07,598 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7729f0e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:19:07, skipping insertion in model container [2025-03-08 21:19:07,599 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 09:19:07" (1/1) ... [2025-03-08 21:19:07,642 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 21:19:07,883 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i[33022,33035] [2025-03-08 21:19:08,030 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 21:19:08,040 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 21:19:08,069 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-1.i[33022,33035] [2025-03-08 21:19:08,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 21:19:08,176 INFO L204 MainTranslator]: Completed translation [2025-03-08 21:19:08,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:19:08 WrapperNode [2025-03-08 21:19:08,177 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 21:19:08,177 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 21:19:08,177 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 21:19:08,177 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 21:19:08,181 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:19:08" (1/1) ... [2025-03-08 21:19:08,206 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:19:08" (1/1) ... [2025-03-08 21:19:08,286 INFO L138 Inliner]: procedures = 177, calls = 506, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3305 [2025-03-08 21:19:08,287 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 21:19:08,287 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 21:19:08,288 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 21:19:08,288 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 21:19:08,294 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:19:08" (1/1) ... [2025-03-08 21:19:08,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:19:08" (1/1) ... [2025-03-08 21:19:08,315 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:19:08" (1/1) ... [2025-03-08 21:19:08,434 INFO L175 MemorySlicer]: Split 480 memory accesses to 3 slices as follows [2, 372, 106]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 86 writes are split as follows [0, 82, 4]. [2025-03-08 21:19:08,434 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:19:08" (1/1) ... [2025-03-08 21:19:08,434 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:19:08" (1/1) ... [2025-03-08 21:19:08,474 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:19:08" (1/1) ... [2025-03-08 21:19:08,482 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:19:08" (1/1) ... [2025-03-08 21:19:08,496 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:19:08" (1/1) ... [2025-03-08 21:19:08,505 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:19:08" (1/1) ... [2025-03-08 21:19:08,523 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 21:19:08,524 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 21:19:08,524 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 21:19:08,525 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 21:19:08,525 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:19:08" (1/1) ... [2025-03-08 21:19:08,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 21:19:08,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 21:19:08,552 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 21:19:08,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 21:19:08,574 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2025-03-08 21:19:08,576 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2025-03-08 21:19:08,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 21:19:08,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 21:19:08,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 21:19:08,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-08 21:19:08,577 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-08 21:19:08,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 21:19:08,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 21:19:08,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 21:19:08,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-08 21:19:08,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-08 21:19:08,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-08 21:19:08,577 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-08 21:19:08,577 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-08 21:19:08,577 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-08 21:19:08,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-08 21:19:08,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 21:19:08,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-08 21:19:08,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-08 21:19:08,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-08 21:19:08,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-08 21:19:08,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-08 21:19:08,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-08 21:19:08,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-08 21:19:08,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 21:19:08,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 21:19:08,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 21:19:08,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 21:19:08,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 21:19:08,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 21:19:08,800 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 21:19:08,802 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 21:19:10,704 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L731: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-03-08 21:19:10,876 INFO L? ?]: Removed 780 outVars from TransFormulas that were not future-live. [2025-03-08 21:19:10,876 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 21:19:10,961 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 21:19:10,966 INFO L336 CfgBuilder]: Removed 2 assume(true) statements. [2025-03-08 21:19:10,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 09:19:10 BoogieIcfgContainer [2025-03-08 21:19:10,966 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 21:19:10,968 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 21:19:10,968 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 21:19:10,973 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 21:19:10,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 09:19:07" (1/3) ... [2025-03-08 21:19:10,974 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47f0450e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 09:19:10, skipping insertion in model container [2025-03-08 21:19:10,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:19:08" (2/3) ... [2025-03-08 21:19:10,974 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47f0450e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 09:19:10, skipping insertion in model container [2025-03-08 21:19:10,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 09:19:10" (3/3) ... [2025-03-08 21:19:10,975 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test10-1.i [2025-03-08 21:19:10,986 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 21:19:10,988 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_JEN_test10-1.i that has 6 procedures, 1024 locations, 1 initial locations, 78 loop locations, and 1 error locations. [2025-03-08 21:19:11,058 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 21:19:11,067 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;@b0fdaee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 21:19:11,068 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 21:19:11,075 INFO L276 IsEmpty]: Start isEmpty. Operand has 1016 states, 997 states have (on average 1.6248746238716147) internal successors, (1620), 1002 states have internal predecessors, (1620), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2025-03-08 21:19:11,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-03-08 21:19:11,081 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:19:11,082 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:19:11,082 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:19:11,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:19:11,086 INFO L85 PathProgramCache]: Analyzing trace with hash -380536812, now seen corresponding path program 1 times [2025-03-08 21:19:11,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:19:11,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003150397] [2025-03-08 21:19:11,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:19:11,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:19:11,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-08 21:19:11,184 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-08 21:19:11,185 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:19:11,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:19:11,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:19:11,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:19:11,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003150397] [2025-03-08 21:19:11,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003150397] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:19:11,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:19:11,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-08 21:19:11,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453481174] [2025-03-08 21:19:11,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:19:11,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-08 21:19:11,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:19:11,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-08 21:19:11,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 21:19:11,262 INFO L87 Difference]: Start difference. First operand has 1016 states, 997 states have (on average 1.6248746238716147) internal successors, (1620), 1002 states have internal predecessors, (1620), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:19:11,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:19:11,474 INFO L93 Difference]: Finished difference Result 2030 states and 3302 transitions. [2025-03-08 21:19:11,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-08 21:19:11,476 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-03-08 21:19:11,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:19:11,492 INFO L225 Difference]: With dead ends: 2030 [2025-03-08 21:19:11,492 INFO L226 Difference]: Without dead ends: 1012 [2025-03-08 21:19:11,497 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-08 21:19:11,499 INFO L435 NwaCegarLoop]: 1381 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 21:19:11,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1381 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 21:19:11,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2025-03-08 21:19:11,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1012. [2025-03-08 21:19:11,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1012 states, 994 states have (on average 1.4788732394366197) internal successors, (1470), 999 states have internal predecessors, (1470), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-08 21:19:11,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1012 states to 1012 states and 1497 transitions. [2025-03-08 21:19:11,576 INFO L78 Accepts]: Start accepts. Automaton has 1012 states and 1497 transitions. Word has length 13 [2025-03-08 21:19:11,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:19:11,576 INFO L471 AbstractCegarLoop]: Abstraction has 1012 states and 1497 transitions. [2025-03-08 21:19:11,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:19:11,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states and 1497 transitions. [2025-03-08 21:19:11,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-08 21:19:11,583 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:19:11,583 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:19:11,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 21:19:11,583 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:19:11,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:19:11,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1192121012, now seen corresponding path program 1 times [2025-03-08 21:19:11,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:19:11,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813391333] [2025-03-08 21:19:11,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:19:11,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:19:11,615 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-08 21:19:11,627 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-08 21:19:11,629 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:19:11,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:19:12,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:19:12,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:19:12,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813391333] [2025-03-08 21:19:12,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813391333] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:19:12,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:19:12,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 21:19:12,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406680376] [2025-03-08 21:19:12,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:19:12,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 21:19:12,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:19:12,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 21:19:12,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 21:19:12,038 INFO L87 Difference]: Start difference. First operand 1012 states and 1497 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:19:12,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:19:12,423 INFO L93 Difference]: Finished difference Result 2018 states and 2988 transitions. [2025-03-08 21:19:12,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 21:19:12,423 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2025-03-08 21:19:12,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:19:12,433 INFO L225 Difference]: With dead ends: 2018 [2025-03-08 21:19:12,433 INFO L226 Difference]: Without dead ends: 1392 [2025-03-08 21:19:12,434 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 21:19:12,435 INFO L435 NwaCegarLoop]: 1373 mSDtfsCounter, 542 mSDsluCounter, 2680 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 4053 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 21:19:12,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 4053 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 21:19:12,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2025-03-08 21:19:12,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 1014. [2025-03-08 21:19:12,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1014 states, 996 states have (on average 1.4779116465863453) internal successors, (1472), 1001 states have internal predecessors, (1472), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-08 21:19:12,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1499 transitions. [2025-03-08 21:19:12,470 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1499 transitions. Word has length 66 [2025-03-08 21:19:12,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:19:12,470 INFO L471 AbstractCegarLoop]: Abstraction has 1014 states and 1499 transitions. [2025-03-08 21:19:12,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:19:12,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1499 transitions. [2025-03-08 21:19:12,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-03-08 21:19:12,480 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:19:12,480 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:19:12,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 21:19:12,481 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:19:12,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:19:12,483 INFO L85 PathProgramCache]: Analyzing trace with hash 263222360, now seen corresponding path program 1 times [2025-03-08 21:19:12,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:19:12,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312886394] [2025-03-08 21:19:12,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:19:12,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:19:12,529 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 141 statements into 1 equivalence classes. [2025-03-08 21:19:12,542 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 141 of 141 statements. [2025-03-08 21:19:12,542 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:19:12,542 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:19:13,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:19:13,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:19:13,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312886394] [2025-03-08 21:19:13,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312886394] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:19:13,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:19:13,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 21:19:13,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022970806] [2025-03-08 21:19:13,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:19:13,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 21:19:13,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:19:13,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 21:19:13,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-08 21:19:13,014 INFO L87 Difference]: Start difference. First operand 1014 states and 1499 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:19:13,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:19:13,455 INFO L93 Difference]: Finished difference Result 2402 states and 3547 transitions. [2025-03-08 21:19:13,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 21:19:13,455 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2025-03-08 21:19:13,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:19:13,460 INFO L225 Difference]: With dead ends: 2402 [2025-03-08 21:19:13,460 INFO L226 Difference]: Without dead ends: 1392 [2025-03-08 21:19:13,462 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-08 21:19:13,462 INFO L435 NwaCegarLoop]: 1376 mSDtfsCounter, 1078 mSDsluCounter, 3987 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 5363 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 21:19:13,462 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1084 Valid, 5363 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 21:19:13,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2025-03-08 21:19:13,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 1017. [2025-03-08 21:19:13,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 999 states have (on average 1.4764764764764764) internal successors, (1475), 1004 states have internal predecessors, (1475), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-08 21:19:13,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1502 transitions. [2025-03-08 21:19:13,485 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1502 transitions. Word has length 141 [2025-03-08 21:19:13,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:19:13,485 INFO L471 AbstractCegarLoop]: Abstraction has 1017 states and 1502 transitions. [2025-03-08 21:19:13,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:19:13,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1502 transitions. [2025-03-08 21:19:13,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2025-03-08 21:19:13,488 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:19:13,488 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:19:13,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 21:19:13,489 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:19:13,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:19:13,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1606050077, now seen corresponding path program 1 times [2025-03-08 21:19:13,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:19:13,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229751405] [2025-03-08 21:19:13,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:19:13,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:19:13,554 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 210 statements into 1 equivalence classes. [2025-03-08 21:19:13,562 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 210 of 210 statements. [2025-03-08 21:19:13,563 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:19:13,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:19:13,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:19:13,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:19:13,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229751405] [2025-03-08 21:19:13,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229751405] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:19:13,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:19:13,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 21:19:13,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451868330] [2025-03-08 21:19:13,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:19:13,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 21:19:13,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:19:13,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 21:19:13,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 21:19:13,817 INFO L87 Difference]: Start difference. First operand 1017 states and 1502 transitions. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:19:14,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:19:14,061 INFO L93 Difference]: Finished difference Result 1985 states and 2931 transitions. [2025-03-08 21:19:14,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 21:19:14,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2025-03-08 21:19:14,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:19:14,065 INFO L225 Difference]: With dead ends: 1985 [2025-03-08 21:19:14,066 INFO L226 Difference]: Without dead ends: 975 [2025-03-08 21:19:14,067 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 21:19:14,068 INFO L435 NwaCegarLoop]: 1285 mSDtfsCounter, 30 mSDsluCounter, 2551 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3836 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 21:19:14,068 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3836 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 21:19:14,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2025-03-08 21:19:14,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 975. [2025-03-08 21:19:14,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 957 states have (on average 1.4608150470219436) internal successors, (1398), 962 states have internal predecessors, (1398), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2025-03-08 21:19:14,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1425 transitions. [2025-03-08 21:19:14,086 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1425 transitions. Word has length 210 [2025-03-08 21:19:14,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:19:14,086 INFO L471 AbstractCegarLoop]: Abstraction has 975 states and 1425 transitions. [2025-03-08 21:19:14,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:19:14,086 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1425 transitions. [2025-03-08 21:19:14,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2025-03-08 21:19:14,088 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:19:14,088 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:19:14,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 21:19:14,088 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:19:14,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:19:14,089 INFO L85 PathProgramCache]: Analyzing trace with hash 802950237, now seen corresponding path program 1 times [2025-03-08 21:19:14,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:19:14,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433746327] [2025-03-08 21:19:14,089 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:19:14,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:19:14,135 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 210 statements into 1 equivalence classes. [2025-03-08 21:19:14,150 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 210 of 210 statements. [2025-03-08 21:19:14,150 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:19:14,150 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:19:14,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:19:14,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:19:14,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433746327] [2025-03-08 21:19:14,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433746327] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:19:14,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:19:14,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 21:19:14,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419550688] [2025-03-08 21:19:14,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:19:14,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 21:19:14,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:19:14,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 21:19:14,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 21:19:14,264 INFO L87 Difference]: Start difference. First operand 975 states and 1425 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:19:14,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:19:14,511 INFO L93 Difference]: Finished difference Result 2466 states and 3618 transitions. [2025-03-08 21:19:14,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 21:19:14,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2025-03-08 21:19:14,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:19:14,517 INFO L225 Difference]: With dead ends: 2466 [2025-03-08 21:19:14,517 INFO L226 Difference]: Without dead ends: 1498 [2025-03-08 21:19:14,519 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 [2025-03-08 21:19:14,520 INFO L435 NwaCegarLoop]: 1301 mSDtfsCounter, 710 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 21:19:14,520 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 2584 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 21:19:14,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2025-03-08 21:19:14,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1341. [2025-03-08 21:19:14,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1341 states, 1321 states have (on average 1.4640423921271764) internal successors, (1934), 1326 states have internal predecessors, (1934), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 21:19:14,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1965 transitions. [2025-03-08 21:19:14,588 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1965 transitions. Word has length 210 [2025-03-08 21:19:14,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:19:14,589 INFO L471 AbstractCegarLoop]: Abstraction has 1341 states and 1965 transitions. [2025-03-08 21:19:14,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 21:19:14,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1965 transitions. [2025-03-08 21:19:14,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2025-03-08 21:19:14,593 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:19:14,593 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:19:14,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 21:19:14,593 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:19:14,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:19:14,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1093092449, now seen corresponding path program 1 times [2025-03-08 21:19:14,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:19:14,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854900574] [2025-03-08 21:19:14,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:19:14,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:19:14,662 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 225 statements into 1 equivalence classes. [2025-03-08 21:19:14,695 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 225 of 225 statements. [2025-03-08 21:19:14,695 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:19:14,695 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:19:14,955 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 21:19:14,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:19:14,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854900574] [2025-03-08 21:19:14,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854900574] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:19:14,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:19:14,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 21:19:14,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635368934] [2025-03-08 21:19:14,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:19:14,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 21:19:14,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:19:14,958 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 21:19:14,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 21:19:14,958 INFO L87 Difference]: Start difference. First operand 1341 states and 1965 transitions. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:19:15,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:19:15,197 INFO L93 Difference]: Finished difference Result 2550 states and 3743 transitions. [2025-03-08 21:19:15,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 21:19:15,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 225 [2025-03-08 21:19:15,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:19:15,202 INFO L225 Difference]: With dead ends: 2550 [2025-03-08 21:19:15,203 INFO L226 Difference]: Without dead ends: 1299 [2025-03-08 21:19:15,204 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 21:19:15,205 INFO L435 NwaCegarLoop]: 1211 mSDtfsCounter, 30 mSDsluCounter, 2403 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3614 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 21:19:15,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3614 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 21:19:15,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2025-03-08 21:19:15,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 1299. [2025-03-08 21:19:15,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1299 states, 1279 states have (on average 1.4519155590304926) internal successors, (1857), 1284 states have internal predecessors, (1857), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2025-03-08 21:19:15,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1888 transitions. [2025-03-08 21:19:15,230 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1888 transitions. Word has length 225 [2025-03-08 21:19:15,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:19:15,231 INFO L471 AbstractCegarLoop]: Abstraction has 1299 states and 1888 transitions. [2025-03-08 21:19:15,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:19:15,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1888 transitions. [2025-03-08 21:19:15,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2025-03-08 21:19:15,233 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:19:15,233 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:19:15,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 21:19:15,233 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:19:15,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:19:15,234 INFO L85 PathProgramCache]: Analyzing trace with hash -228767962, now seen corresponding path program 1 times [2025-03-08 21:19:15,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:19:15,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527160479] [2025-03-08 21:19:15,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:19:15,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:19:15,307 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 225 statements into 1 equivalence classes. [2025-03-08 21:19:15,344 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 225 of 225 statements. [2025-03-08 21:19:15,345 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:19:15,345 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:19:15,496 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-08 21:19:15,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:19:15,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527160479] [2025-03-08 21:19:15,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527160479] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:19:15,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:19:15,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 21:19:15,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582660394] [2025-03-08 21:19:15,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:19:15,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 21:19:15,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:19:15,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 21:19:15,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 21:19:15,500 INFO L87 Difference]: Start difference. First operand 1299 states and 1888 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:19:15,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:19:15,730 INFO L93 Difference]: Finished difference Result 3070 states and 4480 transitions. [2025-03-08 21:19:15,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 21:19:15,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 225 [2025-03-08 21:19:15,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:19:15,737 INFO L225 Difference]: With dead ends: 3070 [2025-03-08 21:19:15,737 INFO L226 Difference]: Without dead ends: 1861 [2025-03-08 21:19:15,739 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 [2025-03-08 21:19:15,739 INFO L435 NwaCegarLoop]: 1431 mSDtfsCounter, 591 mSDsluCounter, 1209 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 2640 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 21:19:15,740 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 2640 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 21:19:15,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2025-03-08 21:19:15,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1856. [2025-03-08 21:19:15,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1830 states have (on average 1.4551912568306011) internal successors, (2663), 1835 states have internal predecessors, (2663), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2025-03-08 21:19:15,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 2706 transitions. [2025-03-08 21:19:15,777 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 2706 transitions. Word has length 225 [2025-03-08 21:19:15,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:19:15,778 INFO L471 AbstractCegarLoop]: Abstraction has 1856 states and 2706 transitions. [2025-03-08 21:19:15,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-08 21:19:15,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 2706 transitions. [2025-03-08 21:19:15,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2025-03-08 21:19:15,780 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:19:15,780 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:19:15,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 21:19:15,781 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:19:15,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:19:15,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1401249167, now seen corresponding path program 1 times [2025-03-08 21:19:15,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:19:15,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334126098] [2025-03-08 21:19:15,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:19:15,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:19:15,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 240 statements into 1 equivalence classes. [2025-03-08 21:19:15,865 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 240 of 240 statements. [2025-03-08 21:19:15,865 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:19:15,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:19:16,068 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 21:19:16,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:19:16,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334126098] [2025-03-08 21:19:16,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334126098] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:19:16,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:19:16,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 21:19:16,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322803281] [2025-03-08 21:19:16,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:19:16,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 21:19:16,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:19:16,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 21:19:16,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 21:19:16,070 INFO L87 Difference]: Start difference. First operand 1856 states and 2706 transitions. Second operand has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-08 21:19:16,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:19:16,493 INFO L93 Difference]: Finished difference Result 3056 states and 4462 transitions. [2025-03-08 21:19:16,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 21:19:16,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 240 [2025-03-08 21:19:16,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:19:16,499 INFO L225 Difference]: With dead ends: 3056 [2025-03-08 21:19:16,499 INFO L226 Difference]: Without dead ends: 1433 [2025-03-08 21:19:16,501 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 21:19:16,501 INFO L435 NwaCegarLoop]: 1256 mSDtfsCounter, 2348 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2348 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 21:19:16,502 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2348 Valid, 1438 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 21:19:16,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2025-03-08 21:19:16,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1433. [2025-03-08 21:19:16,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 1412 states have (on average 1.4405099150141643) internal successors, (2034), 1417 states have internal predecessors, (2034), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-08 21:19:16,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 2067 transitions. [2025-03-08 21:19:16,531 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 2067 transitions. Word has length 240 [2025-03-08 21:19:16,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:19:16,531 INFO L471 AbstractCegarLoop]: Abstraction has 1433 states and 2067 transitions. [2025-03-08 21:19:16,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-08 21:19:16,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 2067 transitions. [2025-03-08 21:19:16,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2025-03-08 21:19:16,534 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:19:16,534 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:19:16,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 21:19:16,534 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:19:16,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:19:16,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1355841855, now seen corresponding path program 1 times [2025-03-08 21:19:16,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:19:16,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79769382] [2025-03-08 21:19:16,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:19:16,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:19:16,588 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 250 statements into 1 equivalence classes. [2025-03-08 21:19:16,618 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 250 of 250 statements. [2025-03-08 21:19:16,619 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:19:16,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:19:16,795 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-08 21:19:16,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:19:16,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79769382] [2025-03-08 21:19:16,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79769382] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:19:16,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:19:16,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 21:19:16,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670650257] [2025-03-08 21:19:16,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:19:16,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 21:19:16,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:19:16,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 21:19:16,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 21:19:16,798 INFO L87 Difference]: Start difference. First operand 1433 states and 2067 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-08 21:19:17,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:19:17,000 INFO L93 Difference]: Finished difference Result 2307 states and 3370 transitions. [2025-03-08 21:19:17,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 21:19:17,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 250 [2025-03-08 21:19:17,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:19:17,006 INFO L225 Difference]: With dead ends: 2307 [2025-03-08 21:19:17,006 INFO L226 Difference]: Without dead ends: 1453 [2025-03-08 21:19:17,007 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 21:19:17,008 INFO L435 NwaCegarLoop]: 1207 mSDtfsCounter, 8 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2399 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 21:19:17,008 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2399 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 21:19:17,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2025-03-08 21:19:17,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1453. [2025-03-08 21:19:17,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 1432 states have (on average 1.4343575418994414) internal successors, (2054), 1437 states have internal predecessors, (2054), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-08 21:19:17,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 2087 transitions. [2025-03-08 21:19:17,036 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 2087 transitions. Word has length 250 [2025-03-08 21:19:17,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:19:17,037 INFO L471 AbstractCegarLoop]: Abstraction has 1453 states and 2087 transitions. [2025-03-08 21:19:17,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-08 21:19:17,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 2087 transitions. [2025-03-08 21:19:17,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2025-03-08 21:19:17,039 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:19:17,039 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:19:17,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 21:19:17,040 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:19:17,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:19:17,040 INFO L85 PathProgramCache]: Analyzing trace with hash 818838242, now seen corresponding path program 1 times [2025-03-08 21:19:17,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:19:17,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333665693] [2025-03-08 21:19:17,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:19:17,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:19:17,098 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 250 statements into 1 equivalence classes. [2025-03-08 21:19:17,124 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 250 of 250 statements. [2025-03-08 21:19:17,124 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:19:17,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:19:17,336 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-03-08 21:19:17,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:19:17,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333665693] [2025-03-08 21:19:17,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333665693] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:19:17,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:19:17,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 21:19:17,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696720295] [2025-03-08 21:19:17,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:19:17,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 21:19:17,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:19:17,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 21:19:17,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 21:19:17,338 INFO L87 Difference]: Start difference. First operand 1453 states and 2087 transitions. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-08 21:19:17,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:19:17,567 INFO L93 Difference]: Finished difference Result 2317 states and 3373 transitions. [2025-03-08 21:19:17,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 21:19:17,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 250 [2025-03-08 21:19:17,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:19:17,573 INFO L225 Difference]: With dead ends: 2317 [2025-03-08 21:19:17,573 INFO L226 Difference]: Without dead ends: 1391 [2025-03-08 21:19:17,575 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-08 21:19:17,575 INFO L435 NwaCegarLoop]: 1132 mSDtfsCounter, 32 mSDsluCounter, 2250 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 3382 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 21:19:17,576 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 3382 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 21:19:17,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2025-03-08 21:19:17,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1391. [2025-03-08 21:19:17,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1370 states have (on average 1.4262773722627737) internal successors, (1954), 1375 states have internal predecessors, (1954), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-08 21:19:17,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 1987 transitions. [2025-03-08 21:19:17,611 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 1987 transitions. Word has length 250 [2025-03-08 21:19:17,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:19:17,612 INFO L471 AbstractCegarLoop]: Abstraction has 1391 states and 1987 transitions. [2025-03-08 21:19:17,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-08 21:19:17,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 1987 transitions. [2025-03-08 21:19:17,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2025-03-08 21:19:17,615 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:19:17,615 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:19:17,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 21:19:17,615 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:19:17,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:19:17,616 INFO L85 PathProgramCache]: Analyzing trace with hash -567105477, now seen corresponding path program 1 times [2025-03-08 21:19:17,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:19:17,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129538992] [2025-03-08 21:19:17,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:19:17,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:19:17,690 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 250 statements into 1 equivalence classes. [2025-03-08 21:19:17,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 250 of 250 statements. [2025-03-08 21:19:17,754 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:19:17,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:19:18,323 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 21:19:18,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:19:18,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129538992] [2025-03-08 21:19:18,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129538992] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 21:19:18,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884295830] [2025-03-08 21:19:18,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:19:18,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 21:19:18,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 21:19:18,326 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 21:19:18,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 21:19:18,631 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 250 statements into 1 equivalence classes. [2025-03-08 21:19:18,763 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 250 of 250 statements. [2025-03-08 21:19:18,763 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:19:18,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:19:18,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-08 21:19:18,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 21:19:19,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-03-08 21:19:19,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-08 21:19:19,215 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 21:19:19,216 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 21:19:19,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884295830] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:19:19,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 21:19:19,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2025-03-08 21:19:19,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625429102] [2025-03-08 21:19:19,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:19:19,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 21:19:19,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:19:19,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 21:19:19,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2025-03-08 21:19:19,218 INFO L87 Difference]: Start difference. First operand 1391 states and 1987 transitions. Second operand has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-08 21:19:23,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-08 21:19:27,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-08 21:19:31,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-08 21:19:31,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:19:31,802 INFO L93 Difference]: Finished difference Result 2577 states and 3696 transitions. [2025-03-08 21:19:31,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 21:19:31,805 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 250 [2025-03-08 21:19:31,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:19:31,811 INFO L225 Difference]: With dead ends: 2577 [2025-03-08 21:19:31,812 INFO L226 Difference]: Without dead ends: 1710 [2025-03-08 21:19:31,813 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 239 SyntacticMatches, 7 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2025-03-08 21:19:31,814 INFO L435 NwaCegarLoop]: 1093 mSDtfsCounter, 1854 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1862 SdHoareTripleChecker+Valid, 4104 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2025-03-08 21:19:31,814 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1862 Valid, 4104 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 637 Invalid, 3 Unknown, 0 Unchecked, 12.5s Time] [2025-03-08 21:19:31,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1710 states. [2025-03-08 21:19:31,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1710 to 1559. [2025-03-08 21:19:31,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1559 states, 1528 states have (on average 1.418193717277487) internal successors, (2167), 1537 states have internal predecessors, (2167), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (23), 17 states have call predecessors, (23), 23 states have call successors, (23) [2025-03-08 21:19:31,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1559 states to 1559 states and 2214 transitions. [2025-03-08 21:19:31,850 INFO L78 Accepts]: Start accepts. Automaton has 1559 states and 2214 transitions. Word has length 250 [2025-03-08 21:19:31,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:19:31,850 INFO L471 AbstractCegarLoop]: Abstraction has 1559 states and 2214 transitions. [2025-03-08 21:19:31,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-08 21:19:31,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1559 states and 2214 transitions. [2025-03-08 21:19:31,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2025-03-08 21:19:31,854 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:19:31,854 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:19:31,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-08 21:19:32,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-08 21:19:32,059 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:19:32,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:19:32,060 INFO L85 PathProgramCache]: Analyzing trace with hash 2114348584, now seen corresponding path program 1 times [2025-03-08 21:19:32,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:19:32,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247501191] [2025-03-08 21:19:32,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:19:32,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:19:32,133 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 325 statements into 1 equivalence classes. [2025-03-08 21:19:32,198 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 325 of 325 statements. [2025-03-08 21:19:32,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:19:32,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:19:32,971 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 72 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 21:19:32,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:19:32,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247501191] [2025-03-08 21:19:32,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247501191] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 21:19:32,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577922518] [2025-03-08 21:19:32,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:19:32,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 21:19:32,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 21:19:32,974 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 21:19:32,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 21:19:33,320 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 325 statements into 1 equivalence classes. [2025-03-08 21:19:33,490 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 325 of 325 statements. [2025-03-08 21:19:33,490 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:19:33,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:19:33,499 INFO L256 TraceCheckSpWp]: Trace formula consists of 1632 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-08 21:19:33,506 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 21:19:33,517 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 15 treesize of output 1 [2025-03-08 21:19:33,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-03-08 21:19:33,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-08 21:19:33,868 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 72 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 21:19:33,874 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 21:19:34,115 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 72 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 21:19:34,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577922518] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 21:19:34,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 21:19:34,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 5] total 12 [2025-03-08 21:19:34,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472380016] [2025-03-08 21:19:34,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 21:19:34,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-08 21:19:34,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:19:34,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-08 21:19:34,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2025-03-08 21:19:34,118 INFO L87 Difference]: Start difference. First operand 1559 states and 2214 transitions. Second operand has 12 states, 12 states have (on average 39.5) internal successors, (474), 12 states have internal predecessors, (474), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-03-08 21:19:35,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:19:35,022 INFO L93 Difference]: Finished difference Result 3811 states and 5365 transitions. [2025-03-08 21:19:35,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-08 21:19:35,023 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 39.5) internal successors, (474), 12 states have internal predecessors, (474), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 325 [2025-03-08 21:19:35,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:19:35,031 INFO L225 Difference]: With dead ends: 3811 [2025-03-08 21:19:35,031 INFO L226 Difference]: Without dead ends: 2485 [2025-03-08 21:19:35,033 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 639 SyntacticMatches, 7 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2025-03-08 21:19:35,034 INFO L435 NwaCegarLoop]: 1121 mSDtfsCounter, 1908 mSDsluCounter, 8135 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1926 SdHoareTripleChecker+Valid, 9256 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-08 21:19:35,034 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1926 Valid, 9256 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-08 21:19:35,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2485 states. [2025-03-08 21:19:35,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2485 to 2203. [2025-03-08 21:19:35,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 2160 states have (on average 1.3939814814814815) internal successors, (3011), 2169 states have internal predecessors, (3011), 35 states have call successors, (35), 7 states have call predecessors, (35), 7 states have return successors, (34), 28 states have call predecessors, (34), 34 states have call successors, (34) [2025-03-08 21:19:35,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 3080 transitions. [2025-03-08 21:19:35,095 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 3080 transitions. Word has length 325 [2025-03-08 21:19:35,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:19:35,095 INFO L471 AbstractCegarLoop]: Abstraction has 2203 states and 3080 transitions. [2025-03-08 21:19:35,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 39.5) internal successors, (474), 12 states have internal predecessors, (474), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-03-08 21:19:35,095 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 3080 transitions. [2025-03-08 21:19:35,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 758 [2025-03-08 21:19:35,108 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:19:35,109 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:19:35,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-08 21:19:35,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-08 21:19:35,310 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:19:35,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:19:35,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1173150368, now seen corresponding path program 1 times [2025-03-08 21:19:35,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:19:35,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351305821] [2025-03-08 21:19:35,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:19:35,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:19:35,478 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 757 statements into 1 equivalence classes. [2025-03-08 21:19:35,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 757 of 757 statements. [2025-03-08 21:19:35,662 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:19:35,662 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:19:39,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1184 backedges. 288 proven. 872 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 21:19:39,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:19:39,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351305821] [2025-03-08 21:19:39,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351305821] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 21:19:39,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384396221] [2025-03-08 21:19:39,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:19:39,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 21:19:39,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 21:19:39,288 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 21:19:39,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 21:19:39,821 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 757 statements into 1 equivalence classes. [2025-03-08 21:19:40,187 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 757 of 757 statements. [2025-03-08 21:19:40,188 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:19:40,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:19:40,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 3726 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-08 21:19:40,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 21:19:40,221 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 15 treesize of output 1 [2025-03-08 21:19:40,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-03-08 21:19:40,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-03-08 21:19:40,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-03-08 21:19:41,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-03-08 21:19:41,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-08 21:19:41,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1184 backedges. 288 proven. 872 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 21:19:41,059 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 21:19:41,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1184 backedges. 288 proven. 872 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 21:19:41,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384396221] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 21:19:41,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 21:19:41,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 8] total 21 [2025-03-08 21:19:41,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407931601] [2025-03-08 21:19:41,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 21:19:41,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-08 21:19:41,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:19:41,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-08 21:19:41,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=271, Unknown=0, NotChecked=0, Total=420 [2025-03-08 21:19:41,674 INFO L87 Difference]: Start difference. First operand 2203 states and 3080 transitions. Second operand has 21 states, 21 states have (on average 64.0) internal successors, (1344), 21 states have internal predecessors, (1344), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-03-08 21:19:42,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:19:42,743 INFO L93 Difference]: Finished difference Result 5533 states and 7696 transitions. [2025-03-08 21:19:42,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-03-08 21:19:42,744 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 64.0) internal successors, (1344), 21 states have internal predecessors, (1344), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 757 [2025-03-08 21:19:42,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:19:42,756 INFO L225 Difference]: With dead ends: 5533 [2025-03-08 21:19:42,756 INFO L226 Difference]: Without dead ends: 4207 [2025-03-08 21:19:42,759 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1538 GetRequests, 1502 SyntacticMatches, 7 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=286, Invalid=644, Unknown=0, NotChecked=0, Total=930 [2025-03-08 21:19:42,759 INFO L435 NwaCegarLoop]: 1121 mSDtfsCounter, 4895 mSDsluCounter, 8830 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4937 SdHoareTripleChecker+Valid, 9951 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-08 21:19:42,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4937 Valid, 9951 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-08 21:19:42,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4207 states. [2025-03-08 21:19:42,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4207 to 3925. [2025-03-08 21:19:42,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3925 states, 3858 states have (on average 1.371435977190254) internal successors, (5291), 3867 states have internal predecessors, (5291), 59 states have call successors, (59), 7 states have call predecessors, (59), 7 states have return successors, (58), 52 states have call predecessors, (58), 58 states have call successors, (58) [2025-03-08 21:19:42,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3925 states to 3925 states and 5408 transitions. [2025-03-08 21:19:42,849 INFO L78 Accepts]: Start accepts. Automaton has 3925 states and 5408 transitions. Word has length 757 [2025-03-08 21:19:42,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:19:42,851 INFO L471 AbstractCegarLoop]: Abstraction has 3925 states and 5408 transitions. [2025-03-08 21:19:42,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 64.0) internal successors, (1344), 21 states have internal predecessors, (1344), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2025-03-08 21:19:42,851 INFO L276 IsEmpty]: Start isEmpty. Operand 3925 states and 5408 transitions. [2025-03-08 21:19:42,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1622 [2025-03-08 21:19:42,871 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:19:42,872 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:19:42,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-08 21:19:43,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 21:19:43,073 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:19:43,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:19:43,074 INFO L85 PathProgramCache]: Analyzing trace with hash 847524816, now seen corresponding path program 2 times [2025-03-08 21:19:43,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:19:43,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189783148] [2025-03-08 21:19:43,074 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 21:19:43,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:19:43,400 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 1621 statements into 2 equivalence classes. [2025-03-08 21:19:43,412 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 76 of 1621 statements. [2025-03-08 21:19:43,412 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 21:19:43,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:19:43,542 INFO L134 CoverageAnalysis]: Checked inductivity of 7238 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7238 trivial. 0 not checked. [2025-03-08 21:19:43,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:19:43,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189783148] [2025-03-08 21:19:43,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189783148] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:19:43,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:19:43,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 21:19:43,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669607904] [2025-03-08 21:19:43,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:19:43,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 21:19:43,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:19:43,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 21:19:43,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-08 21:19:43,545 INFO L87 Difference]: Start difference. First operand 3925 states and 5408 transitions. Second operand has 8 states, 8 states have (on average 29.625) internal successors, (237), 8 states have internal predecessors, (237), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-08 21:19:44,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:19:44,381 INFO L93 Difference]: Finished difference Result 4782 states and 6685 transitions. [2025-03-08 21:19:44,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 21:19:44,382 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 29.625) internal successors, (237), 8 states have internal predecessors, (237), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1621 [2025-03-08 21:19:44,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:19:44,392 INFO L225 Difference]: With dead ends: 4782 [2025-03-08 21:19:44,392 INFO L226 Difference]: Without dead ends: 3936 [2025-03-08 21:19:44,394 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2025-03-08 21:19:44,395 INFO L435 NwaCegarLoop]: 1138 mSDtfsCounter, 45 mSDsluCounter, 5369 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 6507 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-08 21:19:44,395 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 6507 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-08 21:19:44,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3936 states. [2025-03-08 21:19:44,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3936 to 3932. [2025-03-08 21:19:44,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3932 states, 3865 states have (on average 1.3707632600258732) internal successors, (5298), 3874 states have internal predecessors, (5298), 59 states have call successors, (59), 7 states have call predecessors, (59), 7 states have return successors, (58), 52 states have call predecessors, (58), 58 states have call successors, (58) [2025-03-08 21:19:44,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3932 states to 3932 states and 5415 transitions. [2025-03-08 21:19:44,467 INFO L78 Accepts]: Start accepts. Automaton has 3932 states and 5415 transitions. Word has length 1621 [2025-03-08 21:19:44,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:19:44,469 INFO L471 AbstractCegarLoop]: Abstraction has 3932 states and 5415 transitions. [2025-03-08 21:19:44,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 29.625) internal successors, (237), 8 states have internal predecessors, (237), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-08 21:19:44,469 INFO L276 IsEmpty]: Start isEmpty. Operand 3932 states and 5415 transitions. [2025-03-08 21:19:44,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1623 [2025-03-08 21:19:44,484 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:19:44,484 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:19:44,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-08 21:19:44,485 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:19:44,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:19:44,486 INFO L85 PathProgramCache]: Analyzing trace with hash 171661696, now seen corresponding path program 1 times [2025-03-08 21:19:44,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:19:44,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382821356] [2025-03-08 21:19:44,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:19:44,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:19:44,859 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1622 statements into 1 equivalence classes. [2025-03-08 21:19:45,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1622 of 1622 statements. [2025-03-08 21:19:45,661 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:19:45,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:19:49,016 INFO L134 CoverageAnalysis]: Checked inductivity of 7238 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7238 trivial. 0 not checked. [2025-03-08 21:19:49,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:19:49,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382821356] [2025-03-08 21:19:49,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382821356] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:19:49,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:19:49,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 21:19:49,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922868644] [2025-03-08 21:19:49,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:19:49,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 21:19:49,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:19:49,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 21:19:49,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-08 21:19:49,019 INFO L87 Difference]: Start difference. First operand 3932 states and 5415 transitions. Second operand has 7 states, 7 states have (on average 34.0) internal successors, (238), 7 states have internal predecessors, (238), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-08 21:19:49,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:19:49,565 INFO L93 Difference]: Finished difference Result 4782 states and 6680 transitions. [2025-03-08 21:19:49,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 21:19:49,566 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 34.0) internal successors, (238), 7 states have internal predecessors, (238), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1622 [2025-03-08 21:19:49,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:19:49,594 INFO L225 Difference]: With dead ends: 4782 [2025-03-08 21:19:49,594 INFO L226 Difference]: Without dead ends: 3937 [2025-03-08 21:19:49,596 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-08 21:19:49,596 INFO L435 NwaCegarLoop]: 1144 mSDtfsCounter, 17 mSDsluCounter, 5354 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 6498 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 21:19:49,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 6498 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 21:19:49,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3937 states. [2025-03-08 21:19:49,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3937 to 3936. [2025-03-08 21:19:49,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3936 states, 3869 states have (on average 1.3706384078573275) internal successors, (5303), 3878 states have internal predecessors, (5303), 59 states have call successors, (59), 7 states have call predecessors, (59), 7 states have return successors, (58), 52 states have call predecessors, (58), 58 states have call successors, (58) [2025-03-08 21:19:49,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3936 states to 3936 states and 5420 transitions. [2025-03-08 21:19:49,689 INFO L78 Accepts]: Start accepts. Automaton has 3936 states and 5420 transitions. Word has length 1622 [2025-03-08 21:19:49,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:19:49,691 INFO L471 AbstractCegarLoop]: Abstraction has 3936 states and 5420 transitions. [2025-03-08 21:19:49,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.0) internal successors, (238), 7 states have internal predecessors, (238), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-08 21:19:49,691 INFO L276 IsEmpty]: Start isEmpty. Operand 3936 states and 5420 transitions. [2025-03-08 21:19:49,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1623 [2025-03-08 21:19:49,706 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:19:49,707 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:19:49,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-08 21:19:49,707 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:19:49,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:19:49,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1543888199, now seen corresponding path program 1 times [2025-03-08 21:19:49,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:19:49,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689681236] [2025-03-08 21:19:49,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:19:49,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:19:50,056 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1622 statements into 1 equivalence classes. [2025-03-08 21:19:50,607 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1622 of 1622 statements. [2025-03-08 21:19:50,607 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:19:50,608 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:19:53,462 INFO L134 CoverageAnalysis]: Checked inductivity of 7238 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7238 trivial. 0 not checked. [2025-03-08 21:19:53,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:19:53,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689681236] [2025-03-08 21:19:53,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689681236] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:19:53,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:19:53,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 21:19:53,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260697870] [2025-03-08 21:19:53,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:19:53,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 21:19:53,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:19:53,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 21:19:53,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-08 21:19:53,465 INFO L87 Difference]: Start difference. First operand 3936 states and 5420 transitions. Second operand has 8 states, 8 states have (on average 29.75) internal successors, (238), 8 states have internal predecessors, (238), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-08 21:19:53,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:19:53,881 INFO L93 Difference]: Finished difference Result 4780 states and 6676 transitions. [2025-03-08 21:19:53,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 21:19:53,882 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 29.75) internal successors, (238), 8 states have internal predecessors, (238), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1622 [2025-03-08 21:19:53,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:19:53,890 INFO L225 Difference]: With dead ends: 4780 [2025-03-08 21:19:53,890 INFO L226 Difference]: Without dead ends: 3944 [2025-03-08 21:19:53,892 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-08 21:19:53,892 INFO L435 NwaCegarLoop]: 1138 mSDtfsCounter, 25 mSDsluCounter, 5399 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 6537 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-08 21:19:53,892 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 6537 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-08 21:19:53,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3944 states. [2025-03-08 21:19:53,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3944 to 3936. [2025-03-08 21:19:53,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3936 states, 3869 states have (on average 1.3706384078573275) internal successors, (5303), 3878 states have internal predecessors, (5303), 59 states have call successors, (59), 7 states have call predecessors, (59), 7 states have return successors, (58), 52 states have call predecessors, (58), 58 states have call successors, (58) [2025-03-08 21:19:53,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3936 states to 3936 states and 5420 transitions. [2025-03-08 21:19:53,947 INFO L78 Accepts]: Start accepts. Automaton has 3936 states and 5420 transitions. Word has length 1622 [2025-03-08 21:19:53,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:19:53,948 INFO L471 AbstractCegarLoop]: Abstraction has 3936 states and 5420 transitions. [2025-03-08 21:19:53,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 29.75) internal successors, (238), 8 states have internal predecessors, (238), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-08 21:19:53,948 INFO L276 IsEmpty]: Start isEmpty. Operand 3936 states and 5420 transitions. [2025-03-08 21:19:53,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1624 [2025-03-08 21:19:53,962 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:19:53,963 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:19:53,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-08 21:19:53,963 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:19:53,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:19:53,964 INFO L85 PathProgramCache]: Analyzing trace with hash -947697737, now seen corresponding path program 1 times [2025-03-08 21:19:53,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:19:53,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368419430] [2025-03-08 21:19:53,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:19:53,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:19:54,276 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1623 statements into 1 equivalence classes. [2025-03-08 21:19:54,769 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1623 of 1623 statements. [2025-03-08 21:19:54,769 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:19:54,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:19:58,797 INFO L134 CoverageAnalysis]: Checked inductivity of 7238 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7238 trivial. 0 not checked. [2025-03-08 21:19:58,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:19:58,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368419430] [2025-03-08 21:19:58,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368419430] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:19:58,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:19:58,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-08 21:19:58,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247459624] [2025-03-08 21:19:58,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:19:58,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 21:19:58,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:19:58,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 21:19:58,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-03-08 21:19:58,800 INFO L87 Difference]: Start difference. First operand 3936 states and 5420 transitions. Second operand has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-08 21:19:59,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:19:59,474 INFO L93 Difference]: Finished difference Result 4788 states and 6687 transitions. [2025-03-08 21:19:59,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 21:19:59,474 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1623 [2025-03-08 21:19:59,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:19:59,484 INFO L225 Difference]: With dead ends: 4788 [2025-03-08 21:19:59,484 INFO L226 Difference]: Without dead ends: 3947 [2025-03-08 21:19:59,486 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-03-08 21:19:59,486 INFO L435 NwaCegarLoop]: 1141 mSDtfsCounter, 31 mSDsluCounter, 7617 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 8758 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 21:19:59,486 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 8758 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1244 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 21:19:59,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3947 states. [2025-03-08 21:19:59,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3947 to 3944. [2025-03-08 21:19:59,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3944 states, 3877 states have (on average 1.3703894763992779) internal successors, (5313), 3886 states have internal predecessors, (5313), 59 states have call successors, (59), 7 states have call predecessors, (59), 7 states have return successors, (58), 52 states have call predecessors, (58), 58 states have call successors, (58) [2025-03-08 21:19:59,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3944 states to 3944 states and 5430 transitions. [2025-03-08 21:19:59,559 INFO L78 Accepts]: Start accepts. Automaton has 3944 states and 5430 transitions. Word has length 1623 [2025-03-08 21:19:59,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:19:59,560 INFO L471 AbstractCegarLoop]: Abstraction has 3944 states and 5430 transitions. [2025-03-08 21:19:59,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 26.555555555555557) internal successors, (239), 9 states have internal predecessors, (239), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-08 21:19:59,560 INFO L276 IsEmpty]: Start isEmpty. Operand 3944 states and 5430 transitions. [2025-03-08 21:19:59,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1625 [2025-03-08 21:19:59,574 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:19:59,574 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:19:59,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-08 21:19:59,575 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:19:59,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:19:59,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1593022883, now seen corresponding path program 1 times [2025-03-08 21:19:59,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:19:59,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295715411] [2025-03-08 21:19:59,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:19:59,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:19:59,921 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1624 statements into 1 equivalence classes. [2025-03-08 21:20:00,312 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1624 of 1624 statements. [2025-03-08 21:20:00,312 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:20:00,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:20:02,738 INFO L134 CoverageAnalysis]: Checked inductivity of 7238 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7238 trivial. 0 not checked. [2025-03-08 21:20:02,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:20:02,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295715411] [2025-03-08 21:20:02,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295715411] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:20:02,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:20:02,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 21:20:02,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111434052] [2025-03-08 21:20:02,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:20:02,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 21:20:02,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:20:02,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 21:20:02,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-08 21:20:02,740 INFO L87 Difference]: Start difference. First operand 3944 states and 5430 transitions. Second operand has 7 states, 7 states have (on average 34.285714285714285) internal successors, (240), 7 states have internal predecessors, (240), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-08 21:20:03,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:20:03,053 INFO L93 Difference]: Finished difference Result 4794 states and 6695 transitions. [2025-03-08 21:20:03,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 21:20:03,053 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 34.285714285714285) internal successors, (240), 7 states have internal predecessors, (240), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1624 [2025-03-08 21:20:03,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:20:03,060 INFO L225 Difference]: With dead ends: 4794 [2025-03-08 21:20:03,060 INFO L226 Difference]: Without dead ends: 3947 [2025-03-08 21:20:03,062 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-08 21:20:03,062 INFO L435 NwaCegarLoop]: 1147 mSDtfsCounter, 16 mSDsluCounter, 3260 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4407 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-08 21:20:03,062 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4407 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-08 21:20:03,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3947 states. [2025-03-08 21:20:03,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3947 to 3947. [2025-03-08 21:20:03,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3947 states, 3880 states have (on average 1.3701030927835052) internal successors, (5316), 3889 states have internal predecessors, (5316), 59 states have call successors, (59), 7 states have call predecessors, (59), 7 states have return successors, (58), 52 states have call predecessors, (58), 58 states have call successors, (58) [2025-03-08 21:20:03,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3947 states to 3947 states and 5433 transitions. [2025-03-08 21:20:03,111 INFO L78 Accepts]: Start accepts. Automaton has 3947 states and 5433 transitions. Word has length 1624 [2025-03-08 21:20:03,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:20:03,112 INFO L471 AbstractCegarLoop]: Abstraction has 3947 states and 5433 transitions. [2025-03-08 21:20:03,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.285714285714285) internal successors, (240), 7 states have internal predecessors, (240), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-08 21:20:03,112 INFO L276 IsEmpty]: Start isEmpty. Operand 3947 states and 5433 transitions. [2025-03-08 21:20:03,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1625 [2025-03-08 21:20:03,125 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:20:03,126 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:20:03,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-08 21:20:03,126 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:20:03,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:20:03,127 INFO L85 PathProgramCache]: Analyzing trace with hash -731106444, now seen corresponding path program 1 times [2025-03-08 21:20:03,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:20:03,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867308184] [2025-03-08 21:20:03,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:20:03,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:20:03,415 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1624 statements into 1 equivalence classes. [2025-03-08 21:20:03,787 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1624 of 1624 statements. [2025-03-08 21:20:03,788 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:20:03,788 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:20:07,946 INFO L134 CoverageAnalysis]: Checked inductivity of 7238 backedges. 1961 proven. 74 refuted. 0 times theorem prover too weak. 5203 trivial. 0 not checked. [2025-03-08 21:20:07,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:20:07,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867308184] [2025-03-08 21:20:07,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867308184] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 21:20:07,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353773098] [2025-03-08 21:20:07,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:20:07,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 21:20:07,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 21:20:07,950 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 21:20:07,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 21:20:09,137 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1624 statements into 1 equivalence classes. [2025-03-08 21:20:09,999 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1624 of 1624 statements. [2025-03-08 21:20:10,000 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:20:10,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:20:10,045 INFO L256 TraceCheckSpWp]: Trace formula consists of 7914 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-03-08 21:20:10,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 21:20:10,079 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 15 treesize of output 1 [2025-03-08 21:20:10,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-03-08 21:20:10,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-03-08 21:20:10,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-03-08 21:20:10,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-03-08 21:20:10,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-03-08 21:20:10,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-03-08 21:20:11,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-03-08 21:20:11,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-03-08 21:20:11,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-03-08 21:20:11,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-03-08 21:20:11,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-03-08 21:20:11,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-08 21:20:11,556 INFO L134 CoverageAnalysis]: Checked inductivity of 7238 backedges. 0 proven. 7214 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 21:20:11,556 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 21:20:12,926 INFO L134 CoverageAnalysis]: Checked inductivity of 7238 backedges. 0 proven. 7214 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 21:20:12,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353773098] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 21:20:12,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 21:20:12,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 15] total 32 [2025-03-08 21:20:12,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919239958] [2025-03-08 21:20:12,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 21:20:12,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-03-08 21:20:12,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:20:12,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-03-08 21:20:12,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=636, Unknown=0, NotChecked=0, Total=992 [2025-03-08 21:20:12,934 INFO L87 Difference]: Start difference. First operand 3947 states and 5433 transitions. Second operand has 32 states, 32 states have (on average 103.21875) internal successors, (3303), 32 states have internal predecessors, (3303), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2025-03-08 21:20:14,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:20:14,960 INFO L93 Difference]: Finished difference Result 6815 states and 9424 transitions. [2025-03-08 21:20:14,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2025-03-08 21:20:14,961 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 103.21875) internal successors, (3303), 32 states have internal predecessors, (3303), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 1624 [2025-03-08 21:20:14,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:20:14,976 INFO L225 Difference]: With dead ends: 6815 [2025-03-08 21:20:14,976 INFO L226 Difference]: Without dead ends: 5910 [2025-03-08 21:20:14,981 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3304 GetRequests, 3220 SyntacticMatches, 7 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1982 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1671, Invalid=4491, Unknown=0, NotChecked=0, Total=6162 [2025-03-08 21:20:14,981 INFO L435 NwaCegarLoop]: 1090 mSDtfsCounter, 15064 mSDsluCounter, 12576 mSDsCounter, 0 mSdLazyCounter, 1875 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15145 SdHoareTripleChecker+Valid, 13666 SdHoareTripleChecker+Invalid, 1959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-08 21:20:14,981 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15145 Valid, 13666 Invalid, 1959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1875 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-08 21:20:14,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5910 states. [2025-03-08 21:20:15,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5910 to 5910. [2025-03-08 21:20:15,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5910 states, 5804 states have (on average 1.359407305306685) internal successors, (7890), 5813 states have internal predecessors, (7890), 98 states have call successors, (98), 7 states have call predecessors, (98), 7 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-08 21:20:15,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5910 states to 5910 states and 8085 transitions. [2025-03-08 21:20:15,065 INFO L78 Accepts]: Start accepts. Automaton has 5910 states and 8085 transitions. Word has length 1624 [2025-03-08 21:20:15,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:20:15,066 INFO L471 AbstractCegarLoop]: Abstraction has 5910 states and 8085 transitions. [2025-03-08 21:20:15,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 103.21875) internal successors, (3303), 32 states have internal predecessors, (3303), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2025-03-08 21:20:15,067 INFO L276 IsEmpty]: Start isEmpty. Operand 5910 states and 8085 transitions. [2025-03-08 21:20:15,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2600 [2025-03-08 21:20:15,096 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:20:15,097 INFO L218 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 14, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:20:15,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-08 21:20:15,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 21:20:15,298 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:20:15,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:20:15,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1545347663, now seen corresponding path program 2 times [2025-03-08 21:20:15,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:20:15,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662629137] [2025-03-08 21:20:15,300 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 21:20:15,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:20:15,782 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 2599 statements into 2 equivalence classes. [2025-03-08 21:20:15,794 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 79 of 2599 statements. [2025-03-08 21:20:15,794 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 21:20:15,794 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:20:16,019 INFO L134 CoverageAnalysis]: Checked inductivity of 23813 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23813 trivial. 0 not checked. [2025-03-08 21:20:16,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:20:16,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662629137] [2025-03-08 21:20:16,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662629137] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:20:16,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:20:16,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 21:20:16,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263219687] [2025-03-08 21:20:16,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:20:16,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-08 21:20:16,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:20:16,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-08 21:20:16,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-08 21:20:16,021 INFO L87 Difference]: Start difference. First operand 5910 states and 8085 transitions. Second operand has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-08 21:20:16,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 21:20:16,573 INFO L93 Difference]: Finished difference Result 6748 states and 9332 transitions. [2025-03-08 21:20:16,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 21:20:16,573 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 2599 [2025-03-08 21:20:16,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 21:20:16,584 INFO L225 Difference]: With dead ends: 6748 [2025-03-08 21:20:16,584 INFO L226 Difference]: Without dead ends: 5898 [2025-03-08 21:20:16,587 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2025-03-08 21:20:16,587 INFO L435 NwaCegarLoop]: 1129 mSDtfsCounter, 405 mSDsluCounter, 4943 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 6072 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 21:20:16,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 6072 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 21:20:16,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5898 states. [2025-03-08 21:20:16,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5898 to 5895. [2025-03-08 21:20:16,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5895 states, 5789 states have (on average 1.3596476075315254) internal successors, (7871), 5798 states have internal predecessors, (7871), 98 states have call successors, (98), 7 states have call predecessors, (98), 7 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) [2025-03-08 21:20:16,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5895 states to 5895 states and 8066 transitions. [2025-03-08 21:20:16,662 INFO L78 Accepts]: Start accepts. Automaton has 5895 states and 8066 transitions. Word has length 2599 [2025-03-08 21:20:16,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 21:20:16,664 INFO L471 AbstractCegarLoop]: Abstraction has 5895 states and 8066 transitions. [2025-03-08 21:20:16,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.0) internal successors, (240), 8 states have internal predecessors, (240), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-08 21:20:16,664 INFO L276 IsEmpty]: Start isEmpty. Operand 5895 states and 8066 transitions. [2025-03-08 21:20:16,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2601 [2025-03-08 21:20:16,693 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 21:20:16,694 INFO L218 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 14, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:20:16,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-08 21:20:16,694 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 21:20:16,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:20:16,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1933519251, now seen corresponding path program 1 times [2025-03-08 21:20:16,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:20:16,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078393565] [2025-03-08 21:20:16,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:20:16,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:20:17,172 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2600 statements into 1 equivalence classes. [2025-03-08 21:20:18,479 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2600 of 2600 statements. [2025-03-08 21:20:18,480 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:20:18,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat