./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d 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/data_structures_set_multi_proc_ground-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4c9c46abbea18888bba6501dfe6c704a11e8fe399c985999e1e07c66bb12b728 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 02:16:52,936 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 02:16:53,009 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 02:16:53,017 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 02:16:53,018 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 02:16:53,047 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 02:16:53,048 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 02:16:53,048 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 02:16:53,050 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 02:16:53,051 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 02:16:53,051 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 02:16:53,051 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 02:16:53,052 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 02:16:53,053 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 02:16:53,054 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 02:16:53,055 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 02:16:53,055 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 02:16:53,055 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 02:16:53,058 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 02:16:53,059 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 02:16:53,059 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 02:16:53,059 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 02:16:53,060 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 02:16:53,060 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 02:16:53,060 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 02:16:53,060 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 02:16:53,060 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 02:16:53,061 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 02:16:53,061 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 02:16:53,061 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 02:16:53,061 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 02:16:53,061 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 02:16:53,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:16:53,062 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 02:16:53,062 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 02:16:53,062 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 02:16:53,062 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 02:16:53,063 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 02:16:53,063 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 02:16:53,065 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 02:16:53,066 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 02:16:53,066 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 02:16:53,066 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c9c46abbea18888bba6501dfe6c704a11e8fe399c985999e1e07c66bb12b728 [2024-11-16 02:16:53,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 02:16:53,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 02:16:53,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 02:16:53,378 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 02:16:53,378 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 02:16:53,380 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-1.i [2024-11-16 02:16:54,774 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 02:16:54,988 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 02:16:54,988 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_ground-1.i [2024-11-16 02:16:54,996 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/403b1ebf4/de285a4dbb0b43d7a4e8d12a3ea0c33d/FLAGa533d9f33 [2024-11-16 02:16:55,381 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/403b1ebf4/de285a4dbb0b43d7a4e8d12a3ea0c33d [2024-11-16 02:16:55,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 02:16:55,387 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 02:16:55,389 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 02:16:55,389 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 02:16:55,399 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 02:16:55,400 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:16:55" (1/1) ... [2024-11-16 02:16:55,401 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a4c349a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:16:55, skipping insertion in model container [2024-11-16 02:16:55,401 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:16:55" (1/1) ... [2024-11-16 02:16:55,425 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 02:16:55,607 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/data_structures_set_multi_proc_ground-1.i[832,845] [2024-11-16 02:16:55,631 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:16:55,638 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 02:16:55,648 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/data_structures_set_multi_proc_ground-1.i[832,845] [2024-11-16 02:16:55,661 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:16:55,678 INFO L204 MainTranslator]: Completed translation [2024-11-16 02:16:55,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:16:55 WrapperNode [2024-11-16 02:16:55,679 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 02:16:55,680 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 02:16:55,680 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 02:16:55,680 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 02:16:55,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:16:55" (1/1) ... [2024-11-16 02:16:55,695 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:16:55" (1/1) ... [2024-11-16 02:16:55,714 INFO L138 Inliner]: procedures = 18, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 130 [2024-11-16 02:16:55,717 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 02:16:55,717 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 02:16:55,718 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 02:16:55,718 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 02:16:55,729 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:16:55" (1/1) ... [2024-11-16 02:16:55,729 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:16:55" (1/1) ... [2024-11-16 02:16:55,735 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:16:55" (1/1) ... [2024-11-16 02:16:55,757 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 7, 3]. 58 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 2, 1]. [2024-11-16 02:16:55,758 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:16:55" (1/1) ... [2024-11-16 02:16:55,758 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:16:55" (1/1) ... [2024-11-16 02:16:55,764 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:16:55" (1/1) ... [2024-11-16 02:16:55,765 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:16:55" (1/1) ... [2024-11-16 02:16:55,766 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:16:55" (1/1) ... [2024-11-16 02:16:55,767 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:16:55" (1/1) ... [2024-11-16 02:16:55,769 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 02:16:55,772 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 02:16:55,773 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 02:16:55,773 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 02:16:55,774 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:16:55" (1/1) ... [2024-11-16 02:16:55,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:16:55,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:16:55,810 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) [2024-11-16 02:16:55,812 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 [2024-11-16 02:16:55,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 02:16:55,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 02:16:55,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 02:16:55,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 02:16:55,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 02:16:55,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 02:16:55,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 02:16:55,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 02:16:55,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 02:16:55,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 02:16:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 02:16:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 02:16:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 02:16:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-16 02:16:55,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-16 02:16:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 02:16:55,973 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 02:16:55,975 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 02:16:56,197 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L29: call ULTIMATE.dealloc(main_~#set~0#1.base, main_~#set~0#1.offset);havoc main_~#set~0#1.base, main_~#set~0#1.offset;call ULTIMATE.dealloc(main_~#values~0#1.base, main_~#values~0#1.offset);havoc main_~#values~0#1.base, main_~#values~0#1.offset; [2024-11-16 02:16:56,220 INFO L? ?]: Removed 32 outVars from TransFormulas that were not future-live. [2024-11-16 02:16:56,221 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 02:16:56,239 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 02:16:56,239 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 02:16:56,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:16:56 BoogieIcfgContainer [2024-11-16 02:16:56,240 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 02:16:56,243 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 02:16:56,243 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 02:16:56,247 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 02:16:56,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 02:16:55" (1/3) ... [2024-11-16 02:16:56,248 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df805ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:16:56, skipping insertion in model container [2024-11-16 02:16:56,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:16:55" (2/3) ... [2024-11-16 02:16:56,250 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3df805ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:16:56, skipping insertion in model container [2024-11-16 02:16:56,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:16:56" (3/3) ... [2024-11-16 02:16:56,251 INFO L112 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_ground-1.i [2024-11-16 02:16:56,267 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 02:16:56,268 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 02:16:56,347 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 02:16:56,357 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;@5b0ed10b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 02:16:56,357 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 02:16:56,363 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 41 states have (on average 1.4878048780487805) internal successors, (61), 42 states have internal predecessors, (61), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:16:56,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-16 02:16:56,371 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:16:56,371 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:16:56,372 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:16:56,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:16:56,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1222719229, now seen corresponding path program 1 times [2024-11-16 02:16:56,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:16:56,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735624540] [2024-11-16 02:16:56,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:16:56,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:16:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:16:56,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:16:56,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:16:56,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735624540] [2024-11-16 02:16:56,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735624540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:16:56,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:16:56,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 02:16:56,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682360794] [2024-11-16 02:16:56,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:16:56,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 02:16:56,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:16:56,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 02:16:56,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:16:56,593 INFO L87 Difference]: Start difference. First operand has 46 states, 41 states have (on average 1.4878048780487805) internal successors, (61), 42 states have internal predecessors, (61), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2024-11-16 02:16:56,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:16:56,620 INFO L93 Difference]: Finished difference Result 87 states and 125 transitions. [2024-11-16 02:16:56,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 02:16:56,622 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 13 [2024-11-16 02:16:56,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:16:56,630 INFO L225 Difference]: With dead ends: 87 [2024-11-16 02:16:56,630 INFO L226 Difference]: Without dead ends: 41 [2024-11-16 02:16:56,633 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 [2024-11-16 02:16:56,637 INFO L432 NwaCegarLoop]: 55 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, 55 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 [2024-11-16 02:16:56,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:16:56,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-16 02:16:56,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-11-16 02:16:56,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 37 states have internal predecessors, (47), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:16:56,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2024-11-16 02:16:56,675 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 13 [2024-11-16 02:16:56,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:16:56,676 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2024-11-16 02:16:56,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2024-11-16 02:16:56,677 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2024-11-16 02:16:56,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-16 02:16:56,678 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:16:56,678 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:16:56,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 02:16:56,678 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:16:56,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:16:56,679 INFO L85 PathProgramCache]: Analyzing trace with hash 2101188240, now seen corresponding path program 1 times [2024-11-16 02:16:56,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:16:56,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624858950] [2024-11-16 02:16:56,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:16:56,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:16:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:16:56,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:16:56,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:16:56,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624858950] [2024-11-16 02:16:56,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624858950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:16:56,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:16:56,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 02:16:56,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338463847] [2024-11-16 02:16:56,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:16:56,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:16:56,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:16:56,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:16:56,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:16:56,786 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2024-11-16 02:16:56,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:16:56,845 INFO L93 Difference]: Finished difference Result 94 states and 119 transitions. [2024-11-16 02:16:56,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:16:56,847 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), 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 14 [2024-11-16 02:16:56,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:16:56,848 INFO L225 Difference]: With dead ends: 94 [2024-11-16 02:16:56,848 INFO L226 Difference]: Without dead ends: 57 [2024-11-16 02:16:56,849 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 [2024-11-16 02:16:56,850 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 12 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:16:56,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 84 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:16:56,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-16 02:16:56,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 43. [2024-11-16 02:16:56,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 39 states have internal predecessors, (49), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:16:56,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2024-11-16 02:16:56,865 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 14 [2024-11-16 02:16:56,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:16:56,866 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2024-11-16 02:16:56,866 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), 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) [2024-11-16 02:16:56,866 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2024-11-16 02:16:56,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-16 02:16:56,867 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:16:56,867 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:16:56,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 02:16:56,869 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:16:56,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:16:56,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1300207919, now seen corresponding path program 1 times [2024-11-16 02:16:56,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:16:56,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683134537] [2024-11-16 02:16:56,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:16:56,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:16:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:16:57,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:16:57,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:16:57,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683134537] [2024-11-16 02:16:57,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683134537] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:16:57,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703916852] [2024-11-16 02:16:57,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:16:57,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:16:57,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:16:57,010 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) [2024-11-16 02:16:57,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 02:16:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:16:57,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 02:16:57,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:16:57,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:16:57,139 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:16:57,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 02:16:57,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703916852] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:16:57,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:16:57,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-16 02:16:57,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825694584] [2024-11-16 02:16:57,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:16:57,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 02:16:57,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:16:57,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 02:16:57,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 02:16:57,173 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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) [2024-11-16 02:16:57,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:16:57,306 INFO L93 Difference]: Finished difference Result 142 states and 184 transitions. [2024-11-16 02:16:57,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 02:16:57,308 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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 16 [2024-11-16 02:16:57,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:16:57,310 INFO L225 Difference]: With dead ends: 142 [2024-11-16 02:16:57,310 INFO L226 Difference]: Without dead ends: 105 [2024-11-16 02:16:57,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 02:16:57,312 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 93 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:16:57,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 143 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:16:57,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-16 02:16:57,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 49. [2024-11-16 02:16:57,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 45 states have internal predecessors, (55), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-16 02:16:57,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2024-11-16 02:16:57,323 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 16 [2024-11-16 02:16:57,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:16:57,324 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2024-11-16 02:16:57,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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) [2024-11-16 02:16:57,324 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2024-11-16 02:16:57,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-16 02:16:57,325 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:16:57,325 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:16:57,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-16 02:16:57,530 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 [2024-11-16 02:16:57,530 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:16:57,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:16:57,531 INFO L85 PathProgramCache]: Analyzing trace with hash -676046196, now seen corresponding path program 2 times [2024-11-16 02:16:57,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:16:57,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744694105] [2024-11-16 02:16:57,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:16:57,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:16:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:16:57,653 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 02:16:57,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:16:57,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744694105] [2024-11-16 02:16:57,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744694105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:16:57,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:16:57,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:16:57,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280435251] [2024-11-16 02:16:57,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:16:57,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:16:57,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:16:57,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:16:57,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:16:57,660 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2024-11-16 02:16:57,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:16:57,711 INFO L93 Difference]: Finished difference Result 92 states and 113 transitions. [2024-11-16 02:16:57,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:16:57,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 22 [2024-11-16 02:16:57,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:16:57,713 INFO L225 Difference]: With dead ends: 92 [2024-11-16 02:16:57,713 INFO L226 Difference]: Without dead ends: 53 [2024-11-16 02:16:57,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:16:57,714 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 20 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:16:57,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 93 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:16:57,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-16 02:16:57,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-16 02:16:57,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 50 states have (on average 1.22) internal successors, (61), 50 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 02:16:57,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2024-11-16 02:16:57,721 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 22 [2024-11-16 02:16:57,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:16:57,722 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2024-11-16 02:16:57,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2024-11-16 02:16:57,722 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2024-11-16 02:16:57,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-16 02:16:57,723 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:16:57,723 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 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] [2024-11-16 02:16:57,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 02:16:57,723 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:16:57,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:16:57,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1396840471, now seen corresponding path program 1 times [2024-11-16 02:16:57,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:16:57,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242749502] [2024-11-16 02:16:57,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:16:57,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:16:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:16:57,834 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-16 02:16:57,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:16:57,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242749502] [2024-11-16 02:16:57,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242749502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:16:57,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:16:57,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 02:16:57,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104223303] [2024-11-16 02:16:57,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:16:57,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:16:57,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:16:57,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:16:57,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 02:16:57,837 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2024-11-16 02:16:57,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:16:57,862 INFO L93 Difference]: Finished difference Result 101 states and 123 transitions. [2024-11-16 02:16:57,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:16:57,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 40 [2024-11-16 02:16:57,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:16:57,879 INFO L225 Difference]: With dead ends: 101 [2024-11-16 02:16:57,880 INFO L226 Difference]: Without dead ends: 66 [2024-11-16 02:16:57,880 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 [2024-11-16 02:16:57,881 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 12 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:16:57,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 73 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:16:57,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-16 02:16:57,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 55. [2024-11-16 02:16:57,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 52 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 02:16:57,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2024-11-16 02:16:57,898 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 40 [2024-11-16 02:16:57,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:16:57,899 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2024-11-16 02:16:57,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2024-11-16 02:16:57,899 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2024-11-16 02:16:57,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-16 02:16:57,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:16:57,900 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 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] [2024-11-16 02:16:57,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 02:16:57,902 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:16:57,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:16:57,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1659917910, now seen corresponding path program 1 times [2024-11-16 02:16:57,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:16:57,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836976010] [2024-11-16 02:16:57,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:16:57,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:16:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:16:58,034 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-16 02:16:58,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:16:58,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836976010] [2024-11-16 02:16:58,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836976010] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:16:58,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761760179] [2024-11-16 02:16:58,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:16:58,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:16:58,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:16:58,039 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) [2024-11-16 02:16:58,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 02:16:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:16:58,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 02:16:58,155 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:16:58,221 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 02:16:58,221 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:16:58,314 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 02:16:58,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761760179] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:16:58,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:16:58,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-16 02:16:58,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439881200] [2024-11-16 02:16:58,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:16:58,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 02:16:58,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:16:58,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 02:16:58,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-16 02:16:58,317 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 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) [2024-11-16 02:16:58,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:16:58,483 INFO L93 Difference]: Finished difference Result 212 states and 268 transitions. [2024-11-16 02:16:58,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 02:16:58,484 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 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 42 [2024-11-16 02:16:58,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:16:58,485 INFO L225 Difference]: With dead ends: 212 [2024-11-16 02:16:58,489 INFO L226 Difference]: Without dead ends: 169 [2024-11-16 02:16:58,490 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-16 02:16:58,490 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 179 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:16:58,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 196 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:16:58,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-16 02:16:58,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 81. [2024-11-16 02:16:58,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 78 states have (on average 1.1794871794871795) internal successors, (92), 78 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 02:16:58,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2024-11-16 02:16:58,504 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 42 [2024-11-16 02:16:58,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:16:58,505 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2024-11-16 02:16:58,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 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) [2024-11-16 02:16:58,506 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2024-11-16 02:16:58,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-16 02:16:58,508 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:16:58,508 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:16:58,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 02:16:58,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-16 02:16:58,710 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:16:58,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:16:58,711 INFO L85 PathProgramCache]: Analyzing trace with hash 819913957, now seen corresponding path program 1 times [2024-11-16 02:16:58,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:16:58,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495879277] [2024-11-16 02:16:58,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:16:58,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:16:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:16:58,855 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-16 02:16:58,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:16:58,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495879277] [2024-11-16 02:16:58,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495879277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:16:58,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:16:58,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 02:16:58,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60186042] [2024-11-16 02:16:58,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:16:58,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 02:16:58,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:16:58,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 02:16:58,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:16:58,857 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2024-11-16 02:16:58,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:16:58,876 INFO L93 Difference]: Finished difference Result 106 states and 124 transitions. [2024-11-16 02:16:58,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 02:16:58,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 64 [2024-11-16 02:16:58,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:16:58,879 INFO L225 Difference]: With dead ends: 106 [2024-11-16 02:16:58,879 INFO L226 Difference]: Without dead ends: 72 [2024-11-16 02:16:58,880 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 02:16:58,881 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:16:58,882 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:16:58,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-16 02:16:58,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-16 02:16:58,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 69 states have (on average 1.1304347826086956) internal successors, (78), 69 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 02:16:58,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2024-11-16 02:16:58,894 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 64 [2024-11-16 02:16:58,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:16:58,894 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2024-11-16 02:16:58,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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) [2024-11-16 02:16:58,895 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2024-11-16 02:16:58,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-16 02:16:58,898 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:16:58,898 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:16:58,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 02:16:58,899 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:16:58,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:16:58,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1969072885, now seen corresponding path program 2 times [2024-11-16 02:16:58,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:16:58,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690690199] [2024-11-16 02:16:58,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:16:58,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:16:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:16:59,284 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-16 02:16:59,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:16:59,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690690199] [2024-11-16 02:16:59,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690690199] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:16:59,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441796109] [2024-11-16 02:16:59,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:16:59,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:16:59,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:16:59,289 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) [2024-11-16 02:16:59,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 02:16:59,427 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:16:59,427 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:16:59,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-16 02:16:59,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:16:59,493 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-16 02:16:59,494 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:16:59,741 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-16 02:16:59,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441796109] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:16:59,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:16:59,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-16 02:16:59,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576674355] [2024-11-16 02:16:59,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:16:59,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-16 02:16:59,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:16:59,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-16 02:16:59,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-16 02:16:59,748 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand has 25 states, 25 states have (on average 3.08) internal successors, (77), 25 states have internal predecessors, (77), 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) [2024-11-16 02:16:59,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:16:59,974 INFO L93 Difference]: Finished difference Result 298 states and 369 transitions. [2024-11-16 02:16:59,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-16 02:16:59,974 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.08) internal successors, (77), 25 states have internal predecessors, (77), 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 65 [2024-11-16 02:16:59,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:16:59,976 INFO L225 Difference]: With dead ends: 298 [2024-11-16 02:16:59,977 INFO L226 Difference]: Without dead ends: 250 [2024-11-16 02:16:59,978 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-16 02:16:59,979 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 377 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 02:16:59,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 237 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 02:16:59,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-11-16 02:17:00,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 96. [2024-11-16 02:17:00,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 93 states have (on average 1.096774193548387) internal successors, (102), 93 states have internal predecessors, (102), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 02:17:00,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2024-11-16 02:17:00,003 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 65 [2024-11-16 02:17:00,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:17:00,003 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2024-11-16 02:17:00,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.08) internal successors, (77), 25 states have internal predecessors, (77), 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) [2024-11-16 02:17:00,004 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2024-11-16 02:17:00,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-16 02:17:00,007 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:17:00,008 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:17:00,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 02:17:00,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:17:00,209 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:17:00,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:17:00,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1477115753, now seen corresponding path program 3 times [2024-11-16 02:17:00,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:17:00,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226246667] [2024-11-16 02:17:00,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:17:00,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:17:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:17:00,943 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-16 02:17:00,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:17:00,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226246667] [2024-11-16 02:17:00,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226246667] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:17:00,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466967171] [2024-11-16 02:17:00,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:17:00,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:17:00,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:17:00,947 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) [2024-11-16 02:17:00,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 02:17:01,058 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-16 02:17:01,059 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:17:01,060 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-16 02:17:01,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:17:01,228 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2024-11-16 02:17:01,230 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 02:17:01,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466967171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:17:01,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 02:17:01,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [25] total 31 [2024-11-16 02:17:01,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314287856] [2024-11-16 02:17:01,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:17:01,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 02:17:01,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:17:01,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 02:17:01,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=615, Unknown=0, NotChecked=0, Total=930 [2024-11-16 02:17:01,232 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 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) [2024-11-16 02:17:01,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:17:01,375 INFO L93 Difference]: Finished difference Result 141 states and 160 transitions. [2024-11-16 02:17:01,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 02:17:01,375 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 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 89 [2024-11-16 02:17:01,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:17:01,377 INFO L225 Difference]: With dead ends: 141 [2024-11-16 02:17:01,377 INFO L226 Difference]: Without dead ends: 121 [2024-11-16 02:17:01,377 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=335, Invalid=855, Unknown=0, NotChecked=0, Total=1190 [2024-11-16 02:17:01,378 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 69 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:17:01,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 153 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:17:01,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-16 02:17:01,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 98. [2024-11-16 02:17:01,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 95 states have (on average 1.105263157894737) internal successors, (105), 95 states have internal predecessors, (105), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 02:17:01,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 107 transitions. [2024-11-16 02:17:01,392 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 107 transitions. Word has length 89 [2024-11-16 02:17:01,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:17:01,392 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 107 transitions. [2024-11-16 02:17:01,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 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) [2024-11-16 02:17:01,392 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 107 transitions. [2024-11-16 02:17:01,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-16 02:17:01,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:17:01,396 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:17:01,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 02:17:01,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:17:01,597 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:17:01,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:17:01,598 INFO L85 PathProgramCache]: Analyzing trace with hash 588668632, now seen corresponding path program 1 times [2024-11-16 02:17:01,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:17:01,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64093853] [2024-11-16 02:17:01,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:17:01,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:17:01,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:17:02,247 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 02:17:02,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:17:02,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64093853] [2024-11-16 02:17:02,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64093853] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:17:02,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35151761] [2024-11-16 02:17:02,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:17:02,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:17:02,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:17:02,250 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) [2024-11-16 02:17:02,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 02:17:02,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:17:02,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-16 02:17:02,431 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:17:02,521 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 02:17:02,521 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:17:03,351 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 02:17:03,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35151761] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:17:03,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:17:03,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-16 02:17:03,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907862976] [2024-11-16 02:17:03,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:17:03,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-16 02:17:03,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:17:03,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-16 02:17:03,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-16 02:17:03,356 INFO L87 Difference]: Start difference. First operand 98 states and 107 transitions. Second operand has 49 states, 49 states have (on average 2.5918367346938775) internal successors, (127), 49 states have internal predecessors, (127), 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) [2024-11-16 02:17:03,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:17:03,943 INFO L93 Difference]: Finished difference Result 518 states and 651 transitions. [2024-11-16 02:17:03,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-16 02:17:03,944 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.5918367346938775) internal successors, (127), 49 states have internal predecessors, (127), 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 89 [2024-11-16 02:17:03,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:17:03,947 INFO L225 Difference]: With dead ends: 518 [2024-11-16 02:17:03,947 INFO L226 Difference]: Without dead ends: 468 [2024-11-16 02:17:03,948 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-16 02:17:03,949 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 713 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 02:17:03,949 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 471 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 02:17:03,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2024-11-16 02:17:03,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 146. [2024-11-16 02:17:03,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 143 states have (on average 1.06993006993007) internal successors, (153), 143 states have internal predecessors, (153), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 02:17:03,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 155 transitions. [2024-11-16 02:17:03,978 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 155 transitions. Word has length 89 [2024-11-16 02:17:03,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:17:03,978 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 155 transitions. [2024-11-16 02:17:03,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.5918367346938775) internal successors, (127), 49 states have internal predecessors, (127), 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) [2024-11-16 02:17:03,978 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 155 transitions. [2024-11-16 02:17:03,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-16 02:17:03,981 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:17:03,981 INFO L215 NwaCegarLoop]: trace histogram [47, 46, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:17:04,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 02:17:04,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-16 02:17:04,186 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:17:04,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:17:04,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1833760272, now seen corresponding path program 2 times [2024-11-16 02:17:04,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:17:04,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179063781] [2024-11-16 02:17:04,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:17:04,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:17:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:17:06,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2180 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 02:17:06,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:17:06,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179063781] [2024-11-16 02:17:06,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179063781] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:17:06,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534811008] [2024-11-16 02:17:06,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:17:06,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:17:06,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:17:06,256 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:17:06,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 02:17:06,469 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:17:06,470 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:17:06,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-16 02:17:06,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:17:06,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2180 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 02:17:06,648 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:17:09,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2180 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 02:17:09,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534811008] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:17:09,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:17:09,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2024-11-16 02:17:09,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441122341] [2024-11-16 02:17:09,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:17:09,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-16 02:17:09,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:17:09,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-16 02:17:09,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-16 02:17:09,378 INFO L87 Difference]: Start difference. First operand 146 states and 155 transitions. Second operand has 97 states, 97 states have (on average 2.2989690721649483) internal successors, (223), 97 states have internal predecessors, (223), 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) [2024-11-16 02:17:11,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:17:11,841 INFO L93 Difference]: Finished difference Result 950 states and 1203 transitions. [2024-11-16 02:17:11,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-16 02:17:11,842 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.2989690721649483) internal successors, (223), 97 states have internal predecessors, (223), 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 137 [2024-11-16 02:17:11,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:17:11,858 INFO L225 Difference]: With dead ends: 950 [2024-11-16 02:17:11,858 INFO L226 Difference]: Without dead ends: 900 [2024-11-16 02:17:11,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-16 02:17:11,861 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 1793 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1887 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 02:17:11,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1887 Valid, 705 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 02:17:11,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2024-11-16 02:17:11,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 242. [2024-11-16 02:17:11,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 239 states have (on average 1.0418410041841004) internal successors, (249), 239 states have internal predecessors, (249), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 02:17:11,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 251 transitions. [2024-11-16 02:17:11,892 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 251 transitions. Word has length 137 [2024-11-16 02:17:11,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:17:11,892 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 251 transitions. [2024-11-16 02:17:11,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.2989690721649483) internal successors, (223), 97 states have internal predecessors, (223), 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) [2024-11-16 02:17:11,893 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 251 transitions. [2024-11-16 02:17:11,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2024-11-16 02:17:11,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:17:11,895 INFO L215 NwaCegarLoop]: trace histogram [95, 94, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:17:11,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 02:17:12,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:17:12,096 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:17:12,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:17:12,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1315327968, now seen corresponding path program 3 times [2024-11-16 02:17:12,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:17:12,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75856124] [2024-11-16 02:17:12,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:17:12,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:17:12,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:17:17,825 INFO L134 CoverageAnalysis]: Checked inductivity of 8948 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 02:17:17,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:17:17,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75856124] [2024-11-16 02:17:17,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75856124] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:17:17,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258003401] [2024-11-16 02:17:17,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:17:17,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:17:17,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:17:17,828 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:17:17,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 02:17:18,062 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-16 02:17:18,062 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:17:18,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 02:17:18,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:17:18,203 INFO L134 CoverageAnalysis]: Checked inductivity of 8948 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8942 trivial. 0 not checked. [2024-11-16 02:17:18,203 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:17:18,331 INFO L134 CoverageAnalysis]: Checked inductivity of 8948 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 8942 trivial. 0 not checked. [2024-11-16 02:17:18,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258003401] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:17:18,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:17:18,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 5, 5] total 103 [2024-11-16 02:17:18,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060880046] [2024-11-16 02:17:18,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:17:18,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2024-11-16 02:17:18,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:17:18,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2024-11-16 02:17:18,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4683, Invalid=5823, Unknown=0, NotChecked=0, Total=10506 [2024-11-16 02:17:18,340 INFO L87 Difference]: Start difference. First operand 242 states and 251 transitions. Second operand has 103 states, 103 states have (on average 2.349514563106796) internal successors, (242), 103 states have internal predecessors, (242), 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) [2024-11-16 02:17:20,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:17:20,634 INFO L93 Difference]: Finished difference Result 1050 states and 1278 transitions. [2024-11-16 02:17:20,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2024-11-16 02:17:20,634 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.349514563106796) internal successors, (242), 103 states have internal predecessors, (242), 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 233 [2024-11-16 02:17:20,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:17:20,639 INFO L225 Difference]: With dead ends: 1050 [2024-11-16 02:17:20,640 INFO L226 Difference]: Without dead ends: 1000 [2024-11-16 02:17:20,642 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 460 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=4683, Invalid=5823, Unknown=0, NotChecked=0, Total=10506 [2024-11-16 02:17:20,643 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 2067 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2162 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 02:17:20,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2162 Valid, 743 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 02:17:20,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2024-11-16 02:17:20,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 292. [2024-11-16 02:17:20,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 289 states have (on average 1.0622837370242215) internal successors, (307), 289 states have internal predecessors, (307), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 02:17:20,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 309 transitions. [2024-11-16 02:17:20,701 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 309 transitions. Word has length 233 [2024-11-16 02:17:20,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:17:20,701 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 309 transitions. [2024-11-16 02:17:20,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.349514563106796) internal successors, (242), 103 states have internal predecessors, (242), 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) [2024-11-16 02:17:20,702 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 309 transitions. [2024-11-16 02:17:20,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-11-16 02:17:20,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:17:20,706 INFO L215 NwaCegarLoop]: trace histogram [96, 95, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:17:20,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-16 02:17:20,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:17:20,907 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:17:20,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:17:20,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1183955291, now seen corresponding path program 4 times [2024-11-16 02:17:20,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:17:20,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490021383] [2024-11-16 02:17:20,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:17:20,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:17:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:17:26,725 INFO L134 CoverageAnalysis]: Checked inductivity of 9304 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-16 02:17:26,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:17:26,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490021383] [2024-11-16 02:17:26,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490021383] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:17:26,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972320488] [2024-11-16 02:17:26,725 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:17:26,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:17:26,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:17:26,727 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:17:26,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 02:17:27,100 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:17:27,100 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:17:27,105 INFO L255 TraceCheckSpWp]: Trace formula consists of 1467 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 02:17:27,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:17:27,418 INFO L134 CoverageAnalysis]: Checked inductivity of 9304 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 9162 trivial. 0 not checked. [2024-11-16 02:17:27,419 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:17:27,763 INFO L134 CoverageAnalysis]: Checked inductivity of 9304 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 9162 trivial. 0 not checked. [2024-11-16 02:17:27,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972320488] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:17:27,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:17:27,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 9, 9] total 112 [2024-11-16 02:17:27,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952191472] [2024-11-16 02:17:27,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:17:27,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2024-11-16 02:17:27,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:17:27,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2024-11-16 02:17:27,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4872, Invalid=7560, Unknown=0, NotChecked=0, Total=12432 [2024-11-16 02:17:27,770 INFO L87 Difference]: Start difference. First operand 292 states and 309 transitions. Second operand has 112 states, 112 states have (on average 3.107142857142857) internal successors, (348), 112 states have internal predecessors, (348), 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) [2024-11-16 02:17:30,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:17:30,261 INFO L93 Difference]: Finished difference Result 1239 states and 1505 transitions. [2024-11-16 02:17:30,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2024-11-16 02:17:30,262 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 3.107142857142857) internal successors, (348), 112 states have internal predecessors, (348), 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 279 [2024-11-16 02:17:30,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:17:30,266 INFO L225 Difference]: With dead ends: 1239 [2024-11-16 02:17:30,266 INFO L226 Difference]: Without dead ends: 1141 [2024-11-16 02:17:30,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 544 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1330 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=4872, Invalid=7560, Unknown=0, NotChecked=0, Total=12432 [2024-11-16 02:17:30,268 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 2565 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2661 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 574 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 02:17:30,268 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2661 Valid, 928 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [574 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 02:17:30,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2024-11-16 02:17:30,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 390. [2024-11-16 02:17:30,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 387 states have (on average 1.0878552971576227) internal successors, (421), 387 states have internal predecessors, (421), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-16 02:17:30,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 423 transitions. [2024-11-16 02:17:30,296 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 423 transitions. Word has length 279 [2024-11-16 02:17:30,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:17:30,296 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 423 transitions. [2024-11-16 02:17:30,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 112 states have (on average 3.107142857142857) internal successors, (348), 112 states have internal predecessors, (348), 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) [2024-11-16 02:17:30,297 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 423 transitions. [2024-11-16 02:17:30,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2024-11-16 02:17:30,301 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:17:30,301 INFO L215 NwaCegarLoop]: trace histogram [97, 96, 15, 15, 14, 14, 14, 14, 14, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 02:17:30,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-16 02:17:30,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-16 02:17:30,502 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:17:30,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:17:30,503 INFO L85 PathProgramCache]: Analyzing trace with hash -581391122, now seen corresponding path program 5 times [2024-11-16 02:17:30,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:17:30,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334375704] [2024-11-16 02:17:30,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:17:30,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:17:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:17:36,575 INFO L134 CoverageAnalysis]: Checked inductivity of 10356 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2024-11-16 02:17:36,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:17:36,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334375704] [2024-11-16 02:17:36,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334375704] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:17:36,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523636463] [2024-11-16 02:17:36,576 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:17:36,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:17:36,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:17:36,577 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 02:17:36,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process