./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f 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_SFH_test4-2.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 64683904124af3c899dbc8dc5465d8741c0ff10567af23b7315c834db1157458 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 12:03:45,084 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 12:03:45,166 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 12:03:45,171 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 12:03:45,172 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 12:03:45,200 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 12:03:45,201 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 12:03:45,201 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 12:03:45,202 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 12:03:45,202 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 12:03:45,203 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 12:03:45,203 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 12:03:45,204 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 12:03:45,204 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 12:03:45,205 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 12:03:45,205 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 12:03:45,205 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 12:03:45,206 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 12:03:45,206 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 12:03:45,206 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 12:03:45,207 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 12:03:45,207 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 12:03:45,208 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 12:03:45,208 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 12:03:45,208 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 12:03:45,209 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 12:03:45,209 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 12:03:45,209 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 12:03:45,210 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 12:03:45,210 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 12:03:45,210 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 12:03:45,210 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 12:03:45,211 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 12:03:45,211 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 12:03:45,211 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 12:03:45,212 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 12:03:45,212 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 12:03:45,213 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 12:03:45,222 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 12:03:45,222 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 12:03:45,222 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 12:03:45,223 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 12:03:45,223 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64683904124af3c899dbc8dc5465d8741c0ff10567af23b7315c834db1157458 [2024-11-12 12:03:45,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 12:03:45,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 12:03:45,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 12:03:45,488 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 12:03:45,488 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 12:03:45,489 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i [2024-11-12 12:03:46,980 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 12:03:47,308 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 12:03:47,308 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test4-2.i [2024-11-12 12:03:47,326 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75e13cd2b/43670dcf93b6482fad0a688f24105428/FLAG1630443cf [2024-11-12 12:03:47,339 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75e13cd2b/43670dcf93b6482fad0a688f24105428 [2024-11-12 12:03:47,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 12:03:47,343 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 12:03:47,345 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 12:03:47,345 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 12:03:47,349 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 12:03:47,350 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:03:47" (1/1) ... [2024-11-12 12:03:47,350 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41cb5462 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:03:47, skipping insertion in model container [2024-11-12 12:03:47,351 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:03:47" (1/1) ... [2024-11-12 12:03:47,403 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 12:03:47,827 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_SFH_test4-2.i[33021,33034] [2024-11-12 12:03:48,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 12:03:48,019 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 12:03:48,052 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_SFH_test4-2.i[33021,33034] [2024-11-12 12:03:48,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 12:03:48,149 INFO L204 MainTranslator]: Completed translation [2024-11-12 12:03:48,149 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:03:48 WrapperNode [2024-11-12 12:03:48,150 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 12:03:48,151 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 12:03:48,152 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 12:03:48,152 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 12:03:48,159 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:03:48" (1/1) ... [2024-11-12 12:03:48,210 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:03:48" (1/1) ... [2024-11-12 12:03:48,294 INFO L138 Inliner]: procedures = 176, calls = 386, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1752 [2024-11-12 12:03:48,295 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 12:03:48,296 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 12:03:48,297 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 12:03:48,297 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 12:03:48,307 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:03:48" (1/1) ... [2024-11-12 12:03:48,307 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:03:48" (1/1) ... [2024-11-12 12:03:48,316 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:03:48" (1/1) ... [2024-11-12 12:03:48,461 INFO L175 MemorySlicer]: Split 357 memory accesses to 2 slices as follows [2, 355]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 90 writes are split as follows [0, 90]. [2024-11-12 12:03:48,462 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:03:48" (1/1) ... [2024-11-12 12:03:48,462 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:03:48" (1/1) ... [2024-11-12 12:03:48,597 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:03:48" (1/1) ... [2024-11-12 12:03:48,618 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:03:48" (1/1) ... [2024-11-12 12:03:48,628 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:03:48" (1/1) ... [2024-11-12 12:03:48,643 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:03:48" (1/1) ... [2024-11-12 12:03:48,666 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 12:03:48,668 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 12:03:48,669 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 12:03:48,669 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 12:03:48,671 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:03:48" (1/1) ... [2024-11-12 12:03:48,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 12:03:48,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 12:03:48,714 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) [2024-11-12 12:03:48,718 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 [2024-11-12 12:03:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 12:03:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 12:03:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-12 12:03:48,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-12 12:03:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 12:03:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 12:03:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-12 12:03:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-12 12:03:48,781 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-12 12:03:48,781 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-12 12:03:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 12:03:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 12:03:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-12 12:03:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-12 12:03:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-12 12:03:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-12 12:03:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-12 12:03:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 12:03:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 12:03:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 12:03:48,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 12:03:49,023 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 12:03:49,025 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 12:03:50,858 INFO L? ?]: Removed 414 outVars from TransFormulas that were not future-live. [2024-11-12 12:03:50,859 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 12:03:50,887 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 12:03:50,890 INFO L316 CfgBuilder]: Removed 69 assume(true) statements. [2024-11-12 12:03:50,890 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:03:50 BoogieIcfgContainer [2024-11-12 12:03:50,891 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 12:03:50,893 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 12:03:50,893 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 12:03:50,896 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 12:03:50,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:03:47" (1/3) ... [2024-11-12 12:03:50,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10db63be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:03:50, skipping insertion in model container [2024-11-12 12:03:50,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:03:48" (2/3) ... [2024-11-12 12:03:50,898 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10db63be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:03:50, skipping insertion in model container [2024-11-12 12:03:50,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:03:50" (3/3) ... [2024-11-12 12:03:50,899 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test4-2.i [2024-11-12 12:03:50,916 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 12:03:50,917 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-12 12:03:51,004 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 12:03:51,011 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;@37159f46, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 12:03:51,011 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-12 12:03:51,019 INFO L276 IsEmpty]: Start isEmpty. Operand has 460 states, 440 states have (on average 1.6181818181818182) internal successors, (712), 451 states have internal predecessors, (712), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-12 12:03:51,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-12 12:03:51,025 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:03:51,026 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:03:51,026 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 12:03:51,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:03:51,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1160532636, now seen corresponding path program 1 times [2024-11-12 12:03:51,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:03:51,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301223275] [2024-11-12 12:03:51,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:03:51,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:03:51,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:03:51,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 12:03:51,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:03:51,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301223275] [2024-11-12 12:03:51,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301223275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:03:51,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:03:51,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 12:03:51,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338142401] [2024-11-12 12:03:51,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:03:51,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 12:03:51,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:03:51,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 12:03:51,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 12:03:51,312 INFO L87 Difference]: Start difference. First operand has 460 states, 440 states have (on average 1.6181818181818182) internal successors, (712), 451 states have internal predecessors, (712), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 12:03:51,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 12:03:51,459 INFO L93 Difference]: Finished difference Result 1302 states and 2121 transitions. [2024-11-12 12:03:51,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 12:03:51,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-12 12:03:51,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 12:03:51,492 INFO L225 Difference]: With dead ends: 1302 [2024-11-12 12:03:51,492 INFO L226 Difference]: Without dead ends: 805 [2024-11-12 12:03:51,501 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 12:03:51,505 INFO L435 NwaCegarLoop]: 750 mSDtfsCounter, 545 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 12:03:51,507 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 1411 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 12:03:51,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2024-11-12 12:03:51,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 422. [2024-11-12 12:03:51,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 403 states have (on average 1.4491315136476426) internal successors, (584), 413 states have internal predecessors, (584), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-12 12:03:51,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 616 transitions. [2024-11-12 12:03:51,583 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 616 transitions. Word has length 10 [2024-11-12 12:03:51,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 12:03:51,584 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 616 transitions. [2024-11-12 12:03:51,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 12:03:51,584 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 616 transitions. [2024-11-12 12:03:51,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-12 12:03:51,593 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:03:51,593 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:03:51,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 12:03:51,594 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 12:03:51,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:03:51,595 INFO L85 PathProgramCache]: Analyzing trace with hash 478627325, now seen corresponding path program 1 times [2024-11-12 12:03:51,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:03:51,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231413803] [2024-11-12 12:03:51,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:03:51,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:03:51,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:03:52,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 12:03:52,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:03:52,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231413803] [2024-11-12 12:03:52,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231413803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:03:52,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:03:52,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 12:03:52,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052468610] [2024-11-12 12:03:52,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:03:52,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 12:03:52,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:03:52,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 12:03:52,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 12:03:52,253 INFO L87 Difference]: Start difference. First operand 422 states and 616 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 12:03:52,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 12:03:52,377 INFO L93 Difference]: Finished difference Result 844 states and 1232 transitions. [2024-11-12 12:03:52,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 12:03:52,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2024-11-12 12:03:52,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 12:03:52,381 INFO L225 Difference]: With dead ends: 844 [2024-11-12 12:03:52,382 INFO L226 Difference]: Without dead ends: 425 [2024-11-12 12:03:52,385 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-12 12:03:52,386 INFO L435 NwaCegarLoop]: 587 mSDtfsCounter, 105 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 12:03:52,387 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1668 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 12:03:52,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2024-11-12 12:03:52,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 422. [2024-11-12 12:03:52,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 403 states have (on average 1.4317617866004964) internal successors, (577), 413 states have internal predecessors, (577), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-12 12:03:52,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 609 transitions. [2024-11-12 12:03:52,429 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 609 transitions. Word has length 156 [2024-11-12 12:03:52,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 12:03:52,429 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 609 transitions. [2024-11-12 12:03:52,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 12:03:52,430 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 609 transitions. [2024-11-12 12:03:52,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-12 12:03:52,437 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:03:52,437 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:03:52,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 12:03:52,438 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 12:03:52,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:03:52,438 INFO L85 PathProgramCache]: Analyzing trace with hash -94439567, now seen corresponding path program 1 times [2024-11-12 12:03:52,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:03:52,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176496419] [2024-11-12 12:03:52,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:03:52,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:03:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:03:52,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 12:03:52,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:03:52,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176496419] [2024-11-12 12:03:52,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176496419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:03:52,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:03:52,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 12:03:52,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461577388] [2024-11-12 12:03:52,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:03:52,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 12:03:52,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:03:52,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 12:03:52,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 12:03:52,735 INFO L87 Difference]: Start difference. First operand 422 states and 609 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 12:03:52,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 12:03:52,802 INFO L93 Difference]: Finished difference Result 970 states and 1404 transitions. [2024-11-12 12:03:52,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 12:03:52,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2024-11-12 12:03:52,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 12:03:52,808 INFO L225 Difference]: With dead ends: 970 [2024-11-12 12:03:52,810 INFO L226 Difference]: Without dead ends: 551 [2024-11-12 12:03:52,811 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 12:03:52,813 INFO L435 NwaCegarLoop]: 607 mSDtfsCounter, 134 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 12:03:52,815 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1207 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 12:03:52,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2024-11-12 12:03:52,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 551. [2024-11-12 12:03:52,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 532 states have (on average 1.4379699248120301) internal successors, (765), 542 states have internal predecessors, (765), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-12 12:03:52,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 797 transitions. [2024-11-12 12:03:52,836 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 797 transitions. Word has length 156 [2024-11-12 12:03:52,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 12:03:52,838 INFO L471 AbstractCegarLoop]: Abstraction has 551 states and 797 transitions. [2024-11-12 12:03:52,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 12:03:52,838 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 797 transitions. [2024-11-12 12:03:52,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-12 12:03:52,842 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:03:52,842 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:03:52,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 12:03:52,843 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 12:03:52,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:03:52,845 INFO L85 PathProgramCache]: Analyzing trace with hash 957115648, now seen corresponding path program 1 times [2024-11-12 12:03:52,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:03:52,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007878268] [2024-11-12 12:03:52,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:03:52,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:03:52,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:03:53,295 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-12 12:03:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:03:53,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-12 12:03:53,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:03:53,308 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 12:03:53,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:03:53,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007878268] [2024-11-12 12:03:53,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007878268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:03:53,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:03:53,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 12:03:53,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655268590] [2024-11-12 12:03:53,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:03:53,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 12:03:53,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:03:53,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 12:03:53,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 12:03:53,315 INFO L87 Difference]: Start difference. First operand 551 states and 797 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 12:03:53,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 12:03:53,793 INFO L93 Difference]: Finished difference Result 931 states and 1346 transitions. [2024-11-12 12:03:53,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 12:03:53,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 171 [2024-11-12 12:03:53,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 12:03:53,797 INFO L225 Difference]: With dead ends: 931 [2024-11-12 12:03:53,797 INFO L226 Difference]: Without dead ends: 512 [2024-11-12 12:03:53,799 INFO L434 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 [2024-11-12 12:03:53,799 INFO L435 NwaCegarLoop]: 497 mSDtfsCounter, 44 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 1843 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-12 12:03:53,800 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 1843 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-12 12:03:53,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2024-11-12 12:03:53,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 509. [2024-11-12 12:03:53,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 490 states have (on average 1.4040816326530612) internal successors, (688), 500 states have internal predecessors, (688), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-12 12:03:53,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 720 transitions. [2024-11-12 12:03:53,822 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 720 transitions. Word has length 171 [2024-11-12 12:03:53,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 12:03:53,824 INFO L471 AbstractCegarLoop]: Abstraction has 509 states and 720 transitions. [2024-11-12 12:03:53,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 12:03:53,825 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 720 transitions. [2024-11-12 12:03:53,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-12 12:03:53,827 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:03:53,828 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:03:53,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 12:03:53,828 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 12:03:53,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:03:53,829 INFO L85 PathProgramCache]: Analyzing trace with hash -791127020, now seen corresponding path program 1 times [2024-11-12 12:03:53,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:03:53,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688799879] [2024-11-12 12:03:53,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:03:53,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:03:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:03:54,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-12 12:03:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:03:54,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-12 12:03:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:03:54,127 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 12:03:54,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:03:54,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688799879] [2024-11-12 12:03:54,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688799879] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:03:54,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:03:54,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 12:03:54,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941798973] [2024-11-12 12:03:54,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:03:54,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 12:03:54,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:03:54,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 12:03:54,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 12:03:54,131 INFO L87 Difference]: Start difference. First operand 509 states and 720 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 12:03:54,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 12:03:54,599 INFO L93 Difference]: Finished difference Result 883 states and 1252 transitions. [2024-11-12 12:03:54,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 12:03:54,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 171 [2024-11-12 12:03:54,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 12:03:54,603 INFO L225 Difference]: With dead ends: 883 [2024-11-12 12:03:54,603 INFO L226 Difference]: Without dead ends: 506 [2024-11-12 12:03:54,604 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-12 12:03:54,605 INFO L435 NwaCegarLoop]: 499 mSDtfsCounter, 17 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-12 12:03:54,605 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1850 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-12 12:03:54,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2024-11-12 12:03:54,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 503. [2024-11-12 12:03:54,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 484 states have (on average 1.4008264462809918) internal successors, (678), 494 states have internal predecessors, (678), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-12 12:03:54,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 710 transitions. [2024-11-12 12:03:54,620 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 710 transitions. Word has length 171 [2024-11-12 12:03:54,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 12:03:54,621 INFO L471 AbstractCegarLoop]: Abstraction has 503 states and 710 transitions. [2024-11-12 12:03:54,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 4 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 12:03:54,621 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 710 transitions. [2024-11-12 12:03:54,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-12 12:03:54,623 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:03:54,623 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:03:54,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 12:03:54,624 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 12:03:54,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:03:54,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1666136820, now seen corresponding path program 1 times [2024-11-12 12:03:54,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:03:54,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133715051] [2024-11-12 12:03:54,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:03:54,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:03:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:03:54,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-12 12:03:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:03:54,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-12 12:03:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:03:54,923 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 12:03:54,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:03:54,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133715051] [2024-11-12 12:03:54,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133715051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:03:54,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:03:54,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 12:03:54,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768939374] [2024-11-12 12:03:54,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:03:54,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 12:03:54,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:03:54,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 12:03:54,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 12:03:54,930 INFO L87 Difference]: Start difference. First operand 503 states and 710 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 12:03:55,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 12:03:55,433 INFO L93 Difference]: Finished difference Result 1017 states and 1429 transitions. [2024-11-12 12:03:55,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 12:03:55,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 171 [2024-11-12 12:03:55,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 12:03:55,440 INFO L225 Difference]: With dead ends: 1017 [2024-11-12 12:03:55,440 INFO L226 Difference]: Without dead ends: 646 [2024-11-12 12:03:55,441 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 12:03:55,443 INFO L435 NwaCegarLoop]: 514 mSDtfsCounter, 247 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-12 12:03:55,444 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 1414 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-12 12:03:55,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2024-11-12 12:03:55,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 643. [2024-11-12 12:03:55,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 621 states have (on average 1.3832528180354267) internal successors, (859), 631 states have internal predecessors, (859), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-12 12:03:55,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 897 transitions. [2024-11-12 12:03:55,470 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 897 transitions. Word has length 171 [2024-11-12 12:03:55,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 12:03:55,471 INFO L471 AbstractCegarLoop]: Abstraction has 643 states and 897 transitions. [2024-11-12 12:03:55,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 3 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 12:03:55,472 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 897 transitions. [2024-11-12 12:03:55,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-11-12 12:03:55,474 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:03:55,474 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:03:55,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 12:03:55,474 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 12:03:55,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:03:55,475 INFO L85 PathProgramCache]: Analyzing trace with hash -426146729, now seen corresponding path program 1 times [2024-11-12 12:03:55,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:03:55,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983665492] [2024-11-12 12:03:55,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:03:55,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:03:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:03:55,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-12 12:03:55,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:03:55,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-12 12:03:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:03:55,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-11-12 12:03:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:03:55,873 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-11-12 12:03:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:03:55,877 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-12 12:03:55,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:03:55,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983665492] [2024-11-12 12:03:55,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983665492] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 12:03:55,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502476856] [2024-11-12 12:03:55,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:03:55,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 12:03:55,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 12:03:55,880 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) [2024-11-12 12:03:55,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 12:03:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:03:56,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 1036 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-12 12:03:56,380 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 12:03:56,697 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-12 12:03:56,698 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 12:03:56,992 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-12 12:03:56,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502476856] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 12:03:56,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 12:03:56,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2024-11-12 12:03:56,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378410243] [2024-11-12 12:03:56,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 12:03:56,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 12:03:56,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:03:56,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 12:03:56,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-12 12:03:56,998 INFO L87 Difference]: Start difference. First operand 643 states and 897 transitions. Second operand has 8 states, 8 states have (on average 60.5) internal successors, (484), 7 states have internal predecessors, (484), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-12 12:03:58,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-12 12:03:58,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 12:03:58,582 INFO L93 Difference]: Finished difference Result 1412 states and 1988 transitions. [2024-11-12 12:03:58,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 12:03:58,583 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 60.5) internal successors, (484), 7 states have internal predecessors, (484), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 186 [2024-11-12 12:03:58,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 12:03:58,590 INFO L225 Difference]: With dead ends: 1412 [2024-11-12 12:03:58,590 INFO L226 Difference]: Without dead ends: 1381 [2024-11-12 12:03:58,591 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-12 12:03:58,592 INFO L435 NwaCegarLoop]: 512 mSDtfsCounter, 1786 mSDsluCounter, 2070 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1818 SdHoareTripleChecker+Valid, 2582 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-12 12:03:58,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1818 Valid, 2582 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-12 12:03:58,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2024-11-12 12:03:58,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1378. [2024-11-12 12:03:58,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1341 states have (on average 1.372110365398956) internal successors, (1840), 1351 states have internal predecessors, (1840), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 25 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-12 12:03:58,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1908 transitions. [2024-11-12 12:03:58,633 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1908 transitions. Word has length 186 [2024-11-12 12:03:58,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 12:03:58,633 INFO L471 AbstractCegarLoop]: Abstraction has 1378 states and 1908 transitions. [2024-11-12 12:03:58,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 60.5) internal successors, (484), 7 states have internal predecessors, (484), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-12 12:03:58,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1908 transitions. [2024-11-12 12:03:58,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2024-11-12 12:03:58,647 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:03:58,647 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:03:58,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-12 12:03:58,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 12:03:58,849 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 12:03:58,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:03:58,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1048819294, now seen corresponding path program 1 times [2024-11-12 12:03:58,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:03:58,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373101183] [2024-11-12 12:03:58,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:03:58,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:03:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:04:00,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-12 12:04:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:04:00,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-12 12:04:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:04:00,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-11-12 12:04:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:04:00,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-11-12 12:04:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:04:00,683 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 0 proven. 868 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-12 12:04:00,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:04:00,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373101183] [2024-11-12 12:04:00,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373101183] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 12:04:00,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198665538] [2024-11-12 12:04:00,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:04:00,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 12:04:00,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 12:04:00,685 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) [2024-11-12 12:04:00,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 12:04:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:04:01,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 3112 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-12 12:04:01,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 12:04:02,535 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 0 proven. 868 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-12 12:04:02,535 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 12:04:03,226 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 0 proven. 868 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-12 12:04:03,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198665538] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 12:04:03,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 12:04:03,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2024-11-12 12:04:03,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610856766] [2024-11-12 12:04:03,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 12:04:03,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-12 12:04:03,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:04:03,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-12 12:04:03,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2024-11-12 12:04:03,232 INFO L87 Difference]: Start difference. First operand 1378 states and 1908 transitions. Second operand has 14 states, 14 states have (on average 97.14285714285714) internal successors, (1360), 13 states have internal predecessors, (1360), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-12 12:04:04,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 12:04:04,159 INFO L93 Difference]: Finished difference Result 3428 states and 4811 transitions. [2024-11-12 12:04:04,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-12 12:04:04,161 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 97.14285714285714) internal successors, (1360), 13 states have internal predecessors, (1360), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 624 [2024-11-12 12:04:04,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 12:04:04,181 INFO L225 Difference]: With dead ends: 3428 [2024-11-12 12:04:04,181 INFO L226 Difference]: Without dead ends: 3397 [2024-11-12 12:04:04,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1261 GetRequests, 1249 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2024-11-12 12:04:04,184 INFO L435 NwaCegarLoop]: 555 mSDtfsCounter, 6769 mSDsluCounter, 4926 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6873 SdHoareTripleChecker+Valid, 5481 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-12 12:04:04,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6873 Valid, 5481 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-12 12:04:04,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3397 states. [2024-11-12 12:04:04,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3397 to 3394. [2024-11-12 12:04:04,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 3321 states have (on average 1.3706714844926227) internal successors, (4552), 3331 states have internal predecessors, (4552), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 61 states have call predecessors, (70), 70 states have call successors, (70) [2024-11-12 12:04:04,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 4692 transitions. [2024-11-12 12:04:04,285 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 4692 transitions. Word has length 624 [2024-11-12 12:04:04,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 12:04:04,286 INFO L471 AbstractCegarLoop]: Abstraction has 3394 states and 4692 transitions. [2024-11-12 12:04:04,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 97.14285714285714) internal successors, (1360), 13 states have internal predecessors, (1360), 4 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-12 12:04:04,287 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 4692 transitions. [2024-11-12 12:04:04,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1501 [2024-11-12 12:04:04,345 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:04:04,346 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:04:04,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 12:04:04,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-12 12:04:04,547 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 12:04:04,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:04:04,548 INFO L85 PathProgramCache]: Analyzing trace with hash 938049912, now seen corresponding path program 2 times [2024-11-12 12:04:04,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:04:04,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799305861] [2024-11-12 12:04:04,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:04:04,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms