./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_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-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 13:55:49,619 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 13:55:49,681 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 13:55:49,684 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 13:55:49,687 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 13:55:49,724 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 13:55:49,726 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 13:55:49,726 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 13:55:49,727 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 13:55:49,728 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 13:55:49,728 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 13:55:49,729 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 13:55:49,729 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 13:55:49,730 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 13:55:49,730 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 13:55:49,731 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 13:55:49,731 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 13:55:49,731 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 13:55:49,731 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 13:55:49,731 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 13:55:49,732 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 13:55:49,735 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 13:55:49,735 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 13:55:49,735 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 13:55:49,735 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 13:55:49,735 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 13:55:49,735 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 13:55:49,736 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 13:55:49,736 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 13:55:49,736 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 13:55:49,736 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 13:55:49,736 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 13:55:49,736 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 13:55:49,737 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 13:55:49,737 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 13:55:49,737 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 13:55:49,737 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 13:55:49,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 13:55:49,737 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 13:55:49,737 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 13:55:49,737 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 13:55:49,738 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 13:55:49,738 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdc85b042221b41aa26e62667e19ce1f6c246be9a2cb4f81fe8b15c8429db160 [2024-11-10 13:55:49,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 13:55:49,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 13:55:49,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 13:55:49,978 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 13:55:49,979 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 13:55:49,980 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test1-1.i [2024-11-10 13:55:51,336 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 13:55:51,551 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 13:55:51,552 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test1-1.i [2024-11-10 13:55:51,566 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0495f90c6/d709aacb30a64720941b5c4ffd705420/FLAGf08d01ac4 [2024-11-10 13:55:51,893 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0495f90c6/d709aacb30a64720941b5c4ffd705420 [2024-11-10 13:55:51,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 13:55:51,898 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 13:55:51,899 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 13:55:51,899 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 13:55:51,903 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 13:55:51,903 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:55:51" (1/1) ... [2024-11-10 13:55:51,904 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58c6f4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:55:51, skipping insertion in model container [2024-11-10 13:55:51,904 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:55:51" (1/1) ... [2024-11-10 13:55:51,943 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 13:55:52,244 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_JEN_nondet_test1-1.i[33519,33532] [2024-11-10 13:55:52,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 13:55:52,319 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 13:55:52,353 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_JEN_nondet_test1-1.i[33519,33532] [2024-11-10 13:55:52,399 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 13:55:52,432 INFO L204 MainTranslator]: Completed translation [2024-11-10 13:55:52,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:55:52 WrapperNode [2024-11-10 13:55:52,433 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 13:55:52,434 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 13:55:52,434 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 13:55:52,435 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 13:55:52,440 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:55:52" (1/1) ... [2024-11-10 13:55:52,462 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:55:52" (1/1) ... [2024-11-10 13:55:52,495 INFO L138 Inliner]: procedures = 176, calls = 169, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 779 [2024-11-10 13:55:52,495 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 13:55:52,496 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 13:55:52,496 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 13:55:52,496 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 13:55:52,506 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:55:52" (1/1) ... [2024-11-10 13:55:52,507 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:55:52" (1/1) ... [2024-11-10 13:55:52,513 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:55:52" (1/1) ... [2024-11-10 13:55:52,634 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]. [2024-11-10 13:55:52,635 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:55:52" (1/1) ... [2024-11-10 13:55:52,638 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:55:52" (1/1) ... [2024-11-10 13:55:52,661 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:55:52" (1/1) ... [2024-11-10 13:55:52,666 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:55:52" (1/1) ... [2024-11-10 13:55:52,668 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:55:52" (1/1) ... [2024-11-10 13:55:52,674 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:55:52" (1/1) ... [2024-11-10 13:55:52,681 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 13:55:52,682 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 13:55:52,682 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 13:55:52,682 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 13:55:52,683 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:55:52" (1/1) ... [2024-11-10 13:55:52,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 13:55:52,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 13:55:52,714 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 13:55:52,720 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 [2024-11-10 13:55:52,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 13:55:52,756 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 13:55:52,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 13:55:52,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 13:55:52,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-10 13:55:52,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-10 13:55:52,757 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-10 13:55:52,757 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-10 13:55:52,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 13:55:52,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 13:55:52,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-10 13:55:52,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-10 13:55:52,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-10 13:55:52,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-10 13:55:52,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 13:55:52,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 13:55:52,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 13:55:52,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 13:55:52,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 13:55:52,910 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 13:55:52,912 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 13:55:53,582 INFO L? ?]: Removed 194 outVars from TransFormulas that were not future-live. [2024-11-10 13:55:53,582 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 13:55:53,608 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 13:55:53,610 INFO L336 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-10 13:55:53,610 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 01:55:53 BoogieIcfgContainer [2024-11-10 13:55:53,611 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 13:55:53,612 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 13:55:53,613 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 13:55:53,616 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 13:55:53,616 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 01:55:51" (1/3) ... [2024-11-10 13:55:53,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd5c6e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 01:55:53, skipping insertion in model container [2024-11-10 13:55:53,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:55:52" (2/3) ... [2024-11-10 13:55:53,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd5c6e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 01:55:53, skipping insertion in model container [2024-11-10 13:55:53,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 01:55:53" (3/3) ... [2024-11-10 13:55:53,619 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_nondet_test1-1.i [2024-11-10 13:55:53,630 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 13:55:53,631 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 13:55:53,678 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 13:55:53,684 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;@311d4ace, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 13:55:53,684 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-10 13:55:53,689 INFO L276 IsEmpty]: Start isEmpty. Operand has 214 states, 208 states have (on average 1.5961538461538463) internal successors, (332), 209 states have internal predecessors, (332), 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) [2024-11-10 13:55:53,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-10 13:55:53,693 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:55:53,694 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 13:55:53,694 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:55:53,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:55:53,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1825169759, now seen corresponding path program 1 times [2024-11-10 13:55:53,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:55:53,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372686262] [2024-11-10 13:55:53,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:55:53,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:55:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:53,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 13:55:53,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:55:53,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372686262] [2024-11-10 13:55:53,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372686262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:55:53,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 13:55:53,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 13:55:53,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979405454] [2024-11-10 13:55:53,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:55:53,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 13:55:53,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:55:53,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 13:55:53,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 13:55:53,838 INFO L87 Difference]: Start difference. First operand has 214 states, 208 states have (on average 1.5961538461538463) internal successors, (332), 209 states have internal predecessors, (332), 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) [2024-11-10 13:55:53,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:55:53,982 INFO L93 Difference]: Finished difference Result 426 states and 674 transitions. [2024-11-10 13:55:53,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 13:55:53,986 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 [2024-11-10 13:55:53,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:55:53,992 INFO L225 Difference]: With dead ends: 426 [2024-11-10 13:55:53,993 INFO L226 Difference]: Without dead ends: 210 [2024-11-10 13:55:53,997 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 [2024-11-10 13:55:53,999 INFO L432 NwaCegarLoop]: 280 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 13:55:54,000 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 280 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 13:55:54,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-10 13:55:54,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2024-11-10 13:55:54,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 205 states have (on average 1.424390243902439) internal successors, (292), 205 states have internal predecessors, (292), 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) [2024-11-10 13:55:54,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 298 transitions. [2024-11-10 13:55:54,043 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 298 transitions. Word has length 8 [2024-11-10 13:55:54,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:55:54,044 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 298 transitions. [2024-11-10 13:55:54,044 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) [2024-11-10 13:55:54,044 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 298 transitions. [2024-11-10 13:55:54,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-10 13:55:54,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:55:54,045 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 13:55:54,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 13:55:54,046 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:55:54,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:55:54,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1484378600, now seen corresponding path program 1 times [2024-11-10 13:55:54,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:55:54,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278249192] [2024-11-10 13:55:54,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:55:54,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:55:54,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:54,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 13:55:54,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:55:54,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278249192] [2024-11-10 13:55:54,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278249192] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:55:54,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 13:55:54,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 13:55:54,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37304935] [2024-11-10 13:55:54,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:55:54,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 13:55:54,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:55:54,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 13:55:54,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 13:55:54,127 INFO L87 Difference]: Start difference. First operand 210 states and 298 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2024-11-10 13:55:54,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:55:54,223 INFO L93 Difference]: Finished difference Result 414 states and 590 transitions. [2024-11-10 13:55:54,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 13:55:54,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2024-11-10 13:55:54,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:55:54,226 INFO L225 Difference]: With dead ends: 414 [2024-11-10 13:55:54,226 INFO L226 Difference]: Without dead ends: 407 [2024-11-10 13:55:54,228 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 [2024-11-10 13:55:54,229 INFO L432 NwaCegarLoop]: 314 mSDtfsCounter, 276 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 13:55:54,229 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 585 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 13:55:54,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2024-11-10 13:55:54,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 212. [2024-11-10 13:55:54,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 207 states have (on average 1.4202898550724639) internal successors, (294), 207 states have internal predecessors, (294), 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) [2024-11-10 13:55:54,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 300 transitions. [2024-11-10 13:55:54,249 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 300 transitions. Word has length 10 [2024-11-10 13:55:54,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:55:54,249 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 300 transitions. [2024-11-10 13:55:54,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2024-11-10 13:55:54,249 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 300 transitions. [2024-11-10 13:55:54,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-10 13:55:54,251 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:55:54,251 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 13:55:54,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 13:55:54,252 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:55:54,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:55:54,252 INFO L85 PathProgramCache]: Analyzing trace with hash -2067098904, now seen corresponding path program 1 times [2024-11-10 13:55:54,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:55:54,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194252583] [2024-11-10 13:55:54,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:55:54,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:55:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:54,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 13:55:54,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:55:54,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194252583] [2024-11-10 13:55:54,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194252583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:55:54,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 13:55:54,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 13:55:54,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572909031] [2024-11-10 13:55:54,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:55:54,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 13:55:54,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:55:54,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 13:55:54,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 13:55:54,498 INFO L87 Difference]: Start difference. First operand 212 states and 300 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2024-11-10 13:55:54,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:55:54,587 INFO L93 Difference]: Finished difference Result 423 states and 599 transitions. [2024-11-10 13:55:54,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 13:55:54,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 87 [2024-11-10 13:55:54,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:55:54,588 INFO L225 Difference]: With dead ends: 423 [2024-11-10 13:55:54,589 INFO L226 Difference]: Without dead ends: 215 [2024-11-10 13:55:54,589 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 [2024-11-10 13:55:54,590 INFO L432 NwaCegarLoop]: 248 mSDtfsCounter, 105 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 13:55:54,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 659 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 13:55:54,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-10 13:55:54,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 212. [2024-11-10 13:55:54,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 207 states have (on average 1.3864734299516908) internal successors, (287), 207 states have internal predecessors, (287), 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) [2024-11-10 13:55:54,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 293 transitions. [2024-11-10 13:55:54,597 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 293 transitions. Word has length 87 [2024-11-10 13:55:54,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:55:54,597 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 293 transitions. [2024-11-10 13:55:54,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2024-11-10 13:55:54,597 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 293 transitions. [2024-11-10 13:55:54,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-10 13:55:54,599 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:55:54,599 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 13:55:54,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 13:55:54,599 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:55:54,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:55:54,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1897029487, now seen corresponding path program 1 times [2024-11-10 13:55:54,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:55:54,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831008196] [2024-11-10 13:55:54,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:55:54,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:55:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:54,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 13:55:54,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:55:54,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831008196] [2024-11-10 13:55:54,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831008196] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 13:55:54,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 13:55:54,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 13:55:54,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982971523] [2024-11-10 13:55:54,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 13:55:54,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 13:55:54,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:55:54,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 13:55:54,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 13:55:54,751 INFO L87 Difference]: Start difference. First operand 212 states and 293 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2024-11-10 13:55:54,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:55:54,831 INFO L93 Difference]: Finished difference Result 550 states and 772 transitions. [2024-11-10 13:55:54,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 13:55:54,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 87 [2024-11-10 13:55:54,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:55:54,833 INFO L225 Difference]: With dead ends: 550 [2024-11-10 13:55:54,833 INFO L226 Difference]: Without dead ends: 342 [2024-11-10 13:55:54,834 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 [2024-11-10 13:55:54,835 INFO L432 NwaCegarLoop]: 268 mSDtfsCounter, 134 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 13:55:54,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 528 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 13:55:54,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2024-11-10 13:55:54,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2024-11-10 13:55:54,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 337 states have (on average 1.4124629080118694) internal successors, (476), 337 states have internal predecessors, (476), 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) [2024-11-10 13:55:54,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 482 transitions. [2024-11-10 13:55:54,845 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 482 transitions. Word has length 87 [2024-11-10 13:55:54,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:55:54,845 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 482 transitions. [2024-11-10 13:55:54,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2024-11-10 13:55:54,846 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 482 transitions. [2024-11-10 13:55:54,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-10 13:55:54,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:55:54,848 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 13:55:54,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 13:55:54,848 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:55:54,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:55:54,849 INFO L85 PathProgramCache]: Analyzing trace with hash -217255737, now seen corresponding path program 1 times [2024-11-10 13:55:54,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:55:54,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385706981] [2024-11-10 13:55:54,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:55:54,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:55:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:55,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-10 13:55:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:55,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-10 13:55:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:55,109 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 13:55:55,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:55:55,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385706981] [2024-11-10 13:55:55,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385706981] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 13:55:55,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377785204] [2024-11-10 13:55:55,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:55:55,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 13:55:55,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 13:55:55,112 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) [2024-11-10 13:55:55,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 13:55:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:55,315 INFO L255 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 13:55:55,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 13:55:55,497 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 13:55:55,497 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 13:55:55,638 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 13:55:55,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377785204] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 13:55:55,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 13:55:55,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2024-11-10 13:55:55,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695797845] [2024-11-10 13:55:55,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 13:55:55,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 13:55:55,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:55:55,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 13:55:55,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-10 13:55:55,644 INFO L87 Difference]: Start difference. First operand 342 states and 482 transitions. Second operand has 8 states, 8 states have (on average 33.0) internal successors, (264), 7 states have internal predecessors, (264), 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) [2024-11-10 13:55:55,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:55:55,962 INFO L93 Difference]: Finished difference Result 811 states and 1146 transitions. [2024-11-10 13:55:55,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 13:55:55,963 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 33.0) internal successors, (264), 7 states have internal predecessors, (264), 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 102 [2024-11-10 13:55:55,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:55:55,968 INFO L225 Difference]: With dead ends: 811 [2024-11-10 13:55:55,969 INFO L226 Difference]: Without dead ends: 804 [2024-11-10 13:55:55,970 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-10 13:55:55,970 INFO L432 NwaCegarLoop]: 265 mSDtfsCounter, 1440 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1456 SdHoareTripleChecker+Valid, 1502 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-10 13:55:55,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1456 Valid, 1502 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-10 13:55:55,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2024-11-10 13:55:55,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 801. [2024-11-10 13:55:55,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 787 states have (on average 1.3939008894536213) internal successors, (1097), 787 states have internal predecessors, (1097), 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) [2024-11-10 13:55:56,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1121 transitions. [2024-11-10 13:55:56,001 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1121 transitions. Word has length 102 [2024-11-10 13:55:56,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:55:56,002 INFO L471 AbstractCegarLoop]: Abstraction has 801 states and 1121 transitions. [2024-11-10 13:55:56,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 33.0) internal successors, (264), 7 states have internal predecessors, (264), 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) [2024-11-10 13:55:56,002 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1121 transitions. [2024-11-10 13:55:56,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-11-10 13:55:56,008 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:55:56,009 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 13:55:56,023 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 13:55:56,209 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 [2024-11-10 13:55:56,210 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:55:56,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:55:56,210 INFO L85 PathProgramCache]: Analyzing trace with hash -2040771456, now seen corresponding path program 1 times [2024-11-10 13:55:56,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:55:56,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427632686] [2024-11-10 13:55:56,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:55:56,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 13:55:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:56,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-10 13:55:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:56,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-10 13:55:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:56,829 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 8 proven. 165 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2024-11-10 13:55:56,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 13:55:56,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427632686] [2024-11-10 13:55:56,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427632686] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 13:55:56,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141742144] [2024-11-10 13:55:56,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:55:56,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 13:55:56,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 13:55:56,838 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) [2024-11-10 13:55:56,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 13:55:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 13:55:57,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 1668 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 13:55:57,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 13:55:57,705 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 464 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 13:55:57,705 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 13:55:58,051 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 464 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 13:55:58,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141742144] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 13:55:58,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 13:55:58,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-10 13:55:58,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207013502] [2024-11-10 13:55:58,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 13:55:58,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 13:55:58,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 13:55:58,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 13:55:58,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2024-11-10 13:55:58,055 INFO L87 Difference]: Start difference. First operand 801 states and 1121 transitions. Second operand has 15 states, 15 states have (on average 52.6) internal successors, (789), 14 states have internal predecessors, (789), 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) [2024-11-10 13:55:59,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 13:55:59,392 INFO L93 Difference]: Finished difference Result 2377 states and 3359 transitions. [2024-11-10 13:55:59,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-10 13:55:59,392 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 52.6) internal successors, (789), 14 states have internal predecessors, (789), 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 333 [2024-11-10 13:55:59,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 13:55:59,398 INFO L225 Difference]: With dead ends: 2377 [2024-11-10 13:55:59,398 INFO L226 Difference]: Without dead ends: 1907 [2024-11-10 13:55:59,399 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 670 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=240, Invalid=462, Unknown=0, NotChecked=0, Total=702 [2024-11-10 13:55:59,400 INFO L432 NwaCegarLoop]: 428 mSDtfsCounter, 7079 mSDsluCounter, 2589 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7079 SdHoareTripleChecker+Valid, 3017 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-10 13:55:59,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7079 Valid, 3017 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-10 13:55:59,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1907 states. [2024-11-10 13:55:59,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1907 to 1904. [2024-11-10 13:55:59,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1904 states, 1890 states have (on average 1.4037037037037037) internal successors, (2653), 1890 states have internal predecessors, (2653), 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) [2024-11-10 13:55:59,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1904 states to 1904 states and 2677 transitions. [2024-11-10 13:55:59,430 INFO L78 Accepts]: Start accepts. Automaton has 1904 states and 2677 transitions. Word has length 333 [2024-11-10 13:55:59,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 13:55:59,431 INFO L471 AbstractCegarLoop]: Abstraction has 1904 states and 2677 transitions. [2024-11-10 13:55:59,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 52.6) internal successors, (789), 14 states have internal predecessors, (789), 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) [2024-11-10 13:55:59,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1904 states and 2677 transitions. [2024-11-10 13:55:59,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 798 [2024-11-10 13:55:59,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 13:55:59,442 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 13:55:59,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 13:55:59,642 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 [2024-11-10 13:55:59,643 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 13:55:59,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 13:55:59,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1531821119, now seen corresponding path program 1 times [2024-11-10 13:55:59,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 13:55:59,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223990509] [2024-11-10 13:55:59,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 13:55:59,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms