./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 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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 0.3.0-?-798a7b3-m [2025-03-03 13:28:14,171 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 13:28:14,225 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 13:28:14,230 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 13:28:14,233 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 13:28:14,251 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 13:28:14,252 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 13:28:14,252 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 13:28:14,253 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 13:28:14,253 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 13:28:14,253 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 13:28:14,254 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 13:28:14,254 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 13:28:14,254 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 13:28:14,254 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 13:28:14,255 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 13:28:14,255 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 13:28:14,255 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 13:28:14,255 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 13:28:14,255 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 13:28:14,255 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 13:28:14,255 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 13:28:14,255 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 13:28:14,255 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 13:28:14,255 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 13:28:14,255 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 13:28:14,255 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 13:28:14,256 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 13:28:14,256 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 13:28:14,256 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 13:28:14,256 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 13:28:14,256 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 13:28:14,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 13:28:14,256 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 13:28:14,257 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 13:28:14,257 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 13:28:14,257 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 13:28:14,257 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 13:28:14,257 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 13:28:14,257 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 13:28:14,257 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 13:28:14,257 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 13:28:14,257 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 13:28:14,257 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff2f22c8c94593047c07aca289bcba7e507bc3ee948a7529dc94c8d7792bd95d [2025-03-03 13:28:14,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 13:28:14,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 13:28:14,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 13:28:14,490 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 13:28:14,490 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 13:28:14,491 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/n.c24.i [2025-03-03 13:28:15,620 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/941cef87c/63c829dd704040cea647777795b74ae0/FLAG3afa70c01 [2025-03-03 13:28:15,851 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 13:28:15,852 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/n.c24.i [2025-03-03 13:28:15,858 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/941cef87c/63c829dd704040cea647777795b74ae0/FLAG3afa70c01 [2025-03-03 13:28:15,868 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/941cef87c/63c829dd704040cea647777795b74ae0 [2025-03-03 13:28:15,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 13:28:15,871 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 13:28:15,872 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 13:28:15,872 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 13:28:15,875 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 13:28:15,875 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 01:28:15" (1/1) ... [2025-03-03 13:28:15,876 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dce6d7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:28:15, skipping insertion in model container [2025-03-03 13:28:15,876 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 01:28:15" (1/1) ... [2025-03-03 13:28:15,890 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 13:28:15,997 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] [2025-03-03 13:28:16,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 13:28:16,051 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 13:28:16,058 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] [2025-03-03 13:28:16,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 13:28:16,087 INFO L204 MainTranslator]: Completed translation [2025-03-03 13:28:16,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:28:16 WrapperNode [2025-03-03 13:28:16,088 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 13:28:16,088 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 13:28:16,089 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 13:28:16,089 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 13:28:16,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:28:16" (1/1) ... [2025-03-03 13:28:16,097 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:28:16" (1/1) ... [2025-03-03 13:28:16,111 INFO L138 Inliner]: procedures = 68, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 151 [2025-03-03 13:28:16,112 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 13:28:16,112 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 13:28:16,112 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 13:28:16,113 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 13:28:16,118 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:28:16" (1/1) ... [2025-03-03 13:28:16,118 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:28:16" (1/1) ... [2025-03-03 13:28:16,119 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:28:16" (1/1) ... [2025-03-03 13:28:16,127 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]. [2025-03-03 13:28:16,128 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:28:16" (1/1) ... [2025-03-03 13:28:16,128 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:28:16" (1/1) ... [2025-03-03 13:28:16,132 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:28:16" (1/1) ... [2025-03-03 13:28:16,133 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:28:16" (1/1) ... [2025-03-03 13:28:16,138 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:28:16" (1/1) ... [2025-03-03 13:28:16,138 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:28:16" (1/1) ... [2025-03-03 13:28:16,140 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 13:28:16,140 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 13:28:16,140 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 13:28:16,140 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 13:28:16,141 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:28:16" (1/1) ... [2025-03-03 13:28:16,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 13:28:16,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:28:16,164 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-03 13:28:16,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-03 13:28:16,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 13:28:16,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-03-03 13:28:16,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-03-03 13:28:16,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-03-03 13:28:16,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-03-03 13:28:16,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-03 13:28:16,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-03 13:28:16,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-03 13:28:16,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-03 13:28:16,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-03 13:28:16,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-03 13:28:16,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-03 13:28:16,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-03 13:28:16,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-03 13:28:16,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-03 13:28:16,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 13:28:16,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-03 13:28:16,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-03 13:28:16,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-03 13:28:16,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#0 [2025-03-03 13:28:16,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#1 [2025-03-03 13:28:16,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#2 [2025-03-03 13:28:16,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#3 [2025-03-03 13:28:16,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 13:28:16,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 13:28:16,253 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 13:28:16,254 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 13:28:16,391 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L147: havoc foo_#t~mem3#1; [2025-03-03 13:28:16,392 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L143: havoc bar_#t~nondet1#1; [2025-03-03 13:28:16,392 INFO L1325 $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; [2025-03-03 13:28:16,402 INFO L? ?]: Removed 37 outVars from TransFormulas that were not future-live. [2025-03-03 13:28:16,402 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 13:28:16,412 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 13:28:16,412 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 13:28:16,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 01:28:16 BoogieIcfgContainer [2025-03-03 13:28:16,412 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 13:28:16,414 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 13:28:16,414 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 13:28:16,417 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 13:28:16,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 01:28:15" (1/3) ... [2025-03-03 13:28:16,417 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329e6153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 01:28:16, skipping insertion in model container [2025-03-03 13:28:16,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:28:16" (2/3) ... [2025-03-03 13:28:16,418 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329e6153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 01:28:16, skipping insertion in model container [2025-03-03 13:28:16,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 01:28:16" (3/3) ... [2025-03-03 13:28:16,419 INFO L128 eAbstractionObserver]: Analyzing ICFG n.c24.i [2025-03-03 13:28:16,428 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 13:28:16,429 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG n.c24.i that has 1 procedures, 32 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2025-03-03 13:28:16,467 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 13:28:16,475 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;@3f903d5b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 13:28:16,476 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 13:28:16,479 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 31 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:28:16,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-03-03 13:28:16,483 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:28:16,483 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-03 13:28:16,483 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:28:16,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:28:16,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1485607542, now seen corresponding path program 1 times [2025-03-03 13:28:16,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:28:16,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174554792] [2025-03-03 13:28:16,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:28:16,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:28:16,545 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-03 13:28:16,561 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-03 13:28:16,562 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:28:16,562 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:28:16,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 13:28:16,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:28:16,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174554792] [2025-03-03 13:28:16,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174554792] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 13:28:16,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 13:28:16,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 13:28:16,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971974366] [2025-03-03 13:28:16,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 13:28:16,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 13:28:16,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:28:16,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 13:28:16,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 13:28:16,651 INFO L87 Difference]: Start difference. First operand has 32 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 31 states have internal predecessors, (47), 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 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:28:16,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:28:16,697 INFO L93 Difference]: Finished difference Result 85 states and 129 transitions. [2025-03-03 13:28:16,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 13:28:16,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2025-03-03 13:28:16,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:28:16,703 INFO L225 Difference]: With dead ends: 85 [2025-03-03 13:28:16,703 INFO L226 Difference]: Without dead ends: 51 [2025-03-03 13:28:16,705 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 13:28:16,707 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 33 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 72 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 [2025-03-03 13:28:16,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 72 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:28:16,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2025-03-03 13:28:16,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 30. [2025-03-03 13:28:16,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:28:16,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2025-03-03 13:28:16,728 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 6 [2025-03-03 13:28:16,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:28:16,728 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2025-03-03 13:28:16,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:28:16,728 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2025-03-03 13:28:16,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-03 13:28:16,728 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:28:16,728 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:28:16,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 13:28:16,729 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:28:16,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:28:16,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1448226601, now seen corresponding path program 1 times [2025-03-03 13:28:16,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:28:16,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425597680] [2025-03-03 13:28:16,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:28:16,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:28:16,742 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-03 13:28:16,750 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-03 13:28:16,751 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:28:16,751 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:28:16,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-03 13:28:16,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:28:16,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425597680] [2025-03-03 13:28:16,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425597680] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:28:16,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039085077] [2025-03-03 13:28:16,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:28:16,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:28:16,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:28:16,816 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:28:16,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 13:28:16,868 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-03 13:28:16,881 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-03 13:28:16,881 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:28:16,881 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:28:16,882 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 13:28:16,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:28:16,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-03 13:28:16,911 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:28:16,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-03 13:28:16,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039085077] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:28:16,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:28:16,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-03 13:28:16,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943028281] [2025-03-03 13:28:16,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:28:16,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 13:28:16,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:28:16,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 13:28:16,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-03 13:28:16,935 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:28:17,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:28:17,011 INFO L93 Difference]: Finished difference Result 125 states and 177 transitions. [2025-03-03 13:28:17,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 13:28:17,011 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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 12 [2025-03-03 13:28:17,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:28:17,012 INFO L225 Difference]: With dead ends: 125 [2025-03-03 13:28:17,012 INFO L226 Difference]: Without dead ends: 99 [2025-03-03 13:28:17,012 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-03 13:28:17,013 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 120 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:28:17,013 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 143 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:28:17,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2025-03-03 13:28:17,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2025-03-03 13:28:17,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.3877551020408163) internal successors, (136), 98 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:28:17,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 136 transitions. [2025-03-03 13:28:17,028 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 136 transitions. Word has length 12 [2025-03-03 13:28:17,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:28:17,028 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 136 transitions. [2025-03-03 13:28:17,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:28:17,028 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 136 transitions. [2025-03-03 13:28:17,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-03-03 13:28:17,029 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:28:17,029 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2025-03-03 13:28:17,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-03 13:28:17,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:28:17,230 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:28:17,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:28:17,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1691606090, now seen corresponding path program 2 times [2025-03-03 13:28:17,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:28:17,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058167467] [2025-03-03 13:28:17,230 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:28:17,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:28:17,241 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-03-03 13:28:17,268 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-03-03 13:28:17,268 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:28:17,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:28:17,436 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2025-03-03 13:28:17,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:28:17,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058167467] [2025-03-03 13:28:17,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058167467] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 13:28:17,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 13:28:17,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 13:28:17,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530117804] [2025-03-03 13:28:17,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 13:28:17,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 13:28:17,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:28:17,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 13:28:17,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 13:28:17,438 INFO L87 Difference]: Start difference. First operand 99 states and 136 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:28:17,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:28:17,460 INFO L93 Difference]: Finished difference Result 188 states and 261 transitions. [2025-03-03 13:28:17,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 13:28:17,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 30 [2025-03-03 13:28:17,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:28:17,462 INFO L225 Difference]: With dead ends: 188 [2025-03-03 13:28:17,462 INFO L226 Difference]: Without dead ends: 185 [2025-03-03 13:28:17,462 INFO L434 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 [2025-03-03 13:28:17,462 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 27 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 105 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 [2025-03-03 13:28:17,462 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 105 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:28:17,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2025-03-03 13:28:17,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 100. [2025-03-03 13:28:17,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.393939393939394) internal successors, (138), 99 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:28:17,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 138 transitions. [2025-03-03 13:28:17,477 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 138 transitions. Word has length 30 [2025-03-03 13:28:17,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:28:17,477 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 138 transitions. [2025-03-03 13:28:17,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:28:17,478 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 138 transitions. [2025-03-03 13:28:17,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-03-03 13:28:17,478 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:28:17,479 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:28:17,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 13:28:17,479 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:28:17,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:28:17,480 INFO L85 PathProgramCache]: Analyzing trace with hash -278713850, now seen corresponding path program 1 times [2025-03-03 13:28:17,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:28:17,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271160177] [2025-03-03 13:28:17,480 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:28:17,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:28:17,492 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-03 13:28:17,505 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-03 13:28:17,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:28:17,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:28:17,588 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-03-03 13:28:17,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:28:17,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271160177] [2025-03-03 13:28:17,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271160177] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:28:17,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036500815] [2025-03-03 13:28:17,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:28:17,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:28:17,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:28:17,591 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:28:17,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 13:28:17,638 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-03 13:28:17,663 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-03 13:28:17,663 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:28:17,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:28:17,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-03 13:28:17,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:28:17,684 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-03-03 13:28:17,684 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:28:17,738 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2025-03-03 13:28:17,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036500815] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:28:17,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:28:17,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-03-03 13:28:17,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963535850] [2025-03-03 13:28:17,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:28:17,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-03 13:28:17,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:28:17,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-03 13:28:17,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-03-03 13:28:17,741 INFO L87 Difference]: Start difference. First operand 100 states and 138 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:28:17,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:28:17,878 INFO L93 Difference]: Finished difference Result 351 states and 498 transitions. [2025-03-03 13:28:17,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-03 13:28:17,879 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 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 35 [2025-03-03 13:28:17,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:28:17,880 INFO L225 Difference]: With dead ends: 351 [2025-03-03 13:28:17,880 INFO L226 Difference]: Without dead ends: 258 [2025-03-03 13:28:17,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-03-03 13:28:17,881 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 540 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:28:17,881 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 271 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:28:17,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2025-03-03 13:28:17,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 238. [2025-03-03 13:28:17,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.3924050632911393) internal successors, (330), 237 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:28:17,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 330 transitions. [2025-03-03 13:28:17,906 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 330 transitions. Word has length 35 [2025-03-03 13:28:17,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:28:17,906 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 330 transitions. [2025-03-03 13:28:17,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:28:17,906 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 330 transitions. [2025-03-03 13:28:17,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-03 13:28:17,908 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:28:17,908 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:28:17,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-03 13:28:18,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2025-03-03 13:28:18,108 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:28:18,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:28:18,110 INFO L85 PathProgramCache]: Analyzing trace with hash 2075939814, now seen corresponding path program 2 times [2025-03-03 13:28:18,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:28:18,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305685192] [2025-03-03 13:28:18,110 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:28:18,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:28:18,130 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 71 statements into 2 equivalence classes. [2025-03-03 13:28:18,166 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 71 of 71 statements. [2025-03-03 13:28:18,166 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:28:18,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:28:18,400 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2025-03-03 13:28:18,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:28:18,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305685192] [2025-03-03 13:28:18,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305685192] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:28:18,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717866172] [2025-03-03 13:28:18,400 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:28:18,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:28:18,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:28:18,402 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:28:18,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 13:28:18,466 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 71 statements into 2 equivalence classes. [2025-03-03 13:28:18,502 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 71 of 71 statements. [2025-03-03 13:28:18,502 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:28:18,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:28:18,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-03 13:28:18,507 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:28:18,536 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2025-03-03 13:28:18,536 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:28:18,722 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2025-03-03 13:28:18,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717866172] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:28:18,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:28:18,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-03-03 13:28:18,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528019394] [2025-03-03 13:28:18,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:28:18,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-03 13:28:18,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:28:18,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-03 13:28:18,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-03-03 13:28:18,724 INFO L87 Difference]: Start difference. First operand 238 states and 330 transitions. Second operand has 25 states, 25 states have (on average 1.6) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:28:18,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:28:18,976 INFO L93 Difference]: Finished difference Result 777 states and 1104 transitions. [2025-03-03 13:28:18,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-03 13:28:18,977 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.6) internal successors, (40), 25 states have internal predecessors, (40), 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 71 [2025-03-03 13:28:18,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:28:18,979 INFO L225 Difference]: With dead ends: 777 [2025-03-03 13:28:18,979 INFO L226 Difference]: Without dead ends: 552 [2025-03-03 13:28:18,980 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-03-03 13:28:18,980 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 1710 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1710 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 13:28:18,982 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1710 Valid, 565 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 13:28:18,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2025-03-03 13:28:19,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 514. [2025-03-03 13:28:19,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 513 states have (on average 1.391812865497076) internal successors, (714), 513 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:28:19,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 714 transitions. [2025-03-03 13:28:19,010 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 714 transitions. Word has length 71 [2025-03-03 13:28:19,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:28:19,011 INFO L471 AbstractCegarLoop]: Abstraction has 514 states and 714 transitions. [2025-03-03 13:28:19,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.6) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:28:19,011 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 714 transitions. [2025-03-03 13:28:19,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2025-03-03 13:28:19,018 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:28:19,018 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:28:19,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-03 13:28:19,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:28:19,222 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:28:19,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:28:19,223 INFO L85 PathProgramCache]: Analyzing trace with hash 349503398, now seen corresponding path program 3 times [2025-03-03 13:28:19,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:28:19,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626205358] [2025-03-03 13:28:19,223 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 13:28:19,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:28:19,252 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 143 statements into 23 equivalence classes. [2025-03-03 13:28:19,264 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 25 of 143 statements. [2025-03-03 13:28:19,264 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-03 13:28:19,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:28:19,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 85 proven. 1 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2025-03-03 13:28:19,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:28:19,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626205358] [2025-03-03 13:28:19,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626205358] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:28:19,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822340744] [2025-03-03 13:28:19,338 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 13:28:19,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:28:19,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:28:19,341 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:28:19,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-03 13:28:19,406 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 143 statements into 23 equivalence classes. [2025-03-03 13:28:19,423 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 25 of 143 statements. [2025-03-03 13:28:19,423 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-03 13:28:19,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:28:19,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-03 13:28:19,428 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:28:19,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 85 proven. 1 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2025-03-03 13:28:19,519 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:28:19,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 85 proven. 1 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2025-03-03 13:28:19,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822340744] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:28:19,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:28:19,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 12 [2025-03-03 13:28:19,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758588569] [2025-03-03 13:28:19,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:28:19,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-03 13:28:19,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:28:19,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-03 13:28:19,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2025-03-03 13:28:19,648 INFO L87 Difference]: Start difference. First operand 514 states and 714 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:28:19,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:28:19,770 INFO L93 Difference]: Finished difference Result 1982 states and 2798 transitions. [2025-03-03 13:28:19,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-03 13:28:19,770 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 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 143 [2025-03-03 13:28:19,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:28:19,778 INFO L225 Difference]: With dead ends: 1982 [2025-03-03 13:28:19,778 INFO L226 Difference]: Without dead ends: 1979 [2025-03-03 13:28:19,779 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2025-03-03 13:28:19,781 INFO L435 NwaCegarLoop]: 65 mSDtfsCounter, 215 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:28:19,781 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 405 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:28:19,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1979 states. [2025-03-03 13:28:19,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1979 to 568. [2025-03-03 13:28:19,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 567 states have (on average 1.402116402116402) internal successors, (795), 567 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:28:19,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 795 transitions. [2025-03-03 13:28:19,840 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 795 transitions. Word has length 143 [2025-03-03 13:28:19,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:28:19,840 INFO L471 AbstractCegarLoop]: Abstraction has 568 states and 795 transitions. [2025-03-03 13:28:19,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:28:19,840 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 795 transitions. [2025-03-03 13:28:19,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2025-03-03 13:28:19,842 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:28:19,842 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2025-03-03 13:28:19,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-03 13:28:20,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:28:20,043 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:28:20,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:28:20,043 INFO L85 PathProgramCache]: Analyzing trace with hash -2125357654, now seen corresponding path program 4 times [2025-03-03 13:28:20,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:28:20,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129311742] [2025-03-03 13:28:20,044 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 13:28:20,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:28:20,067 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 158 statements into 2 equivalence classes. [2025-03-03 13:28:20,089 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 158 of 158 statements. [2025-03-03 13:28:20,089 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 13:28:20,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:28:20,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1548 backedges. 148 proven. 34 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2025-03-03 13:28:20,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:28:20,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129311742] [2025-03-03 13:28:20,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129311742] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:28:20,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339305539] [2025-03-03 13:28:20,390 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 13:28:20,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:28:20,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:28:20,392 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) [2025-03-03 13:28:20,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-03 13:28:20,466 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 158 statements into 2 equivalence classes. [2025-03-03 13:28:20,526 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 158 of 158 statements. [2025-03-03 13:28:20,526 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 13:28:20,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:28:20,532 INFO L256 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-03 13:28:20,536 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:28:20,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1548 backedges. 0 proven. 1261 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2025-03-03 13:28:20,981 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:28:21,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1548 backedges. 0 proven. 1261 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2025-03-03 13:28:21,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339305539] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:28:21,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:28:21,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 25, 25] total 54 [2025-03-03 13:28:21,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27282335] [2025-03-03 13:28:21,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:28:21,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2025-03-03 13:28:21,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:28:21,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2025-03-03 13:28:21,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1140, Invalid=1722, Unknown=0, NotChecked=0, Total=2862 [2025-03-03 13:28:21,776 INFO L87 Difference]: Start difference. First operand 568 states and 795 transitions. Second operand has 54 states, 54 states have (on average 5.0) internal successors, (270), 54 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:28:31,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:28:31,097 INFO L93 Difference]: Finished difference Result 6659 states and 9443 transitions. [2025-03-03 13:28:31,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 284 states. [2025-03-03 13:28:31,098 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.0) internal successors, (270), 54 states have internal predecessors, (270), 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 158 [2025-03-03 13:28:31,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:28:31,117 INFO L225 Difference]: With dead ends: 6659 [2025-03-03 13:28:31,117 INFO L226 Difference]: Without dead ends: 6115 [2025-03-03 13:28:31,136 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 782 GetRequests, 500 SyntacticMatches, 0 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27490 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=12410, Invalid=67962, Unknown=0, NotChecked=0, Total=80372 [2025-03-03 13:28:31,138 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 30011 mSDsluCounter, 5517 mSDsCounter, 0 mSdLazyCounter, 2400 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30011 SdHoareTripleChecker+Valid, 5634 SdHoareTripleChecker+Invalid, 2602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 2400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-03 13:28:31,138 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30011 Valid, 5634 Invalid, 2602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 2400 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-03 13:28:31,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6115 states. [2025-03-03 13:28:31,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6115 to 1138. [2025-03-03 13:28:31,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 1137 states have (on average 1.3984168865435356) internal successors, (1590), 1137 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:28:31,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1590 transitions. [2025-03-03 13:28:31,211 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1590 transitions. Word has length 158 [2025-03-03 13:28:31,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:28:31,212 INFO L471 AbstractCegarLoop]: Abstraction has 1138 states and 1590 transitions. [2025-03-03 13:28:31,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.0) internal successors, (270), 54 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:28:31,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1590 transitions. [2025-03-03 13:28:31,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2025-03-03 13:28:31,216 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:28:31,216 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2025-03-03 13:28:31,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-03 13:28:31,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:28:31,417 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:28:31,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:28:31,418 INFO L85 PathProgramCache]: Analyzing trace with hash 763575334, now seen corresponding path program 5 times [2025-03-03 13:28:31,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:28:31,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097130464] [2025-03-03 13:28:31,418 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 13:28:31,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:28:31,444 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 307 statements into 47 equivalence classes. [2025-03-03 13:28:31,764 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) and asserted 307 of 307 statements. [2025-03-03 13:28:31,765 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2025-03-03 13:28:31,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:28:33,748 INFO L134 CoverageAnalysis]: Checked inductivity of 6582 backedges. 0 proven. 5446 refuted. 0 times theorem prover too weak. 1136 trivial. 0 not checked. [2025-03-03 13:28:33,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:28:33,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097130464] [2025-03-03 13:28:33,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097130464] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:28:33,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789362183] [2025-03-03 13:28:33,748 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 13:28:33,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:28:33,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:28:33,750 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) [2025-03-03 13:28:33,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-03 13:28:33,867 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 307 statements into 47 equivalence classes. [2025-03-03 13:29:14,560 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) and asserted 307 of 307 statements. [2025-03-03 13:29:14,560 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2025-03-03 13:29:14,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:29:14,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 1215 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-03-03 13:29:14,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:29:14,674 INFO L134 CoverageAnalysis]: Checked inductivity of 6582 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 5501 trivial. 0 not checked. [2025-03-03 13:29:14,674 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:29:16,457 INFO L134 CoverageAnalysis]: Checked inductivity of 6582 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 5501 trivial. 0 not checked. [2025-03-03 13:29:16,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789362183] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:29:16,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:29:16,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 96 [2025-03-03 13:29:16,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899406858] [2025-03-03 13:29:16,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:29:16,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2025-03-03 13:29:16,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:29:16,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2025-03-03 13:29:16,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-03-03 13:29:16,460 INFO L87 Difference]: Start difference. First operand 1138 states and 1590 transitions. Second operand has 96 states, 96 states have (on average 3.6354166666666665) internal successors, (349), 96 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:29:22,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:29:22,841 INFO L93 Difference]: Finished difference Result 6933 states and 10140 transitions. [2025-03-03 13:29:22,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-03-03 13:29:22,842 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 3.6354166666666665) internal successors, (349), 96 states have internal predecessors, (349), 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 307 [2025-03-03 13:29:22,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:29:22,856 INFO L225 Difference]: With dead ends: 6933 [2025-03-03 13:29:22,856 INFO L226 Difference]: Without dead ends: 5844 [2025-03-03 13:29:22,859 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 661 GetRequests, 567 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-03-03 13:29:22,859 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 10929 mSDsluCounter, 2346 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10929 SdHoareTripleChecker+Valid, 2377 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-03 13:29:22,860 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10929 Valid, 2377 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-03 13:29:22,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5844 states. [2025-03-03 13:29:22,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5844 to 2242. [2025-03-03 13:29:22,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2242 states, 2241 states have (on average 1.394912985274431) internal successors, (3126), 2241 states have internal predecessors, (3126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:29:22,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2242 states to 2242 states and 3126 transitions. [2025-03-03 13:29:22,959 INFO L78 Accepts]: Start accepts. Automaton has 2242 states and 3126 transitions. Word has length 307 [2025-03-03 13:29:22,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:29:22,960 INFO L471 AbstractCegarLoop]: Abstraction has 2242 states and 3126 transitions. [2025-03-03 13:29:22,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 3.6354166666666665) internal successors, (349), 96 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:29:22,961 INFO L276 IsEmpty]: Start isEmpty. Operand 2242 states and 3126 transitions. [2025-03-03 13:29:22,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2025-03-03 13:29:22,968 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:29:22,969 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 94, 94, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2025-03-03 13:29:22,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-03 13:29:23,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:29:23,169 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:29:23,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:29:23,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1879004378, now seen corresponding path program 6 times [2025-03-03 13:29:23,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:29:23,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433701671] [2025-03-03 13:29:23,170 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 13:29:23,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:29:23,226 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 595 statements into 95 equivalence classes. [2025-03-03 13:29:23,260 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) and asserted 103 of 595 statements. [2025-03-03 13:29:23,260 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2025-03-03 13:29:23,260 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:29:23,401 INFO L134 CoverageAnalysis]: Checked inductivity of 26934 backedges. 745 proven. 55 refuted. 0 times theorem prover too weak. 26134 trivial. 0 not checked. [2025-03-03 13:29:23,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:29:23,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433701671] [2025-03-03 13:29:23,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433701671] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:29:23,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605393771] [2025-03-03 13:29:23,401 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 13:29:23,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:29:23,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:29:23,403 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:29:23,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-03 13:29:23,566 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 595 statements into 95 equivalence classes. [2025-03-03 13:29:23,710 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) and asserted 103 of 595 statements. [2025-03-03 13:29:23,711 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2025-03-03 13:29:23,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:29:23,716 INFO L256 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-03 13:29:23,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:29:23,877 INFO L134 CoverageAnalysis]: Checked inductivity of 26934 backedges. 745 proven. 55 refuted. 0 times theorem prover too weak. 26134 trivial. 0 not checked. [2025-03-03 13:29:23,877 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:29:24,174 INFO L134 CoverageAnalysis]: Checked inductivity of 26934 backedges. 745 proven. 55 refuted. 0 times theorem prover too weak. 26134 trivial. 0 not checked. [2025-03-03 13:29:24,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605393771] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:29:24,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:29:24,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 24 [2025-03-03 13:29:24,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373330421] [2025-03-03 13:29:24,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:29:24,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-03 13:29:24,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:29:24,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-03 13:29:24,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2025-03-03 13:29:24,176 INFO L87 Difference]: Start difference. First operand 2242 states and 3126 transitions. Second operand has 24 states, 24 states have (on average 4.125) internal successors, (99), 24 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:29:25,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:29:25,141 INFO L93 Difference]: Finished difference Result 23486 states and 33734 transitions. [2025-03-03 13:29:25,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-03 13:29:25,142 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.125) internal successors, (99), 24 states have internal predecessors, (99), 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 595 [2025-03-03 13:29:25,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:29:25,185 INFO L225 Difference]: With dead ends: 23486 [2025-03-03 13:29:25,185 INFO L226 Difference]: Without dead ends: 23483 [2025-03-03 13:29:25,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1205 GetRequests, 1176 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2025-03-03 13:29:25,194 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 941 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:29:25,194 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 1865 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:29:25,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23483 states. [2025-03-03 13:29:25,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23483 to 2368. [2025-03-03 13:29:25,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2368 states, 2367 states have (on average 1.4005069708491762) internal successors, (3315), 2367 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:29:25,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2368 states to 2368 states and 3315 transitions. [2025-03-03 13:29:25,436 INFO L78 Accepts]: Start accepts. Automaton has 2368 states and 3315 transitions. Word has length 595 [2025-03-03 13:29:25,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:29:25,438 INFO L471 AbstractCegarLoop]: Abstraction has 2368 states and 3315 transitions. [2025-03-03 13:29:25,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.125) internal successors, (99), 24 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:29:25,438 INFO L276 IsEmpty]: Start isEmpty. Operand 2368 states and 3315 transitions. [2025-03-03 13:29:25,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 631 [2025-03-03 13:29:25,447 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:29:25,447 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 94, 94, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2025-03-03 13:29:25,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-03 13:29:25,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:29:25,648 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:29:25,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:29:25,648 INFO L85 PathProgramCache]: Analyzing trace with hash 2076532010, now seen corresponding path program 7 times [2025-03-03 13:29:25,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:29:25,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697546842] [2025-03-03 13:29:25,648 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-03 13:29:25,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:29:25,696 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 630 statements into 1 equivalence classes. [2025-03-03 13:29:25,776 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 630 of 630 statements. [2025-03-03 13:29:25,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:29:25,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:29:31,821 INFO L134 CoverageAnalysis]: Checked inductivity of 27872 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 23407 trivial. 0 not checked. [2025-03-03 13:29:31,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:29:31,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697546842] [2025-03-03 13:29:31,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697546842] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:29:31,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505483902] [2025-03-03 13:29:31,822 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-03 13:29:31,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:29:31,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:29:31,825 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:29:31,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-03 13:29:32,019 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 630 statements into 1 equivalence classes. [2025-03-03 13:29:32,197 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 630 of 630 statements. [2025-03-03 13:29:32,197 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:29:32,197 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:29:32,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 2460 conjuncts, 96 conjuncts are in the unsatisfiable core [2025-03-03 13:29:32,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:29:32,324 INFO L134 CoverageAnalysis]: Checked inductivity of 27872 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 23407 trivial. 0 not checked. [2025-03-03 13:29:32,325 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:29:39,049 INFO L134 CoverageAnalysis]: Checked inductivity of 27872 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 23407 trivial. 0 not checked. [2025-03-03 13:29:39,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505483902] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:29:39,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:29:39,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2025-03-03 13:29:39,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715704122] [2025-03-03 13:29:39,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:29:39,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2025-03-03 13:29:39,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:29:39,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2025-03-03 13:29:39,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2025-03-03 13:29:39,059 INFO L87 Difference]: Start difference. First operand 2368 states and 3315 transitions. Second operand has 193 states, 193 states have (on average 1.077720207253886) internal successors, (208), 193 states have internal predecessors, (208), 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)