./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_vector_difference_ground.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/array-examples/standard_vector_difference_ground.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 7263b2c7ab28b481620789bcaa79c3e966cab937e9920a12d1160d17415db571 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 17:58:59,824 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 17:58:59,895 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 17:58:59,905 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 17:58:59,907 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 17:58:59,935 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 17:58:59,936 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 17:58:59,937 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 17:58:59,937 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 17:58:59,938 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 17:58:59,938 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 17:58:59,939 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 17:58:59,940 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 17:58:59,940 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 17:58:59,941 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 17:58:59,941 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 17:58:59,941 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 17:58:59,942 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 17:58:59,942 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 17:58:59,942 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 17:58:59,943 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 17:58:59,943 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 17:58:59,943 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 17:58:59,944 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 17:58:59,944 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 17:58:59,944 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 17:58:59,945 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 17:58:59,945 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 17:58:59,945 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 17:58:59,946 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 17:58:59,946 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 17:58:59,946 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 17:58:59,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 17:58:59,947 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 17:58:59,947 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 17:58:59,948 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 17:58:59,948 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 17:58:59,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 17:58:59,948 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 17:58:59,949 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 17:58:59,949 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 17:58:59,953 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 17:58:59,953 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7263b2c7ab28b481620789bcaa79c3e966cab937e9920a12d1160d17415db571 [2024-11-09 17:59:00,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 17:59:00,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 17:59:00,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 17:59:00,219 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 17:59:00,219 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 17:59:00,220 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_vector_difference_ground.i [2024-11-09 17:59:01,732 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 17:59:01,928 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 17:59:01,928 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_vector_difference_ground.i [2024-11-09 17:59:01,935 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b99bdc3f/62f9be986ede4547b7fc26b67d0394d2/FLAGeb5b5a73b [2024-11-09 17:59:01,947 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b99bdc3f/62f9be986ede4547b7fc26b67d0394d2 [2024-11-09 17:59:01,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 17:59:01,951 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 17:59:01,952 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 17:59:01,952 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 17:59:01,957 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 17:59:01,958 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:59:01" (1/1) ... [2024-11-09 17:59:01,958 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@582429db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:59:01, skipping insertion in model container [2024-11-09 17:59:01,959 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:59:01" (1/1) ... [2024-11-09 17:59:01,983 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 17:59:02,165 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/array-examples/standard_vector_difference_ground.i[826,839] [2024-11-09 17:59:02,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 17:59:02,197 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 17:59:02,208 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/array-examples/standard_vector_difference_ground.i[826,839] [2024-11-09 17:59:02,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 17:59:02,238 INFO L204 MainTranslator]: Completed translation [2024-11-09 17:59:02,239 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:59:02 WrapperNode [2024-11-09 17:59:02,239 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 17:59:02,240 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 17:59:02,241 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 17:59:02,241 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 17:59:02,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:59:02" (1/1) ... [2024-11-09 17:59:02,254 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:59:02" (1/1) ... [2024-11-09 17:59:02,272 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2024-11-09 17:59:02,274 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 17:59:02,275 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 17:59:02,275 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 17:59:02,275 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 17:59:02,285 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:59:02" (1/1) ... [2024-11-09 17:59:02,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:59:02" (1/1) ... [2024-11-09 17:59:02,287 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:59:02" (1/1) ... [2024-11-09 17:59:02,299 INFO L175 MemorySlicer]: Split 10 memory accesses to 4 slices as follows [2, 2, 3, 3]. 30 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-11-09 17:59:02,300 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:59:02" (1/1) ... [2024-11-09 17:59:02,300 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:59:02" (1/1) ... [2024-11-09 17:59:02,310 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:59:02" (1/1) ... [2024-11-09 17:59:02,314 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:59:02" (1/1) ... [2024-11-09 17:59:02,316 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:59:02" (1/1) ... [2024-11-09 17:59:02,317 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:59:02" (1/1) ... [2024-11-09 17:59:02,319 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 17:59:02,323 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 17:59:02,323 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 17:59:02,323 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 17:59:02,324 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:59:02" (1/1) ... [2024-11-09 17:59:02,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 17:59:02,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:59:02,364 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) [2024-11-09 17:59:02,380 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 [2024-11-09 17:59:02,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 17:59:02,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 17:59:02,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 17:59:02,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 17:59:02,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 17:59:02,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 17:59:02,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 17:59:02,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 17:59:02,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 17:59:02,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 17:59:02,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 17:59:02,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 17:59:02,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 17:59:02,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 17:59:02,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 17:59:02,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 17:59:02,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 17:59:02,535 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 17:59:02,537 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 17:59:02,704 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L17: call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset;call ULTIMATE.dealloc(main_~#b~0#1.base, main_~#b~0#1.offset);havoc main_~#b~0#1.base, main_~#b~0#1.offset;call ULTIMATE.dealloc(main_~#c~0#1.base, main_~#c~0#1.offset);havoc main_~#c~0#1.base, main_~#c~0#1.offset; [2024-11-09 17:59:02,714 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-09 17:59:02,716 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 17:59:02,729 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 17:59:02,729 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 17:59:02,730 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 05:59:02 BoogieIcfgContainer [2024-11-09 17:59:02,730 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 17:59:02,733 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 17:59:02,733 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 17:59:02,737 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 17:59:02,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:59:01" (1/3) ... [2024-11-09 17:59:02,739 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b011e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:59:02, skipping insertion in model container [2024-11-09 17:59:02,739 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:59:02" (2/3) ... [2024-11-09 17:59:02,740 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b011e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:59:02, skipping insertion in model container [2024-11-09 17:59:02,740 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 05:59:02" (3/3) ... [2024-11-09 17:59:02,741 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_vector_difference_ground.i [2024-11-09 17:59:02,758 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 17:59:02,759 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 17:59:02,823 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 17:59:02,833 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;@ff72c78, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 17:59:02,834 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 17:59:02,838 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 19 states have internal predecessors, (26), 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) [2024-11-09 17:59:02,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 17:59:02,844 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:59:02,845 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:59:02,846 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:59:02,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:59:02,853 INFO L85 PathProgramCache]: Analyzing trace with hash 886668597, now seen corresponding path program 1 times [2024-11-09 17:59:02,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:59:02,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948231291] [2024-11-09 17:59:02,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:59:02,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:59:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:59:03,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 17:59:03,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:59:03,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948231291] [2024-11-09 17:59:03,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948231291] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 17:59:03,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 17:59:03,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 17:59:03,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897012001] [2024-11-09 17:59:03,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 17:59:03,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 17:59:03,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:59:03,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 17:59:03,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 17:59:03,074 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 19 states have internal predecessors, (26), 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) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2024-11-09 17:59:03,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:59:03,084 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2024-11-09 17:59:03,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 17:59:03,086 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2024-11-09 17:59:03,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:59:03,091 INFO L225 Difference]: With dead ends: 35 [2024-11-09 17:59:03,091 INFO L226 Difference]: Without dead ends: 15 [2024-11-09 17:59:03,093 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 [2024-11-09 17:59:03,097 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:59:03,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:59:03,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-09 17:59:03,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-09 17:59:03,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 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) [2024-11-09 17:59:03,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-11-09 17:59:03,127 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2024-11-09 17:59:03,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:59:03,128 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-11-09 17:59:03,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2024-11-09 17:59:03,128 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-11-09 17:59:03,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 17:59:03,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:59:03,129 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:59:03,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 17:59:03,130 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:59:03,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:59:03,130 INFO L85 PathProgramCache]: Analyzing trace with hash 752241008, now seen corresponding path program 1 times [2024-11-09 17:59:03,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:59:03,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69550600] [2024-11-09 17:59:03,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:59:03,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:59:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:59:03,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 17:59:03,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:59:03,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69550600] [2024-11-09 17:59:03,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69550600] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 17:59:03,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 17:59:03,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 17:59:03,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392453183] [2024-11-09 17:59:03,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 17:59:03,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 17:59:03,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:59:03,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 17:59:03,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 17:59:03,237 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2024-11-09 17:59:03,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:59:03,257 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2024-11-09 17:59:03,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 17:59:03,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2024-11-09 17:59:03,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:59:03,259 INFO L225 Difference]: With dead ends: 30 [2024-11-09 17:59:03,259 INFO L226 Difference]: Without dead ends: 19 [2024-11-09 17:59:03,260 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 [2024-11-09 17:59:03,261 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 1 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:59:03,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 26 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:59:03,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-09 17:59:03,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-09 17:59:03,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 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) [2024-11-09 17:59:03,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2024-11-09 17:59:03,268 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 13 [2024-11-09 17:59:03,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:59:03,269 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2024-11-09 17:59:03,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2024-11-09 17:59:03,270 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2024-11-09 17:59:03,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 17:59:03,270 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:59:03,271 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:59:03,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 17:59:03,271 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:59:03,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:59:03,275 INFO L85 PathProgramCache]: Analyzing trace with hash -283035344, now seen corresponding path program 1 times [2024-11-09 17:59:03,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:59:03,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19380648] [2024-11-09 17:59:03,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:59:03,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:59:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:59:03,452 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 17:59:03,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:59:03,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19380648] [2024-11-09 17:59:03,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19380648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:59:03,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970776438] [2024-11-09 17:59:03,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:59:03,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:59:03,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:59:03,459 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) [2024-11-09 17:59:03,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 17:59:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:59:03,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 17:59:03,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:59:03,590 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 17:59:03,590 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:59:03,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 17:59:03,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970776438] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:59:03,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:59:03,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-09 17:59:03,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403355690] [2024-11-09 17:59:03,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:59:03,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 17:59:03,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:59:03,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 17:59:03,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 17:59:03,626 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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) [2024-11-09 17:59:03,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:59:03,673 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2024-11-09 17:59:03,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 17:59:03,674 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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 17 [2024-11-09 17:59:03,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:59:03,676 INFO L225 Difference]: With dead ends: 44 [2024-11-09 17:59:03,676 INFO L226 Difference]: Without dead ends: 31 [2024-11-09 17:59:03,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-09 17:59:03,677 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 5 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:59:03,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 52 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:59:03,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-09 17:59:03,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-09 17:59:03,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 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) [2024-11-09 17:59:03,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2024-11-09 17:59:03,686 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 17 [2024-11-09 17:59:03,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:59:03,686 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2024-11-09 17:59:03,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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) [2024-11-09 17:59:03,686 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2024-11-09 17:59:03,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-09 17:59:03,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:59:03,687 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:59:03,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 17:59:03,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:59:03,892 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:59:03,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:59:03,893 INFO L85 PathProgramCache]: Analyzing trace with hash -8768144, now seen corresponding path program 2 times [2024-11-09 17:59:03,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:59:03,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937636174] [2024-11-09 17:59:03,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:59:03,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:59:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:59:04,177 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 17:59:04,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:59:04,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937636174] [2024-11-09 17:59:04,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937636174] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:59:04,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082327155] [2024-11-09 17:59:04,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 17:59:04,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:59:04,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:59:04,181 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) [2024-11-09 17:59:04,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 17:59:04,296 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 17:59:04,297 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:59:04,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 17:59:04,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:59:04,336 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 17:59:04,340 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:59:04,436 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-09 17:59:04,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082327155] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:59:04,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:59:04,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-09 17:59:04,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655518533] [2024-11-09 17:59:04,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:59:04,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 17:59:04,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:59:04,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 17:59:04,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-09 17:59:04,445 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 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) [2024-11-09 17:59:04,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:59:04,502 INFO L93 Difference]: Finished difference Result 74 states and 89 transitions. [2024-11-09 17:59:04,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 17:59:04,503 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 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 29 [2024-11-09 17:59:04,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:59:04,504 INFO L225 Difference]: With dead ends: 74 [2024-11-09 17:59:04,504 INFO L226 Difference]: Without dead ends: 55 [2024-11-09 17:59:04,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-09 17:59:04,505 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 17 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 17:59:04,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 80 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 17:59:04,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-09 17:59:04,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2024-11-09 17:59:04,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.0555555555555556) internal successors, (57), 54 states have internal predecessors, (57), 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) [2024-11-09 17:59:04,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2024-11-09 17:59:04,513 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 29 [2024-11-09 17:59:04,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:59:04,513 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2024-11-09 17:59:04,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 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) [2024-11-09 17:59:04,514 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2024-11-09 17:59:04,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-09 17:59:04,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:59:04,515 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:59:04,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 17:59:04,719 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,SelfDestructingSolverStorable3 [2024-11-09 17:59:04,720 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:59:04,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:59:04,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1011267696, now seen corresponding path program 3 times [2024-11-09 17:59:04,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:59:04,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104794727] [2024-11-09 17:59:04,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:59:04,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:59:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:59:05,184 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-09 17:59:05,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:59:05,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104794727] [2024-11-09 17:59:05,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104794727] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:59:05,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324676786] [2024-11-09 17:59:05,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 17:59:05,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:59:05,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:59:05,188 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:59:05,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 17:59:05,590 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-09 17:59:05,590 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:59:05,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 17:59:05,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:59:05,658 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 20 proven. 110 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-09 17:59:05,659 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:59:05,927 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-09 17:59:05,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324676786] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:59:05,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:59:05,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 26 [2024-11-09 17:59:05,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733697977] [2024-11-09 17:59:05,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:59:05,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 17:59:05,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:59:05,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 17:59:05,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2024-11-09 17:59:05,931 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 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) [2024-11-09 17:59:06,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:59:06,038 INFO L93 Difference]: Finished difference Result 134 states and 161 transitions. [2024-11-09 17:59:06,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-09 17:59:06,039 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 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 53 [2024-11-09 17:59:06,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:59:06,040 INFO L225 Difference]: With dead ends: 134 [2024-11-09 17:59:06,040 INFO L226 Difference]: Without dead ends: 103 [2024-11-09 17:59:06,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2024-11-09 17:59:06,041 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 29 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 17:59:06,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 93 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 17:59:06,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-09 17:59:06,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-11-09 17:59:06,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.0294117647058822) internal successors, (105), 102 states have internal predecessors, (105), 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) [2024-11-09 17:59:06,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2024-11-09 17:59:06,052 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 53 [2024-11-09 17:59:06,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:59:06,052 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2024-11-09 17:59:06,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 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) [2024-11-09 17:59:06,053 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2024-11-09 17:59:06,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-09 17:59:06,055 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:59:06,055 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:59:06,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 17:59:06,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:59:06,257 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:59:06,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:59:06,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1727174544, now seen corresponding path program 4 times [2024-11-09 17:59:06,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:59:06,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374937721] [2024-11-09 17:59:06,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:59:06,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:59:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:59:07,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2024-11-09 17:59:07,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:59:07,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374937721] [2024-11-09 17:59:07,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374937721] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:59:07,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42650601] [2024-11-09 17:59:07,214 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 17:59:07,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:59:07,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:59:07,216 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:59:07,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 17:59:07,426 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 17:59:07,427 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 17:59:07,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 17:59:07,438 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 17:59:07,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2024-11-09 17:59:07,535 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 17:59:08,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2024-11-09 17:59:08,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42650601] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 17:59:08,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 17:59:08,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-09 17:59:08,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612339629] [2024-11-09 17:59:08,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 17:59:08,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-09 17:59:08,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 17:59:08,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-09 17:59:08,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-09 17:59:08,353 INFO L87 Difference]: Start difference. First operand 103 states and 105 transitions. Second operand has 49 states, 49 states have (on average 2.204081632653061) internal successors, (108), 49 states have internal predecessors, (108), 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) [2024-11-09 17:59:08,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 17:59:08,635 INFO L93 Difference]: Finished difference Result 254 states and 305 transitions. [2024-11-09 17:59:08,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-09 17:59:08,636 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.204081632653061) internal successors, (108), 49 states have internal predecessors, (108), 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 101 [2024-11-09 17:59:08,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 17:59:08,638 INFO L225 Difference]: With dead ends: 254 [2024-11-09 17:59:08,638 INFO L226 Difference]: Without dead ends: 199 [2024-11-09 17:59:08,639 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-09 17:59:08,640 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 205 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 17:59:08,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 161 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 17:59:08,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-09 17:59:08,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2024-11-09 17:59:08,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.0151515151515151) internal successors, (201), 198 states have internal predecessors, (201), 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) [2024-11-09 17:59:08,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 201 transitions. [2024-11-09 17:59:08,657 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 201 transitions. Word has length 101 [2024-11-09 17:59:08,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 17:59:08,657 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 201 transitions. [2024-11-09 17:59:08,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.204081632653061) internal successors, (108), 49 states have internal predecessors, (108), 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) [2024-11-09 17:59:08,657 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 201 transitions. [2024-11-09 17:59:08,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-09 17:59:08,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 17:59:08,663 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 17:59:08,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 17:59:08,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:59:08,864 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 17:59:08,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 17:59:08,865 INFO L85 PathProgramCache]: Analyzing trace with hash 900558960, now seen corresponding path program 5 times [2024-11-09 17:59:08,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 17:59:08,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111370783] [2024-11-09 17:59:08,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 17:59:08,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 17:59:08,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 17:59:11,619 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 2162 trivial. 0 not checked. [2024-11-09 17:59:11,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 17:59:11,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111370783] [2024-11-09 17:59:11,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111370783] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 17:59:11,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841446916] [2024-11-09 17:59:11,620 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 17:59:11,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 17:59:11,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 17:59:11,623 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 17:59:11,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process