./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/n.c24.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.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/loops/n.c24.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 ff2f22c8c94593047c07aca289bcba7e507bc3ee948a7529dc94c8d7792bd95d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 22:12:33,992 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 22:12:34,051 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 22:12:34,054 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 22:12:34,055 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 22:12:34,068 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 22:12:34,069 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 22:12:34,069 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 22:12:34,069 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 22:12:34,070 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 22:12:34,070 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 22:12:34,070 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 22:12:34,073 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 22:12:34,074 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 22:12:34,074 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 22:12:34,074 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 22:12:34,074 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 22:12:34,075 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 22:12:34,075 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 22:12:34,075 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 22:12:34,075 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 22:12:34,076 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 22:12:34,077 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 22:12:34,077 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 22:12:34,077 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 22:12:34,077 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 22:12:34,077 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 22:12:34,077 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 22:12:34,078 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 22:12:34,078 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 22:12:34,078 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 22:12:34,078 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 22:12:34,078 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:12:34,078 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 22:12:34,079 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 22:12:34,079 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 22:12:34,079 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 22:12:34,079 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 22:12:34,079 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 22:12:34,079 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 22:12:34,080 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 22:12:34,083 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 22:12:34,083 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff2f22c8c94593047c07aca289bcba7e507bc3ee948a7529dc94c8d7792bd95d [2024-11-09 22:12:34,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 22:12:34,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 22:12:34,330 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 22:12:34,330 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 22:12:34,331 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 22:12:34,331 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/n.c24.i [2024-11-09 22:12:35,556 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 22:12:35,750 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 22:12:35,751 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/n.c24.i [2024-11-09 22:12:35,760 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35d9567d4/d042a63beecb4133a03e24d68489fc7c/FLAG39e0929e4 [2024-11-09 22:12:36,133 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35d9567d4/d042a63beecb4133a03e24d68489fc7c [2024-11-09 22:12:36,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 22:12:36,136 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 22:12:36,137 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 22:12:36,137 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 22:12:36,140 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 22:12:36,141 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:12:36" (1/1) ... [2024-11-09 22:12:36,142 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19f7be68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:12:36, skipping insertion in model container [2024-11-09 22:12:36,142 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:12:36" (1/1) ... [2024-11-09 22:12:36,158 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 22:12:36,341 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/loops/n.c24.i[805,818] [2024-11-09 22:12:36,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:12:36,406 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 22:12:36,416 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/loops/n.c24.i[805,818] [2024-11-09 22:12:36,429 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 22:12:36,448 INFO L204 MainTranslator]: Completed translation [2024-11-09 22:12:36,448 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:12:36 WrapperNode [2024-11-09 22:12:36,449 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 22:12:36,450 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 22:12:36,450 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 22:12:36,450 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 22:12:36,455 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:12:36" (1/1) ... [2024-11-09 22:12:36,463 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:12:36" (1/1) ... [2024-11-09 22:12:36,482 INFO L138 Inliner]: procedures = 68, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 157 [2024-11-09 22:12:36,482 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 22:12:36,483 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 22:12:36,483 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 22:12:36,483 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 22:12:36,492 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:12:36" (1/1) ... [2024-11-09 22:12:36,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:12:36" (1/1) ... [2024-11-09 22:12:36,494 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:12:36" (1/1) ... [2024-11-09 22:12:36,505 INFO L175 MemorySlicer]: Split 21 memory accesses to 4 slices as follows [2, 8, 2, 9]. 43 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0, 0]. The 6 writes are split as follows [0, 0, 1, 5]. [2024-11-09 22:12:36,505 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:12:36" (1/1) ... [2024-11-09 22:12:36,506 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:12:36" (1/1) ... [2024-11-09 22:12:36,511 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:12:36" (1/1) ... [2024-11-09 22:12:36,511 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:12:36" (1/1) ... [2024-11-09 22:12:36,512 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:12:36" (1/1) ... [2024-11-09 22:12:36,513 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:12:36" (1/1) ... [2024-11-09 22:12:36,515 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 22:12:36,516 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 22:12:36,516 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 22:12:36,516 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 22:12:36,516 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:12:36" (1/1) ... [2024-11-09 22:12:36,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 22:12:36,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:12:36,543 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) [2024-11-09 22:12:36,546 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 [2024-11-09 22:12:36,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 22:12:36,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-09 22:12:36,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-09 22:12:36,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-09 22:12:36,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-09 22:12:36,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 22:12:36,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 22:12:36,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 22:12:36,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 22:12:36,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 22:12:36,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 22:12:36,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 22:12:36,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 22:12:36,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 22:12:36,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 22:12:36,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 22:12:36,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 22:12:36,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 22:12:36,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 22:12:36,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#0 [2024-11-09 22:12:36,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#1 [2024-11-09 22:12:36,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#2 [2024-11-09 22:12:36,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#3 [2024-11-09 22:12:36,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 22:12:36,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 22:12:36,661 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 22:12:36,662 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 22:12:36,833 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L147: havoc foo_#t~mem3#1; [2024-11-09 22:12:36,833 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L143: havoc bar_#t~nondet1#1; [2024-11-09 22:12:36,834 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L150: call ULTIMATE.dealloc(main_~#tel_data~0#1.base, main_~#tel_data~0#1.offset);havoc main_~#tel_data~0#1.base, main_~#tel_data~0#1.offset;call ULTIMATE.dealloc(main_~#x~0#1.base, main_~#x~0#1.offset);havoc main_~#x~0#1.base, main_~#x~0#1.offset; [2024-11-09 22:12:36,844 INFO L? ?]: Removed 39 outVars from TransFormulas that were not future-live. [2024-11-09 22:12:36,845 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 22:12:36,861 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 22:12:36,861 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 22:12:36,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:12:36 BoogieIcfgContainer [2024-11-09 22:12:36,862 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 22:12:36,863 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 22:12:36,863 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 22:12:36,866 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 22:12:36,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:12:36" (1/3) ... [2024-11-09 22:12:36,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270492c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:12:36, skipping insertion in model container [2024-11-09 22:12:36,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:12:36" (2/3) ... [2024-11-09 22:12:36,867 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270492c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:12:36, skipping insertion in model container [2024-11-09 22:12:36,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 10:12:36" (3/3) ... [2024-11-09 22:12:36,868 INFO L112 eAbstractionObserver]: Analyzing ICFG n.c24.i [2024-11-09 22:12:36,880 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 22:12:36,880 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 22:12:36,919 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 22:12:36,927 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;@3f7db69f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 22:12:36,927 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 22:12:36,934 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 39 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:12:36,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 22:12:36,938 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:12:36,938 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:12:36,939 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:12:36,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:12:36,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1920601555, now seen corresponding path program 1 times [2024-11-09 22:12:36,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:12:36,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534989504] [2024-11-09 22:12:36,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:12:36,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:12:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:12:37,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:12:37,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:12:37,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534989504] [2024-11-09 22:12:37,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534989504] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:12:37,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:12:37,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 22:12:37,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10800497] [2024-11-09 22:12:37,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:12:37,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 22:12:37,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:12:37,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 22:12:37,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 22:12:37,085 INFO L87 Difference]: Start difference. First operand has 40 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 39 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:12:37,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:12:37,097 INFO L93 Difference]: Finished difference Result 75 states and 111 transitions. [2024-11-09 22:12:37,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 22:12:37,100 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-09 22:12:37,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:12:37,106 INFO L225 Difference]: With dead ends: 75 [2024-11-09 22:12:37,106 INFO L226 Difference]: Without dead ends: 35 [2024-11-09 22:12:37,108 INFO L431 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 [2024-11-09 22:12:37,110 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:12:37,111 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:12:37,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-09 22:12:37,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-09 22:12:37,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 34 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:12:37,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2024-11-09 22:12:37,184 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 9 [2024-11-09 22:12:37,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:12:37,184 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2024-11-09 22:12:37,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:12:37,185 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2024-11-09 22:12:37,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 22:12:37,185 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:12:37,185 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:12:37,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 22:12:37,185 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:12:37,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:12:37,190 INFO L85 PathProgramCache]: Analyzing trace with hash 559920840, now seen corresponding path program 1 times [2024-11-09 22:12:37,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:12:37,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558690896] [2024-11-09 22:12:37,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:12:37,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:12:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:12:37,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 22:12:37,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:12:37,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558690896] [2024-11-09 22:12:37,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558690896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:12:37,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:12:37,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 22:12:37,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570226065] [2024-11-09 22:12:37,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:12:37,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 22:12:37,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:12:37,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 22:12:37,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 22:12:37,322 INFO L87 Difference]: Start difference. First operand 35 states and 46 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:12:37,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:12:37,348 INFO L93 Difference]: Finished difference Result 93 states and 126 transitions. [2024-11-09 22:12:37,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 22:12:37,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-09 22:12:37,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:12:37,349 INFO L225 Difference]: With dead ends: 93 [2024-11-09 22:12:37,349 INFO L226 Difference]: Without dead ends: 62 [2024-11-09 22:12:37,350 INFO L431 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 [2024-11-09 22:12:37,350 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 34 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:12:37,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 74 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:12:37,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-09 22:12:37,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 39. [2024-11-09 22:12:37,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 38 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:12:37,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2024-11-09 22:12:37,359 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 11 [2024-11-09 22:12:37,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:12:37,360 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2024-11-09 22:12:37,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:12:37,360 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2024-11-09 22:12:37,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 22:12:37,361 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:12:37,361 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:12:37,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 22:12:37,361 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:12:37,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:12:37,363 INFO L85 PathProgramCache]: Analyzing trace with hash -917288672, now seen corresponding path program 1 times [2024-11-09 22:12:37,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:12:37,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594161374] [2024-11-09 22:12:37,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:12:37,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:12:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:12:37,474 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 22:12:37,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:12:37,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594161374] [2024-11-09 22:12:37,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594161374] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:12:37,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86017683] [2024-11-09 22:12:37,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:12:37,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:12:37,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:12:37,477 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) [2024-11-09 22:12:37,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 22:12:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:12:37,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 22:12:37,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:12:37,588 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 22:12:37,590 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:12:37,618 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 22:12:37,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86017683] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:12:37,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:12:37,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-09 22:12:37,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6403255] [2024-11-09 22:12:37,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:12:37,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 22:12:37,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:12:37,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 22:12:37,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 22:12:37,622 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:12:37,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:12:37,686 INFO L93 Difference]: Finished difference Result 153 states and 210 transitions. [2024-11-09 22:12:37,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 22:12:37,686 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-09 22:12:37,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:12:37,687 INFO L225 Difference]: With dead ends: 153 [2024-11-09 22:12:37,687 INFO L226 Difference]: Without dead ends: 120 [2024-11-09 22:12:37,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 22:12:37,688 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 170 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:12:37,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 176 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:12:37,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-09 22:12:37,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2024-11-09 22:12:37,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.3529411764705883) internal successors, (161), 119 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:12:37,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 161 transitions. [2024-11-09 22:12:37,701 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 161 transitions. Word has length 20 [2024-11-09 22:12:37,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:12:37,701 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 161 transitions. [2024-11-09 22:12:37,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:12:37,701 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 161 transitions. [2024-11-09 22:12:37,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 22:12:37,702 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:12:37,702 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:12:37,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 22:12:37,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:12:37,907 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:12:37,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:12:37,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1230007948, now seen corresponding path program 2 times [2024-11-09 22:12:37,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:12:37,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695918940] [2024-11-09 22:12:37,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:12:37,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:12:37,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:12:38,118 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-09 22:12:38,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:12:38,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695918940] [2024-11-09 22:12:38,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695918940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 22:12:38,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 22:12:38,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 22:12:38,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126581884] [2024-11-09 22:12:38,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 22:12:38,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 22:12:38,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:12:38,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 22:12:38,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 22:12:38,123 INFO L87 Difference]: Start difference. First operand 120 states and 161 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:12:38,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:12:38,148 INFO L93 Difference]: Finished difference Result 223 states and 304 transitions. [2024-11-09 22:12:38,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 22:12:38,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-09 22:12:38,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:12:38,150 INFO L225 Difference]: With dead ends: 223 [2024-11-09 22:12:38,152 INFO L226 Difference]: Without dead ends: 218 [2024-11-09 22:12:38,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 22:12:38,153 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 29 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 22:12:38,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 131 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 22:12:38,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-11-09 22:12:38,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 122. [2024-11-09 22:12:38,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.3553719008264462) internal successors, (164), 121 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:12:38,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 164 transitions. [2024-11-09 22:12:38,171 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 164 transitions. Word has length 47 [2024-11-09 22:12:38,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:12:38,172 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 164 transitions. [2024-11-09 22:12:38,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:12:38,172 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 164 transitions. [2024-11-09 22:12:38,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-09 22:12:38,173 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:12:38,174 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:12:38,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 22:12:38,174 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:12:38,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:12:38,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1308850929, now seen corresponding path program 1 times [2024-11-09 22:12:38,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:12:38,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504033177] [2024-11-09 22:12:38,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:12:38,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:12:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:12:38,299 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-09 22:12:38,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:12:38,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504033177] [2024-11-09 22:12:38,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504033177] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:12:38,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693163776] [2024-11-09 22:12:38,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:12:38,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:12:38,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:12:38,302 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) [2024-11-09 22:12:38,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 22:12:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:12:38,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 22:12:38,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:12:38,410 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-09 22:12:38,410 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:12:38,479 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-09 22:12:38,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693163776] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:12:38,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:12:38,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-09 22:12:38,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462023891] [2024-11-09 22:12:38,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:12:38,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 22:12:38,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:12:38,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 22:12:38,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-09 22:12:38,483 INFO L87 Difference]: Start difference. First operand 122 states and 164 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:12:38,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:12:38,685 INFO L93 Difference]: Finished difference Result 427 states and 588 transitions. [2024-11-09 22:12:38,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 22:12:38,686 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-09 22:12:38,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:12:38,687 INFO L225 Difference]: With dead ends: 427 [2024-11-09 22:12:38,688 INFO L226 Difference]: Without dead ends: 317 [2024-11-09 22:12:38,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-09 22:12:38,689 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 544 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:12:38,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 361 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:12:38,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2024-11-09 22:12:38,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 284. [2024-11-09 22:12:38,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.3639575971731448) internal successors, (386), 283 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:12:38,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 386 transitions. [2024-11-09 22:12:38,719 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 386 transitions. Word has length 53 [2024-11-09 22:12:38,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:12:38,719 INFO L471 AbstractCegarLoop]: Abstraction has 284 states and 386 transitions. [2024-11-09 22:12:38,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:12:38,720 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 386 transitions. [2024-11-09 22:12:38,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-09 22:12:38,722 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:12:38,724 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:12:38,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 22:12:38,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:12:38,925 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:12:38,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:12:38,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1969808331, now seen corresponding path program 2 times [2024-11-09 22:12:38,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:12:38,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409721372] [2024-11-09 22:12:38,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:12:38,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:12:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:12:39,236 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2024-11-09 22:12:39,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:12:39,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409721372] [2024-11-09 22:12:39,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409721372] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:12:39,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925222657] [2024-11-09 22:12:39,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 22:12:39,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:12:39,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:12:39,238 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) [2024-11-09 22:12:39,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 22:12:39,331 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 22:12:39,332 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:12:39,336 INFO L255 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 22:12:39,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:12:39,391 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2024-11-09 22:12:39,392 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:12:39,580 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2024-11-09 22:12:39,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925222657] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:12:39,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:12:39,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-09 22:12:39,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856644619] [2024-11-09 22:12:39,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:12:39,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 22:12:39,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:12:39,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 22:12:39,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-09 22:12:39,582 INFO L87 Difference]: Start difference. First operand 284 states and 386 transitions. Second operand has 25 states, 25 states have (on average 2.72) internal successors, (68), 25 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:12:39,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:12:39,860 INFO L93 Difference]: Finished difference Result 931 states and 1290 transitions. [2024-11-09 22:12:39,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 22:12:39,860 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.72) internal successors, (68), 25 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2024-11-09 22:12:39,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:12:39,863 INFO L225 Difference]: With dead ends: 931 [2024-11-09 22:12:39,863 INFO L226 Difference]: Without dead ends: 671 [2024-11-09 22:12:39,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-09 22:12:39,866 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 1632 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1632 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 22:12:39,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1632 Valid, 696 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 22:12:39,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2024-11-09 22:12:39,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 608. [2024-11-09 22:12:39,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 607 states have (on average 1.3673805601317957) internal successors, (830), 607 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:12:39,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 830 transitions. [2024-11-09 22:12:39,891 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 830 transitions. Word has length 107 [2024-11-09 22:12:39,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:12:39,892 INFO L471 AbstractCegarLoop]: Abstraction has 608 states and 830 transitions. [2024-11-09 22:12:39,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.72) internal successors, (68), 25 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:12:39,892 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 830 transitions. [2024-11-09 22:12:39,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-09 22:12:39,896 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:12:39,897 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:12:39,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 22:12:40,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:12:40,098 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:12:40,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:12:40,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1950541183, now seen corresponding path program 3 times [2024-11-09 22:12:40,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:12:40,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129475513] [2024-11-09 22:12:40,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:12:40,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:12:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:12:41,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 1705 trivial. 0 not checked. [2024-11-09 22:12:41,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:12:41,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129475513] [2024-11-09 22:12:41,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129475513] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:12:41,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393780545] [2024-11-09 22:12:41,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 22:12:41,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:12:41,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:12:41,005 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) [2024-11-09 22:12:41,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 22:12:41,093 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 22:12:41,094 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:12:41,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 22:12:41,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:12:41,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 2060 trivial. 0 not checked. [2024-11-09 22:12:41,257 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:12:41,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 2060 trivial. 0 not checked. [2024-11-09 22:12:41,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393780545] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:12:41,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:12:41,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 6, 6] total 32 [2024-11-09 22:12:41,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236493726] [2024-11-09 22:12:41,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:12:41,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-09 22:12:41,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:12:41,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-09 22:12:41,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=669, Unknown=0, NotChecked=0, Total=992 [2024-11-09 22:12:41,447 INFO L87 Difference]: Start difference. First operand 608 states and 830 transitions. Second operand has 32 states, 32 states have (on average 3.28125) internal successors, (105), 32 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:12:45,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:12:45,865 INFO L93 Difference]: Finished difference Result 2946 states and 4158 transitions. [2024-11-09 22:12:45,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2024-11-09 22:12:45,865 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.28125) internal successors, (105), 32 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 215 [2024-11-09 22:12:45,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:12:45,876 INFO L225 Difference]: With dead ends: 2946 [2024-11-09 22:12:45,881 INFO L226 Difference]: Without dead ends: 2383 [2024-11-09 22:12:45,896 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 517 SyntacticMatches, 1 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11989 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=8258, Invalid=21498, Unknown=0, NotChecked=0, Total=29756 [2024-11-09 22:12:45,900 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 14256 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14256 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 22:12:45,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14256 Valid, 866 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 22:12:45,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2383 states. [2024-11-09 22:12:45,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2383 to 695. [2024-11-09 22:12:45,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 694 states have (on average 1.3789625360230549) internal successors, (957), 694 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:12:45,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 957 transitions. [2024-11-09 22:12:45,956 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 957 transitions. Word has length 215 [2024-11-09 22:12:45,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:12:45,956 INFO L471 AbstractCegarLoop]: Abstraction has 695 states and 957 transitions. [2024-11-09 22:12:45,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.28125) internal successors, (105), 32 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:12:45,963 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 957 transitions. [2024-11-09 22:12:45,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2024-11-09 22:12:45,965 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:12:45,965 INFO L215 NwaCegarLoop]: trace histogram [27, 24, 24, 23, 23, 23, 23, 23, 23, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:12:45,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 22:12:46,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:12:46,166 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:12:46,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:12:46,166 INFO L85 PathProgramCache]: Analyzing trace with hash -657371914, now seen corresponding path program 4 times [2024-11-09 22:12:46,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:12:46,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288419890] [2024-11-09 22:12:46,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:12:46,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:12:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:12:46,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2589 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 2037 trivial. 0 not checked. [2024-11-09 22:12:46,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:12:46,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288419890] [2024-11-09 22:12:46,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288419890] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:12:46,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939963428] [2024-11-09 22:12:46,941 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 22:12:46,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:12:46,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:12:46,942 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:12:46,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 22:12:47,098 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 22:12:47,098 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:12:47,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 22:12:47,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:12:47,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2589 backedges. 0 proven. 1993 refuted. 0 times theorem prover too weak. 596 trivial. 0 not checked. [2024-11-09 22:12:47,356 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:12:48,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2589 backedges. 0 proven. 1993 refuted. 0 times theorem prover too weak. 596 trivial. 0 not checked. [2024-11-09 22:12:48,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939963428] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:12:48,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:12:48,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 51 [2024-11-09 22:12:48,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260940810] [2024-11-09 22:12:48,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:12:48,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-09 22:12:48,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:12:48,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-09 22:12:48,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2024-11-09 22:12:48,157 INFO L87 Difference]: Start difference. First operand 695 states and 957 transitions. Second operand has 51 states, 51 states have (on average 8.03921568627451) internal successors, (410), 51 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:12:49,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:12:49,145 INFO L93 Difference]: Finished difference Result 3643 states and 5241 transitions. [2024-11-09 22:12:49,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-09 22:12:49,146 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 8.03921568627451) internal successors, (410), 51 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 242 [2024-11-09 22:12:49,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:12:49,153 INFO L225 Difference]: With dead ends: 3643 [2024-11-09 22:12:49,153 INFO L226 Difference]: Without dead ends: 2998 [2024-11-09 22:12:49,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2024-11-09 22:12:49,154 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 4630 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4630 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 22:12:49,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4630 Valid, 1501 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 22:12:49,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2998 states. [2024-11-09 22:12:49,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2998 to 1370. [2024-11-09 22:12:49,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 1.3747260774287802) internal successors, (1882), 1369 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:12:49,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 1882 transitions. [2024-11-09 22:12:49,200 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 1882 transitions. Word has length 242 [2024-11-09 22:12:49,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:12:49,202 INFO L471 AbstractCegarLoop]: Abstraction has 1370 states and 1882 transitions. [2024-11-09 22:12:49,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 8.03921568627451) internal successors, (410), 51 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:12:49,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 1882 transitions. [2024-11-09 22:12:49,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2024-11-09 22:12:49,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:12:49,206 INFO L215 NwaCegarLoop]: trace histogram [52, 49, 49, 48, 48, 48, 48, 48, 48, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:12:49,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 22:12:49,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:12:49,407 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:12:49,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:12:49,407 INFO L85 PathProgramCache]: Analyzing trace with hash 588731524, now seen corresponding path program 5 times [2024-11-09 22:12:49,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:12:49,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766823346] [2024-11-09 22:12:49,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:12:49,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:12:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 22:12:51,560 INFO L134 CoverageAnalysis]: Checked inductivity of 10764 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 8412 trivial. 0 not checked. [2024-11-09 22:12:51,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 22:12:51,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766823346] [2024-11-09 22:12:51,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766823346] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 22:12:51,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994388925] [2024-11-09 22:12:51,563 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 22:12:51,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:12:51,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 22:12:51,565 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 22:12:51,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 22:14:01,360 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2024-11-09 22:14:01,361 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 22:14:01,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-09 22:14:01,396 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 22:14:01,502 INFO L134 CoverageAnalysis]: Checked inductivity of 10764 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 8412 trivial. 0 not checked. [2024-11-09 22:14:01,502 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 22:14:03,614 INFO L134 CoverageAnalysis]: Checked inductivity of 10764 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 8412 trivial. 0 not checked. [2024-11-09 22:14:03,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994388925] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 22:14:03,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 22:14:03,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 101 [2024-11-09 22:14:03,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814451337] [2024-11-09 22:14:03,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 22:14:03,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-11-09 22:14:03,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 22:14:03,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-11-09 22:14:03,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2024-11-09 22:14:03,619 INFO L87 Difference]: Start difference. First operand 1370 states and 1882 transitions. Second operand has 101 states, 101 states have (on average 2.1782178217821784) internal successors, (220), 101 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:14:13,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 22:14:13,890 INFO L93 Difference]: Finished difference Result 7243 states and 10416 transitions. [2024-11-09 22:14:13,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-11-09 22:14:13,891 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.1782178217821784) internal successors, (220), 101 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 467 [2024-11-09 22:14:13,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 22:14:13,925 INFO L225 Difference]: With dead ends: 7243 [2024-11-09 22:14:13,925 INFO L226 Difference]: Without dead ends: 5973 [2024-11-09 22:14:13,928 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 983 GetRequests, 884 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2024-11-09 22:14:13,930 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 13600 mSDsluCounter, 2932 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 452 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13600 SdHoareTripleChecker+Valid, 2971 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 452 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 22:14:13,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13600 Valid, 2971 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [452 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 22:14:13,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5973 states. [2024-11-09 22:14:14,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5973 to 2720. [2024-11-09 22:14:14,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2720 states, 2719 states have (on average 1.3725634424420743) internal successors, (3732), 2719 states have internal predecessors, (3732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:14:14,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2720 states to 2720 states and 3732 transitions. [2024-11-09 22:14:14,038 INFO L78 Accepts]: Start accepts. Automaton has 2720 states and 3732 transitions. Word has length 467 [2024-11-09 22:14:14,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 22:14:14,040 INFO L471 AbstractCegarLoop]: Abstraction has 2720 states and 3732 transitions. [2024-11-09 22:14:14,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.1782178217821784) internal successors, (220), 101 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 22:14:14,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2720 states and 3732 transitions. [2024-11-09 22:14:14,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 918 [2024-11-09 22:14:14,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 22:14:14,057 INFO L215 NwaCegarLoop]: trace histogram [102, 99, 99, 98, 98, 98, 98, 98, 98, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 22:14:14,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 22:14:14,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 22:14:14,261 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 22:14:14,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 22:14:14,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1617285014, now seen corresponding path program 6 times [2024-11-09 22:14:14,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 22:14:14,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530373522] [2024-11-09 22:14:14,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 22:14:14,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 22:14:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat