./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test2-2.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_FNV_test2-2.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 b879d991ca85089954916015c9838d386a5c85365dad0e09e537aeb772eaaaf8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 22:53:52,531 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 22:53:52,632 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 22:53:52,641 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 22:53:52,641 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 22:53:52,673 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 22:53:52,674 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 22:53:52,675 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 22:53:52,676 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 22:53:52,676 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 22:53:52,677 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 22:53:52,677 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 22:53:52,678 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 22:53:52,679 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 22:53:52,681 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 22:53:52,682 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 22:53:52,682 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 22:53:52,682 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 22:53:52,683 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 22:53:52,683 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 22:53:52,683 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 22:53:52,684 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 22:53:52,684 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 22:53:52,685 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 22:53:52,685 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 22:53:52,686 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 22:53:52,686 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 22:53:52,686 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 22:53:52,687 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 22:53:52,687 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 22:53:52,687 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 22:53:52,688 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 22:53:52,688 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 22:53:52,689 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 22:53:52,689 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 22:53:52,689 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 22:53:52,689 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 22:53:52,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 22:53:52,690 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 22:53:52,690 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 22:53:52,691 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 22:53:52,691 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 22:53:52,692 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b879d991ca85089954916015c9838d386a5c85365dad0e09e537aeb772eaaaf8 [2024-11-16 22:53:52,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 22:53:52,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 22:53:53,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 22:53:53,001 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 22:53:53,002 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 22:53:53,004 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test2-2.i [2024-11-16 22:53:54,493 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 22:53:54,831 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 22:53:54,832 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test2-2.i [2024-11-16 22:53:54,852 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3eb6e035c/97b4241f0eb54904a6ae38f1ab426a02/FLAGd1071dbbe [2024-11-16 22:53:55,075 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3eb6e035c/97b4241f0eb54904a6ae38f1ab426a02 [2024-11-16 22:53:55,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 22:53:55,081 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 22:53:55,083 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 22:53:55,084 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 22:53:55,089 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 22:53:55,089 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:53:55" (1/1) ... [2024-11-16 22:53:55,090 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44973f53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:55, skipping insertion in model container [2024-11-16 22:53:55,090 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:53:55" (1/1) ... [2024-11-16 22:53:55,144 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 22:53:55,559 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_FNV_test2-2.i[37019,37032] [2024-11-16 22:53:55,689 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_FNV_test2-2.i[47352,47365] [2024-11-16 22:53:55,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 22:53:55,735 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 22:53:55,777 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_FNV_test2-2.i[37019,37032] [2024-11-16 22:53:55,821 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_FNV_test2-2.i[47352,47365] [2024-11-16 22:53:55,829 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 22:53:55,877 INFO L204 MainTranslator]: Completed translation [2024-11-16 22:53:55,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:55 WrapperNode [2024-11-16 22:53:55,878 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 22:53:55,879 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 22:53:55,880 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 22:53:55,880 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 22:53:55,888 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:55" (1/1) ... [2024-11-16 22:53:55,972 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:55" (1/1) ... [2024-11-16 22:53:56,063 INFO L138 Inliner]: procedures = 208, calls = 278, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1433 [2024-11-16 22:53:56,064 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 22:53:56,064 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 22:53:56,065 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 22:53:56,065 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 22:53:56,076 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:55" (1/1) ... [2024-11-16 22:53:56,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:55" (1/1) ... [2024-11-16 22:53:56,087 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:55" (1/1) ... [2024-11-16 22:53:56,162 INFO L175 MemorySlicer]: Split 256 memory accesses to 3 slices as follows [2, 34, 220]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 4, 50]. [2024-11-16 22:53:56,162 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:55" (1/1) ... [2024-11-16 22:53:56,162 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:55" (1/1) ... [2024-11-16 22:53:56,198 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:55" (1/1) ... [2024-11-16 22:53:56,200 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:55" (1/1) ... [2024-11-16 22:53:56,205 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:55" (1/1) ... [2024-11-16 22:53:56,210 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:55" (1/1) ... [2024-11-16 22:53:56,223 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 22:53:56,225 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 22:53:56,227 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 22:53:56,228 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 22:53:56,229 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:55" (1/1) ... [2024-11-16 22:53:56,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 22:53:56,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:53:56,265 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 22:53:56,276 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 22:53:56,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-16 22:53:56,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-16 22:53:56,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-16 22:53:56,329 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-16 22:53:56,330 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-16 22:53:56,331 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-16 22:53:56,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 22:53:56,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-16 22:53:56,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-16 22:53:56,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-16 22:53:56,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 22:53:56,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 22:53:56,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 22:53:56,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 22:53:56,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-16 22:53:56,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-16 22:53:56,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 22:53:56,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 22:53:56,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 22:53:56,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 22:53:56,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 22:53:56,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-16 22:53:56,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-16 22:53:56,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-16 22:53:56,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 22:53:56,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 22:53:56,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 22:53:56,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 22:53:56,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 22:53:56,554 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 22:53:56,556 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 22:53:57,957 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L812: 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 22:53:58,186 INFO L? ?]: Removed 328 outVars from TransFormulas that were not future-live. [2024-11-16 22:53:58,186 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 22:53:58,259 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 22:53:58,259 INFO L336 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-16 22:53:58,260 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 10:53:58 BoogieIcfgContainer [2024-11-16 22:53:58,260 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 22:53:58,263 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 22:53:58,263 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 22:53:58,266 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 22:53:58,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:53:55" (1/3) ... [2024-11-16 22:53:58,267 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@efee146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:53:58, skipping insertion in model container [2024-11-16 22:53:58,268 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:53:55" (2/3) ... [2024-11-16 22:53:58,268 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@efee146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:53:58, skipping insertion in model container [2024-11-16 22:53:58,268 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 10:53:58" (3/3) ... [2024-11-16 22:53:58,269 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test2-2.i [2024-11-16 22:53:58,288 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 22:53:58,289 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 22:53:58,369 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 22:53:58,378 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;@410054e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 22:53:58,378 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-16 22:53:58,387 INFO L276 IsEmpty]: Start isEmpty. Operand has 420 states, 407 states have (on average 1.6167076167076166) internal successors, (658), 414 states have internal predecessors, (658), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-16 22:53:58,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-16 22:53:58,397 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:53:58,398 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:53:58,399 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:53:58,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:53:58,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1646035752, now seen corresponding path program 1 times [2024-11-16 22:53:58,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:53:58,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318705624] [2024-11-16 22:53:58,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:53:58,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:53:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:58,594 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 22:53:58,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:53:58,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318705624] [2024-11-16 22:53:58,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318705624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:53:58,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:53:58,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 22:53:58,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790910527] [2024-11-16 22:53:58,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:53:58,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 22:53:58,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:53:58,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 22:53:58,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 22:53:58,634 INFO L87 Difference]: Start difference. First operand has 420 states, 407 states have (on average 1.6167076167076166) internal successors, (658), 414 states have internal predecessors, (658), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) 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 22:53:58,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:53:58,797 INFO L93 Difference]: Finished difference Result 838 states and 1351 transitions. [2024-11-16 22:53:58,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 22:53:58,801 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 22:53:58,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:53:58,818 INFO L225 Difference]: With dead ends: 838 [2024-11-16 22:53:58,818 INFO L226 Difference]: Without dead ends: 381 [2024-11-16 22:53:58,826 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 22:53:58,832 INFO L432 NwaCegarLoop]: 563 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 22:53:58,834 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 563 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 22:53:58,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2024-11-16 22:53:58,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2024-11-16 22:53:58,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 369 states have (on average 1.4552845528455285) internal successors, (537), 375 states have internal predecessors, (537), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-16 22:53:58,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 553 transitions. [2024-11-16 22:53:58,896 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 553 transitions. Word has length 9 [2024-11-16 22:53:58,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:53:58,897 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 553 transitions. [2024-11-16 22:53:58,897 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 22:53:58,897 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 553 transitions. [2024-11-16 22:53:58,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-16 22:53:58,902 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:53:58,903 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 22:53:58,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 22:53:58,903 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:53:58,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:53:58,904 INFO L85 PathProgramCache]: Analyzing trace with hash -891390850, now seen corresponding path program 1 times [2024-11-16 22:53:58,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:53:58,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378435051] [2024-11-16 22:53:58,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:53:58,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:53:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:53:59,372 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 22:53:59,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:53:59,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378435051] [2024-11-16 22:53:59,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378435051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:53:59,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:53:59,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 22:53:59,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633533378] [2024-11-16 22:53:59,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:53:59,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 22:53:59,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:53:59,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 22:53:59,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 22:53:59,376 INFO L87 Difference]: Start difference. First operand 381 states and 553 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 22:53:59,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:53:59,702 INFO L93 Difference]: Finished difference Result 927 states and 1356 transitions. [2024-11-16 22:53:59,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 22:53:59,703 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 22:53:59,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:53:59,707 INFO L225 Difference]: With dead ends: 927 [2024-11-16 22:53:59,708 INFO L226 Difference]: Without dead ends: 749 [2024-11-16 22:53:59,709 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 22:53:59,710 INFO L432 NwaCegarLoop]: 535 mSDtfsCounter, 522 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 22:53:59,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 1552 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 22:53:59,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2024-11-16 22:53:59,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 383. [2024-11-16 22:53:59,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 371 states have (on average 1.4528301886792452) internal successors, (539), 377 states have internal predecessors, (539), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-16 22:53:59,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 555 transitions. [2024-11-16 22:53:59,754 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 555 transitions. Word has length 65 [2024-11-16 22:53:59,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:53:59,757 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 555 transitions. [2024-11-16 22:53:59,757 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 22:53:59,758 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 555 transitions. [2024-11-16 22:53:59,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-16 22:53:59,767 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:53:59,768 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:53:59,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 22:53:59,769 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:53:59,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:53:59,769 INFO L85 PathProgramCache]: Analyzing trace with hash 2131048353, now seen corresponding path program 1 times [2024-11-16 22:53:59,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:53:59,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449298982] [2024-11-16 22:53:59,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:53:59,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:53:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:00,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 22:54:00,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:54:00,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449298982] [2024-11-16 22:54:00,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449298982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:54:00,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:54:00,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 22:54:00,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694170727] [2024-11-16 22:54:00,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:54:00,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 22:54:00,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:54:00,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 22:54:00,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 22:54:00,196 INFO L87 Difference]: Start difference. First operand 383 states and 555 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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 22:54:00,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:54:00,350 INFO L93 Difference]: Finished difference Result 720 states and 1040 transitions. [2024-11-16 22:54:00,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 22:54:00,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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 142 [2024-11-16 22:54:00,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:54:00,354 INFO L225 Difference]: With dead ends: 720 [2024-11-16 22:54:00,355 INFO L226 Difference]: Without dead ends: 341 [2024-11-16 22:54:00,355 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 22:54:00,356 INFO L432 NwaCegarLoop]: 419 mSDtfsCounter, 30 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 22:54:00,357 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1237 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 22:54:00,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2024-11-16 22:54:00,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2024-11-16 22:54:00,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 329 states have (on average 1.4042553191489362) internal successors, (462), 335 states have internal predecessors, (462), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-16 22:54:00,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 478 transitions. [2024-11-16 22:54:00,381 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 478 transitions. Word has length 142 [2024-11-16 22:54:00,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:54:00,381 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 478 transitions. [2024-11-16 22:54:00,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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 22:54:00,382 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 478 transitions. [2024-11-16 22:54:00,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-16 22:54:00,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:54:00,384 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:54:00,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 22:54:00,384 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:54:00,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:54:00,385 INFO L85 PathProgramCache]: Analyzing trace with hash -57827526, now seen corresponding path program 1 times [2024-11-16 22:54:00,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:54:00,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897488749] [2024-11-16 22:54:00,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:54:00,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:54:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:00,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 22:54:00,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:54:00,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897488749] [2024-11-16 22:54:00,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897488749] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:54:00,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:54:00,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 22:54:00,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135223112] [2024-11-16 22:54:00,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:54:00,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 22:54:00,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:54:00,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 22:54:00,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 22:54:00,587 INFO L87 Difference]: Start difference. First operand 341 states and 478 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 22:54:00,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:54:00,750 INFO L93 Difference]: Finished difference Result 915 states and 1298 transitions. [2024-11-16 22:54:00,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 22:54:00,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 142 [2024-11-16 22:54:00,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:54:00,754 INFO L225 Difference]: With dead ends: 915 [2024-11-16 22:54:00,755 INFO L226 Difference]: Without dead ends: 578 [2024-11-16 22:54:00,756 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 22:54:00,757 INFO L432 NwaCegarLoop]: 617 mSDtfsCounter, 272 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 22:54:00,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 1041 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 22:54:00,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2024-11-16 22:54:00,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 576. [2024-11-16 22:54:00,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 559 states have (on average 1.4221824686940967) internal successors, (795), 570 states have internal predecessors, (795), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-16 22:54:00,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 821 transitions. [2024-11-16 22:54:00,780 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 821 transitions. Word has length 142 [2024-11-16 22:54:00,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:54:00,783 INFO L471 AbstractCegarLoop]: Abstraction has 576 states and 821 transitions. [2024-11-16 22:54:00,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 22:54:00,783 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 821 transitions. [2024-11-16 22:54:00,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-16 22:54:00,788 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:54:00,789 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:54:00,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 22:54:00,789 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:54:00,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:54:00,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1109893489, now seen corresponding path program 1 times [2024-11-16 22:54:00,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:54:00,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154714531] [2024-11-16 22:54:00,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:54:00,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:54:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:01,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 22:54:01,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:01,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-16 22:54:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:01,226 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 22:54:01,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:54:01,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154714531] [2024-11-16 22:54:01,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154714531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:54:01,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:54:01,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 22:54:01,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328803202] [2024-11-16 22:54:01,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:54:01,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 22:54:01,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:54:01,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 22:54:01,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 22:54:01,231 INFO L87 Difference]: Start difference. First operand 576 states and 821 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:54:01,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:54:01,552 INFO L93 Difference]: Finished difference Result 819 states and 1180 transitions. [2024-11-16 22:54:01,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 22:54:01,553 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 157 [2024-11-16 22:54:01,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:54:01,559 INFO L225 Difference]: With dead ends: 819 [2024-11-16 22:54:01,559 INFO L226 Difference]: Without dead ends: 495 [2024-11-16 22:54:01,560 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 22:54:01,562 INFO L432 NwaCegarLoop]: 338 mSDtfsCounter, 38 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 22:54:01,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1259 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 22:54:01,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2024-11-16 22:54:01,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 492. [2024-11-16 22:54:01,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 475 states have (on average 1.3494736842105264) internal successors, (641), 486 states have internal predecessors, (641), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-16 22:54:01,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 667 transitions. [2024-11-16 22:54:01,586 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 667 transitions. Word has length 157 [2024-11-16 22:54:01,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:54:01,586 INFO L471 AbstractCegarLoop]: Abstraction has 492 states and 667 transitions. [2024-11-16 22:54:01,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:54:01,587 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 667 transitions. [2024-11-16 22:54:01,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-16 22:54:01,588 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:54:01,589 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:54:01,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 22:54:01,589 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:54:01,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:54:01,589 INFO L85 PathProgramCache]: Analyzing trace with hash 2050792903, now seen corresponding path program 1 times [2024-11-16 22:54:01,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:54:01,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574647876] [2024-11-16 22:54:01,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:54:01,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:54:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:01,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 22:54:01,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:01,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-16 22:54:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:01,901 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 22:54:01,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:54:01,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574647876] [2024-11-16 22:54:01,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574647876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:54:01,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:54:01,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 22:54:01,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134977331] [2024-11-16 22:54:01,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:54:01,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 22:54:01,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:54:01,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 22:54:01,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 22:54:01,903 INFO L87 Difference]: Start difference. First operand 492 states and 667 transitions. Second operand has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:54:02,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:54:02,321 INFO L93 Difference]: Finished difference Result 790 states and 1070 transitions. [2024-11-16 22:54:02,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 22:54:02,322 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 157 [2024-11-16 22:54:02,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:54:02,325 INFO L225 Difference]: With dead ends: 790 [2024-11-16 22:54:02,325 INFO L226 Difference]: Without dead ends: 390 [2024-11-16 22:54:02,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 22:54:02,330 INFO L432 NwaCegarLoop]: 421 mSDtfsCounter, 581 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 22:54:02,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 937 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 22:54:02,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2024-11-16 22:54:02,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 387. [2024-11-16 22:54:02,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 375 states have (on average 1.3386666666666667) internal successors, (502), 381 states have internal predecessors, (502), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-16 22:54:02,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 518 transitions. [2024-11-16 22:54:02,348 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 518 transitions. Word has length 157 [2024-11-16 22:54:02,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:54:02,349 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 518 transitions. [2024-11-16 22:54:02,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.0) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:54:02,349 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 518 transitions. [2024-11-16 22:54:02,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-16 22:54:02,351 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:54:02,351 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:54:02,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 22:54:02,352 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:54:02,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:54:02,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1069977631, now seen corresponding path program 1 times [2024-11-16 22:54:02,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:54:02,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23455679] [2024-11-16 22:54:02,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:54:02,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:54:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:02,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 22:54:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:02,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-16 22:54:02,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:02,633 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 22:54:02,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:54:02,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23455679] [2024-11-16 22:54:02,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23455679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 22:54:02,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 22:54:02,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 22:54:02,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085754654] [2024-11-16 22:54:02,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 22:54:02,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 22:54:02,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:54:02,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 22:54:02,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 22:54:02,637 INFO L87 Difference]: Start difference. First operand 387 states and 518 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:54:02,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:54:02,922 INFO L93 Difference]: Finished difference Result 525 states and 707 transitions. [2024-11-16 22:54:02,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 22:54:02,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 168 [2024-11-16 22:54:02,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:54:02,926 INFO L225 Difference]: With dead ends: 525 [2024-11-16 22:54:02,926 INFO L226 Difference]: Without dead ends: 390 [2024-11-16 22:54:02,926 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 22:54:02,927 INFO L432 NwaCegarLoop]: 351 mSDtfsCounter, 9 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 22:54:02,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 962 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 22:54:02,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2024-11-16 22:54:02,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 387. [2024-11-16 22:54:02,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 375 states have (on average 1.3306666666666667) internal successors, (499), 381 states have internal predecessors, (499), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-16 22:54:02,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 515 transitions. [2024-11-16 22:54:02,940 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 515 transitions. Word has length 168 [2024-11-16 22:54:02,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:54:02,941 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 515 transitions. [2024-11-16 22:54:02,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 22:54:02,941 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 515 transitions. [2024-11-16 22:54:02,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-16 22:54:02,943 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:54:02,943 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:54:02,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 22:54:02,944 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:54:02,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:54:02,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1075552547, now seen corresponding path program 1 times [2024-11-16 22:54:02,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:54:02,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788046611] [2024-11-16 22:54:02,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:54:02,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:54:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:03,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 22:54:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:03,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-16 22:54:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:03,748 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 22:54:03,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:54:03,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788046611] [2024-11-16 22:54:03,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788046611] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:54:03,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743123512] [2024-11-16 22:54:03,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:54:03,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:54:03,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:54:03,751 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 22:54:03,753 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 22:54:04,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:04,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 22:54:04,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:54:04,170 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 22:54:04,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-16 22:54:04,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-16 22:54:04,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 22:54:04,479 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 22:54:04,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 22:54:04,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743123512] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 22:54:04,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 22:54:04,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 5] total 12 [2024-11-16 22:54:04,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024256969] [2024-11-16 22:54:04,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 22:54:04,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 22:54:04,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:54:04,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 22:54:04,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-16 22:54:04,727 INFO L87 Difference]: Start difference. First operand 387 states and 515 transitions. Second operand has 12 states, 12 states have (on average 27.666666666666668) internal successors, (332), 11 states have internal predecessors, (332), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-16 22:54:05,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:54:05,599 INFO L93 Difference]: Finished difference Result 1289 states and 1728 transitions. [2024-11-16 22:54:05,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 22:54:05,600 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 27.666666666666668) internal successors, (332), 11 states have internal predecessors, (332), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 168 [2024-11-16 22:54:05,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:54:05,606 INFO L225 Difference]: With dead ends: 1289 [2024-11-16 22:54:05,607 INFO L226 Difference]: Without dead ends: 1153 [2024-11-16 22:54:05,609 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 333 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2024-11-16 22:54:05,611 INFO L432 NwaCegarLoop]: 379 mSDtfsCounter, 1324 mSDsluCounter, 3018 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 3397 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 22:54:05,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1342 Valid, 3397 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 22:54:05,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2024-11-16 22:54:05,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 739. [2024-11-16 22:54:05,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 723 states have (on average 1.3291839557399723) internal successors, (961), 729 states have internal predecessors, (961), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-16 22:54:05,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 983 transitions. [2024-11-16 22:54:05,648 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 983 transitions. Word has length 168 [2024-11-16 22:54:05,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:54:05,648 INFO L471 AbstractCegarLoop]: Abstraction has 739 states and 983 transitions. [2024-11-16 22:54:05,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.666666666666668) internal successors, (332), 11 states have internal predecessors, (332), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-16 22:54:05,649 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 983 transitions. [2024-11-16 22:54:05,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2024-11-16 22:54:05,655 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:54:05,656 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:54:05,679 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 22:54:05,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:54:05,858 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:54:05,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:54:05,858 INFO L85 PathProgramCache]: Analyzing trace with hash -210267485, now seen corresponding path program 1 times [2024-11-16 22:54:05,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:54:05,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715960830] [2024-11-16 22:54:05,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:54:05,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 22:54:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:09,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 22:54:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:09,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-16 22:54:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:09,970 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 464 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 22:54:09,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 22:54:09,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715960830] [2024-11-16 22:54:09,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715960830] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 22:54:09,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936304420] [2024-11-16 22:54:09,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:54:09,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 22:54:09,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 22:54:09,975 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 22:54:09,976 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 22:54:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 22:54:10,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 1904 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 22:54:10,783 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 22:54:10,791 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 22:54:11,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-16 22:54:11,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-16 22:54:11,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-16 22:54:11,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-16 22:54:11,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-16 22:54:11,410 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 464 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 22:54:11,411 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 22:54:12,009 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 464 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 22:54:12,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936304420] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 22:54:12,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 22:54:12,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 8] total 21 [2024-11-16 22:54:12,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101990379] [2024-11-16 22:54:12,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 22:54:12,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-16 22:54:12,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 22:54:12,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-16 22:54:12,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=274, Unknown=0, NotChecked=0, Total=420 [2024-11-16 22:54:12,014 INFO L87 Difference]: Start difference. First operand 739 states and 983 transitions. Second operand has 21 states, 21 states have (on average 38.095238095238095) internal successors, (800), 20 states have internal predecessors, (800), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-16 22:54:13,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 22:54:13,471 INFO L93 Difference]: Finished difference Result 2552 states and 3432 transitions. [2024-11-16 22:54:13,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-16 22:54:13,476 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 38.095238095238095) internal successors, (800), 20 states have internal predecessors, (800), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 399 [2024-11-16 22:54:13,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 22:54:13,488 INFO L225 Difference]: With dead ends: 2552 [2024-11-16 22:54:13,489 INFO L226 Difference]: Without dead ends: 2416 [2024-11-16 22:54:13,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 823 GetRequests, 794 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=229, Invalid=527, Unknown=0, NotChecked=0, Total=756 [2024-11-16 22:54:13,493 INFO L432 NwaCegarLoop]: 379 mSDtfsCounter, 7026 mSDsluCounter, 4172 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7071 SdHoareTripleChecker+Valid, 4551 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 22:54:13,493 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7071 Valid, 4551 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 22:54:13,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2024-11-16 22:54:13,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 1615. [2024-11-16 22:54:13,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1593 states have (on average 1.330194601381042) internal successors, (2119), 1599 states have internal predecessors, (2119), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-16 22:54:13,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 2153 transitions. [2024-11-16 22:54:13,561 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 2153 transitions. Word has length 399 [2024-11-16 22:54:13,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 22:54:13,562 INFO L471 AbstractCegarLoop]: Abstraction has 1615 states and 2153 transitions. [2024-11-16 22:54:13,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 38.095238095238095) internal successors, (800), 20 states have internal predecessors, (800), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-16 22:54:13,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 2153 transitions. [2024-11-16 22:54:13,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 862 [2024-11-16 22:54:13,583 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 22:54:13,584 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 22:54:13,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 22:54:13,784 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,SelfDestructingSolverStorable8 [2024-11-16 22:54:13,786 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 22:54:13,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 22:54:13,786 INFO L85 PathProgramCache]: Analyzing trace with hash 780447075, now seen corresponding path program 2 times [2024-11-16 22:54:13,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 22:54:13,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682163923] [2024-11-16 22:54:13,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 22:54:13,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms