./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_JEN_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 60f6803c5e3744d9299e1af81cd011414f5ac623b556345642fa85a1d93686e4 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 14:47:36,446 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 14:47:36,522 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 14:47:36,529 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 14:47:36,530 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 14:47:36,565 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 14:47:36,566 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 14:47:36,566 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 14:47:36,567 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 14:47:36,567 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 14:47:36,568 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 14:47:36,569 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 14:47:36,569 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 14:47:36,571 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 14:47:36,572 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 14:47:36,572 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 14:47:36,573 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 14:47:36,573 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 14:47:36,573 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 14:47:36,574 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 14:47:36,574 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 14:47:36,574 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 14:47:36,575 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 14:47:36,575 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 14:47:36,575 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 14:47:36,576 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 14:47:36,576 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 14:47:36,576 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 14:47:36,577 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 14:47:36,577 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 14:47:36,577 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 14:47:36,578 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 14:47:36,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:47:36,578 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 14:47:36,579 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 14:47:36,579 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 14:47:36,579 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 14:47:36,580 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 14:47:36,580 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 14:47:36,580 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 14:47:36,581 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 14:47:36,582 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 14:47:36,583 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60f6803c5e3744d9299e1af81cd011414f5ac623b556345642fa85a1d93686e4 [2024-10-24 14:47:36,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 14:47:36,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 14:47:36,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 14:47:36,893 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 14:47:36,895 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 14:47:36,897 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i [2024-10-24 14:47:38,482 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 14:47:38,778 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 14:47:38,779 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i [2024-10-24 14:47:38,797 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24a52425e/9939edc459ac45a8881eade00e5ec93f/FLAGc911b698a [2024-10-24 14:47:38,810 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24a52425e/9939edc459ac45a8881eade00e5ec93f [2024-10-24 14:47:38,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 14:47:38,814 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 14:47:38,815 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 14:47:38,815 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 14:47:38,820 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 14:47:38,821 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:47:38" (1/1) ... [2024-10-24 14:47:38,822 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47f4dc86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:38, skipping insertion in model container [2024-10-24 14:47:38,822 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:47:38" (1/1) ... [2024-10-24 14:47:38,880 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 14:47:39,309 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i[33021,33034] [2024-10-24 14:47:39,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:47:39,451 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 14:47:39,496 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test1-2.i[33021,33034] [2024-10-24 14:47:39,555 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:47:39,601 INFO L204 MainTranslator]: Completed translation [2024-10-24 14:47:39,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:39 WrapperNode [2024-10-24 14:47:39,602 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 14:47:39,603 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 14:47:39,604 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 14:47:39,604 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 14:47:39,612 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:39" (1/1) ... [2024-10-24 14:47:39,653 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:39" (1/1) ... [2024-10-24 14:47:39,724 INFO L138 Inliner]: procedures = 176, calls = 230, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1004 [2024-10-24 14:47:39,725 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 14:47:39,726 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 14:47:39,726 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 14:47:39,726 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 14:47:39,741 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:39" (1/1) ... [2024-10-24 14:47:39,741 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:39" (1/1) ... [2024-10-24 14:47:39,750 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:39" (1/1) ... [2024-10-24 14:47:39,838 INFO L175 MemorySlicer]: Split 206 memory accesses to 2 slices as follows [2, 204]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 50 writes are split as follows [0, 50]. [2024-10-24 14:47:39,839 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:39" (1/1) ... [2024-10-24 14:47:39,839 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:39" (1/1) ... [2024-10-24 14:47:39,884 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:39" (1/1) ... [2024-10-24 14:47:39,899 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:39" (1/1) ... [2024-10-24 14:47:39,912 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:39" (1/1) ... [2024-10-24 14:47:39,920 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:39" (1/1) ... [2024-10-24 14:47:39,938 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 14:47:39,943 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 14:47:39,943 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 14:47:39,943 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 14:47:39,944 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:39" (1/1) ... [2024-10-24 14:47:39,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:47:39,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:47:39,978 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 14:47:39,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 14:47:40,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 14:47:40,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 14:47:40,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 14:47:40,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 14:47:40,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 14:47:40,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 14:47:40,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-24 14:47:40,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-24 14:47:40,031 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-24 14:47:40,031 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-24 14:47:40,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 14:47:40,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 14:47:40,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 14:47:40,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 14:47:40,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-24 14:47:40,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-24 14:47:40,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 14:47:40,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 14:47:40,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 14:47:40,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 14:47:40,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 14:47:40,218 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 14:47:40,220 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 14:47:41,333 INFO L? ?]: Removed 233 outVars from TransFormulas that were not future-live. [2024-10-24 14:47:41,334 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 14:47:41,378 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 14:47:41,378 INFO L314 CfgBuilder]: Removed 40 assume(true) statements. [2024-10-24 14:47:41,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:47:41 BoogieIcfgContainer [2024-10-24 14:47:41,379 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 14:47:41,383 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 14:47:41,383 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 14:47:41,386 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 14:47:41,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:47:38" (1/3) ... [2024-10-24 14:47:41,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b17896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:47:41, skipping insertion in model container [2024-10-24 14:47:41,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:47:39" (2/3) ... [2024-10-24 14:47:41,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b17896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:47:41, skipping insertion in model container [2024-10-24 14:47:41,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:47:41" (3/3) ... [2024-10-24 14:47:41,390 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test1-2.i [2024-10-24 14:47:41,407 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 14:47:41,407 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 14:47:41,467 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 14:47:41,473 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;@7e1c11a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 14:47:41,473 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 14:47:41,478 INFO L276 IsEmpty]: Start isEmpty. Operand has 263 states, 246 states have (on average 1.6341463414634145) internal successors, (402), 257 states have internal predecessors, (402), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-24 14:47:41,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-24 14:47:41,485 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:47:41,485 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:47:41,485 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:47:41,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:47:41,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1205597257, now seen corresponding path program 1 times [2024-10-24 14:47:41,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:47:41,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772288857] [2024-10-24 14:47:41,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:41,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:47:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:41,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:47:41,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:47:41,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772288857] [2024-10-24 14:47:41,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772288857] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:47:41,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:47:41,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 14:47:41,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534222468] [2024-10-24 14:47:41,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:47:41,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 14:47:41,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:47:41,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 14:47:41,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 14:47:41,758 INFO L87 Difference]: Start difference. First operand has 263 states, 246 states have (on average 1.6341463414634145) internal successors, (402), 257 states have internal predecessors, (402), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:47:41,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:47:41,840 INFO L93 Difference]: Finished difference Result 525 states and 865 transitions. [2024-10-24 14:47:41,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 14:47:41,842 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-24 14:47:41,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:47:41,852 INFO L225 Difference]: With dead ends: 525 [2024-10-24 14:47:41,852 INFO L226 Difference]: Without dead ends: 227 [2024-10-24 14:47:41,856 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 [2024-10-24 14:47:41,858 INFO L432 NwaCegarLoop]: 378 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 14:47:41,859 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 378 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 14:47:41,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-10-24 14:47:41,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2024-10-24 14:47:41,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 211 states have (on average 1.4597156398104265) internal successors, (308), 221 states have internal predecessors, (308), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-24 14:47:41,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 334 transitions. [2024-10-24 14:47:41,903 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 334 transitions. Word has length 9 [2024-10-24 14:47:41,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:47:41,904 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 334 transitions. [2024-10-24 14:47:41,904 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:47:41,904 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 334 transitions. [2024-10-24 14:47:41,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-24 14:47:41,906 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:47:41,906 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:47:41,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 14:47:41,906 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:47:41,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:47:41,907 INFO L85 PathProgramCache]: Analyzing trace with hash 2024028022, now seen corresponding path program 1 times [2024-10-24 14:47:41,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:47:41,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797898709] [2024-10-24 14:47:41,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:41,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:47:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:41,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:47:41,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:47:41,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797898709] [2024-10-24 14:47:41,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797898709] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:47:41,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:47:41,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 14:47:41,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859561807] [2024-10-24 14:47:41,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:47:41,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 14:47:41,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:47:41,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 14:47:41,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 14:47:42,000 INFO L87 Difference]: Start difference. First operand 227 states and 334 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:47:42,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:47:42,060 INFO L93 Difference]: Finished difference Result 450 states and 664 transitions. [2024-10-24 14:47:42,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 14:47:42,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-24 14:47:42,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:47:42,064 INFO L225 Difference]: With dead ends: 450 [2024-10-24 14:47:42,064 INFO L226 Difference]: Without dead ends: 421 [2024-10-24 14:47:42,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 14:47:42,066 INFO L432 NwaCegarLoop]: 371 mSDtfsCounter, 274 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 14:47:42,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 698 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 14:47:42,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2024-10-24 14:47:42,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 228. [2024-10-24 14:47:42,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 212 states have (on average 1.4575471698113207) internal successors, (309), 222 states have internal predecessors, (309), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-24 14:47:42,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 335 transitions. [2024-10-24 14:47:42,094 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 335 transitions. Word has length 9 [2024-10-24 14:47:42,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:47:42,094 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 335 transitions. [2024-10-24 14:47:42,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:47:42,095 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 335 transitions. [2024-10-24 14:47:42,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-24 14:47:42,098 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:47:42,098 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:47:42,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 14:47:42,098 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:47:42,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:47:42,099 INFO L85 PathProgramCache]: Analyzing trace with hash 782573354, now seen corresponding path program 1 times [2024-10-24 14:47:42,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:47:42,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226814545] [2024-10-24 14:47:42,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:42,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:47:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:42,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:47:42,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:47:42,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226814545] [2024-10-24 14:47:42,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226814545] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:47:42,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:47:42,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:47:42,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178670446] [2024-10-24 14:47:42,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:47:42,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:47:42,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:47:42,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:47:42,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:47:42,494 INFO L87 Difference]: Start difference. First operand 228 states and 335 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:47:42,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:47:42,606 INFO L93 Difference]: Finished difference Result 457 states and 671 transitions. [2024-10-24 14:47:42,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:47:42,606 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-10-24 14:47:42,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:47:42,608 INFO L225 Difference]: With dead ends: 457 [2024-10-24 14:47:42,608 INFO L226 Difference]: Without dead ends: 231 [2024-10-24 14:47:42,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:47:42,613 INFO L432 NwaCegarLoop]: 303 mSDtfsCounter, 105 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:47:42,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 818 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:47:42,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-10-24 14:47:42,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 228. [2024-10-24 14:47:42,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 212 states have (on average 1.4245283018867925) internal successors, (302), 222 states have internal predecessors, (302), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-24 14:47:42,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 328 transitions. [2024-10-24 14:47:42,628 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 328 transitions. Word has length 84 [2024-10-24 14:47:42,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:47:42,628 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 328 transitions. [2024-10-24 14:47:42,629 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:47:42,629 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 328 transitions. [2024-10-24 14:47:42,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-24 14:47:42,631 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:47:42,631 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:47:42,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 14:47:42,632 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:47:42,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:47:42,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1807075382, now seen corresponding path program 1 times [2024-10-24 14:47:42,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:47:42,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059410544] [2024-10-24 14:47:42,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:42,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:47:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:42,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:47:42,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:47:42,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059410544] [2024-10-24 14:47:42,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059410544] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:47:42,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:47:42,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 14:47:42,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945724707] [2024-10-24 14:47:42,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:47:42,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 14:47:42,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:47:42,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 14:47:42,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 14:47:42,822 INFO L87 Difference]: Start difference. First operand 228 states and 328 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:47:42,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:47:42,879 INFO L93 Difference]: Finished difference Result 583 states and 843 transitions. [2024-10-24 14:47:42,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 14:47:42,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-10-24 14:47:42,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:47:42,882 INFO L225 Difference]: With dead ends: 583 [2024-10-24 14:47:42,883 INFO L226 Difference]: Without dead ends: 357 [2024-10-24 14:47:42,886 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 14:47:42,887 INFO L432 NwaCegarLoop]: 323 mSDtfsCounter, 134 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 14:47:42,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 639 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 14:47:42,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2024-10-24 14:47:42,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2024-10-24 14:47:42,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 341 states have (on average 1.436950146627566) internal successors, (490), 351 states have internal predecessors, (490), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-24 14:47:42,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 516 transitions. [2024-10-24 14:47:42,901 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 516 transitions. Word has length 84 [2024-10-24 14:47:42,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:47:42,901 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 516 transitions. [2024-10-24 14:47:42,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:47:42,902 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 516 transitions. [2024-10-24 14:47:42,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-24 14:47:42,904 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:47:42,904 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:47:42,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 14:47:42,905 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:47:42,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:47:42,905 INFO L85 PathProgramCache]: Analyzing trace with hash -563635627, now seen corresponding path program 1 times [2024-10-24 14:47:42,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:47:42,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076884213] [2024-10-24 14:47:42,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:42,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:47:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:43,188 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 14:47:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:43,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 14:47:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:43,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:47:43,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:47:43,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076884213] [2024-10-24 14:47:43,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076884213] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:47:43,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042753587] [2024-10-24 14:47:43,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:43,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:47:43,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:47:43,202 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:47:43,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 14:47:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:43,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 14:47:43,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:47:43,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:47:43,646 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 14:47:43,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:47:43,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042753587] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 14:47:43,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 14:47:43,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2024-10-24 14:47:43,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443601335] [2024-10-24 14:47:43,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 14:47:43,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 14:47:43,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:47:43,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 14:47:43,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-10-24 14:47:43,821 INFO L87 Difference]: Start difference. First operand 357 states and 516 transitions. Second operand has 8 states, 8 states have (on average 31.75) internal successors, (254), 7 states have internal predecessors, (254), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-24 14:47:44,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:47:44,140 INFO L93 Difference]: Finished difference Result 839 states and 1212 transitions. [2024-10-24 14:47:44,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:47:44,141 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 31.75) internal successors, (254), 7 states have internal predecessors, (254), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 97 [2024-10-24 14:47:44,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:47:44,148 INFO L225 Difference]: With dead ends: 839 [2024-10-24 14:47:44,149 INFO L226 Difference]: Without dead ends: 810 [2024-10-24 14:47:44,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-10-24 14:47:44,151 INFO L432 NwaCegarLoop]: 358 mSDtfsCounter, 1865 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1881 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:47:44,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1881 Valid, 1505 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:47:44,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2024-10-24 14:47:44,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 808. [2024-10-24 14:47:44,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 783 states have (on average 1.408684546615581) internal successors, (1103), 793 states have internal predecessors, (1103), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-24 14:47:44,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1147 transitions. [2024-10-24 14:47:44,186 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1147 transitions. Word has length 97 [2024-10-24 14:47:44,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:47:44,189 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1147 transitions. [2024-10-24 14:47:44,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.75) internal successors, (254), 7 states have internal predecessors, (254), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-24 14:47:44,189 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1147 transitions. [2024-10-24 14:47:44,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2024-10-24 14:47:44,197 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:47:44,198 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:47:44,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 14:47:44,401 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 [2024-10-24 14:47:44,401 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:47:44,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:47:44,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1908137271, now seen corresponding path program 1 times [2024-10-24 14:47:44,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:47:44,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836775255] [2024-10-24 14:47:44,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:44,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:47:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:45,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-24 14:47:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:45,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 14:47:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:45,486 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:47:45,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:47:45,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836775255] [2024-10-24 14:47:45,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836775255] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:47:45,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054474880] [2024-10-24 14:47:45,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:45,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:47:45,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:47:45,490 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:47:45,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 14:47:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:46,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 1659 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-24 14:47:46,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:47:46,531 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:47:46,532 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 14:47:46,962 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 0 proven. 448 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:47:46,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054474880] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 14:47:46,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 14:47:46,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2024-10-24 14:47:46,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540499930] [2024-10-24 14:47:46,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 14:47:46,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 14:47:46,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:47:46,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 14:47:46,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2024-10-24 14:47:46,967 INFO L87 Difference]: Start difference. First operand 808 states and 1147 transitions. Second operand has 14 states, 14 states have (on average 50.285714285714285) internal successors, (704), 13 states have internal predecessors, (704), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-24 14:47:47,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:47:47,495 INFO L93 Difference]: Finished difference Result 2003 states and 2877 transitions. [2024-10-24 14:47:47,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 14:47:47,498 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 50.285714285714285) internal successors, (704), 13 states have internal predecessors, (704), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 322 [2024-10-24 14:47:47,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:47:47,509 INFO L225 Difference]: With dead ends: 2003 [2024-10-24 14:47:47,509 INFO L226 Difference]: Without dead ends: 1974 [2024-10-24 14:47:47,510 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 640 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2024-10-24 14:47:47,511 INFO L432 NwaCegarLoop]: 358 mSDtfsCounter, 4926 mSDsluCounter, 2840 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4978 SdHoareTripleChecker+Valid, 3198 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:47:47,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4978 Valid, 3198 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 14:47:47,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2024-10-24 14:47:47,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1972. [2024-10-24 14:47:47,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1972 states, 1929 states have (on average 1.4053913945049248) internal successors, (2711), 1939 states have internal predecessors, (2711), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 31 states have call predecessors, (40), 40 states have call successors, (40) [2024-10-24 14:47:47,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1972 states to 1972 states and 2791 transitions. [2024-10-24 14:47:47,562 INFO L78 Accepts]: Start accepts. Automaton has 1972 states and 2791 transitions. Word has length 322 [2024-10-24 14:47:47,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:47:47,563 INFO L471 AbstractCegarLoop]: Abstraction has 1972 states and 2791 transitions. [2024-10-24 14:47:47,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 50.285714285714285) internal successors, (704), 13 states have internal predecessors, (704), 4 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-24 14:47:47,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1972 states and 2791 transitions. [2024-10-24 14:47:47,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2024-10-24 14:47:47,580 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:47:47,580 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:47:47,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 14:47:47,781 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 [2024-10-24 14:47:47,782 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:47:47,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:47:47,782 INFO L85 PathProgramCache]: Analyzing trace with hash -867708681, now seen corresponding path program 2 times [2024-10-24 14:47:47,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:47:47,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116528429] [2024-10-24 14:47:47,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:47,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms