./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_SAX_nondet_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 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_SAX_nondet_test1-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 13:14:53,514 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 13:14:53,577 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 13:14:53,582 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 13:14:53,582 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 13:14:53,604 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 13:14:53,605 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 13:14:53,605 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 13:14:53,605 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 13:14:53,608 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 13:14:53,608 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 13:14:53,608 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 13:14:53,609 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 13:14:53,609 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 13:14:53,610 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 13:14:53,611 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 13:14:53,611 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 13:14:53,611 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 13:14:53,611 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 13:14:53,611 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 13:14:53,612 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 13:14:53,612 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 13:14:53,612 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 13:14:53,612 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 13:14:53,613 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 13:14:53,613 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 13:14:53,613 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 13:14:53,613 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 13:14:53,613 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 13:14:53,614 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 13:14:53,614 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 13:14:53,614 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 13:14:53,615 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 13:14:53,615 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 13:14:53,615 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 13:14:53,615 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 13:14:53,616 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 13:14:53,616 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 13:14:53,616 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 13:14:53,616 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 13:14:53,617 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 13:14:53,617 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 13:14:53,617 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 [2024-11-20 13:14:53,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 13:14:53,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 13:14:53,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 13:14:53,815 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 13:14:53,815 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 13:14:53,816 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test1-2.i [2024-11-20 13:14:55,009 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 13:14:55,214 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 13:14:55,215 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test1-2.i [2024-11-20 13:14:55,228 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abc615db2/f57e693fdac241b08615d86e1a11add7/FLAG5afb8e93e [2024-11-20 13:14:55,238 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abc615db2/f57e693fdac241b08615d86e1a11add7 [2024-11-20 13:14:55,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 13:14:55,241 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 13:14:55,244 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 13:14:55,244 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 13:14:55,248 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 13:14:55,249 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:14:55" (1/1) ... [2024-11-20 13:14:55,249 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@479eba5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:14:55, skipping insertion in model container [2024-11-20 13:14:55,250 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:14:55" (1/1) ... [2024-11-20 13:14:55,286 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 13:14:55,563 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test1-2.i[33519,33532] [2024-11-20 13:14:55,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 13:14:55,662 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 13:14:55,692 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test1-2.i[33519,33532] [2024-11-20 13:14:55,742 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 13:14:55,797 INFO L204 MainTranslator]: Completed translation [2024-11-20 13:14:55,798 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:14:55 WrapperNode [2024-11-20 13:14:55,799 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 13:14:55,799 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 13:14:55,800 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 13:14:55,800 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 13:14:55,805 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:14:55" (1/1) ... [2024-11-20 13:14:55,822 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:14:55" (1/1) ... [2024-11-20 13:14:55,866 INFO L138 Inliner]: procedures = 176, calls = 220, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 963 [2024-11-20 13:14:55,867 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 13:14:55,868 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 13:14:55,868 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 13:14:55,868 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 13:14:55,881 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:14:55" (1/1) ... [2024-11-20 13:14:55,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:14:55" (1/1) ... [2024-11-20 13:14:55,888 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:14:55" (1/1) ... [2024-11-20 13:14:55,945 INFO L175 MemorySlicer]: Split 206 memory accesses to 2 slices as follows [2, 204]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 50 writes are split as follows [0, 50]. [2024-11-20 13:14:55,945 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:14:55" (1/1) ... [2024-11-20 13:14:55,945 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:14:55" (1/1) ... [2024-11-20 13:14:55,979 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:14:55" (1/1) ... [2024-11-20 13:14:55,992 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:14:55" (1/1) ... [2024-11-20 13:14:55,998 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:14:55" (1/1) ... [2024-11-20 13:14:56,001 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:14:55" (1/1) ... [2024-11-20 13:14:56,006 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 13:14:56,009 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 13:14:56,009 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 13:14:56,009 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 13:14:56,010 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:14:55" (1/1) ... [2024-11-20 13:14:56,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 13:14:56,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:14:56,038 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-20 13:14:56,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-20 13:14:56,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 13:14:56,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 13:14:56,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 13:14:56,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 13:14:56,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-20 13:14:56,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-20 13:14:56,072 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-20 13:14:56,072 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-20 13:14:56,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 13:14:56,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 13:14:56,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-20 13:14:56,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-20 13:14:56,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-20 13:14:56,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-20 13:14:56,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 13:14:56,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 13:14:56,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 13:14:56,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 13:14:56,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 13:14:56,212 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 13:14:56,213 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 13:14:56,994 INFO L? ?]: Removed 219 outVars from TransFormulas that were not future-live. [2024-11-20 13:14:56,995 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 13:14:57,009 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 13:14:57,009 INFO L316 CfgBuilder]: Removed 40 assume(true) statements. [2024-11-20 13:14:57,010 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:14:57 BoogieIcfgContainer [2024-11-20 13:14:57,010 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 13:14:57,011 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 13:14:57,011 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 13:14:57,015 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 13:14:57,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 01:14:55" (1/3) ... [2024-11-20 13:14:57,016 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a3479ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:14:57, skipping insertion in model container [2024-11-20 13:14:57,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:14:55" (2/3) ... [2024-11-20 13:14:57,017 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a3479ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:14:57, skipping insertion in model container [2024-11-20 13:14:57,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:14:57" (3/3) ... [2024-11-20 13:14:57,018 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_nondet_test1-2.i [2024-11-20 13:14:57,030 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 13:14:57,030 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 13:14:57,080 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 13:14:57,086 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;@175cc2e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 13:14:57,086 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-20 13:14:57,089 INFO L276 IsEmpty]: Start isEmpty. Operand has 246 states, 240 states have (on average 1.6083333333333334) internal successors, (386), 241 states have internal predecessors, (386), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 13:14:57,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-20 13:14:57,097 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:14:57,097 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:14:57,098 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:14:57,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:14:57,105 INFO L85 PathProgramCache]: Analyzing trace with hash 84190920, now seen corresponding path program 1 times [2024-11-20 13:14:57,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:14:57,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945412998] [2024-11-20 13:14:57,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:14:57,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:14:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:57,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:14:57,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:14:57,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945412998] [2024-11-20 13:14:57,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945412998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:14:57,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:14:57,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 13:14:57,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101462006] [2024-11-20 13:14:57,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:14:57,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-20 13:14:57,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:14:57,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-20 13:14:57,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-20 13:14:57,247 INFO L87 Difference]: Start difference. First operand has 246 states, 240 states have (on average 1.6083333333333334) internal successors, (386), 241 states have internal predecessors, (386), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:14:57,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:14:57,280 INFO L93 Difference]: Finished difference Result 490 states and 782 transitions. [2024-11-20 13:14:57,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-20 13:14:57,282 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-20 13:14:57,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:14:57,288 INFO L225 Difference]: With dead ends: 490 [2024-11-20 13:14:57,288 INFO L226 Difference]: Without dead ends: 207 [2024-11-20 13:14:57,290 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-20 13:14:57,296 INFO L432 NwaCegarLoop]: 347 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 13:14:57,297 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 13:14:57,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-20 13:14:57,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2024-11-20 13:14:57,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 202 states have (on average 1.4306930693069306) internal successors, (289), 202 states have internal predecessors, (289), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 13:14:57,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 295 transitions. [2024-11-20 13:14:57,333 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 295 transitions. Word has length 8 [2024-11-20 13:14:57,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:14:57,333 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 295 transitions. [2024-11-20 13:14:57,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:14:57,333 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 295 transitions. [2024-11-20 13:14:57,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-20 13:14:57,334 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:14:57,334 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:14:57,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 13:14:57,334 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:14:57,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:14:57,335 INFO L85 PathProgramCache]: Analyzing trace with hash 516422669, now seen corresponding path program 1 times [2024-11-20 13:14:57,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:14:57,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187610850] [2024-11-20 13:14:57,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:14:57,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:14:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:57,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:14:57,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:14:57,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187610850] [2024-11-20 13:14:57,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187610850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:14:57,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:14:57,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 13:14:57,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076844922] [2024-11-20 13:14:57,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:14:57,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 13:14:57,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:14:57,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 13:14:57,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 13:14:57,433 INFO L87 Difference]: Start difference. First operand 207 states and 295 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:14:57,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:14:57,485 INFO L93 Difference]: Finished difference Result 408 states and 584 transitions. [2024-11-20 13:14:57,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 13:14:57,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-20 13:14:57,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:14:57,487 INFO L225 Difference]: With dead ends: 408 [2024-11-20 13:14:57,487 INFO L226 Difference]: Without dead ends: 401 [2024-11-20 13:14:57,488 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 13:14:57,489 INFO L432 NwaCegarLoop]: 292 mSDtfsCounter, 274 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 13:14:57,489 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 582 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 13:14:57,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2024-11-20 13:14:57,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 208. [2024-11-20 13:14:57,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 203 states have (on average 1.4285714285714286) internal successors, (290), 203 states have internal predecessors, (290), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 13:14:57,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 296 transitions. [2024-11-20 13:14:57,512 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 296 transitions. Word has length 8 [2024-11-20 13:14:57,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:14:57,513 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 296 transitions. [2024-11-20 13:14:57,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:14:57,513 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 296 transitions. [2024-11-20 13:14:57,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-20 13:14:57,519 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:14:57,519 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] [2024-11-20 13:14:57,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 13:14:57,519 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:14:57,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:14:57,520 INFO L85 PathProgramCache]: Analyzing trace with hash -448149699, now seen corresponding path program 1 times [2024-11-20 13:14:57,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:14:57,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143293335] [2024-11-20 13:14:57,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:14:57,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:14:57,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:57,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:14:57,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:14:57,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143293335] [2024-11-20 13:14:57,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143293335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:14:57,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:14:57,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 13:14:57,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269273223] [2024-11-20 13:14:57,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:14:57,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 13:14:57,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:14:57,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 13:14:57,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:14:57,847 INFO L87 Difference]: Start difference. First operand 208 states and 296 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:14:57,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:14:57,923 INFO L93 Difference]: Finished difference Result 416 states and 592 transitions. [2024-11-20 13:14:57,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 13:14:57,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2024-11-20 13:14:57,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:14:57,925 INFO L225 Difference]: With dead ends: 416 [2024-11-20 13:14:57,925 INFO L226 Difference]: Without dead ends: 211 [2024-11-20 13:14:57,926 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 13:14:57,927 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 105 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 13:14:57,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 708 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 13:14:57,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-20 13:14:57,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 208. [2024-11-20 13:14:57,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 203 states have (on average 1.3940886699507389) internal successors, (283), 203 states have internal predecessors, (283), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 13:14:57,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 289 transitions. [2024-11-20 13:14:57,934 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 289 transitions. Word has length 83 [2024-11-20 13:14:57,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:14:57,934 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 289 transitions. [2024-11-20 13:14:57,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:14:57,935 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 289 transitions. [2024-11-20 13:14:57,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-20 13:14:57,936 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:14:57,937 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] [2024-11-20 13:14:57,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 13:14:57,937 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:14:57,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:14:57,937 INFO L85 PathProgramCache]: Analyzing trace with hash -464960695, now seen corresponding path program 1 times [2024-11-20 13:14:57,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:14:57,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110428072] [2024-11-20 13:14:57,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:14:57,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:14:57,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:58,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:14:58,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:14:58,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110428072] [2024-11-20 13:14:58,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110428072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:14:58,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:14:58,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 13:14:58,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197780048] [2024-11-20 13:14:58,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:14:58,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 13:14:58,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:14:58,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 13:14:58,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 13:14:58,093 INFO L87 Difference]: Start difference. First operand 208 states and 289 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:14:58,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:14:58,134 INFO L93 Difference]: Finished difference Result 542 states and 764 transitions. [2024-11-20 13:14:58,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 13:14:58,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2024-11-20 13:14:58,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:14:58,137 INFO L225 Difference]: With dead ends: 542 [2024-11-20 13:14:58,137 INFO L226 Difference]: Without dead ends: 337 [2024-11-20 13:14:58,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 13:14:58,138 INFO L432 NwaCegarLoop]: 287 mSDtfsCounter, 134 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 13:14:58,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 566 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 13:14:58,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2024-11-20 13:14:58,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2024-11-20 13:14:58,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 332 states have (on average 1.4186746987951808) internal successors, (471), 332 states have internal predecessors, (471), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 13:14:58,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 477 transitions. [2024-11-20 13:14:58,175 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 477 transitions. Word has length 83 [2024-11-20 13:14:58,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:14:58,175 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 477 transitions. [2024-11-20 13:14:58,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 13:14:58,176 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 477 transitions. [2024-11-20 13:14:58,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-20 13:14:58,180 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:14:58,181 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:14:58,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 13:14:58,181 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:14:58,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:14:58,182 INFO L85 PathProgramCache]: Analyzing trace with hash 690154010, now seen corresponding path program 1 times [2024-11-20 13:14:58,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:14:58,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353861321] [2024-11-20 13:14:58,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:14:58,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:14:58,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:58,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-20 13:14:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:58,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-20 13:14:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:58,404 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:14:58,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:14:58,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353861321] [2024-11-20 13:14:58,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353861321] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:14:58,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559430272] [2024-11-20 13:14:58,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:14:58,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:14:58,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:14:58,407 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:14:58,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 13:14:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:58,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-20 13:14:58,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:14:58,763 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:14:58,763 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 13:14:58,892 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:14:58,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559430272] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 13:14:58,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 13:14:58,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2024-11-20 13:14:58,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040585266] [2024-11-20 13:14:58,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 13:14:58,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 13:14:58,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:14:58,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 13:14:58,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-20 13:14:58,895 INFO L87 Difference]: Start difference. First operand 337 states and 477 transitions. Second operand has 8 states, 8 states have (on average 31.875) internal successors, (255), 7 states have internal predecessors, (255), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-20 13:14:59,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:14:59,078 INFO L93 Difference]: Finished difference Result 798 states and 1133 transitions. [2024-11-20 13:14:59,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 13:14:59,079 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 31.875) internal successors, (255), 7 states have internal predecessors, (255), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 98 [2024-11-20 13:14:59,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:14:59,085 INFO L225 Difference]: With dead ends: 798 [2024-11-20 13:14:59,085 INFO L226 Difference]: Without dead ends: 791 [2024-11-20 13:14:59,086 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-20 13:14:59,087 INFO L432 NwaCegarLoop]: 284 mSDtfsCounter, 1241 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 13:14:59,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1257 Valid, 1454 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 13:14:59,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2024-11-20 13:14:59,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 788. [2024-11-20 13:14:59,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 774 states have (on average 1.400516795865633) internal successors, (1084), 774 states have internal predecessors, (1084), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-20 13:14:59,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1108 transitions. [2024-11-20 13:14:59,113 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1108 transitions. Word has length 98 [2024-11-20 13:14:59,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:14:59,115 INFO L471 AbstractCegarLoop]: Abstraction has 788 states and 1108 transitions. [2024-11-20 13:14:59,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.875) internal successors, (255), 7 states have internal predecessors, (255), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-20 13:14:59,116 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1108 transitions. [2024-11-20 13:14:59,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2024-11-20 13:14:59,123 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:14:59,123 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, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:14:59,134 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 13:14:59,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:14:59,324 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:14:59,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:14:59,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1182003292, now seen corresponding path program 1 times [2024-11-20 13:14:59,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:14:59,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333818780] [2024-11-20 13:14:59,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:14:59,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:14:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:15:00,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-20 13:15:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:15:00,006 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-20 13:15:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:15:00,011 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 4 proven. 327 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-20 13:15:00,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:15:00,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333818780] [2024-11-20 13:15:00,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333818780] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:15:00,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153581078] [2024-11-20 13:15:00,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:15:00,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:15:00,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:15:00,014 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 13:15:00,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 13:15:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:15:00,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 1658 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 13:15:00,446 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:15:00,832 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:15:00,833 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 13:15:01,176 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:15:01,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153581078] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 13:15:01,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 13:15:01,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-20 13:15:01,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560605961] [2024-11-20 13:15:01,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 13:15:01,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-20 13:15:01,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:15:01,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-20 13:15:01,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2024-11-20 13:15:01,181 INFO L87 Difference]: Start difference. First operand 788 states and 1108 transitions. Second operand has 17 states, 17 states have (on average 49.294117647058826) internal successors, (838), 16 states have internal predecessors, (838), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-20 13:15:02,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:15:02,315 INFO L93 Difference]: Finished difference Result 2338 states and 3320 transitions. [2024-11-20 13:15:02,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-20 13:15:02,316 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 49.294117647058826) internal successors, (838), 16 states have internal predecessors, (838), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 323 [2024-11-20 13:15:02,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:15:02,322 INFO L225 Difference]: With dead ends: 2338 [2024-11-20 13:15:02,322 INFO L226 Difference]: Without dead ends: 1876 [2024-11-20 13:15:02,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 669 GetRequests, 639 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=314, Invalid=678, Unknown=0, NotChecked=0, Total=992 [2024-11-20 13:15:02,324 INFO L432 NwaCegarLoop]: 433 mSDtfsCounter, 12069 mSDsluCounter, 2825 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12069 SdHoareTripleChecker+Valid, 3258 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-20 13:15:02,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12069 Valid, 3258 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-20 13:15:02,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1876 states. [2024-11-20 13:15:02,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1876 to 1872. [2024-11-20 13:15:02,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1872 states, 1858 states have (on average 1.4106566200215285) internal successors, (2621), 1858 states have internal predecessors, (2621), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-20 13:15:02,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 2645 transitions. [2024-11-20 13:15:02,354 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 2645 transitions. Word has length 323 [2024-11-20 13:15:02,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:15:02,355 INFO L471 AbstractCegarLoop]: Abstraction has 1872 states and 2645 transitions. [2024-11-20 13:15:02,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 49.294117647058826) internal successors, (838), 16 states have internal predecessors, (838), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-20 13:15:02,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 2645 transitions. [2024-11-20 13:15:02,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2024-11-20 13:15:02,365 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:15:02,365 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, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:15:02,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 13:15:02,569 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,SelfDestructingSolverStorable5 [2024-11-20 13:15:02,570 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:15:02,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:15:02,570 INFO L85 PathProgramCache]: Analyzing trace with hash 671975038, now seen corresponding path program 1 times [2024-11-20 13:15:02,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:15:02,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754264002] [2024-11-20 13:15:02,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:15:02,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms