./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.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 42d34b3801344b79b388ecea52b2e670196aa6b758fe24ea6ecf5c2b8bbf579b --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 23:05:32,839 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 23:05:32,913 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 23:05:32,919 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 23:05:32,919 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 23:05:32,952 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 23:05:32,952 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 23:05:32,953 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 23:05:32,953 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 23:05:32,955 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 23:05:32,956 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 23:05:32,956 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 23:05:32,957 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 23:05:32,958 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 23:05:32,958 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 23:05:32,959 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 23:05:32,959 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 23:05:32,959 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 23:05:32,960 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 23:05:32,962 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 23:05:32,963 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 23:05:32,963 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 23:05:32,963 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 23:05:32,964 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 23:05:32,964 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 23:05:32,964 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 23:05:32,964 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 23:05:32,965 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 23:05:32,965 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 23:05:32,966 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 23:05:32,966 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 23:05:32,966 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 23:05:32,966 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 23:05:32,967 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 23:05:32,967 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 23:05:32,967 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 23:05:32,967 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 23:05:32,968 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 23:05:32,968 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 23:05:32,968 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 23:05:32,968 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 23:05:32,970 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 23:05:32,970 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42d34b3801344b79b388ecea52b2e670196aa6b758fe24ea6ecf5c2b8bbf579b [2024-11-16 23:05:33,223 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 23:05:33,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 23:05:33,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 23:05:33,254 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 23:05:33,255 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 23:05:33,256 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i [2024-11-16 23:05:34,722 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 23:05:35,049 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 23:05:35,050 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i [2024-11-16 23:05:35,075 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7eb5bca4e/335272513b1f44fd9dedac4a8b2d3828/FLAG740c5bfb1 [2024-11-16 23:05:35,308 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7eb5bca4e/335272513b1f44fd9dedac4a8b2d3828 [2024-11-16 23:05:35,313 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 23:05:35,314 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 23:05:35,317 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 23:05:35,317 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 23:05:35,323 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 23:05:35,325 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:05:35" (1/1) ... [2024-11-16 23:05:35,326 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@328d49b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:35, skipping insertion in model container [2024-11-16 23:05:35,326 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:05:35" (1/1) ... [2024-11-16 23:05:35,382 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 23:05:35,793 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[33021,33034] [2024-11-16 23:05:36,018 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[45234,45247] [2024-11-16 23:05:36,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 23:05:36,050 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 23:05:36,080 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[33021,33034] [2024-11-16 23:05:36,148 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[45234,45247] [2024-11-16 23:05:36,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 23:05:36,201 INFO L204 MainTranslator]: Completed translation [2024-11-16 23:05:36,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:36 WrapperNode [2024-11-16 23:05:36,202 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 23:05:36,203 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 23:05:36,203 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 23:05:36,203 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 23:05:36,209 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:36" (1/1) ... [2024-11-16 23:05:36,237 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:36" (1/1) ... [2024-11-16 23:05:36,310 INFO L138 Inliner]: procedures = 177, calls = 340, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1550 [2024-11-16 23:05:36,310 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 23:05:36,311 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 23:05:36,311 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 23:05:36,311 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 23:05:36,323 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:36" (1/1) ... [2024-11-16 23:05:36,324 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:36" (1/1) ... [2024-11-16 23:05:36,339 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:36" (1/1) ... [2024-11-16 23:05:36,441 INFO L175 MemorySlicer]: Split 304 memory accesses to 3 slices as follows [2, 34, 268]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 62 writes are split as follows [0, 4, 58]. [2024-11-16 23:05:36,442 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:36" (1/1) ... [2024-11-16 23:05:36,442 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:36" (1/1) ... [2024-11-16 23:05:36,475 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:36" (1/1) ... [2024-11-16 23:05:36,478 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:36" (1/1) ... [2024-11-16 23:05:36,487 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:36" (1/1) ... [2024-11-16 23:05:36,498 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:36" (1/1) ... [2024-11-16 23:05:36,515 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 23:05:36,516 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 23:05:36,516 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 23:05:36,516 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 23:05:36,517 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:36" (1/1) ... [2024-11-16 23:05:36,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 23:05:36,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:05:36,552 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 23:05:36,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 23:05:36,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 23:05:36,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 23:05:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 23:05:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-16 23:05:36,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-16 23:05:36,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 23:05:36,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 23:05:36,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 23:05:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-16 23:05:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-16 23:05:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-16 23:05:36,602 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-16 23:05:36,602 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-16 23:05:36,602 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-16 23:05:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2024-11-16 23:05:36,602 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2024-11-16 23:05:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 23:05:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 23:05:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-16 23:05:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-16 23:05:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-16 23:05:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 23:05:36,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-16 23:05:36,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-16 23:05:36,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-16 23:05:36,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 23:05:36,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 23:05:36,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 23:05:36,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 23:05:36,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 23:05:36,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 23:05:36,872 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 23:05:36,875 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 23:05:38,414 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L763: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2024-11-16 23:05:38,531 INFO L? ?]: Removed 354 outVars from TransFormulas that were not future-live. [2024-11-16 23:05:38,532 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 23:05:38,596 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 23:05:38,596 INFO L336 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-16 23:05:38,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 11:05:38 BoogieIcfgContainer [2024-11-16 23:05:38,597 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 23:05:38,600 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 23:05:38,600 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 23:05:38,603 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 23:05:38,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:05:35" (1/3) ... [2024-11-16 23:05:38,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419ecd32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:05:38, skipping insertion in model container [2024-11-16 23:05:38,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:05:36" (2/3) ... [2024-11-16 23:05:38,605 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419ecd32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:05:38, skipping insertion in model container [2024-11-16 23:05:38,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 11:05:38" (3/3) ... [2024-11-16 23:05:38,606 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test8-2.i [2024-11-16 23:05:38,623 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 23:05:38,623 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 23:05:38,708 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 23:05:38,716 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;@795a203a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 23:05:38,717 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-16 23:05:38,723 INFO L276 IsEmpty]: Start isEmpty. Operand has 474 states, 448 states have (on average 1.6227678571428572) internal successors, (727), 465 states have internal predecessors, (727), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-16 23:05:38,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-16 23:05:38,731 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:05:38,732 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:05:38,732 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:05:38,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:05:38,738 INFO L85 PathProgramCache]: Analyzing trace with hash -720866169, now seen corresponding path program 1 times [2024-11-16 23:05:38,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:05:38,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901762157] [2024-11-16 23:05:38,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:05:38,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:05:38,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:38,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:05:38,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:05:38,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901762157] [2024-11-16 23:05:38,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901762157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:05:38,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:05:38,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 23:05:38,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119616878] [2024-11-16 23:05:38,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:05:38,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 23:05:38,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:05:38,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 23:05:38,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 23:05:38,943 INFO L87 Difference]: Start difference. First operand has 474 states, 448 states have (on average 1.6227678571428572) internal successors, (727), 465 states have internal predecessors, (727), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:05:39,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:05:39,115 INFO L93 Difference]: Finished difference Result 946 states and 1549 transitions. [2024-11-16 23:05:39,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 23:05:39,118 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-16 23:05:39,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:05:39,138 INFO L225 Difference]: With dead ends: 946 [2024-11-16 23:05:39,139 INFO L226 Difference]: Without dead ends: 435 [2024-11-16 23:05:39,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 23:05:39,150 INFO L432 NwaCegarLoop]: 647 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 23:05:39,153 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 647 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 23:05:39,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2024-11-16 23:05:39,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2024-11-16 23:05:39,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 410 states have (on average 1.4585365853658536) internal successors, (598), 426 states have internal predecessors, (598), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-16 23:05:39,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 638 transitions. [2024-11-16 23:05:39,242 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 638 transitions. Word has length 9 [2024-11-16 23:05:39,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:05:39,244 INFO L471 AbstractCegarLoop]: Abstraction has 435 states and 638 transitions. [2024-11-16 23:05:39,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:05:39,245 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 638 transitions. [2024-11-16 23:05:39,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-16 23:05:39,248 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:05:39,249 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:05:39,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 23:05:39,250 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:05:39,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:05:39,251 INFO L85 PathProgramCache]: Analyzing trace with hash -910072341, now seen corresponding path program 1 times [2024-11-16 23:05:39,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:05:39,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247231428] [2024-11-16 23:05:39,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:05:39,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:05:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:39,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:05:39,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:05:39,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247231428] [2024-11-16 23:05:39,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247231428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:05:39,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:05:39,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 23:05:39,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145808660] [2024-11-16 23:05:39,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:05:39,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 23:05:39,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:05:39,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 23:05:39,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 23:05:39,790 INFO L87 Difference]: Start difference. First operand 435 states and 638 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:05:40,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:05:40,087 INFO L93 Difference]: Finished difference Result 1053 states and 1545 transitions. [2024-11-16 23:05:40,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 23:05:40,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 65 [2024-11-16 23:05:40,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:05:40,095 INFO L225 Difference]: With dead ends: 1053 [2024-11-16 23:05:40,096 INFO L226 Difference]: Without dead ends: 823 [2024-11-16 23:05:40,097 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 23:05:40,099 INFO L432 NwaCegarLoop]: 577 mSDtfsCounter, 550 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 1723 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 23:05:40,099 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 1723 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 23:05:40,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2024-11-16 23:05:40,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 437. [2024-11-16 23:05:40,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 412 states have (on average 1.4563106796116505) internal successors, (600), 428 states have internal predecessors, (600), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-16 23:05:40,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 640 transitions. [2024-11-16 23:05:40,140 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 640 transitions. Word has length 65 [2024-11-16 23:05:40,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:05:40,142 INFO L471 AbstractCegarLoop]: Abstraction has 437 states and 640 transitions. [2024-11-16 23:05:40,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:05:40,142 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 640 transitions. [2024-11-16 23:05:40,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-16 23:05:40,145 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:05:40,145 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:05:40,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 23:05:40,146 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:05:40,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:05:40,146 INFO L85 PathProgramCache]: Analyzing trace with hash -571298680, now seen corresponding path program 1 times [2024-11-16 23:05:40,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:05:40,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531255355] [2024-11-16 23:05:40,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:05:40,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:05:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:40,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:05:40,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:05:40,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531255355] [2024-11-16 23:05:40,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531255355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:05:40,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:05:40,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 23:05:40,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806112172] [2024-11-16 23:05:40,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:05:40,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 23:05:40,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:05:40,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 23:05:40,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 23:05:40,492 INFO L87 Difference]: Start difference. First operand 437 states and 640 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:05:40,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:05:40,658 INFO L93 Difference]: Finished difference Result 828 states and 1210 transitions. [2024-11-16 23:05:40,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 23:05:40,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-11-16 23:05:40,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:05:40,661 INFO L225 Difference]: With dead ends: 828 [2024-11-16 23:05:40,661 INFO L226 Difference]: Without dead ends: 395 [2024-11-16 23:05:40,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 23:05:40,663 INFO L432 NwaCegarLoop]: 503 mSDtfsCounter, 30 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1489 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 23:05:40,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1489 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 23:05:40,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-11-16 23:05:40,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2024-11-16 23:05:40,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 370 states have (on average 1.4135135135135135) internal successors, (523), 386 states have internal predecessors, (523), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-16 23:05:40,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 563 transitions. [2024-11-16 23:05:40,675 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 563 transitions. Word has length 86 [2024-11-16 23:05:40,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:05:40,676 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 563 transitions. [2024-11-16 23:05:40,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:05:40,676 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 563 transitions. [2024-11-16 23:05:40,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-16 23:05:40,679 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:05:40,679 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:05:40,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 23:05:40,679 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:05:40,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:05:40,680 INFO L85 PathProgramCache]: Analyzing trace with hash -859065567, now seen corresponding path program 1 times [2024-11-16 23:05:40,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:05:40,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449486042] [2024-11-16 23:05:40,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:05:40,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:05:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:40,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:05:40,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:05:40,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449486042] [2024-11-16 23:05:40,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449486042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:05:40,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:05:40,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 23:05:40,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103756950] [2024-11-16 23:05:40,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:05:40,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 23:05:40,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:05:40,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 23:05:40,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 23:05:40,853 INFO L87 Difference]: Start difference. First operand 395 states and 563 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:05:41,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:05:41,034 INFO L93 Difference]: Finished difference Result 1040 states and 1486 transitions. [2024-11-16 23:05:41,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 23:05:41,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2024-11-16 23:05:41,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:05:41,038 INFO L225 Difference]: With dead ends: 1040 [2024-11-16 23:05:41,039 INFO L226 Difference]: Without dead ends: 649 [2024-11-16 23:05:41,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 23:05:41,041 INFO L432 NwaCegarLoop]: 690 mSDtfsCounter, 296 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 23:05:41,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1189 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 23:05:41,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2024-11-16 23:05:41,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 646. [2024-11-16 23:05:41,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 620 states have (on average 1.4209677419354838) internal successors, (881), 636 states have internal predecessors, (881), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-16 23:05:41,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 923 transitions. [2024-11-16 23:05:41,060 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 923 transitions. Word has length 86 [2024-11-16 23:05:41,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:05:41,061 INFO L471 AbstractCegarLoop]: Abstraction has 646 states and 923 transitions. [2024-11-16 23:05:41,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:05:41,061 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 923 transitions. [2024-11-16 23:05:41,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-16 23:05:41,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:05:41,063 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:05:41,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 23:05:41,063 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:05:41,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:05:41,064 INFO L85 PathProgramCache]: Analyzing trace with hash 648997862, now seen corresponding path program 1 times [2024-11-16 23:05:41,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:05:41,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026585280] [2024-11-16 23:05:41,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:05:41,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:05:41,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:41,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 23:05:41,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:41,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-16 23:05:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:41,565 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 23:05:41,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:05:41,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026585280] [2024-11-16 23:05:41,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026585280] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:05:41,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877120493] [2024-11-16 23:05:41,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:05:41,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:05:41,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:05:41,570 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:05:41,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 23:05:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:41,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-16 23:05:41,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:05:42,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 23:05:42,141 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 23:05:42,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877120493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:05:42,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 23:05:42,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2024-11-16 23:05:42,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34341979] [2024-11-16 23:05:42,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:05:42,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 23:05:42,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:05:42,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 23:05:42,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-16 23:05:42,144 INFO L87 Difference]: Start difference. First operand 646 states and 923 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:05:42,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:05:42,515 INFO L93 Difference]: Finished difference Result 1269 states and 1828 transitions. [2024-11-16 23:05:42,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 23:05:42,517 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 101 [2024-11-16 23:05:42,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:05:42,523 INFO L225 Difference]: With dead ends: 1269 [2024-11-16 23:05:42,523 INFO L226 Difference]: Without dead ends: 668 [2024-11-16 23:05:42,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-16 23:05:42,525 INFO L432 NwaCegarLoop]: 506 mSDtfsCounter, 25 mSDsluCounter, 2291 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2797 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 23:05:42,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2797 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 23:05:42,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2024-11-16 23:05:42,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 660. [2024-11-16 23:05:42,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 634 states have (on average 1.414826498422713) internal successors, (897), 650 states have internal predecessors, (897), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-16 23:05:42,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 939 transitions. [2024-11-16 23:05:42,553 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 939 transitions. Word has length 101 [2024-11-16 23:05:42,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:05:42,554 INFO L471 AbstractCegarLoop]: Abstraction has 660 states and 939 transitions. [2024-11-16 23:05:42,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:05:42,554 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 939 transitions. [2024-11-16 23:05:42,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-16 23:05:42,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:05:42,555 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:05:42,582 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 23:05:42,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:05:42,758 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:05:42,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:05:42,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1005093397, now seen corresponding path program 1 times [2024-11-16 23:05:42,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:05:42,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327912115] [2024-11-16 23:05:42,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:05:42,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:05:42,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:43,292 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-16 23:05:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:43,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-16 23:05:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:43,304 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 23:05:43,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:05:43,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327912115] [2024-11-16 23:05:43,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327912115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:05:43,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:05:43,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 23:05:43,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507745453] [2024-11-16 23:05:43,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:05:43,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 23:05:43,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:05:43,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 23:05:43,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 23:05:43,307 INFO L87 Difference]: Start difference. First operand 660 states and 939 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:05:44,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:05:44,288 INFO L93 Difference]: Finished difference Result 1266 states and 1817 transitions. [2024-11-16 23:05:44,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 23:05:44,289 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 102 [2024-11-16 23:05:44,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:05:44,293 INFO L225 Difference]: With dead ends: 1266 [2024-11-16 23:05:44,293 INFO L226 Difference]: Without dead ends: 659 [2024-11-16 23:05:44,295 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-16 23:05:44,299 INFO L432 NwaCegarLoop]: 442 mSDtfsCounter, 69 mSDsluCounter, 1851 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 2293 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 23:05:44,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 2293 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 23:05:44,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2024-11-16 23:05:44,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 654. [2024-11-16 23:05:44,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 628 states have (on average 1.4124203821656052) internal successors, (887), 644 states have internal predecessors, (887), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-16 23:05:44,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 929 transitions. [2024-11-16 23:05:44,323 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 929 transitions. Word has length 102 [2024-11-16 23:05:44,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:05:44,325 INFO L471 AbstractCegarLoop]: Abstraction has 654 states and 929 transitions. [2024-11-16 23:05:44,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:05:44,325 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 929 transitions. [2024-11-16 23:05:44,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-16 23:05:44,326 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:05:44,327 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:05:44,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 23:05:44,327 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:05:44,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:05:44,327 INFO L85 PathProgramCache]: Analyzing trace with hash -881351645, now seen corresponding path program 1 times [2024-11-16 23:05:44,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:05:44,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689337674] [2024-11-16 23:05:44,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:05:44,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:05:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:44,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-16 23:05:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:44,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-16 23:05:44,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:44,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 23:05:44,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:05:44,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689337674] [2024-11-16 23:05:44,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689337674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:05:44,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:05:44,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 23:05:44,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220309365] [2024-11-16 23:05:44,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:05:44,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 23:05:44,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:05:44,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 23:05:44,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 23:05:44,828 INFO L87 Difference]: Start difference. First operand 654 states and 929 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:05:46,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-16 23:05:46,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:05:46,963 INFO L93 Difference]: Finished difference Result 1265 states and 1814 transitions. [2024-11-16 23:05:46,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 23:05:46,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 103 [2024-11-16 23:05:46,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:05:46,967 INFO L225 Difference]: With dead ends: 1265 [2024-11-16 23:05:46,967 INFO L226 Difference]: Without dead ends: 663 [2024-11-16 23:05:46,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 23:05:46,969 INFO L432 NwaCegarLoop]: 444 mSDtfsCounter, 64 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 2313 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-16 23:05:46,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 2313 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-16 23:05:46,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2024-11-16 23:05:46,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 660. [2024-11-16 23:05:46,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 634 states have (on average 1.4085173501577286) internal successors, (893), 650 states have internal predecessors, (893), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-16 23:05:46,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 935 transitions. [2024-11-16 23:05:46,987 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 935 transitions. Word has length 103 [2024-11-16 23:05:46,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:05:46,988 INFO L471 AbstractCegarLoop]: Abstraction has 660 states and 935 transitions. [2024-11-16 23:05:46,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:05:46,988 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 935 transitions. [2024-11-16 23:05:46,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-16 23:05:46,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:05:46,989 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:05:46,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 23:05:46,989 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:05:46,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:05:46,990 INFO L85 PathProgramCache]: Analyzing trace with hash 174310208, now seen corresponding path program 1 times [2024-11-16 23:05:46,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:05:46,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861560029] [2024-11-16 23:05:46,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:05:46,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:05:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:47,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-16 23:05:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:47,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-16 23:05:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:47,518 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 23:05:47,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:05:47,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861560029] [2024-11-16 23:05:47,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861560029] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:05:47,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240361039] [2024-11-16 23:05:47,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:05:47,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:05:47,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:05:47,523 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:05:47,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 23:05:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:47,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-16 23:05:47,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:05:47,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-16 23:05:47,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2024-11-16 23:05:48,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 23:05:48,804 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 23:05:48,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240361039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:05:48,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 23:05:48,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2024-11-16 23:05:48,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765018917] [2024-11-16 23:05:48,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:05:48,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 23:05:48,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:05:48,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 23:05:48,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-16 23:05:48,806 INFO L87 Difference]: Start difference. First operand 660 states and 935 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:05:50,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:05:50,552 INFO L93 Difference]: Finished difference Result 1565 states and 2225 transitions. [2024-11-16 23:05:50,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 23:05:50,553 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 104 [2024-11-16 23:05:50,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:05:50,557 INFO L225 Difference]: With dead ends: 1565 [2024-11-16 23:05:50,558 INFO L226 Difference]: Without dead ends: 957 [2024-11-16 23:05:50,559 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2024-11-16 23:05:50,560 INFO L432 NwaCegarLoop]: 505 mSDtfsCounter, 594 mSDsluCounter, 2617 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 3122 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 23:05:50,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [598 Valid, 3122 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 23:05:50,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2024-11-16 23:05:50,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 656. [2024-11-16 23:05:50,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 630 states have (on average 1.4095238095238096) internal successors, (888), 646 states have internal predecessors, (888), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-16 23:05:50,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 930 transitions. [2024-11-16 23:05:50,587 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 930 transitions. Word has length 104 [2024-11-16 23:05:50,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:05:50,588 INFO L471 AbstractCegarLoop]: Abstraction has 656 states and 930 transitions. [2024-11-16 23:05:50,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:05:50,588 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 930 transitions. [2024-11-16 23:05:50,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-16 23:05:50,591 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:05:50,592 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:05:50,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 23:05:50,792 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,SelfDestructingSolverStorable7 [2024-11-16 23:05:50,793 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:05:50,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:05:50,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1400490529, now seen corresponding path program 1 times [2024-11-16 23:05:50,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:05:50,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205669338] [2024-11-16 23:05:50,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:05:50,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:05:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:51,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-16 23:05:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:51,141 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-16 23:05:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:51,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 23:05:51,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:05:51,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205669338] [2024-11-16 23:05:51,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205669338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:05:51,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:05:51,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 23:05:51,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168321616] [2024-11-16 23:05:51,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:05:51,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 23:05:51,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:05:51,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 23:05:51,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 23:05:51,151 INFO L87 Difference]: Start difference. First operand 656 states and 930 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:05:52,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:05:52,062 INFO L93 Difference]: Finished difference Result 1267 states and 1813 transitions. [2024-11-16 23:05:52,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 23:05:52,063 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 104 [2024-11-16 23:05:52,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:05:52,067 INFO L225 Difference]: With dead ends: 1267 [2024-11-16 23:05:52,068 INFO L226 Difference]: Without dead ends: 669 [2024-11-16 23:05:52,070 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-16 23:05:52,071 INFO L432 NwaCegarLoop]: 435 mSDtfsCounter, 68 mSDsluCounter, 2235 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 2670 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 23:05:52,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 2670 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 23:05:52,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2024-11-16 23:05:52,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 664. [2024-11-16 23:05:52,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 638 states have (on average 1.4075235109717867) internal successors, (898), 654 states have internal predecessors, (898), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-16 23:05:52,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 940 transitions. [2024-11-16 23:05:52,091 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 940 transitions. Word has length 104 [2024-11-16 23:05:52,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:05:52,092 INFO L471 AbstractCegarLoop]: Abstraction has 664 states and 940 transitions. [2024-11-16 23:05:52,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 states have internal predecessors, (95), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:05:52,093 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 940 transitions. [2024-11-16 23:05:52,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-16 23:05:52,094 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:05:52,094 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:05:52,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 23:05:52,095 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:05:52,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:05:52,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1756716815, now seen corresponding path program 1 times [2024-11-16 23:05:52,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:05:52,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897144463] [2024-11-16 23:05:52,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:05:52,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:05:52,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:52,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-16 23:05:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:52,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-16 23:05:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:52,513 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-16 23:05:52,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:05:52,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897144463] [2024-11-16 23:05:52,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897144463] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:05:52,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890091367] [2024-11-16 23:05:52,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:05:52,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:05:52,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:05:52,516 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:05:52,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 23:05:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:53,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-16 23:05:53,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:05:53,072 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:05:53,072 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 23:05:53,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890091367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:05:53,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 23:05:53,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2024-11-16 23:05:53,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222403318] [2024-11-16 23:05:53,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:05:53,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 23:05:53,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:05:53,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 23:05:53,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:05:53,074 INFO L87 Difference]: Start difference. First operand 664 states and 940 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 23:05:53,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:05:53,198 INFO L93 Difference]: Finished difference Result 1232 states and 1757 transitions. [2024-11-16 23:05:53,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 23:05:53,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 104 [2024-11-16 23:05:53,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:05:53,203 INFO L225 Difference]: With dead ends: 1232 [2024-11-16 23:05:53,203 INFO L226 Difference]: Without dead ends: 667 [2024-11-16 23:05:53,204 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:05:53,205 INFO L432 NwaCegarLoop]: 518 mSDtfsCounter, 0 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 23:05:53,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1550 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 23:05:53,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2024-11-16 23:05:53,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 667. [2024-11-16 23:05:53,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 640 states have (on average 1.4078125) internal successors, (901), 657 states have internal predecessors, (901), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-16 23:05:53,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 944 transitions. [2024-11-16 23:05:53,227 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 944 transitions. Word has length 104 [2024-11-16 23:05:53,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:05:53,227 INFO L471 AbstractCegarLoop]: Abstraction has 667 states and 944 transitions. [2024-11-16 23:05:53,228 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 23:05:53,228 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 944 transitions. [2024-11-16 23:05:53,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-16 23:05:53,229 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:05:53,230 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:05:53,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 23:05:53,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:05:53,431 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:05:53,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:05:53,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1109639789, now seen corresponding path program 1 times [2024-11-16 23:05:53,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:05:53,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393503418] [2024-11-16 23:05:53,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:05:53,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:05:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:53,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-16 23:05:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:53,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-16 23:05:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:53,946 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 23:05:53,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:05:53,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393503418] [2024-11-16 23:05:53,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393503418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:05:53,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074846139] [2024-11-16 23:05:53,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:05:53,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:05:53,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:05:53,948 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:05:53,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 23:05:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:54,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 23:05:54,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:05:54,428 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 23:05:54,430 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 23:05:54,561 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 23:05:54,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074846139] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 23:05:54,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 23:05:54,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-16 23:05:54,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690429841] [2024-11-16 23:05:54,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 23:05:54,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 23:05:54,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:05:54,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 23:05:54,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-16 23:05:54,565 INFO L87 Difference]: Start difference. First operand 667 states and 944 transitions. Second operand has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 23:05:55,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:05:55,451 INFO L93 Difference]: Finished difference Result 1246 states and 1779 transitions. [2024-11-16 23:05:55,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 23:05:55,452 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 106 [2024-11-16 23:05:55,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:05:55,455 INFO L225 Difference]: With dead ends: 1246 [2024-11-16 23:05:55,456 INFO L226 Difference]: Without dead ends: 676 [2024-11-16 23:05:55,457 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2024-11-16 23:05:55,457 INFO L432 NwaCegarLoop]: 450 mSDtfsCounter, 62 mSDsluCounter, 3041 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 3491 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 23:05:55,458 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 3491 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 23:05:55,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2024-11-16 23:05:55,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 676. [2024-11-16 23:05:55,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 648 states have (on average 1.4089506172839505) internal successors, (913), 665 states have internal predecessors, (913), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (23), 7 states have call predecessors, (23), 21 states have call successors, (23) [2024-11-16 23:05:55,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 957 transitions. [2024-11-16 23:05:55,477 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 957 transitions. Word has length 106 [2024-11-16 23:05:55,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:05:55,477 INFO L471 AbstractCegarLoop]: Abstraction has 676 states and 957 transitions. [2024-11-16 23:05:55,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 23:05:55,477 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 957 transitions. [2024-11-16 23:05:55,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-16 23:05:55,478 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:05:55,479 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:05:55,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-16 23:05:55,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:05:55,680 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:05:55,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:05:55,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1359464241, now seen corresponding path program 2 times [2024-11-16 23:05:55,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:05:55,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031741669] [2024-11-16 23:05:55,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:05:55,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:05:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:56,115 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-16 23:05:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:56,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-16 23:05:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:56,223 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-16 23:05:56,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:05:56,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031741669] [2024-11-16 23:05:56,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031741669] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:05:56,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672199823] [2024-11-16 23:05:56,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 23:05:56,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:05:56,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:05:56,226 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:05:56,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 23:05:56,610 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-16 23:05:56,610 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 23:05:56,613 INFO L255 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 23:05:56,616 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:05:56,865 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-16 23:05:56,865 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 23:05:56,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672199823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:05:56,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 23:05:56,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-16 23:05:56,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933399439] [2024-11-16 23:05:56,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:05:56,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 23:05:56,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:05:56,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 23:05:56,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-11-16 23:05:56,869 INFO L87 Difference]: Start difference. First operand 676 states and 957 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:05:57,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:05:57,309 INFO L93 Difference]: Finished difference Result 1300 states and 1856 transitions. [2024-11-16 23:05:57,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 23:05:57,310 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 110 [2024-11-16 23:05:57,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:05:57,314 INFO L225 Difference]: With dead ends: 1300 [2024-11-16 23:05:57,314 INFO L226 Difference]: Without dead ends: 686 [2024-11-16 23:05:57,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-11-16 23:05:57,316 INFO L432 NwaCegarLoop]: 509 mSDtfsCounter, 12 mSDsluCounter, 2233 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2742 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 23:05:57,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2742 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 23:05:57,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2024-11-16 23:05:57,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 676. [2024-11-16 23:05:57,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 648 states have (on average 1.4089506172839505) internal successors, (913), 665 states have internal predecessors, (913), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (23), 7 states have call predecessors, (23), 21 states have call successors, (23) [2024-11-16 23:05:57,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 957 transitions. [2024-11-16 23:05:57,341 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 957 transitions. Word has length 110 [2024-11-16 23:05:57,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:05:57,342 INFO L471 AbstractCegarLoop]: Abstraction has 676 states and 957 transitions. [2024-11-16 23:05:57,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:05:57,342 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 957 transitions. [2024-11-16 23:05:57,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-16 23:05:57,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:05:57,343 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:05:57,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 23:05:57,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-16 23:05:57,544 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:05:57,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:05:57,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1853637828, now seen corresponding path program 1 times [2024-11-16 23:05:57,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:05:57,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196365131] [2024-11-16 23:05:57,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:05:57,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:05:57,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:57,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 23:05:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:57,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-16 23:05:58,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:58,006 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-16 23:05:58,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:05:58,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196365131] [2024-11-16 23:05:58,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196365131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:05:58,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:05:58,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-16 23:05:58,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691057191] [2024-11-16 23:05:58,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:05:58,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 23:05:58,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:05:58,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 23:05:58,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-16 23:05:58,008 INFO L87 Difference]: Start difference. First operand 676 states and 957 transitions. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 9 states have internal predecessors, (97), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:05:58,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:05:58,910 INFO L93 Difference]: Finished difference Result 1305 states and 1860 transitions. [2024-11-16 23:05:58,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 23:05:58,911 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 9 states have internal predecessors, (97), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 111 [2024-11-16 23:05:58,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:05:58,914 INFO L225 Difference]: With dead ends: 1305 [2024-11-16 23:05:58,914 INFO L226 Difference]: Without dead ends: 696 [2024-11-16 23:05:58,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-16 23:05:58,916 INFO L432 NwaCegarLoop]: 435 mSDtfsCounter, 76 mSDsluCounter, 2686 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 3121 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 23:05:58,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 3121 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 23:05:58,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2024-11-16 23:05:58,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 690. [2024-11-16 23:05:58,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 662 states have (on average 1.406344410876133) internal successors, (931), 679 states have internal predecessors, (931), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (23), 7 states have call predecessors, (23), 21 states have call successors, (23) [2024-11-16 23:05:58,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 975 transitions. [2024-11-16 23:05:58,936 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 975 transitions. Word has length 111 [2024-11-16 23:05:58,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:05:58,936 INFO L471 AbstractCegarLoop]: Abstraction has 690 states and 975 transitions. [2024-11-16 23:05:58,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 9 states have internal predecessors, (97), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:05:58,936 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 975 transitions. [2024-11-16 23:05:58,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-16 23:05:58,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:05:58,937 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:05:58,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 23:05:58,938 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:05:58,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:05:58,938 INFO L85 PathProgramCache]: Analyzing trace with hash 484236300, now seen corresponding path program 1 times [2024-11-16 23:05:58,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:05:58,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975772113] [2024-11-16 23:05:58,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:05:58,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:05:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:59,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-16 23:05:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:59,407 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-16 23:05:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:59,417 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-16 23:05:59,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:05:59,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975772113] [2024-11-16 23:05:59,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975772113] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:05:59,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619601286] [2024-11-16 23:05:59,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:05:59,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:05:59,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:05:59,420 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:05:59,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 23:05:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:05:59,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-16 23:05:59,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:06:00,000 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-16 23:06:00,000 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 23:06:00,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619601286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:06:00,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 23:06:00,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-16 23:06:00,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323217529] [2024-11-16 23:06:00,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:06:00,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 23:06:00,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:06:00,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 23:06:00,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-16 23:06:00,002 INFO L87 Difference]: Start difference. First operand 690 states and 975 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:06:00,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:06:00,526 INFO L93 Difference]: Finished difference Result 1330 states and 1891 transitions. [2024-11-16 23:06:00,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 23:06:00,527 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 111 [2024-11-16 23:06:00,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:06:00,531 INFO L225 Difference]: With dead ends: 1330 [2024-11-16 23:06:00,531 INFO L226 Difference]: Without dead ends: 714 [2024-11-16 23:06:00,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-11-16 23:06:00,533 INFO L432 NwaCegarLoop]: 510 mSDtfsCounter, 42 mSDsluCounter, 2709 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3219 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 23:06:00,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3219 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 23:06:00,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2024-11-16 23:06:00,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 700. [2024-11-16 23:06:00,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 672 states have (on average 1.4032738095238095) internal successors, (943), 689 states have internal predecessors, (943), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (23), 7 states have call predecessors, (23), 21 states have call successors, (23) [2024-11-16 23:06:00,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 987 transitions. [2024-11-16 23:06:00,552 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 987 transitions. Word has length 111 [2024-11-16 23:06:00,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:06:00,552 INFO L471 AbstractCegarLoop]: Abstraction has 700 states and 987 transitions. [2024-11-16 23:06:00,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:06:00,552 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 987 transitions. [2024-11-16 23:06:00,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-16 23:06:00,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:06:00,553 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:06:00,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 23:06:00,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:06:00,755 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:06:00,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:06:00,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1209585240, now seen corresponding path program 1 times [2024-11-16 23:06:00,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:06:00,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568534347] [2024-11-16 23:06:00,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:06:00,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:06:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:06:01,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-16 23:06:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:06:01,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-16 23:06:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:06:01,264 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-16 23:06:01,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:06:01,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568534347] [2024-11-16 23:06:01,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568534347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:06:01,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:06:01,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-16 23:06:01,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602589790] [2024-11-16 23:06:01,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:06:01,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 23:06:01,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:06:01,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 23:06:01,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-16 23:06:01,267 INFO L87 Difference]: Start difference. First operand 700 states and 987 transitions. Second operand has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 10 states have internal predecessors, (98), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:06:02,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:06:02,266 INFO L93 Difference]: Finished difference Result 1344 states and 1911 transitions. [2024-11-16 23:06:02,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 23:06:02,267 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 10 states have internal predecessors, (98), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 112 [2024-11-16 23:06:02,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:06:02,270 INFO L225 Difference]: With dead ends: 1344 [2024-11-16 23:06:02,270 INFO L226 Difference]: Without dead ends: 718 [2024-11-16 23:06:02,271 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-16 23:06:02,272 INFO L432 NwaCegarLoop]: 441 mSDtfsCounter, 82 mSDsluCounter, 3044 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 3485 SdHoareTripleChecker+Invalid, 1534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 23:06:02,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 3485 Invalid, 1534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1528 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 23:06:02,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2024-11-16 23:06:02,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 706. [2024-11-16 23:06:02,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 678 states have (on average 1.3997050147492625) internal successors, (949), 695 states have internal predecessors, (949), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (23), 7 states have call predecessors, (23), 21 states have call successors, (23) [2024-11-16 23:06:02,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 993 transitions. [2024-11-16 23:06:02,291 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 993 transitions. Word has length 112 [2024-11-16 23:06:02,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:06:02,292 INFO L471 AbstractCegarLoop]: Abstraction has 706 states and 993 transitions. [2024-11-16 23:06:02,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 10 states have internal predecessors, (98), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:06:02,292 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 993 transitions. [2024-11-16 23:06:02,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-16 23:06:02,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:06:02,293 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:06:02,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 23:06:02,293 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:06:02,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:06:02,294 INFO L85 PathProgramCache]: Analyzing trace with hash 2027749228, now seen corresponding path program 1 times [2024-11-16 23:06:02,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:06:02,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566603792] [2024-11-16 23:06:02,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:06:02,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:06:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:06:02,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-16 23:06:02,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:06:02,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-16 23:06:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:06:02,748 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-16 23:06:02,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:06:02,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566603792] [2024-11-16 23:06:02,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566603792] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:06:02,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592000615] [2024-11-16 23:06:02,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:06:02,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:06:02,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:06:02,751 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) [2024-11-16 23:06:02,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 23:06:03,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:06:03,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-16 23:06:03,246 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:06:03,367 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 23:06:03,367 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 23:06:11,641 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 8 refuted. 2 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 23:06:11,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592000615] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 23:06:11,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 23:06:11,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 8] total 20 [2024-11-16 23:06:11,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100168058] [2024-11-16 23:06:11,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 23:06:11,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-16 23:06:11,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:06:11,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-16 23:06:11,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=280, Unknown=2, NotChecked=0, Total=380 [2024-11-16 23:06:11,644 INFO L87 Difference]: Start difference. First operand 706 states and 993 transitions. Second operand has 20 states, 20 states have (on average 6.25) internal successors, (125), 19 states have internal predecessors, (125), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 23:06:13,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:06:13,259 INFO L93 Difference]: Finished difference Result 1315 states and 1868 transitions. [2024-11-16 23:06:13,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-16 23:06:13,261 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.25) internal successors, (125), 19 states have internal predecessors, (125), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2024-11-16 23:06:13,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:06:13,305 INFO L225 Difference]: With dead ends: 1315 [2024-11-16 23:06:13,305 INFO L226 Difference]: Without dead ends: 719 [2024-11-16 23:06:13,307 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=268, Invalid=660, Unknown=2, NotChecked=0, Total=930 [2024-11-16 23:06:13,308 INFO L432 NwaCegarLoop]: 439 mSDtfsCounter, 90 mSDsluCounter, 5121 mSDsCounter, 0 mSdLazyCounter, 1651 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 5560 SdHoareTripleChecker+Invalid, 1663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 23:06:13,308 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 5560 Invalid, 1663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1651 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 23:06:13,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2024-11-16 23:06:13,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 715. [2024-11-16 23:06:13,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 687 states have (on average 1.4017467248908297) internal successors, (963), 704 states have internal predecessors, (963), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-16 23:06:13,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1006 transitions. [2024-11-16 23:06:13,343 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1006 transitions. Word has length 112 [2024-11-16 23:06:13,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:06:13,344 INFO L471 AbstractCegarLoop]: Abstraction has 715 states and 1006 transitions. [2024-11-16 23:06:13,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.25) internal successors, (125), 19 states have internal predecessors, (125), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-16 23:06:13,344 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1006 transitions. [2024-11-16 23:06:13,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-16 23:06:13,345 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:06:13,346 INFO L215 NwaCegarLoop]: trace histogram [15, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:06:13,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 23:06:13,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:06:13,551 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:06:13,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:06:13,551 INFO L85 PathProgramCache]: Analyzing trace with hash -622428652, now seen corresponding path program 2 times [2024-11-16 23:06:13,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:06:13,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268668387] [2024-11-16 23:06:13,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:06:13,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:06:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:06:14,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-16 23:06:14,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:06:14,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 23:06:14,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:06:14,222 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-16 23:06:14,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:06:14,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268668387] [2024-11-16 23:06:14,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268668387] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:06:14,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969057181] [2024-11-16 23:06:14,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 23:06:14,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:06:14,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:06:14,226 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) [2024-11-16 23:06:14,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 23:06:14,759 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-16 23:06:14,760 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 23:06:14,764 INFO L255 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-16 23:06:14,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:06:15,019 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-11-16 23:06:15,019 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 23:06:15,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969057181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:06:15,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 23:06:15,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2024-11-16 23:06:15,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222892482] [2024-11-16 23:06:15,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:06:15,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 23:06:15,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:06:15,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 23:06:15,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-11-16 23:06:15,022 INFO L87 Difference]: Start difference. First operand 715 states and 1006 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:06:15,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:06:15,489 INFO L93 Difference]: Finished difference Result 1363 states and 1936 transitions. [2024-11-16 23:06:15,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 23:06:15,490 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 121 [2024-11-16 23:06:15,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:06:15,493 INFO L225 Difference]: With dead ends: 1363 [2024-11-16 23:06:15,493 INFO L226 Difference]: Without dead ends: 725 [2024-11-16 23:06:15,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-11-16 23:06:15,495 INFO L432 NwaCegarLoop]: 509 mSDtfsCounter, 10 mSDsluCounter, 2233 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2742 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 23:06:15,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2742 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 23:06:15,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2024-11-16 23:06:15,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 715. [2024-11-16 23:06:15,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 687 states have (on average 1.4017467248908297) internal successors, (963), 704 states have internal predecessors, (963), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-16 23:06:15,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1006 transitions. [2024-11-16 23:06:15,531 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1006 transitions. Word has length 121 [2024-11-16 23:06:15,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:06:15,532 INFO L471 AbstractCegarLoop]: Abstraction has 715 states and 1006 transitions. [2024-11-16 23:06:15,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:06:15,532 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1006 transitions. [2024-11-16 23:06:15,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-16 23:06:15,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:06:15,533 INFO L215 NwaCegarLoop]: trace histogram [15, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:06:15,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 23:06:15,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-16 23:06:15,738 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:06:15,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:06:15,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1467483864, now seen corresponding path program 1 times [2024-11-16 23:06:15,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:06:15,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485418634] [2024-11-16 23:06:15,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:06:15,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:06:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:06:16,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-16 23:06:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:06:16,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 23:06:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:06:16,494 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-16 23:06:16,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:06:16,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485418634] [2024-11-16 23:06:16,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485418634] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:06:16,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120295400] [2024-11-16 23:06:16,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:06:16,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:06:16,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:06:16,497 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:06:16,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 23:06:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:06:17,065 INFO L255 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-16 23:06:17,068 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:06:17,210 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-11-16 23:06:17,210 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 23:06:17,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120295400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:06:17,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 23:06:17,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2024-11-16 23:06:17,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142883267] [2024-11-16 23:06:17,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:06:17,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 23:06:17,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:06:17,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 23:06:17,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2024-11-16 23:06:17,212 INFO L87 Difference]: Start difference. First operand 715 states and 1006 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:06:17,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:06:17,570 INFO L93 Difference]: Finished difference Result 1362 states and 1932 transitions. [2024-11-16 23:06:17,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 23:06:17,571 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 121 [2024-11-16 23:06:17,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:06:17,575 INFO L225 Difference]: With dead ends: 1362 [2024-11-16 23:06:17,575 INFO L226 Difference]: Without dead ends: 729 [2024-11-16 23:06:17,576 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-11-16 23:06:17,577 INFO L432 NwaCegarLoop]: 499 mSDtfsCounter, 41 mSDsluCounter, 2247 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 23:06:17,577 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 2746 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 23:06:17,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2024-11-16 23:06:17,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 709. [2024-11-16 23:06:17,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 681 states have (on average 1.4023494860499266) internal successors, (955), 698 states have internal predecessors, (955), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-16 23:06:17,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 998 transitions. [2024-11-16 23:06:17,602 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 998 transitions. Word has length 121 [2024-11-16 23:06:17,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:06:17,602 INFO L471 AbstractCegarLoop]: Abstraction has 709 states and 998 transitions. [2024-11-16 23:06:17,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:06:17,602 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 998 transitions. [2024-11-16 23:06:17,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-16 23:06:17,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:06:17,603 INFO L215 NwaCegarLoop]: trace histogram [15, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:06:17,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-16 23:06:17,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-16 23:06:17,805 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:06:17,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:06:17,805 INFO L85 PathProgramCache]: Analyzing trace with hash -888597128, now seen corresponding path program 1 times [2024-11-16 23:06:17,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:06:17,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112952509] [2024-11-16 23:06:17,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:06:17,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:06:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:06:18,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-16 23:06:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:06:18,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 23:06:18,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:06:18,437 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-16 23:06:18,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:06:18,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112952509] [2024-11-16 23:06:18,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112952509] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:06:18,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50147498] [2024-11-16 23:06:18,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:06:18,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:06:18,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:06:18,440 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:06:18,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 23:06:19,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:06:19,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-16 23:06:19,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:06:20,165 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-11-16 23:06:20,166 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 23:06:20,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50147498] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:06:20,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 23:06:20,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2024-11-16 23:06:20,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331877753] [2024-11-16 23:06:20,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:06:20,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-16 23:06:20,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:06:20,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-16 23:06:20,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2024-11-16 23:06:20,168 INFO L87 Difference]: Start difference. First operand 709 states and 998 transitions. Second operand has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 states have internal predecessors, (98), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:06:22,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:06:22,117 INFO L93 Difference]: Finished difference Result 1354 states and 1919 transitions. [2024-11-16 23:06:22,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 23:06:22,118 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 states have internal predecessors, (98), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 121 [2024-11-16 23:06:22,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:06:22,122 INFO L225 Difference]: With dead ends: 1354 [2024-11-16 23:06:22,122 INFO L226 Difference]: Without dead ends: 719 [2024-11-16 23:06:22,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2024-11-16 23:06:22,124 INFO L432 NwaCegarLoop]: 508 mSDtfsCounter, 11 mSDsluCounter, 4003 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4511 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-16 23:06:22,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 4511 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-16 23:06:22,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2024-11-16 23:06:22,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 715. [2024-11-16 23:06:22,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 687 states have (on average 1.3988355167394468) internal successors, (961), 704 states have internal predecessors, (961), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-16 23:06:22,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1004 transitions. [2024-11-16 23:06:22,150 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1004 transitions. Word has length 121 [2024-11-16 23:06:22,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:06:22,151 INFO L471 AbstractCegarLoop]: Abstraction has 715 states and 1004 transitions. [2024-11-16 23:06:22,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 states have internal predecessors, (98), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:06:22,152 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1004 transitions. [2024-11-16 23:06:22,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-16 23:06:22,153 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:06:22,153 INFO L215 NwaCegarLoop]: trace histogram [15, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:06:22,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-16 23:06:22,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:06:22,354 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:06:22,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:06:22,355 INFO L85 PathProgramCache]: Analyzing trace with hash 219114216, now seen corresponding path program 1 times [2024-11-16 23:06:22,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:06:22,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584743789] [2024-11-16 23:06:22,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:06:22,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:06:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:06:34,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-16 23:06:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:06:34,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-16 23:06:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:06:35,238 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-16 23:06:35,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:06:35,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584743789] [2024-11-16 23:06:35,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584743789] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:06:35,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290892727] [2024-11-16 23:06:35,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:06:35,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:06:35,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:06:35,241 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:06:35,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-16 23:06:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:06:35,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-16 23:06:35,956 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:06:36,393 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 2 proven. 130 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-16 23:06:36,394 INFO L311 TraceCheckSpWp]: Computing backward predicates...