./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.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 765142a1ef820c0c2cf2fa98a3978a1412f5a1196c629c20848264001100dcc9 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 14:51:58,098 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 14:51:58,181 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 14:51:58,185 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 14:51:58,185 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 14:51:58,207 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 14:51:58,208 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 14:51:58,208 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 14:51:58,209 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 14:51:58,209 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 14:51:58,209 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 14:51:58,210 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 14:51:58,210 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 14:51:58,211 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 14:51:58,211 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 14:51:58,211 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 14:51:58,212 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 14:51:58,212 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 14:51:58,212 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 14:51:58,213 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 14:51:58,213 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 14:51:58,216 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 14:51:58,216 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 14:51:58,217 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 14:51:58,217 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 14:51:58,217 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 14:51:58,218 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 14:51:58,218 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 14:51:58,218 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 14:51:58,218 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 14:51:58,219 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 14:51:58,219 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 14:51:58,219 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:51:58,220 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 14:51:58,223 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 14:51:58,223 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 14:51:58,224 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 14:51:58,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 14:51:58,224 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 14:51:58,224 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 14:51:58,224 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 14:51:58,225 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 14:51:58,225 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 765142a1ef820c0c2cf2fa98a3978a1412f5a1196c629c20848264001100dcc9 [2024-10-24 14:51:58,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 14:51:58,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 14:51:58,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 14:51:58,513 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 14:51:58,513 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 14:51:58,514 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i [2024-10-24 14:51:59,948 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 14:52:00,284 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 14:52:00,285 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i [2024-10-24 14:52:00,307 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0c57eddf/3b9015fbabf345b691593adbfae1613c/FLAG261b5737e [2024-10-24 14:52:00,505 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0c57eddf/3b9015fbabf345b691593adbfae1613c [2024-10-24 14:52:00,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 14:52:00,508 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 14:52:00,509 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 14:52:00,510 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 14:52:00,514 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 14:52:00,515 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:52:00" (1/1) ... [2024-10-24 14:52:00,516 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@513cadf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:52:00, skipping insertion in model container [2024-10-24 14:52:00,516 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:52:00" (1/1) ... [2024-10-24 14:52:00,575 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 14:52:01,038 WARN L248 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_OAT_test4-1.i[33021,33034] [2024-10-24 14:52:01,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:52:01,167 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 14:52:01,219 WARN L248 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_OAT_test4-1.i[33021,33034] [2024-10-24 14:52:01,283 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:52:01,318 INFO L204 MainTranslator]: Completed translation [2024-10-24 14:52:01,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:52:01 WrapperNode [2024-10-24 14:52:01,319 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 14:52:01,320 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 14:52:01,320 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 14:52:01,320 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 14:52:01,326 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:52:01" (1/1) ... [2024-10-24 14:52:01,355 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:52:01" (1/1) ... [2024-10-24 14:52:01,420 INFO L138 Inliner]: procedures = 176, calls = 335, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1586 [2024-10-24 14:52:01,421 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 14:52:01,428 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 14:52:01,428 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 14:52:01,428 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 14:52:01,440 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:52:01" (1/1) ... [2024-10-24 14:52:01,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:52:01" (1/1) ... [2024-10-24 14:52:01,462 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:52:01" (1/1) ... [2024-10-24 14:52:01,556 INFO L175 MemorySlicer]: Split 309 memory accesses to 2 slices as follows [307, 2]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2]. The 82 writes are split as follows [82, 0]. [2024-10-24 14:52:01,560 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:52:01" (1/1) ... [2024-10-24 14:52:01,560 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:52:01" (1/1) ... [2024-10-24 14:52:01,607 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:52:01" (1/1) ... [2024-10-24 14:52:01,627 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:52:01" (1/1) ... [2024-10-24 14:52:01,636 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:52:01" (1/1) ... [2024-10-24 14:52:01,646 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:52:01" (1/1) ... [2024-10-24 14:52:01,659 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 14:52:01,660 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 14:52:01,660 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 14:52:01,660 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 14:52:01,661 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:52:01" (1/1) ... [2024-10-24 14:52:01,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:52:01,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:52:01,693 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) [2024-10-24 14:52:01,696 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 [2024-10-24 14:52:01,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 14:52:01,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 14:52:01,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 14:52:01,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 14:52:01,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 14:52:01,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 14:52:01,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-24 14:52:01,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-24 14:52:01,736 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-24 14:52:01,736 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-24 14:52:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 14:52:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 14:52:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 14:52:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 14:52:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-24 14:52:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-24 14:52:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 14:52:01,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 14:52:01,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 14:52:01,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 14:52:01,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 14:52:01,948 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 14:52:01,950 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 14:52:03,576 INFO L? ?]: Removed 387 outVars from TransFormulas that were not future-live. [2024-10-24 14:52:03,576 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 14:52:03,615 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 14:52:03,615 INFO L314 CfgBuilder]: Removed 60 assume(true) statements. [2024-10-24 14:52:03,616 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:52:03 BoogieIcfgContainer [2024-10-24 14:52:03,616 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 14:52:03,618 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 14:52:03,618 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 14:52:03,621 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 14:52:03,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:52:00" (1/3) ... [2024-10-24 14:52:03,622 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43442292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:52:03, skipping insertion in model container [2024-10-24 14:52:03,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:52:01" (2/3) ... [2024-10-24 14:52:03,623 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43442292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:52:03, skipping insertion in model container [2024-10-24 14:52:03,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:52:03" (3/3) ... [2024-10-24 14:52:03,624 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test4-1.i [2024-10-24 14:52:03,639 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 14:52:03,639 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 14:52:03,706 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 14:52:03,714 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;@7ad9dc0c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 14:52:03,715 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 14:52:03,720 INFO L276 IsEmpty]: Start isEmpty. Operand has 419 states, 399 states have (on average 1.6265664160401003) internal successors, (649), 410 states have internal predecessors, (649), 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) [2024-10-24 14:52:03,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-24 14:52:03,728 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:03,729 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:52:03,729 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:52:03,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:03,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1932878731, now seen corresponding path program 1 times [2024-10-24 14:52:03,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:03,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747692939] [2024-10-24 14:52:03,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:03,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:03,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:52:03,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:52:03,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747692939] [2024-10-24 14:52:03,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747692939] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:52:03,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:52:03,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 14:52:03,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230398720] [2024-10-24 14:52:03,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:52:03,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 14:52:03,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:52:03,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 14:52:03,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 14:52:03,989 INFO L87 Difference]: Start difference. First operand has 419 states, 399 states have (on average 1.6265664160401003) internal successors, (649), 410 states have internal predecessors, (649), 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 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-10-24 14:52:04,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:52:04,146 INFO L93 Difference]: Finished difference Result 1221 states and 1996 transitions. [2024-10-24 14:52:04,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 14:52:04,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 9 [2024-10-24 14:52:04,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:52:04,172 INFO L225 Difference]: With dead ends: 1221 [2024-10-24 14:52:04,172 INFO L226 Difference]: Without dead ends: 801 [2024-10-24 14:52:04,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 14:52:04,184 INFO L432 NwaCegarLoop]: 692 mSDtfsCounter, 545 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 14:52:04,185 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 1297 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 14:52:04,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2024-10-24 14:52:04,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 418. [2024-10-24 14:52:04,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 399 states have (on average 1.4536340852130325) internal successors, (580), 409 states have internal predecessors, (580), 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) [2024-10-24 14:52:04,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 612 transitions. [2024-10-24 14:52:04,265 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 612 transitions. Word has length 9 [2024-10-24 14:52:04,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:52:04,266 INFO L471 AbstractCegarLoop]: Abstraction has 418 states and 612 transitions. [2024-10-24 14:52:04,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-10-24 14:52:04,267 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 612 transitions. [2024-10-24 14:52:04,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-10-24 14:52:04,277 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:04,277 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:52:04,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 14:52:04,278 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:52:04,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:04,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1247735708, now seen corresponding path program 1 times [2024-10-24 14:52:04,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:04,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074073704] [2024-10-24 14:52:04,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:04,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:04,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:52:04,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:52:04,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074073704] [2024-10-24 14:52:04,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074073704] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:52:04,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:52:04,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:52:04,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395634566] [2024-10-24 14:52:04,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:52:04,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:52:04,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:52:04,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:52:04,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:52:04,973 INFO L87 Difference]: Start difference. First operand 418 states and 612 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) [2024-10-24 14:52:05,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:52:05,089 INFO L93 Difference]: Finished difference Result 837 states and 1225 transitions. [2024-10-24 14:52:05,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:52:05,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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 155 [2024-10-24 14:52:05,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:52:05,095 INFO L225 Difference]: With dead ends: 837 [2024-10-24 14:52:05,095 INFO L226 Difference]: Without dead ends: 421 [2024-10-24 14:52:05,097 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:52:05,098 INFO L432 NwaCegarLoop]: 580 mSDtfsCounter, 105 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1649 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:52:05,099 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1649 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:52:05,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2024-10-24 14:52:05,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 418. [2024-10-24 14:52:05,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 399 states have (on average 1.4360902255639099) internal successors, (573), 409 states have internal predecessors, (573), 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) [2024-10-24 14:52:05,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 605 transitions. [2024-10-24 14:52:05,142 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 605 transitions. Word has length 155 [2024-10-24 14:52:05,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:52:05,143 INFO L471 AbstractCegarLoop]: Abstraction has 418 states and 605 transitions. [2024-10-24 14:52:05,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 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) [2024-10-24 14:52:05,143 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 605 transitions. [2024-10-24 14:52:05,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-10-24 14:52:05,150 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:05,150 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:52:05,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 14:52:05,151 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:52:05,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:05,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1820802600, now seen corresponding path program 1 times [2024-10-24 14:52:05,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:05,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84078741] [2024-10-24 14:52:05,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:05,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:05,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:05,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:52:05,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:52:05,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84078741] [2024-10-24 14:52:05,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84078741] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:52:05,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:52:05,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 14:52:05,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10881129] [2024-10-24 14:52:05,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:52:05,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 14:52:05,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:52:05,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 14:52:05,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 14:52:05,464 INFO L87 Difference]: Start difference. First operand 418 states and 605 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2024-10-24 14:52:05,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:52:05,516 INFO L93 Difference]: Finished difference Result 963 states and 1397 transitions. [2024-10-24 14:52:05,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 14:52:05,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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 155 [2024-10-24 14:52:05,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:52:05,522 INFO L225 Difference]: With dead ends: 963 [2024-10-24 14:52:05,522 INFO L226 Difference]: Without dead ends: 547 [2024-10-24 14:52:05,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 14:52:05,529 INFO L432 NwaCegarLoop]: 600 mSDtfsCounter, 134 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 14:52:05,529 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1194 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 14:52:05,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2024-10-24 14:52:05,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 547. [2024-10-24 14:52:05,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 528 states have (on average 1.441287878787879) internal successors, (761), 538 states have internal predecessors, (761), 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) [2024-10-24 14:52:05,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 793 transitions. [2024-10-24 14:52:05,554 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 793 transitions. Word has length 155 [2024-10-24 14:52:05,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:52:05,554 INFO L471 AbstractCegarLoop]: Abstraction has 547 states and 793 transitions. [2024-10-24 14:52:05,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 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) [2024-10-24 14:52:05,555 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 793 transitions. [2024-10-24 14:52:05,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-10-24 14:52:05,558 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:05,558 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:52:05,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 14:52:05,559 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:52:05,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:05,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1190414817, now seen corresponding path program 1 times [2024-10-24 14:52:05,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:05,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318545622] [2024-10-24 14:52:05,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:05,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:05,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 14:52:05,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:05,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 14:52:05,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:05,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:52:05,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:52:05,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318545622] [2024-10-24 14:52:05,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318545622] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:52:05,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:52:05,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 14:52:05,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869214694] [2024-10-24 14:52:05,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:52:05,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 14:52:05,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:52:05,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 14:52:05,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:52:05,973 INFO L87 Difference]: Start difference. First operand 547 states and 793 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 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) [2024-10-24 14:52:06,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:52:06,498 INFO L93 Difference]: Finished difference Result 968 states and 1407 transitions. [2024-10-24 14:52:06,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 14:52:06,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 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 168 [2024-10-24 14:52:06,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:52:06,503 INFO L225 Difference]: With dead ends: 968 [2024-10-24 14:52:06,504 INFO L226 Difference]: Without dead ends: 552 [2024-10-24 14:52:06,507 INFO L431 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 [2024-10-24 14:52:06,507 INFO L432 NwaCegarLoop]: 567 mSDtfsCounter, 113 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 2047 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:52:06,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 2047 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 14:52:06,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2024-10-24 14:52:06,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 547. [2024-10-24 14:52:06,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 528 states have (on average 1.428030303030303) internal successors, (754), 538 states have internal predecessors, (754), 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) [2024-10-24 14:52:06,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 786 transitions. [2024-10-24 14:52:06,534 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 786 transitions. Word has length 168 [2024-10-24 14:52:06,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:52:06,537 INFO L471 AbstractCegarLoop]: Abstraction has 547 states and 786 transitions. [2024-10-24 14:52:06,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 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) [2024-10-24 14:52:06,537 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 786 transitions. [2024-10-24 14:52:06,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-10-24 14:52:06,539 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:06,539 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:52:06,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 14:52:06,540 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:52:06,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:06,540 INFO L85 PathProgramCache]: Analyzing trace with hash 528737007, now seen corresponding path program 1 times [2024-10-24 14:52:06,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:06,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399750025] [2024-10-24 14:52:06,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:06,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:06,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 14:52:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:06,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 14:52:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:06,859 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:52:06,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:52:06,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399750025] [2024-10-24 14:52:06,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399750025] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:52:06,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:52:06,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 14:52:06,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275046254] [2024-10-24 14:52:06,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:52:06,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 14:52:06,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:52:06,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 14:52:06,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:52:06,862 INFO L87 Difference]: Start difference. First operand 547 states and 786 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 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) [2024-10-24 14:52:08,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:52:08,175 INFO L93 Difference]: Finished difference Result 917 states and 1315 transitions. [2024-10-24 14:52:08,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:52:08,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 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 168 [2024-10-24 14:52:08,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:52:08,179 INFO L225 Difference]: With dead ends: 917 [2024-10-24 14:52:08,179 INFO L226 Difference]: Without dead ends: 501 [2024-10-24 14:52:08,180 INFO L431 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 [2024-10-24 14:52:08,180 INFO L432 NwaCegarLoop]: 492 mSDtfsCounter, 16 mSDsluCounter, 1333 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:52:08,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1825 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-24 14:52:08,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2024-10-24 14:52:08,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 499. [2024-10-24 14:52:08,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 480 states have (on average 1.4041666666666666) internal successors, (674), 490 states have internal predecessors, (674), 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) [2024-10-24 14:52:08,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 706 transitions. [2024-10-24 14:52:08,198 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 706 transitions. Word has length 168 [2024-10-24 14:52:08,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:52:08,199 INFO L471 AbstractCegarLoop]: Abstraction has 499 states and 706 transitions. [2024-10-24 14:52:08,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 4 states have internal predecessors, (161), 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) [2024-10-24 14:52:08,199 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 706 transitions. [2024-10-24 14:52:08,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-10-24 14:52:08,201 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:08,202 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:52:08,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 14:52:08,202 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:52:08,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:08,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1432837651, now seen corresponding path program 1 times [2024-10-24 14:52:08,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:08,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119760202] [2024-10-24 14:52:08,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:08,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:08,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 14:52:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:08,470 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 14:52:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:08,477 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:52:08,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:52:08,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119760202] [2024-10-24 14:52:08,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119760202] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:52:08,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:52:08,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:52:08,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343750174] [2024-10-24 14:52:08,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:52:08,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:52:08,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:52:08,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:52:08,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:52:08,482 INFO L87 Difference]: Start difference. First operand 499 states and 706 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 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) [2024-10-24 14:52:09,817 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 [] [2024-10-24 14:52:10,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:52:10,073 INFO L93 Difference]: Finished difference Result 1009 states and 1421 transitions. [2024-10-24 14:52:10,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:52:10,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 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 168 [2024-10-24 14:52:10,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:52:10,081 INFO L225 Difference]: With dead ends: 1009 [2024-10-24 14:52:10,081 INFO L226 Difference]: Without dead ends: 641 [2024-10-24 14:52:10,083 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:52:10,083 INFO L432 NwaCegarLoop]: 507 mSDtfsCounter, 246 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:52:10,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 1395 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-24 14:52:10,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2024-10-24 14:52:10,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 639. [2024-10-24 14:52:10,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 617 states have (on average 1.385737439222042) internal successors, (855), 627 states have internal predecessors, (855), 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) [2024-10-24 14:52:10,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 893 transitions. [2024-10-24 14:52:10,112 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 893 transitions. Word has length 168 [2024-10-24 14:52:10,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:52:10,113 INFO L471 AbstractCegarLoop]: Abstraction has 639 states and 893 transitions. [2024-10-24 14:52:10,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 3 states have internal predecessors, (161), 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) [2024-10-24 14:52:10,113 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 893 transitions. [2024-10-24 14:52:10,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-10-24 14:52:10,116 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:10,116 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:52:10,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 14:52:10,116 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:52:10,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:10,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1582318930, now seen corresponding path program 1 times [2024-10-24 14:52:10,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:10,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933886134] [2024-10-24 14:52:10,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:10,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:10,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 14:52:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:10,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 14:52:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:10,439 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-24 14:52:10,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:10,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-24 14:52:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:10,448 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:52:10,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:52:10,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933886134] [2024-10-24 14:52:10,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933886134] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:52:10,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169658170] [2024-10-24 14:52:10,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:10,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:52:10,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:52:10,451 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) [2024-10-24 14:52:10,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 14:52:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:10,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 1036 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 14:52:10,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:52:11,238 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:52:11,239 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 14:52:11,518 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:52:11,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169658170] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 14:52:11,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 14:52:11,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2024-10-24 14:52:11,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726560811] [2024-10-24 14:52:11,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 14:52:11,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 14:52:11,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:52:11,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 14:52:11,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-10-24 14:52:11,522 INFO L87 Difference]: Start difference. First operand 639 states and 893 transitions. Second operand has 8 states, 8 states have (on average 60.25) internal successors, (482), 7 states have internal predecessors, (482), 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) [2024-10-24 14:52:12,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:52:12,038 INFO L93 Difference]: Finished difference Result 1405 states and 1981 transitions. [2024-10-24 14:52:12,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:52:12,041 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 60.25) internal successors, (482), 7 states have internal predecessors, (482), 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 181 [2024-10-24 14:52:12,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:52:12,050 INFO L225 Difference]: With dead ends: 1405 [2024-10-24 14:52:12,050 INFO L226 Difference]: Without dead ends: 1376 [2024-10-24 14:52:12,052 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-10-24 14:52:12,053 INFO L432 NwaCegarLoop]: 548 mSDtfsCounter, 2589 mSDsluCounter, 1898 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2621 SdHoareTripleChecker+Valid, 2446 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:52:12,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2621 Valid, 2446 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 14:52:12,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2024-10-24 14:52:12,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1374. [2024-10-24 14:52:12,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1374 states, 1337 states have (on average 1.3732236350037397) internal successors, (1836), 1347 states have internal predecessors, (1836), 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) [2024-10-24 14:52:12,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1374 states to 1374 states and 1904 transitions. [2024-10-24 14:52:12,093 INFO L78 Accepts]: Start accepts. Automaton has 1374 states and 1904 transitions. Word has length 181 [2024-10-24 14:52:12,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:52:12,093 INFO L471 AbstractCegarLoop]: Abstraction has 1374 states and 1904 transitions. [2024-10-24 14:52:12,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 60.25) internal successors, (482), 7 states have internal predecessors, (482), 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) [2024-10-24 14:52:12,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1374 states and 1904 transitions. [2024-10-24 14:52:12,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2024-10-24 14:52:12,105 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:12,106 INFO L215 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, 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] [2024-10-24 14:52:12,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 14:52:12,310 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 [2024-10-24 14:52:12,311 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:52:12,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:12,312 INFO L85 PathProgramCache]: Analyzing trace with hash -310638407, now seen corresponding path program 1 times [2024-10-24 14:52:12,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:12,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320712294] [2024-10-24 14:52:12,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:12,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:52:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:13,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 14:52:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:13,964 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 14:52:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:13,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-24 14:52:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:13,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-24 14:52:13,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:13,976 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 0 proven. 868 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:52:13,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:52:13,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320712294] [2024-10-24 14:52:13,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320712294] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:52:13,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507017778] [2024-10-24 14:52:13,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:13,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:52:13,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:52:13,979 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) [2024-10-24 14:52:13,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 14:52:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:52:15,084 INFO L255 TraceCheckSpWp]: Trace formula consists of 3112 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 14:52:15,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:52:15,822 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 0 proven. 868 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:52:15,823 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 14:52:16,559 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 0 proven. 868 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-24 14:52:16,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507017778] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 14:52:16,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 14:52:16,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2024-10-24 14:52:16,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323616306] [2024-10-24 14:52:16,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 14:52:16,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 14:52:16,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:52:16,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 14:52:16,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2024-10-24 14:52:16,590 INFO L87 Difference]: Start difference. First operand 1374 states and 1904 transitions. Second operand has 14 states, 14 states have (on average 97.0) internal successors, (1358), 13 states have internal predecessors, (1358), 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) [2024-10-24 14:52:17,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:52:17,489 INFO L93 Difference]: Finished difference Result 3421 states and 4804 transitions. [2024-10-24 14:52:17,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 14:52:17,491 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 97.0) internal successors, (1358), 13 states have internal predecessors, (1358), 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 619 [2024-10-24 14:52:17,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:52:17,509 INFO L225 Difference]: With dead ends: 3421 [2024-10-24 14:52:17,510 INFO L226 Difference]: Without dead ends: 3392 [2024-10-24 14:52:17,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1250 GetRequests, 1238 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2024-10-24 14:52:17,513 INFO L432 NwaCegarLoop]: 634 mSDtfsCounter, 6874 mSDsluCounter, 4825 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6978 SdHoareTripleChecker+Valid, 5459 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 14:52:17,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6978 Valid, 5459 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 14:52:17,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3392 states. [2024-10-24 14:52:17,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3392 to 3390. [2024-10-24 14:52:17,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3390 states, 3317 states have (on average 1.371118480554718) internal successors, (4548), 3327 states have internal predecessors, (4548), 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) [2024-10-24 14:52:17,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3390 states to 3390 states and 4688 transitions. [2024-10-24 14:52:17,604 INFO L78 Accepts]: Start accepts. Automaton has 3390 states and 4688 transitions. Word has length 619 [2024-10-24 14:52:17,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:52:17,605 INFO L471 AbstractCegarLoop]: Abstraction has 3390 states and 4688 transitions. [2024-10-24 14:52:17,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 97.0) internal successors, (1358), 13 states have internal predecessors, (1358), 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) [2024-10-24 14:52:17,606 INFO L276 IsEmpty]: Start isEmpty. Operand 3390 states and 4688 transitions. [2024-10-24 14:52:17,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1496 [2024-10-24 14:52:17,673 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:52:17,675 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:52:17,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 14:52:17,876 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 [2024-10-24 14:52:17,876 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:52:17,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:52:17,877 INFO L85 PathProgramCache]: Analyzing trace with hash -208002545, now seen corresponding path program 2 times [2024-10-24 14:52:17,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:52:17,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497566047] [2024-10-24 14:52:17,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:52:17,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms