./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_test1-1.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_test1-1.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 fdc85b042221b41aa26e62667e19ce1f6c246be9a2cb4f81fe8b15c8429db160 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 13:14:52,780 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 13:14:52,849 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 13:14:52,856 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 13:14:52,858 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 13:14:52,887 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 13:14:52,888 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 13:14:52,888 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 13:14:52,889 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 13:14:52,890 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 13:14:52,891 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 13:14:52,891 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 13:14:52,891 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 13:14:52,892 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 13:14:52,893 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 13:14:52,894 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 13:14:52,894 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 13:14:52,894 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 13:14:52,895 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 13:14:52,895 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 13:14:52,895 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 13:14:52,896 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 13:14:52,896 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 13:14:52,896 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 13:14:52,896 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 13:14:52,897 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 13:14:52,897 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 13:14:52,897 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 13:14:52,898 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 13:14:52,898 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 13:14:52,898 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 13:14:52,901 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 13:14:52,901 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 13:14:52,901 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 13:14:52,901 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 13:14:52,902 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 13:14:52,902 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 13:14:52,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 13:14:52,902 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 13:14:52,902 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 13:14:52,902 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 13:14:52,904 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 13:14:52,904 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdc85b042221b41aa26e62667e19ce1f6c246be9a2cb4f81fe8b15c8429db160 [2024-11-20 13:14:53,136 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 13:14:53,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 13:14:53,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 13:14:53,162 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 13:14:53,163 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 13:14:53,164 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test1-1.i [2024-11-20 13:14:54,508 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 13:14:54,760 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 13:14:54,760 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test1-1.i [2024-11-20 13:14:54,784 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3cd3d0a6/ead2f03fca2945fba00966c5bf18e0d5/FLAG51e7347df [2024-11-20 13:14:54,802 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3cd3d0a6/ead2f03fca2945fba00966c5bf18e0d5 [2024-11-20 13:14:54,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 13:14:54,807 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 13:14:54,809 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 13:14:54,809 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 13:14:54,815 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 13:14:54,816 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:14:54" (1/1) ... [2024-11-20 13:14:54,817 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@682cd9a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:14:54, skipping insertion in model container [2024-11-20 13:14:54,817 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:14:54" (1/1) ... [2024-11-20 13:14:54,868 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 13:14:55,294 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_test1-1.i[33519,33532] [2024-11-20 13:14:55,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 13:14:55,397 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 13:14:55,430 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_test1-1.i[33519,33532] [2024-11-20 13:14:55,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 13:14:55,532 INFO L204 MainTranslator]: Completed translation [2024-11-20 13:14:55,533 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:14:55 WrapperNode [2024-11-20 13:14:55,533 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 13:14:55,534 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 13:14:55,535 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 13:14:55,535 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 13:14:55,542 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 13:14:55,574 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 13:14:55,618 INFO L138 Inliner]: procedures = 176, calls = 169, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 797 [2024-11-20 13:14:55,619 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 13:14:55,619 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 13:14:55,619 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 13:14:55,620 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 13:14:55,630 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 13:14:55,630 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 13:14:55,636 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 13:14:55,683 INFO L175 MemorySlicer]: Split 158 memory accesses to 2 slices as follows [2, 156]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 42 writes are split as follows [0, 42]. [2024-11-20 13:14:55,687 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 13:14:55,687 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 13:14:55,710 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 13:14:55,717 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 13:14:55,720 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 13:14:55,723 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 13:14:55,729 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 13:14:55,731 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 13:14:55,731 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 13:14:55,731 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 13:14:55,732 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 13:14:55,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 13:14:55,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:14:55,763 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 13:14:55,765 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 13:14:55,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 13:14:55,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 13:14:55,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 13:14:55,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 13:14:55,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-20 13:14:55,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-20 13:14:55,804 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-20 13:14:55,804 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-20 13:14:55,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 13:14:55,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 13:14:55,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-20 13:14:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-20 13:14:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-20 13:14:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-20 13:14:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 13:14:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 13:14:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 13:14:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 13:14:55,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 13:14:55,944 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 13:14:55,946 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 13:14:56,872 INFO L? ?]: Removed 194 outVars from TransFormulas that were not future-live. [2024-11-20 13:14:56,872 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 13:14:56,891 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 13:14:56,892 INFO L316 CfgBuilder]: Removed 31 assume(true) statements. [2024-11-20 13:14:56,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:14:56 BoogieIcfgContainer [2024-11-20 13:14:56,893 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 13:14:56,895 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 13:14:56,895 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 13:14:56,899 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 13:14:56,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 01:14:54" (1/3) ... [2024-11-20 13:14:56,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d0f4776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:14:56, skipping insertion in model container [2024-11-20 13:14:56,900 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 13:14:56,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d0f4776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:14:56, skipping insertion in model container [2024-11-20 13:14:56,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:14:56" (3/3) ... [2024-11-20 13:14:56,902 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_nondet_test1-1.i [2024-11-20 13:14:56,917 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 13:14:56,917 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-20 13:14:56,982 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 13:14:56,988 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;@2c04a1e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 13:14:56,988 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-20 13:14:56,993 INFO L276 IsEmpty]: Start isEmpty. Operand has 211 states, 205 states have (on average 1.604878048780488) internal successors, (329), 206 states have internal predecessors, (329), 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 13:14:56,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-20 13:14:56,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:14:56,998 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:14:56,999 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:14:57,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:14:57,003 INFO L85 PathProgramCache]: Analyzing trace with hash 84190920, now seen corresponding path program 1 times [2024-11-20 13:14:57,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:14:57,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145332320] [2024-11-20 13:14:57,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:14:57,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:14:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:57,144 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 13:14:57,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:14:57,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145332320] [2024-11-20 13:14:57,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145332320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:14:57,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:14:57,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 13:14:57,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464575140] [2024-11-20 13:14:57,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:14:57,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-20 13:14:57,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:14:57,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-20 13:14:57,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-20 13:14:57,179 INFO L87 Difference]: Start difference. First operand has 211 states, 205 states have (on average 1.604878048780488) internal successors, (329), 206 states have internal predecessors, (329), 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 13:14:57,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:14:57,227 INFO L93 Difference]: Finished difference Result 420 states and 668 transitions. [2024-11-20 13:14:57,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-20 13:14:57,229 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 13:14:57,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:14:57,240 INFO L225 Difference]: With dead ends: 420 [2024-11-20 13:14:57,240 INFO L226 Difference]: Without dead ends: 207 [2024-11-20 13:14:57,244 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 13:14:57,249 INFO L432 NwaCegarLoop]: 299 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, 299 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 13:14:57,250 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 13:14:57,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-20 13:14:57,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2024-11-20 13:14:57,291 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 13:14:57,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 295 transitions. [2024-11-20 13:14:57,296 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 295 transitions. Word has length 8 [2024-11-20 13:14:57,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:14:57,296 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 295 transitions. [2024-11-20 13:14:57,296 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 13:14:57,296 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 295 transitions. [2024-11-20 13:14:57,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-20 13:14:57,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:14:57,297 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:14:57,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 13:14:57,298 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:14:57,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:14:57,298 INFO L85 PathProgramCache]: Analyzing trace with hash 516422669, now seen corresponding path program 1 times [2024-11-20 13:14:57,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:14:57,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765712729] [2024-11-20 13:14:57,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:14:57,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:14:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:57,368 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 13:14:57,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:14:57,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765712729] [2024-11-20 13:14:57,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765712729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:14:57,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:14:57,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 13:14:57,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901110436] [2024-11-20 13:14:57,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:14:57,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 13:14:57,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:14:57,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 13:14:57,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 13:14:57,372 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 13:14:57,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:14:57,421 INFO L93 Difference]: Finished difference Result 408 states and 584 transitions. [2024-11-20 13:14:57,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 13:14:57,421 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 13:14:57,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:14:57,425 INFO L225 Difference]: With dead ends: 408 [2024-11-20 13:14:57,425 INFO L226 Difference]: Without dead ends: 401 [2024-11-20 13:14:57,426 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 13:14:57,427 INFO L432 NwaCegarLoop]: 335 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, 625 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 13:14:57,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 625 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 13:14:57,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2024-11-20 13:14:57,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 208. [2024-11-20 13:14:57,445 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 13:14:57,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 296 transitions. [2024-11-20 13:14:57,446 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 296 transitions. Word has length 8 [2024-11-20 13:14:57,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:14:57,446 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 296 transitions. [2024-11-20 13:14:57,446 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 13:14:57,447 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 296 transitions. [2024-11-20 13:14:57,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-20 13:14:57,453 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:14:57,453 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 13:14:57,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 13:14:57,454 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:14:57,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:14:57,455 INFO L85 PathProgramCache]: Analyzing trace with hash -448149699, now seen corresponding path program 1 times [2024-11-20 13:14:57,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:14:57,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213534586] [2024-11-20 13:14:57,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:14:57,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:14:57,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:57,910 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 13:14:57,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:14:57,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213534586] [2024-11-20 13:14:57,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213534586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:14:57,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:14:57,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 13:14:57,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838304055] [2024-11-20 13:14:57,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:14:57,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 13:14:57,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:14:57,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 13:14:57,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:14:57,913 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 13:14:58,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:14:58,019 INFO L93 Difference]: Finished difference Result 416 states and 592 transitions. [2024-11-20 13:14:58,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 13:14:58,020 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 13:14:58,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:14:58,021 INFO L225 Difference]: With dead ends: 416 [2024-11-20 13:14:58,022 INFO L226 Difference]: Without dead ends: 211 [2024-11-20 13:14:58,023 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 13:14:58,025 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 105 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 13:14:58,027 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 13:14:58,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-11-20 13:14:58,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 208. [2024-11-20 13:14:58,040 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 13:14:58,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 289 transitions. [2024-11-20 13:14:58,041 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 289 transitions. Word has length 83 [2024-11-20 13:14:58,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:14:58,042 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 289 transitions. [2024-11-20 13:14:58,042 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 13:14:58,042 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 289 transitions. [2024-11-20 13:14:58,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-20 13:14:58,044 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:14:58,045 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 13:14:58,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 13:14:58,045 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:14:58,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:14:58,046 INFO L85 PathProgramCache]: Analyzing trace with hash -464960695, now seen corresponding path program 1 times [2024-11-20 13:14:58,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:14:58,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18381090] [2024-11-20 13:14:58,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:14:58,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:14:58,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:58,263 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 13:14:58,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:14:58,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18381090] [2024-11-20 13:14:58,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18381090] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:14:58,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:14:58,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 13:14:58,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493303344] [2024-11-20 13:14:58,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:14:58,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 13:14:58,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:14:58,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 13:14:58,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 13:14:58,266 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 13:14:58,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:14:58,305 INFO L93 Difference]: Finished difference Result 542 states and 764 transitions. [2024-11-20 13:14:58,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 13:14:58,306 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 13:14:58,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:14:58,308 INFO L225 Difference]: With dead ends: 542 [2024-11-20 13:14:58,308 INFO L226 Difference]: Without dead ends: 337 [2024-11-20 13:14:58,309 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 13:14:58,313 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 13:14:58,315 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 13:14:58,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2024-11-20 13:14:58,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2024-11-20 13:14:58,337 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 13:14:58,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 477 transitions. [2024-11-20 13:14:58,338 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 477 transitions. Word has length 83 [2024-11-20 13:14:58,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:14:58,340 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 477 transitions. [2024-11-20 13:14:58,340 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 13:14:58,341 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 477 transitions. [2024-11-20 13:14:58,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-20 13:14:58,346 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:14:58,347 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 13:14:58,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 13:14:58,347 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:14:58,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:14:58,348 INFO L85 PathProgramCache]: Analyzing trace with hash 2141840026, now seen corresponding path program 1 times [2024-11-20 13:14:58,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:14:58,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495355152] [2024-11-20 13:14:58,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:14:58,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:14:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:58,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-20 13:14:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:58,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-20 13:14:58,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:58,628 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 13:14:58,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:14:58,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495355152] [2024-11-20 13:14:58,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495355152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:14:58,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487920958] [2024-11-20 13:14:58,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:14:58,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:14:58,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:14:58,633 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 13:14:58,635 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 13:14:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:58,952 INFO L255 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-20 13:14:58,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:14:59,102 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 13:14:59,103 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 13:14:59,265 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 13:14:59,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487920958] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 13:14:59,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 13:14:59,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2024-11-20 13:14:59,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070906558] [2024-11-20 13:14:59,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 13:14:59,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 13:14:59,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:14:59,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 13:14:59,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-20 13:14:59,270 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 13:14:59,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:14:59,586 INFO L93 Difference]: Finished difference Result 798 states and 1133 transitions. [2024-11-20 13:14:59,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 13:14:59,587 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 13:14:59,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:14:59,592 INFO L225 Difference]: With dead ends: 798 [2024-11-20 13:14:59,592 INFO L226 Difference]: Without dead ends: 791 [2024-11-20 13:14:59,593 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 13:14:59,593 INFO L432 NwaCegarLoop]: 370 mSDtfsCounter, 1387 mSDsluCounter, 1451 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1403 SdHoareTripleChecker+Valid, 1821 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 13:14:59,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1403 Valid, 1821 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 13:14:59,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2024-11-20 13:14:59,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 788. [2024-11-20 13:14:59,613 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 13:14:59,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1108 transitions. [2024-11-20 13:14:59,616 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1108 transitions. Word has length 98 [2024-11-20 13:14:59,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:14:59,617 INFO L471 AbstractCegarLoop]: Abstraction has 788 states and 1108 transitions. [2024-11-20 13:14:59,617 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 13:14:59,617 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1108 transitions. [2024-11-20 13:14:59,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2024-11-20 13:14:59,630 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:14:59,630 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 13:14:59,641 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 13:14:59,831 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 13:14:59,831 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:14:59,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:14:59,832 INFO L85 PathProgramCache]: Analyzing trace with hash 421136348, now seen corresponding path program 1 times [2024-11-20 13:14:59,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:14:59,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789167992] [2024-11-20 13:14:59,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:14:59,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:15:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:15:00,527 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-20 13:15:00,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:15:00,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-20 13:15:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:15:00,539 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 4 proven. 162 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2024-11-20 13:15:00,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:15:00,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789167992] [2024-11-20 13:15:00,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789167992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:15:00,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573910552] [2024-11-20 13:15:00,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:15:00,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:15:00,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:15:00,543 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 13:15:00,544 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 13:15:01,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:15:01,137 INFO L255 TraceCheckSpWp]: Trace formula consists of 1658 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 13:15:01,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:15:01,588 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 13:15:01,588 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 13:15:02,029 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 13:15:02,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573910552] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 13:15:02,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 13:15:02,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-20 13:15:02,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211753264] [2024-11-20 13:15:02,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 13:15:02,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-20 13:15:02,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:15:02,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-20 13:15:02,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2024-11-20 13:15:02,033 INFO L87 Difference]: Start difference. First operand 788 states and 1108 transitions. Second operand has 15 states, 15 states have (on average 51.0) internal successors, (765), 14 states have internal predecessors, (765), 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 13:15:03,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:15:03,545 INFO L93 Difference]: Finished difference Result 2338 states and 3320 transitions. [2024-11-20 13:15:03,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-20 13:15:03,546 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 51.0) internal successors, (765), 14 states have internal predecessors, (765), 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 13:15:03,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:15:03,554 INFO L225 Difference]: With dead ends: 2338 [2024-11-20 13:15:03,555 INFO L226 Difference]: Without dead ends: 1876 [2024-11-20 13:15:03,556 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 640 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=240, Invalid=462, Unknown=0, NotChecked=0, Total=702 [2024-11-20 13:15:03,557 INFO L432 NwaCegarLoop]: 464 mSDtfsCounter, 5949 mSDsluCounter, 3038 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5949 SdHoareTripleChecker+Valid, 3502 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-20 13:15:03,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5949 Valid, 3502 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-20 13:15:03,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1876 states. [2024-11-20 13:15:03,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1876 to 1872. [2024-11-20 13:15:03,599 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 13:15:03,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 2645 transitions. [2024-11-20 13:15:03,605 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 2645 transitions. Word has length 323 [2024-11-20 13:15:03,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:15:03,606 INFO L471 AbstractCegarLoop]: Abstraction has 1872 states and 2645 transitions. [2024-11-20 13:15:03,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 51.0) internal successors, (765), 14 states have internal predecessors, (765), 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 13:15:03,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 2645 transitions. [2024-11-20 13:15:03,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2024-11-20 13:15:03,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:15:03,622 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 13:15:03,634 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 13:15:03,826 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 13:15:03,827 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:15:03,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:15:03,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1836572158, now seen corresponding path program 1 times [2024-11-20 13:15:03,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:15:03,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170807116] [2024-11-20 13:15:03,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:15:03,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms