./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/heap-data/process_queue.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d 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/heap-data/process_queue.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 1ad9f94c1d10f7bc5f4235ca7c5dc51413b43a0e6c48b9e48da5d2e3e751252c --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 13:50:43,775 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 13:50:43,855 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 13:50:43,859 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 13:50:43,859 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 13:50:43,887 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 13:50:43,888 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 13:50:43,888 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 13:50:43,889 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 13:50:43,889 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 13:50:43,889 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 13:50:43,890 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 13:50:43,890 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 13:50:43,891 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 13:50:43,891 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 13:50:43,891 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 13:50:43,892 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 13:50:43,892 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 13:50:43,895 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 13:50:43,897 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 13:50:43,897 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 13:50:43,901 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 13:50:43,902 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 13:50:43,902 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 13:50:43,902 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 13:50:43,902 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 13:50:43,903 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 13:50:43,903 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 13:50:43,903 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 13:50:43,903 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 13:50:43,904 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 13:50:43,904 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 13:50:43,904 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 13:50:43,904 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 13:50:43,905 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 13:50:43,905 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 13:50:43,907 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 13:50:43,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 13:50:43,908 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 13:50:43,908 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 13:50:43,909 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 13:50:43,909 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 13:50:43,909 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ad9f94c1d10f7bc5f4235ca7c5dc51413b43a0e6c48b9e48da5d2e3e751252c [2024-11-08 13:50:44,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 13:50:44,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 13:50:44,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 13:50:44,210 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 13:50:44,211 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 13:50:44,212 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-data/process_queue.i [2024-11-08 13:50:45,787 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 13:50:46,016 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 13:50:46,018 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-data/process_queue.i [2024-11-08 13:50:46,035 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/087db9b17/ff1c165a16f9488fa87414e8c6731850/FLAG9dabbcd44 [2024-11-08 13:50:46,049 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/087db9b17/ff1c165a16f9488fa87414e8c6731850 [2024-11-08 13:50:46,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 13:50:46,052 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 13:50:46,053 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 13:50:46,053 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 13:50:46,059 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 13:50:46,059 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 01:50:46" (1/1) ... [2024-11-08 13:50:46,060 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b0fcff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 01:50:46, skipping insertion in model container [2024-11-08 13:50:46,060 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 01:50:46" (1/1) ... [2024-11-08 13:50:46,109 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 13:50:46,473 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/heap-data/process_queue.i[23979,23992] [2024-11-08 13:50:46,490 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 13:50:46,500 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 13:50:46,541 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/heap-data/process_queue.i[23979,23992] [2024-11-08 13:50:46,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 13:50:46,579 INFO L204 MainTranslator]: Completed translation [2024-11-08 13:50:46,580 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 01:50:46 WrapperNode [2024-11-08 13:50:46,580 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 13:50:46,581 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 13:50:46,582 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 13:50:46,582 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 13:50:46,590 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 01:50:46" (1/1) ... [2024-11-08 13:50:46,607 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 01:50:46" (1/1) ... [2024-11-08 13:50:46,633 INFO L138 Inliner]: procedures = 127, calls = 32, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 115 [2024-11-08 13:50:46,634 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 13:50:46,634 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 13:50:46,635 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 13:50:46,635 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 13:50:46,646 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 01:50:46" (1/1) ... [2024-11-08 13:50:46,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 01:50:46" (1/1) ... [2024-11-08 13:50:46,650 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 01:50:46" (1/1) ... [2024-11-08 13:50:46,671 INFO L175 MemorySlicer]: Split 21 memory accesses to 3 slices as follows [2, 6, 13]. 62 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 7 writes are split as follows [0, 2, 5]. [2024-11-08 13:50:46,672 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 01:50:46" (1/1) ... [2024-11-08 13:50:46,672 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 01:50:46" (1/1) ... [2024-11-08 13:50:46,680 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 01:50:46" (1/1) ... [2024-11-08 13:50:46,684 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 01:50:46" (1/1) ... [2024-11-08 13:50:46,686 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 01:50:46" (1/1) ... [2024-11-08 13:50:46,691 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 01:50:46" (1/1) ... [2024-11-08 13:50:46,698 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 13:50:46,699 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 13:50:46,699 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 13:50:46,699 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 13:50:46,700 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 01:50:46" (1/1) ... [2024-11-08 13:50:46,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 13:50:46,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 13:50:46,732 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) [2024-11-08 13:50:46,734 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 [2024-11-08 13:50:46,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 13:50:46,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 13:50:46,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 13:50:46,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 13:50:46,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 13:50:46,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 13:50:46,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 13:50:46,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 13:50:46,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 13:50:46,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-08 13:50:46,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-08 13:50:46,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-08 13:50:46,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-08 13:50:46,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-08 13:50:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-08 13:50:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 13:50:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-08 13:50:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-08 13:50:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-08 13:50:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 13:50:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 13:50:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 13:50:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 13:50:46,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 13:50:46,915 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 13:50:46,917 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 13:50:47,134 INFO L? ?]: Removed 43 outVars from TransFormulas that were not future-live. [2024-11-08 13:50:47,135 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 13:50:47,146 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 13:50:47,147 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-08 13:50:47,147 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 01:50:47 BoogieIcfgContainer [2024-11-08 13:50:47,147 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 13:50:47,149 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 13:50:47,149 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 13:50:47,153 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 13:50:47,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 01:50:46" (1/3) ... [2024-11-08 13:50:47,156 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6373df17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 01:50:47, skipping insertion in model container [2024-11-08 13:50:47,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 01:50:46" (2/3) ... [2024-11-08 13:50:47,156 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6373df17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 01:50:47, skipping insertion in model container [2024-11-08 13:50:47,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 01:50:47" (3/3) ... [2024-11-08 13:50:47,158 INFO L112 eAbstractionObserver]: Analyzing ICFG process_queue.i [2024-11-08 13:50:47,175 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 13:50:47,175 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 13:50:47,221 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 13:50:47,228 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;@fee5218, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 13:50:47,228 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 13:50:47,234 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.52) internal successors, (38), 26 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:50:47,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 13:50:47,240 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 13:50:47,241 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 13:50:47,242 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 13:50:47,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 13:50:47,247 INFO L85 PathProgramCache]: Analyzing trace with hash -2060272908, now seen corresponding path program 1 times [2024-11-08 13:50:47,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 13:50:47,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829681906] [2024-11-08 13:50:47,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:50:47,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 13:50:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:50:47,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 13:50:47,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 13:50:47,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829681906] [2024-11-08 13:50:47,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829681906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 13:50:47,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 13:50:47,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 13:50:47,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931159170] [2024-11-08 13:50:47,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 13:50:47,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 13:50:47,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 13:50:47,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 13:50:47,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 13:50:47,762 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.52) internal successors, (38), 26 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:50:47,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 13:50:47,796 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2024-11-08 13:50:47,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 13:50:47,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-08 13:50:47,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 13:50:47,807 INFO L225 Difference]: With dead ends: 53 [2024-11-08 13:50:47,807 INFO L226 Difference]: Without dead ends: 24 [2024-11-08 13:50:47,810 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 [2024-11-08 13:50:47,815 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 13:50:47,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 13:50:47,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-08 13:50:47,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-08 13:50:47,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:50:47,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2024-11-08 13:50:47,848 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 11 [2024-11-08 13:50:47,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 13:50:47,849 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2024-11-08 13:50:47,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:50:47,849 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2024-11-08 13:50:47,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 13:50:47,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 13:50:47,851 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 13:50:47,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 13:50:47,852 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 13:50:47,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 13:50:47,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1911586027, now seen corresponding path program 1 times [2024-11-08 13:50:47,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 13:50:47,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278930410] [2024-11-08 13:50:47,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:50:47,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 13:50:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:50:47,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 13:50:47,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 13:50:47,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278930410] [2024-11-08 13:50:47,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278930410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 13:50:47,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 13:50:47,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 13:50:47,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687257758] [2024-11-08 13:50:47,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 13:50:47,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 13:50:47,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 13:50:47,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 13:50:47,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 13:50:47,983 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:50:48,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 13:50:48,039 INFO L93 Difference]: Finished difference Result 59 states and 77 transitions. [2024-11-08 13:50:48,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 13:50:48,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-08 13:50:48,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 13:50:48,041 INFO L225 Difference]: With dead ends: 59 [2024-11-08 13:50:48,041 INFO L226 Difference]: Without dead ends: 37 [2024-11-08 13:50:48,042 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 13:50:48,043 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 13 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 13:50:48,043 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 91 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 13:50:48,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-08 13:50:48,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2024-11-08 13:50:48,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 34 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:50:48,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2024-11-08 13:50:48,050 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 11 [2024-11-08 13:50:48,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 13:50:48,051 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions. [2024-11-08 13:50:48,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:50:48,051 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2024-11-08 13:50:48,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 13:50:48,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 13:50:48,053 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 13:50:48,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 13:50:48,053 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 13:50:48,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 13:50:48,056 INFO L85 PathProgramCache]: Analyzing trace with hash 459687026, now seen corresponding path program 1 times [2024-11-08 13:50:48,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 13:50:48,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112478069] [2024-11-08 13:50:48,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:50:48,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 13:50:48,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:50:48,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 13:50:48,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 13:50:48,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112478069] [2024-11-08 13:50:48,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112478069] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 13:50:48,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 13:50:48,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 13:50:48,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33598129] [2024-11-08 13:50:48,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 13:50:48,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 13:50:48,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 13:50:48,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 13:50:48,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 13:50:48,733 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:50:48,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 13:50:48,946 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2024-11-08 13:50:48,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 13:50:48,947 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-08 13:50:48,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 13:50:48,949 INFO L225 Difference]: With dead ends: 63 [2024-11-08 13:50:48,950 INFO L226 Difference]: Without dead ends: 61 [2024-11-08 13:50:48,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-08 13:50:48,952 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 39 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 13:50:48,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 109 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 13:50:48,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-08 13:50:48,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2024-11-08 13:50:48,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 53 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:50:48,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 71 transitions. [2024-11-08 13:50:48,965 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 71 transitions. Word has length 11 [2024-11-08 13:50:48,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 13:50:48,965 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 71 transitions. [2024-11-08 13:50:48,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:50:48,966 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 71 transitions. [2024-11-08 13:50:48,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-08 13:50:48,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 13:50:48,967 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 13:50:48,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 13:50:48,968 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 13:50:48,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 13:50:48,972 INFO L85 PathProgramCache]: Analyzing trace with hash 608373907, now seen corresponding path program 1 times [2024-11-08 13:50:48,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 13:50:48,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104016886] [2024-11-08 13:50:48,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:50:48,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 13:50:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:50:49,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 13:50:49,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 13:50:49,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104016886] [2024-11-08 13:50:49,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104016886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 13:50:49,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 13:50:49,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 13:50:49,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803910066] [2024-11-08 13:50:49,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 13:50:49,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 13:50:49,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 13:50:49,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 13:50:49,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 13:50:49,065 INFO L87 Difference]: Start difference. First operand 54 states and 71 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:50:49,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 13:50:49,133 INFO L93 Difference]: Finished difference Result 104 states and 137 transitions. [2024-11-08 13:50:49,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 13:50:49,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-08 13:50:49,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 13:50:49,137 INFO L225 Difference]: With dead ends: 104 [2024-11-08 13:50:49,137 INFO L226 Difference]: Without dead ends: 52 [2024-11-08 13:50:49,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 13:50:49,139 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 4 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 13:50:49,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 79 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 13:50:49,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-08 13:50:49,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-08 13:50:49,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.3137254901960784) internal successors, (67), 51 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:50:49,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2024-11-08 13:50:49,154 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 11 [2024-11-08 13:50:49,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 13:50:49,154 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2024-11-08 13:50:49,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:50:49,155 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2024-11-08 13:50:49,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-08 13:50:49,158 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 13:50:49,158 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 13:50:49,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 13:50:49,158 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 13:50:49,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 13:50:49,159 INFO L85 PathProgramCache]: Analyzing trace with hash -2110602732, now seen corresponding path program 1 times [2024-11-08 13:50:49,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 13:50:49,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666490727] [2024-11-08 13:50:49,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:50:49,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 13:50:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:50:49,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 13:50:49,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 13:50:49,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666490727] [2024-11-08 13:50:49,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666490727] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 13:50:49,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98453226] [2024-11-08 13:50:49,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:50:49,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 13:50:49,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 13:50:49,556 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) [2024-11-08 13:50:49,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 13:50:49,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:50:49,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-08 13:50:49,710 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 13:50:49,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-08 13:50:49,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-08 13:50:49,885 INFO L349 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2024-11-08 13:50:49,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 37 [2024-11-08 13:50:49,924 INFO L349 Elim1Store]: treesize reduction 16, result has 55.6 percent of original size [2024-11-08 13:50:49,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 34 [2024-11-08 13:50:50,259 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 13:50:50,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 102 [2024-11-08 13:50:50,306 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 13:50:50,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 114 [2024-11-08 13:50:50,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 13:50:50,864 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 13:50:50,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98453226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 13:50:50,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 13:50:50,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 9 [2024-11-08 13:50:50,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993325688] [2024-11-08 13:50:50,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 13:50:50,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 13:50:50,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 13:50:50,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 13:50:50,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-08 13:50:50,867 INFO L87 Difference]: Start difference. First operand 52 states and 67 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:50:51,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 13:50:51,196 INFO L93 Difference]: Finished difference Result 93 states and 123 transitions. [2024-11-08 13:50:51,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 13:50:51,196 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-08 13:50:51,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 13:50:51,197 INFO L225 Difference]: With dead ends: 93 [2024-11-08 13:50:51,197 INFO L226 Difference]: Without dead ends: 53 [2024-11-08 13:50:51,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-08 13:50:51,200 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 26 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 13:50:51,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 92 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 13:50:51,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-08 13:50:51,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2024-11-08 13:50:51,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.28) internal successors, (64), 50 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:50:51,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2024-11-08 13:50:51,211 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 14 [2024-11-08 13:50:51,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 13:50:51,212 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2024-11-08 13:50:51,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:50:51,212 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2024-11-08 13:50:51,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-08 13:50:51,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 13:50:51,215 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 13:50:51,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 13:50:51,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 13:50:51,420 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 13:50:51,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 13:50:51,420 INFO L85 PathProgramCache]: Analyzing trace with hash 233825732, now seen corresponding path program 1 times [2024-11-08 13:50:51,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 13:50:51,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128745987] [2024-11-08 13:50:51,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:50:51,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 13:50:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:50:51,557 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 13:50:51,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 13:50:51,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128745987] [2024-11-08 13:50:51,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128745987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 13:50:51,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 13:50:51,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 13:50:51,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297306094] [2024-11-08 13:50:51,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 13:50:51,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 13:50:51,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 13:50:51,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 13:50:51,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 13:50:51,559 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:50:51,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 13:50:51,599 INFO L93 Difference]: Finished difference Result 116 states and 149 transitions. [2024-11-08 13:50:51,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 13:50:51,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-08 13:50:51,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 13:50:51,601 INFO L225 Difference]: With dead ends: 116 [2024-11-08 13:50:51,601 INFO L226 Difference]: Without dead ends: 77 [2024-11-08 13:50:51,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 13:50:51,602 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 34 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 13:50:51,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 84 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 13:50:51,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-08 13:50:51,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2024-11-08 13:50:51,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.3) internal successors, (91), 70 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:50:51,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 91 transitions. [2024-11-08 13:50:51,610 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 91 transitions. Word has length 20 [2024-11-08 13:50:51,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 13:50:51,612 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 91 transitions. [2024-11-08 13:50:51,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:50:51,613 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 91 transitions. [2024-11-08 13:50:51,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-08 13:50:51,614 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 13:50:51,614 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 13:50:51,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 13:50:51,614 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 13:50:51,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 13:50:51,615 INFO L85 PathProgramCache]: Analyzing trace with hash -10903966, now seen corresponding path program 1 times [2024-11-08 13:50:51,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 13:50:51,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673578406] [2024-11-08 13:50:51,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:50:51,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 13:50:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:50:52,450 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 13:50:52,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 13:50:52,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673578406] [2024-11-08 13:50:52,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673578406] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 13:50:52,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005481556] [2024-11-08 13:50:52,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:50:52,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 13:50:52,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 13:50:52,454 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) [2024-11-08 13:50:52,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 13:50:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:50:52,617 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-11-08 13:50:52,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 13:50:52,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 13:50:52,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-08 13:50:52,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 13:50:52,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 4 [2024-11-08 13:50:52,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 1 [2024-11-08 13:50:52,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 13:50:52,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-08 13:50:52,896 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 13:50:52,896 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 13:50:52,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2024-11-08 13:50:53,081 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 13:50:53,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005481556] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 13:50:53,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 13:50:53,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 20 [2024-11-08 13:50:53,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152857457] [2024-11-08 13:50:53,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 13:50:53,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 13:50:53,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 13:50:53,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 13:50:53,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2024-11-08 13:50:53,084 INFO L87 Difference]: Start difference. First operand 71 states and 91 transitions. Second operand has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:50:54,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 13:50:54,186 INFO L93 Difference]: Finished difference Result 330 states and 436 transitions. [2024-11-08 13:50:54,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-08 13:50:54,187 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-08 13:50:54,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 13:50:54,188 INFO L225 Difference]: With dead ends: 330 [2024-11-08 13:50:54,188 INFO L226 Difference]: Without dead ends: 271 [2024-11-08 13:50:54,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=411, Invalid=1311, Unknown=0, NotChecked=0, Total=1722 [2024-11-08 13:50:54,194 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 309 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 13:50:54,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 533 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 13:50:54,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-08 13:50:54,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 203. [2024-11-08 13:50:54,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.2871287128712872) internal successors, (260), 202 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:50:54,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 260 transitions. [2024-11-08 13:50:54,231 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 260 transitions. Word has length 23 [2024-11-08 13:50:54,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 13:50:54,232 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 260 transitions. [2024-11-08 13:50:54,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:50:54,232 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 260 transitions. [2024-11-08 13:50:54,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-08 13:50:54,233 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 13:50:54,233 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 13:50:54,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-08 13:50:54,437 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,SelfDestructingSolverStorable6 [2024-11-08 13:50:54,438 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 13:50:54,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 13:50:54,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1581376036, now seen corresponding path program 2 times [2024-11-08 13:50:54,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 13:50:54,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044557212] [2024-11-08 13:50:54,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:50:54,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 13:50:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:50:55,489 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 13:50:55,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 13:50:55,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044557212] [2024-11-08 13:50:55,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044557212] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 13:50:55,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782267455] [2024-11-08 13:50:55,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 13:50:55,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 13:50:55,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 13:50:55,492 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) [2024-11-08 13:50:55,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 13:50:55,651 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 13:50:55,651 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 13:50:55,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-11-08 13:50:55,660 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 13:50:55,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 1 [2024-11-08 13:50:55,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-08 13:50:55,766 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-08 13:50:55,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2024-11-08 13:50:55,784 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2024-11-08 13:50:55,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2024-11-08 13:50:56,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-08 13:50:56,202 INFO L349 Elim1Store]: treesize reduction 16, result has 55.6 percent of original size [2024-11-08 13:50:56,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 88 treesize of output 68 [2024-11-08 13:50:56,221 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-08 13:50:56,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 80 treesize of output 75 [2024-11-08 13:50:56,246 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 13:50:56,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 101 [2024-11-08 13:50:56,285 INFO L349 Elim1Store]: treesize reduction 72, result has 37.4 percent of original size [2024-11-08 13:50:56,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 80 [2024-11-08 13:50:56,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 13:50:56,604 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 13:50:56,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 135 treesize of output 111 [2024-11-08 13:50:56,633 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 13:50:56,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 96 [2024-11-08 13:50:57,165 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 13:50:57,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 76 [2024-11-08 13:50:57,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-08 13:50:57,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-08 13:50:57,270 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 13:50:57,271 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 13:50:57,611 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 13:50:57,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 53 [2024-11-08 13:50:57,627 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 13:50:57,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 69 [2024-11-08 13:50:57,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-08 13:50:57,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 14 [2024-11-08 13:50:57,949 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 13:50:57,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782267455] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 13:50:57,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 13:50:57,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 21 [2024-11-08 13:50:57,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813762094] [2024-11-08 13:50:57,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 13:50:57,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-08 13:50:57,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 13:50:57,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-08 13:50:57,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2024-11-08 13:50:57,951 INFO L87 Difference]: Start difference. First operand 203 states and 260 transitions. Second operand has 21 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 21 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:50:59,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 13:50:59,992 INFO L93 Difference]: Finished difference Result 410 states and 534 transitions. [2024-11-08 13:50:59,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-08 13:50:59,993 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 21 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-08 13:50:59,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 13:50:59,995 INFO L225 Difference]: With dead ends: 410 [2024-11-08 13:50:59,995 INFO L226 Difference]: Without dead ends: 408 [2024-11-08 13:50:59,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=389, Invalid=1417, Unknown=0, NotChecked=0, Total=1806 [2024-11-08 13:50:59,997 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 189 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 13:50:59,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 466 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 13:50:59,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2024-11-08 13:51:00,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 241. [2024-11-08 13:51:00,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 1.2833333333333334) internal successors, (308), 240 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:00,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 308 transitions. [2024-11-08 13:51:00,027 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 308 transitions. Word has length 26 [2024-11-08 13:51:00,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 13:51:00,032 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 308 transitions. [2024-11-08 13:51:00,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 21 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:00,033 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 308 transitions. [2024-11-08 13:51:00,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-08 13:51:00,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 13:51:00,034 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 13:51:00,051 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 13:51:00,237 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 [2024-11-08 13:51:00,238 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 13:51:00,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 13:51:00,238 INFO L85 PathProgramCache]: Analyzing trace with hash -718868702, now seen corresponding path program 3 times [2024-11-08 13:51:00,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 13:51:00,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768509549] [2024-11-08 13:51:00,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:51:00,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 13:51:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:51:01,347 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 13:51:01,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 13:51:01,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768509549] [2024-11-08 13:51:01,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768509549] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 13:51:01,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186066237] [2024-11-08 13:51:01,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 13:51:01,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 13:51:01,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 13:51:01,349 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) [2024-11-08 13:51:01,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 13:51:01,578 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 13:51:01,579 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 13:51:01,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-11-08 13:51:01,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 13:51:01,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-08 13:51:01,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-08 13:51:01,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 13:51:01,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 13:51:01,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 13:51:01,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 13:51:01,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 33 [2024-11-08 13:51:01,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 13:51:01,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2024-11-08 13:51:01,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 1 [2024-11-08 13:51:01,761 INFO L349 Elim1Store]: treesize reduction 34, result has 46.0 percent of original size [2024-11-08 13:51:01,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 47 [2024-11-08 13:51:01,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2024-11-08 13:51:01,783 INFO L349 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2024-11-08 13:51:01,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2024-11-08 13:51:01,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 41 [2024-11-08 13:51:01,937 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 13:51:01,937 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 13:51:02,050 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 13:51:02,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 59 [2024-11-08 13:51:02,057 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 13:51:02,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 52 [2024-11-08 13:51:02,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-08 13:51:02,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-08 13:51:02,378 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 13:51:02,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2024-11-08 13:51:02,380 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 13:51:02,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-08 13:51:02,390 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 13:51:02,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-08 13:51:02,394 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 13:51:02,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2024-11-08 13:51:02,410 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 13:51:02,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186066237] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 13:51:02,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 13:51:02,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-08 13:51:02,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864516918] [2024-11-08 13:51:02,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 13:51:02,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 13:51:02,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 13:51:02,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 13:51:02,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-08 13:51:02,412 INFO L87 Difference]: Start difference. First operand 241 states and 308 transitions. Second operand has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:02,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 13:51:02,943 INFO L93 Difference]: Finished difference Result 522 states and 676 transitions. [2024-11-08 13:51:02,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 13:51:02,944 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-08 13:51:02,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 13:51:02,946 INFO L225 Difference]: With dead ends: 522 [2024-11-08 13:51:02,946 INFO L226 Difference]: Without dead ends: 336 [2024-11-08 13:51:02,947 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2024-11-08 13:51:02,947 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 40 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 13:51:02,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 384 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 13:51:02,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-11-08 13:51:02,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 331. [2024-11-08 13:51:02,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 1.2636363636363637) internal successors, (417), 330 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:02,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 417 transitions. [2024-11-08 13:51:03,000 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 417 transitions. Word has length 29 [2024-11-08 13:51:03,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 13:51:03,001 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 417 transitions. [2024-11-08 13:51:03,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.933333333333333) internal successors, (59), 15 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:03,002 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 417 transitions. [2024-11-08 13:51:03,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-08 13:51:03,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 13:51:03,005 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 13:51:03,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 13:51:03,205 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 [2024-11-08 13:51:03,206 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 13:51:03,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 13:51:03,206 INFO L85 PathProgramCache]: Analyzing trace with hash -100585591, now seen corresponding path program 1 times [2024-11-08 13:51:03,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 13:51:03,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416210707] [2024-11-08 13:51:03,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:51:03,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 13:51:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:51:03,290 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 13:51:03,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 13:51:03,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416210707] [2024-11-08 13:51:03,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416210707] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 13:51:03,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040191407] [2024-11-08 13:51:03,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:51:03,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 13:51:03,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 13:51:03,293 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) [2024-11-08 13:51:03,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 13:51:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:51:03,464 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 13:51:03,465 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 13:51:03,491 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 13:51:03,492 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 13:51:03,524 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 13:51:03,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040191407] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 13:51:03,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 13:51:03,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-08 13:51:03,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635566754] [2024-11-08 13:51:03,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 13:51:03,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 13:51:03,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 13:51:03,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 13:51:03,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-08 13:51:03,526 INFO L87 Difference]: Start difference. First operand 331 states and 417 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:03,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 13:51:03,700 INFO L93 Difference]: Finished difference Result 890 states and 1146 transitions. [2024-11-08 13:51:03,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 13:51:03,700 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-08 13:51:03,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 13:51:03,704 INFO L225 Difference]: With dead ends: 890 [2024-11-08 13:51:03,704 INFO L226 Difference]: Without dead ends: 597 [2024-11-08 13:51:03,706 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2024-11-08 13:51:03,707 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 101 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 13:51:03,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 157 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 13:51:03,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2024-11-08 13:51:03,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 498. [2024-11-08 13:51:03,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 497 states have (on average 1.2595573440643864) internal successors, (626), 497 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:03,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 626 transitions. [2024-11-08 13:51:03,757 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 626 transitions. Word has length 30 [2024-11-08 13:51:03,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 13:51:03,758 INFO L471 AbstractCegarLoop]: Abstraction has 498 states and 626 transitions. [2024-11-08 13:51:03,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:03,758 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 626 transitions. [2024-11-08 13:51:03,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-08 13:51:03,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 13:51:03,760 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 13:51:03,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 13:51:03,964 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 [2024-11-08 13:51:03,964 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 13:51:03,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 13:51:03,965 INFO L85 PathProgramCache]: Analyzing trace with hash 910531659, now seen corresponding path program 1 times [2024-11-08 13:51:03,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 13:51:03,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988058560] [2024-11-08 13:51:03,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:51:03,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 13:51:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:51:04,373 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 13:51:04,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 13:51:04,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988058560] [2024-11-08 13:51:04,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988058560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 13:51:04,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460317479] [2024-11-08 13:51:04,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:51:04,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 13:51:04,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 13:51:04,376 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) [2024-11-08 13:51:04,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 13:51:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:51:04,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-11-08 13:51:04,534 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 13:51:04,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 11 [2024-11-08 13:51:04,585 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2024-11-08 13:51:04,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2024-11-08 13:51:04,597 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-08 13:51:04,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2024-11-08 13:51:04,802 INFO L349 Elim1Store]: treesize reduction 45, result has 35.7 percent of original size [2024-11-08 13:51:04,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 32 [2024-11-08 13:51:04,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-08 13:51:04,863 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 13:51:04,863 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 13:51:06,279 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 13:51:06,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1099 treesize of output 1092 [2024-11-08 13:51:07,241 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 13:51:07,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460317479] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 13:51:07,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 13:51:07,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 10] total 19 [2024-11-08 13:51:07,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322411012] [2024-11-08 13:51:07,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 13:51:07,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-08 13:51:07,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 13:51:07,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-08 13:51:07,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=281, Unknown=1, NotChecked=0, Total=342 [2024-11-08 13:51:07,244 INFO L87 Difference]: Start difference. First operand 498 states and 626 transitions. Second operand has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 19 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:07,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 13:51:07,772 INFO L93 Difference]: Finished difference Result 946 states and 1200 transitions. [2024-11-08 13:51:07,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 13:51:07,773 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 19 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-08 13:51:07,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 13:51:07,775 INFO L225 Difference]: With dead ends: 946 [2024-11-08 13:51:07,775 INFO L226 Difference]: Without dead ends: 558 [2024-11-08 13:51:07,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=130, Invalid=469, Unknown=1, NotChecked=0, Total=600 [2024-11-08 13:51:07,777 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 44 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 13:51:07,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 265 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 13:51:07,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-11-08 13:51:07,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 499. [2024-11-08 13:51:07,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 498 states have (on average 1.2590361445783131) internal successors, (627), 498 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:07,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 627 transitions. [2024-11-08 13:51:07,827 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 627 transitions. Word has length 30 [2024-11-08 13:51:07,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 13:51:07,827 INFO L471 AbstractCegarLoop]: Abstraction has 499 states and 627 transitions. [2024-11-08 13:51:07,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 19 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:07,827 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 627 transitions. [2024-11-08 13:51:07,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-08 13:51:07,828 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 13:51:07,828 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 13:51:07,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 13:51:08,028 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 [2024-11-08 13:51:08,029 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 13:51:08,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 13:51:08,030 INFO L85 PathProgramCache]: Analyzing trace with hash -903858206, now seen corresponding path program 1 times [2024-11-08 13:51:08,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 13:51:08,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251708125] [2024-11-08 13:51:08,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:51:08,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 13:51:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:51:08,265 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 13:51:08,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 13:51:08,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251708125] [2024-11-08 13:51:08,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251708125] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 13:51:08,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651518852] [2024-11-08 13:51:08,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:51:08,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 13:51:08,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 13:51:08,268 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) [2024-11-08 13:51:08,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 13:51:08,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:51:08,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-08 13:51:08,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 13:51:08,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2024-11-08 13:51:08,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2024-11-08 13:51:08,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 13:51:08,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-08 13:51:08,511 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 13:51:08,511 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 13:51:08,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2024-11-08 13:51:08,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 13:51:08,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 13:51:08,595 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 13:51:08,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651518852] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 13:51:08,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 13:51:08,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2024-11-08 13:51:08,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326822532] [2024-11-08 13:51:08,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 13:51:08,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 13:51:08,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 13:51:08,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 13:51:08,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-08 13:51:08,597 INFO L87 Difference]: Start difference. First operand 499 states and 627 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:08,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 13:51:08,804 INFO L93 Difference]: Finished difference Result 900 states and 1144 transitions. [2024-11-08 13:51:08,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 13:51:08,805 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-08 13:51:08,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 13:51:08,807 INFO L225 Difference]: With dead ends: 900 [2024-11-08 13:51:08,807 INFO L226 Difference]: Without dead ends: 396 [2024-11-08 13:51:08,808 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-08 13:51:08,809 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 56 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 13:51:08,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 118 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 13:51:08,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-11-08 13:51:08,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 333. [2024-11-08 13:51:08,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 332 states have (on average 1.2530120481927711) internal successors, (416), 332 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:08,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 416 transitions. [2024-11-08 13:51:08,844 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 416 transitions. Word has length 31 [2024-11-08 13:51:08,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 13:51:08,844 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 416 transitions. [2024-11-08 13:51:08,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:08,844 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 416 transitions. [2024-11-08 13:51:08,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-08 13:51:08,845 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 13:51:08,845 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 13:51:08,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 13:51:09,049 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 [2024-11-08 13:51:09,050 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 13:51:09,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 13:51:09,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1296885216, now seen corresponding path program 1 times [2024-11-08 13:51:09,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 13:51:09,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528037617] [2024-11-08 13:51:09,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:51:09,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 13:51:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:51:09,107 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 13:51:09,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 13:51:09,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528037617] [2024-11-08 13:51:09,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528037617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 13:51:09,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 13:51:09,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 13:51:09,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638018290] [2024-11-08 13:51:09,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 13:51:09,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 13:51:09,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 13:51:09,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 13:51:09,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 13:51:09,109 INFO L87 Difference]: Start difference. First operand 333 states and 416 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:09,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 13:51:09,145 INFO L93 Difference]: Finished difference Result 652 states and 827 transitions. [2024-11-08 13:51:09,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 13:51:09,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-08 13:51:09,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 13:51:09,147 INFO L225 Difference]: With dead ends: 652 [2024-11-08 13:51:09,148 INFO L226 Difference]: Without dead ends: 354 [2024-11-08 13:51:09,148 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 [2024-11-08 13:51:09,150 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 3 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 13:51:09,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 59 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 13:51:09,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2024-11-08 13:51:09,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 343. [2024-11-08 13:51:09,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 1.2660818713450293) internal successors, (433), 342 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:09,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 433 transitions. [2024-11-08 13:51:09,183 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 433 transitions. Word has length 31 [2024-11-08 13:51:09,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 13:51:09,183 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 433 transitions. [2024-11-08 13:51:09,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:09,183 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 433 transitions. [2024-11-08 13:51:09,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-08 13:51:09,184 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 13:51:09,184 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-08 13:51:09,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 13:51:09,184 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 13:51:09,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 13:51:09,185 INFO L85 PathProgramCache]: Analyzing trace with hash 2090125761, now seen corresponding path program 1 times [2024-11-08 13:51:09,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 13:51:09,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770340829] [2024-11-08 13:51:09,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:51:09,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 13:51:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:51:09,522 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 13:51:09,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 13:51:09,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770340829] [2024-11-08 13:51:09,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770340829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 13:51:09,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461886242] [2024-11-08 13:51:09,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:51:09,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 13:51:09,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 13:51:09,525 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) [2024-11-08 13:51:09,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 13:51:09,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:51:09,706 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-11-08 13:51:09,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 13:51:09,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-11-08 13:51:09,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 13:51:09,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 13:51:09,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-11-08 13:51:09,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2024-11-08 13:51:09,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 13:51:09,958 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 13:51:09,958 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 13:51:10,083 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 13:51:10,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461886242] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 13:51:10,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 13:51:10,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 7] total 15 [2024-11-08 13:51:10,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200560681] [2024-11-08 13:51:10,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 13:51:10,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-08 13:51:10,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 13:51:10,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-08 13:51:10,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2024-11-08 13:51:10,085 INFO L87 Difference]: Start difference. First operand 343 states and 433 transitions. Second operand has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:10,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 13:51:10,528 INFO L93 Difference]: Finished difference Result 976 states and 1235 transitions. [2024-11-08 13:51:10,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-08 13:51:10,529 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-08 13:51:10,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 13:51:10,532 INFO L225 Difference]: With dead ends: 976 [2024-11-08 13:51:10,532 INFO L226 Difference]: Without dead ends: 668 [2024-11-08 13:51:10,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2024-11-08 13:51:10,533 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 141 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 13:51:10,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 322 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 13:51:10,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2024-11-08 13:51:10,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 584. [2024-11-08 13:51:10,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 583 states have (on average 1.2452830188679245) internal successors, (726), 583 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:10,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 726 transitions. [2024-11-08 13:51:10,592 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 726 transitions. Word has length 34 [2024-11-08 13:51:10,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 13:51:10,593 INFO L471 AbstractCegarLoop]: Abstraction has 584 states and 726 transitions. [2024-11-08 13:51:10,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:10,593 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 726 transitions. [2024-11-08 13:51:10,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-08 13:51:10,593 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 13:51:10,594 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1] [2024-11-08 13:51:10,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 13:51:10,797 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,SelfDestructingSolverStorable13 [2024-11-08 13:51:10,798 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 13:51:10,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 13:51:10,798 INFO L85 PathProgramCache]: Analyzing trace with hash -837702382, now seen corresponding path program 4 times [2024-11-08 13:51:10,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 13:51:10,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611960380] [2024-11-08 13:51:10,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:51:10,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 13:51:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:51:11,489 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 40 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 13:51:11,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 13:51:11,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611960380] [2024-11-08 13:51:11,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611960380] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 13:51:11,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571409710] [2024-11-08 13:51:11,493 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 13:51:11,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 13:51:11,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 13:51:11,495 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) [2024-11-08 13:51:11,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 13:51:11,752 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 13:51:11,752 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 13:51:11,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-11-08 13:51:11,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 13:51:11,789 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2024-11-08 13:51:11,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2024-11-08 13:51:11,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-08 13:51:11,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-08 13:51:11,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2024-11-08 13:51:11,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 29 [2024-11-08 13:51:11,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-11-08 13:51:11,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2024-11-08 13:51:11,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2024-11-08 13:51:11,965 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 13:51:11,965 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 13:51:12,087 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 43 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-08 13:51:12,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571409710] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 13:51:12,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 13:51:12,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-08 13:51:12,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421195385] [2024-11-08 13:51:12,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 13:51:12,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-08 13:51:12,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 13:51:12,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-08 13:51:12,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-11-08 13:51:12,089 INFO L87 Difference]: Start difference. First operand 584 states and 726 transitions. Second operand has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 17 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:12,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 13:51:12,707 INFO L93 Difference]: Finished difference Result 1317 states and 1646 transitions. [2024-11-08 13:51:12,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-08 13:51:12,708 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 17 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-08 13:51:12,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 13:51:12,711 INFO L225 Difference]: With dead ends: 1317 [2024-11-08 13:51:12,711 INFO L226 Difference]: Without dead ends: 758 [2024-11-08 13:51:12,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2024-11-08 13:51:12,713 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 220 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 13:51:12,713 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 551 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 13:51:12,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2024-11-08 13:51:12,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 619. [2024-11-08 13:51:12,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 618 states have (on average 1.2394822006472492) internal successors, (766), 618 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:12,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 766 transitions. [2024-11-08 13:51:12,765 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 766 transitions. Word has length 41 [2024-11-08 13:51:12,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 13:51:12,765 INFO L471 AbstractCegarLoop]: Abstraction has 619 states and 766 transitions. [2024-11-08 13:51:12,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 17 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:12,766 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 766 transitions. [2024-11-08 13:51:12,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-08 13:51:12,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 13:51:12,767 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1] [2024-11-08 13:51:12,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 13:51:12,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-08 13:51:12,971 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 13:51:12,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 13:51:12,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1246935980, now seen corresponding path program 5 times [2024-11-08 13:51:12,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 13:51:12,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201061915] [2024-11-08 13:51:12,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:51:12,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 13:51:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:51:15,497 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 13:51:15,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 13:51:15,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201061915] [2024-11-08 13:51:15,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201061915] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 13:51:15,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277424959] [2024-11-08 13:51:15,498 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 13:51:15,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 13:51:15,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 13:51:15,500 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 13:51:15,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 13:51:15,772 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-08 13:51:15,772 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 13:51:15,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 144 conjuncts are in the unsatisfiable core [2024-11-08 13:51:15,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 13:51:15,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 13:51:15,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-08 13:51:15,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 13:51:15,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-08 13:51:15,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 17 [2024-11-08 13:51:15,887 INFO L349 Elim1Store]: treesize reduction 47, result has 21.7 percent of original size [2024-11-08 13:51:15,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 26 [2024-11-08 13:51:15,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 13:51:15,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 13:51:16,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-08 13:51:16,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 26 [2024-11-08 13:51:16,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 22 [2024-11-08 13:51:16,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 50 [2024-11-08 13:51:16,208 INFO L349 Elim1Store]: treesize reduction 49, result has 45.6 percent of original size [2024-11-08 13:51:16,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 47 [2024-11-08 13:51:16,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 13:51:16,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 36 [2024-11-08 13:51:16,240 INFO L349 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2024-11-08 13:51:16,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 58 [2024-11-08 13:51:16,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 29 [2024-11-08 13:51:16,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 87 [2024-11-08 13:51:16,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 67 [2024-11-08 13:51:16,585 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-08 13:51:16,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 29 [2024-11-08 13:51:16,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2024-11-08 13:51:16,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-08 13:51:16,653 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 26 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 13:51:16,653 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 13:51:16,786 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 13:51:16,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 68 [2024-11-08 13:51:16,793 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 13:51:16,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 59 [2024-11-08 13:51:17,039 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 13:51:17,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 119 [2024-11-08 13:51:17,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 24 [2024-11-08 13:51:17,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2024-11-08 13:51:17,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2024-11-08 13:51:17,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2024-11-08 13:51:17,643 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 13:51:17,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 32 [2024-11-08 13:51:17,647 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 13:51:17,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-08 13:51:17,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2024-11-08 13:51:17,659 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2024-11-08 13:51:17,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 1 [2024-11-08 13:51:17,667 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-08 13:51:17,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2024-11-08 13:51:17,758 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 16 proven. 47 refuted. 9 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 13:51:17,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277424959] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 13:51:17,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 13:51:17,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 13] total 35 [2024-11-08 13:51:17,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956386313] [2024-11-08 13:51:17,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 13:51:17,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-08 13:51:17,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 13:51:17,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-08 13:51:17,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1045, Unknown=3, NotChecked=0, Total=1190 [2024-11-08 13:51:17,760 INFO L87 Difference]: Start difference. First operand 619 states and 766 transitions. Second operand has 35 states, 35 states have (on average 3.6285714285714286) internal successors, (127), 35 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:19,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 13:51:19,764 INFO L93 Difference]: Finished difference Result 764 states and 942 transitions. [2024-11-08 13:51:19,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-08 13:51:19,765 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.6285714285714286) internal successors, (127), 35 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-08 13:51:19,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 13:51:19,767 INFO L225 Difference]: With dead ends: 764 [2024-11-08 13:51:19,767 INFO L226 Difference]: Without dead ends: 762 [2024-11-08 13:51:19,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=560, Invalid=3097, Unknown=3, NotChecked=0, Total=3660 [2024-11-08 13:51:19,769 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 246 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 13:51:19,769 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 666 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 13:51:19,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2024-11-08 13:51:19,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 667. [2024-11-08 13:51:19,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 666 states have (on average 1.2417417417417418) internal successors, (827), 666 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:19,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 827 transitions. [2024-11-08 13:51:19,832 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 827 transitions. Word has length 44 [2024-11-08 13:51:19,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 13:51:19,832 INFO L471 AbstractCegarLoop]: Abstraction has 667 states and 827 transitions. [2024-11-08 13:51:19,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.6285714285714286) internal successors, (127), 35 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:19,833 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 827 transitions. [2024-11-08 13:51:19,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-08 13:51:19,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 13:51:19,834 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1] [2024-11-08 13:51:19,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-08 13:51:20,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 13:51:20,038 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 13:51:20,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 13:51:20,038 INFO L85 PathProgramCache]: Analyzing trace with hash -293724430, now seen corresponding path program 6 times [2024-11-08 13:51:20,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 13:51:20,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696735076] [2024-11-08 13:51:20,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:51:20,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 13:51:20,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:51:22,323 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 6 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 13:51:22,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 13:51:22,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696735076] [2024-11-08 13:51:22,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696735076] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 13:51:22,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984816364] [2024-11-08 13:51:22,323 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 13:51:22,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 13:51:22,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 13:51:22,324 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 13:51:22,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 13:51:22,678 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-08 13:51:22,678 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 13:51:22,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 161 conjuncts are in the unsatisfiable core [2024-11-08 13:51:22,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 13:51:22,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-08 13:51:22,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 13:51:22,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 13:51:22,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 13:51:22,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 13:51:22,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-08 13:51:22,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 17 [2024-11-08 13:51:22,790 INFO L349 Elim1Store]: treesize reduction 47, result has 21.7 percent of original size [2024-11-08 13:51:22,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 26 [2024-11-08 13:51:23,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 26 [2024-11-08 13:51:23,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 22 [2024-11-08 13:51:23,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 61 [2024-11-08 13:51:23,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 13:51:23,083 INFO L349 Elim1Store]: treesize reduction 51, result has 8.9 percent of original size [2024-11-08 13:51:23,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 51 [2024-11-08 13:51:23,116 INFO L349 Elim1Store]: treesize reduction 104, result has 55.7 percent of original size [2024-11-08 13:51:23,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 141 [2024-11-08 13:51:23,170 INFO L349 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2024-11-08 13:51:23,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 58 [2024-11-08 13:51:23,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-08 13:51:23,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 108 [2024-11-08 13:51:23,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 84 [2024-11-08 13:51:23,488 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 32 proven. 59 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 13:51:23,488 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 13:51:23,600 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 13:51:23,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 133 [2024-11-08 13:51:23,604 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 13:51:23,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 106 [2024-11-08 13:51:24,587 INFO L349 Elim1Store]: treesize reduction 55, result has 36.0 percent of original size [2024-11-08 13:51:24,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 230 treesize of output 210 [2024-11-08 13:51:24,607 INFO L349 Elim1Store]: treesize reduction 55, result has 36.0 percent of original size [2024-11-08 13:51:24,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 202 treesize of output 182 [2024-11-08 13:51:24,653 INFO L349 Elim1Store]: treesize reduction 69, result has 43.4 percent of original size [2024-11-08 13:51:24,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 284 treesize of output 278 [2024-11-08 13:51:24,678 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 13:51:24,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 222 treesize of output 237 [2024-11-08 13:51:24,763 INFO L349 Elim1Store]: treesize reduction 110, result has 44.2 percent of original size [2024-11-08 13:51:24,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 458 treesize of output 460 [2024-11-08 13:51:24,811 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 13:51:24,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 274 treesize of output 270 [2024-11-08 13:51:24,845 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 13:51:24,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 256 [2024-11-08 13:51:24,867 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 13:51:24,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 207 treesize of output 199 [2024-11-08 13:51:25,386 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 14 proven. 71 refuted. 6 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 13:51:25,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984816364] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 13:51:25,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 13:51:25,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2024-11-08 13:51:25,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835468123] [2024-11-08 13:51:25,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 13:51:25,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-08 13:51:25,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 13:51:25,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-08 13:51:25,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=858, Unknown=1, NotChecked=0, Total=992 [2024-11-08 13:51:25,388 INFO L87 Difference]: Start difference. First operand 667 states and 827 transitions. Second operand has 32 states, 32 states have (on average 3.875) internal successors, (124), 32 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:27,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 13:51:27,294 INFO L93 Difference]: Finished difference Result 1490 states and 1849 transitions. [2024-11-08 13:51:27,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-08 13:51:27,295 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.875) internal successors, (124), 32 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-08 13:51:27,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 13:51:27,297 INFO L225 Difference]: With dead ends: 1490 [2024-11-08 13:51:27,297 INFO L226 Difference]: Without dead ends: 858 [2024-11-08 13:51:27,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=338, Invalid=1917, Unknown=1, NotChecked=0, Total=2256 [2024-11-08 13:51:27,299 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 170 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 13:51:27,299 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 928 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 13:51:27,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2024-11-08 13:51:27,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 751. [2024-11-08 13:51:27,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 750 states have (on average 1.236) internal successors, (927), 750 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:27,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 927 transitions. [2024-11-08 13:51:27,372 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 927 transitions. Word has length 47 [2024-11-08 13:51:27,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 13:51:27,372 INFO L471 AbstractCegarLoop]: Abstraction has 751 states and 927 transitions. [2024-11-08 13:51:27,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.875) internal successors, (124), 32 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:27,373 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 927 transitions. [2024-11-08 13:51:27,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-08 13:51:27,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 13:51:27,373 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 13:51:27,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-08 13:51:27,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 13:51:27,574 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 13:51:27,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 13:51:27,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1929962547, now seen corresponding path program 2 times [2024-11-08 13:51:27,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 13:51:27,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372276040] [2024-11-08 13:51:27,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:51:27,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 13:51:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:51:28,117 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-08 13:51:28,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 13:51:28,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372276040] [2024-11-08 13:51:28,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372276040] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 13:51:28,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386148200] [2024-11-08 13:51:28,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 13:51:28,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 13:51:28,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 13:51:28,120 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 13:51:28,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 13:51:28,347 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 13:51:28,347 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 13:51:28,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-11-08 13:51:28,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 13:51:28,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-08 13:51:28,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-08 13:51:28,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 13:51:28,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 41 [2024-11-08 13:51:28,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 13:51:28,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 41 [2024-11-08 13:51:28,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 27 [2024-11-08 13:51:28,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2024-11-08 13:51:28,540 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 41 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 13:51:28,540 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 13:51:28,654 INFO L349 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2024-11-08 13:51:28,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 33 [2024-11-08 13:51:28,662 INFO L349 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2024-11-08 13:51:28,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 12 [2024-11-08 13:51:28,689 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 42 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-08 13:51:28,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386148200] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 13:51:28,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 13:51:28,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 18 [2024-11-08 13:51:28,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785894136] [2024-11-08 13:51:28,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 13:51:28,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 13:51:28,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 13:51:28,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 13:51:28,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-11-08 13:51:28,691 INFO L87 Difference]: Start difference. First operand 751 states and 927 transitions. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:29,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 13:51:29,232 INFO L93 Difference]: Finished difference Result 1628 states and 2036 transitions. [2024-11-08 13:51:29,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-08 13:51:29,232 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-08 13:51:29,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 13:51:29,235 INFO L225 Difference]: With dead ends: 1628 [2024-11-08 13:51:29,235 INFO L226 Difference]: Without dead ends: 912 [2024-11-08 13:51:29,236 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2024-11-08 13:51:29,237 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 135 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 13:51:29,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 370 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 13:51:29,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2024-11-08 13:51:29,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 780. [2024-11-08 13:51:29,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 779 states have (on average 1.2310654685494222) internal successors, (959), 779 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:29,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 959 transitions. [2024-11-08 13:51:29,319 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 959 transitions. Word has length 48 [2024-11-08 13:51:29,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 13:51:29,320 INFO L471 AbstractCegarLoop]: Abstraction has 780 states and 959 transitions. [2024-11-08 13:51:29,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:29,320 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 959 transitions. [2024-11-08 13:51:29,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-08 13:51:29,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 13:51:29,320 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 13:51:29,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-08 13:51:29,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 13:51:29,521 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 13:51:29,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 13:51:29,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1846086890, now seen corresponding path program 3 times [2024-11-08 13:51:29,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 13:51:29,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625916134] [2024-11-08 13:51:29,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:51:29,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 13:51:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:51:30,824 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 13:51:30,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 13:51:30,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625916134] [2024-11-08 13:51:30,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625916134] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 13:51:30,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723075011] [2024-11-08 13:51:30,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 13:51:30,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 13:51:30,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 13:51:30,827 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 13:51:30,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 13:51:31,101 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-08 13:51:31,101 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 13:51:31,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 119 conjuncts are in the unsatisfiable core [2024-11-08 13:51:31,111 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 13:51:31,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-08 13:51:31,154 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2024-11-08 13:51:31,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2024-11-08 13:51:31,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-08 13:51:31,316 INFO L349 Elim1Store]: treesize reduction 16, result has 55.6 percent of original size [2024-11-08 13:51:31,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 46 [2024-11-08 13:51:31,344 INFO L349 Elim1Store]: treesize reduction 4, result has 91.8 percent of original size [2024-11-08 13:51:31,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 67 [2024-11-08 13:51:31,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 13:51:31,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 1 [2024-11-08 13:51:31,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 20 [2024-11-08 13:51:31,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2024-11-08 13:51:31,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 12 [2024-11-08 13:51:31,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-08 13:51:31,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-08 13:51:31,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-08 13:51:31,702 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 13:51:31,702 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 13:51:31,745 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1632 (Array Int Int))) (< 0 (select (select (store |c_#memory_int#2| |c_ULTIMATE.start_choose_next_~node~0#1.base| v_ArrVal_1632) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#queue~0#1.base|) |c_ULTIMATE.start_main_~#queue~0#1.offset|)) (+ (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#queue~0#1.base|) |c_ULTIMATE.start_main_~#queue~0#1.offset|) 4)))) is different from false [2024-11-08 13:51:32,933 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 13:51:32,934 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 39 [2024-11-08 13:51:32,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 31 [2024-11-08 13:51:32,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-11-08 13:51:33,077 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 13:51:33,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 56 [2024-11-08 13:51:33,134 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 6 trivial. 3 not checked. [2024-11-08 13:51:33,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723075011] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 13:51:33,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 13:51:33,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2024-11-08 13:51:33,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151449445] [2024-11-08 13:51:33,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 13:51:33,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-08 13:51:33,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 13:51:33,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-08 13:51:33,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=506, Unknown=12, NotChecked=46, Total=650 [2024-11-08 13:51:33,136 INFO L87 Difference]: Start difference. First operand 780 states and 959 transitions. Second operand has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:33,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 13:51:33,963 INFO L93 Difference]: Finished difference Result 982 states and 1214 transitions. [2024-11-08 13:51:33,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-08 13:51:33,964 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-11-08 13:51:33,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 13:51:33,968 INFO L225 Difference]: With dead ends: 982 [2024-11-08 13:51:33,968 INFO L226 Difference]: Without dead ends: 980 [2024-11-08 13:51:33,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 79 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=240, Invalid=1158, Unknown=12, NotChecked=72, Total=1482 [2024-11-08 13:51:33,969 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 117 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 108 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 13:51:33,970 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 467 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 437 Invalid, 0 Unknown, 108 Unchecked, 0.4s Time] [2024-11-08 13:51:33,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2024-11-08 13:51:34,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 876. [2024-11-08 13:51:34,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 875 states have (on average 1.2262857142857142) internal successors, (1073), 875 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:34,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1073 transitions. [2024-11-08 13:51:34,071 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1073 transitions. Word has length 48 [2024-11-08 13:51:34,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 13:51:34,072 INFO L471 AbstractCegarLoop]: Abstraction has 876 states and 1073 transitions. [2024-11-08 13:51:34,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:34,072 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1073 transitions. [2024-11-08 13:51:34,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 13:51:34,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 13:51:34,073 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 13:51:34,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-08 13:51:34,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 13:51:34,278 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 13:51:34,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 13:51:34,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1935523169, now seen corresponding path program 1 times [2024-11-08 13:51:34,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 13:51:34,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948833053] [2024-11-08 13:51:34,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:51:34,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 13:51:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:51:35,103 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 13:51:35,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 13:51:35,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948833053] [2024-11-08 13:51:35,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948833053] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 13:51:35,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642403478] [2024-11-08 13:51:35,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:51:35,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 13:51:35,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 13:51:35,107 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 13:51:35,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 13:51:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:51:35,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 123 conjuncts are in the unsatisfiable core [2024-11-08 13:51:35,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 13:51:35,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-08 13:51:35,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 13:51:35,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 4 [2024-11-08 13:51:35,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 1 [2024-11-08 13:51:35,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 13:51:35,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2024-11-08 13:51:35,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 13:51:35,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 15 [2024-11-08 13:51:35,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 13:51:35,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-08 13:51:35,679 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 13:51:35,680 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 13:51:36,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2024-11-08 13:51:36,053 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 13:51:36,136 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 5 proven. 37 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-08 13:51:36,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642403478] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 13:51:36,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 13:51:36,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 28 [2024-11-08 13:51:36,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947742627] [2024-11-08 13:51:36,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 13:51:36,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-08 13:51:36,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 13:51:36,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-08 13:51:36,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=626, Unknown=5, NotChecked=0, Total=756 [2024-11-08 13:51:36,137 INFO L87 Difference]: Start difference. First operand 876 states and 1073 transitions. Second operand has 28 states, 28 states have (on average 4.5) internal successors, (126), 28 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:37,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 13:51:37,755 INFO L93 Difference]: Finished difference Result 1825 states and 2249 transitions. [2024-11-08 13:51:37,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-08 13:51:37,756 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.5) internal successors, (126), 28 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-08 13:51:37,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 13:51:37,758 INFO L225 Difference]: With dead ends: 1825 [2024-11-08 13:51:37,759 INFO L226 Difference]: Without dead ends: 1080 [2024-11-08 13:51:37,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=546, Invalid=2419, Unknown=5, NotChecked=0, Total=2970 [2024-11-08 13:51:37,761 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 254 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 13:51:37,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 727 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 13:51:37,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2024-11-08 13:51:37,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 930. [2024-11-08 13:51:37,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 929 states have (on average 1.2292787944025834) internal successors, (1142), 929 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:37,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1142 transitions. [2024-11-08 13:51:37,868 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1142 transitions. Word has length 49 [2024-11-08 13:51:37,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 13:51:37,869 INFO L471 AbstractCegarLoop]: Abstraction has 930 states and 1142 transitions. [2024-11-08 13:51:37,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.5) internal successors, (126), 28 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:37,869 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1142 transitions. [2024-11-08 13:51:37,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 13:51:37,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 13:51:37,870 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 13:51:37,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-08 13:51:38,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 13:51:38,071 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 13:51:38,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 13:51:38,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1628300239, now seen corresponding path program 2 times [2024-11-08 13:51:38,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 13:51:38,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207958984] [2024-11-08 13:51:38,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:51:38,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 13:51:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:51:38,600 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 13 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-08 13:51:38,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 13:51:38,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207958984] [2024-11-08 13:51:38,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207958984] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 13:51:38,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059231309] [2024-11-08 13:51:38,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 13:51:38,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 13:51:38,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 13:51:38,603 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 13:51:38,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 13:51:38,919 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 13:51:38,919 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 13:51:38,921 INFO L255 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-08 13:51:38,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 13:51:38,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 11 [2024-11-08 13:51:38,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 13:51:38,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 13:51:39,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-08 13:51:39,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-08 13:51:39,102 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 13 proven. 26 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 13:51:39,102 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 13:51:39,210 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 13 proven. 26 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 13:51:39,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059231309] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 13:51:39,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 13:51:39,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18 [2024-11-08 13:51:39,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496315979] [2024-11-08 13:51:39,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 13:51:39,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 13:51:39,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 13:51:39,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 13:51:39,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-08 13:51:39,212 INFO L87 Difference]: Start difference. First operand 930 states and 1142 transitions. Second operand has 18 states, 18 states have (on average 6.222222222222222) internal successors, (112), 18 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:39,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 13:51:39,745 INFO L93 Difference]: Finished difference Result 2115 states and 2584 transitions. [2024-11-08 13:51:39,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-08 13:51:39,745 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.222222222222222) internal successors, (112), 18 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-08 13:51:39,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 13:51:39,748 INFO L225 Difference]: With dead ends: 2115 [2024-11-08 13:51:39,749 INFO L226 Difference]: Without dead ends: 1300 [2024-11-08 13:51:39,750 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2024-11-08 13:51:39,750 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 89 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 13:51:39,751 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 499 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 13:51:39,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2024-11-08 13:51:39,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1277. [2024-11-08 13:51:39,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 1276 states have (on average 1.2170846394984327) internal successors, (1553), 1276 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:39,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1553 transitions. [2024-11-08 13:51:39,893 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1553 transitions. Word has length 49 [2024-11-08 13:51:39,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 13:51:39,893 INFO L471 AbstractCegarLoop]: Abstraction has 1277 states and 1553 transitions. [2024-11-08 13:51:39,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.222222222222222) internal successors, (112), 18 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 13:51:39,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1553 transitions. [2024-11-08 13:51:39,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-08 13:51:39,894 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 13:51:39,894 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 13:51:39,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-08 13:51:40,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 13:51:40,095 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 13:51:40,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 13:51:40,095 INFO L85 PathProgramCache]: Analyzing trace with hash -277772644, now seen corresponding path program 4 times [2024-11-08 13:51:40,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 13:51:40,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294083873] [2024-11-08 13:51:40,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 13:51:40,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 13:51:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 13:51:41,858 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 13:51:41,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 13:51:41,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294083873] [2024-11-08 13:51:41,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294083873] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 13:51:41,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611682660] [2024-11-08 13:51:41,858 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 13:51:41,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 13:51:41,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 13:51:41,859 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 13:51:41,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 13:51:42,156 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 13:51:42,156 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 13:51:42,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 146 conjuncts are in the unsatisfiable core [2024-11-08 13:51:42,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 13:51:42,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-08 13:51:42,213 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2024-11-08 13:51:42,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2024-11-08 13:51:42,223 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2024-11-08 13:51:42,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2024-11-08 13:51:42,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2024-11-08 13:51:42,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2024-11-08 13:51:42,494 INFO L349 Elim1Store]: treesize reduction 16, result has 55.6 percent of original size [2024-11-08 13:51:42,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 86 treesize of output 74 [2024-11-08 13:51:42,513 INFO L349 Elim1Store]: treesize reduction 16, result has 55.6 percent of original size [2024-11-08 13:51:42,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 102 treesize of output 90 [2024-11-08 13:51:42,545 INFO L349 Elim1Store]: treesize reduction 4, result has 93.4 percent of original size [2024-11-08 13:51:42,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 123 [2024-11-08 13:51:42,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 13:51:42,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 49 [2024-11-08 13:51:42,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 41 [2024-11-08 13:51:42,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 13:51:42,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 44 [2024-11-08 13:51:43,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 13:51:43,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 385 treesize of output 219 [2024-11-08 13:51:43,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 291 treesize of output 222 [2024-11-08 13:51:43,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 238 treesize of output 47 [2024-11-08 13:51:43,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 64 [2024-11-08 13:51:43,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 47 [2024-11-08 13:51:43,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 23 [2024-11-08 13:51:43,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2024-11-08 13:51:43,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-08 13:51:43,246 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 1 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 13:51:43,246 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 13:51:43,544 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2043 Int) (v_ArrVal_2044 Int) (v_ArrVal_2047 (Array Int Int)) (v_ArrVal_2049 Int) (v_ArrVal_2048 Int) (v_ArrVal_2051 (Array Int Int))) (let ((.cse6 (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_choose_next_~node~0#1.base|)) (.cse11 (+ |c_ULTIMATE.start_choose_next_~node~0#1.offset| 8))) (let ((.cse10 (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_choose_next_~node~0#1.base|)) (.cse1 (store |c_#memory_int#2| |c_ULTIMATE.start_choose_next_~node~0#1.base| v_ArrVal_2047)) (.cse2 (select .cse6 .cse11))) (let ((.cse3 (select .cse1 .cse2)) (.cse4 (+ (select .cse10 .cse11) 4))) (let ((.cse0 (select .cse3 .cse4))) (or (= .cse0 1) (< (+ v_ArrVal_2049 1) .cse0) (< 0 (let ((.cse7 (+ |c_ULTIMATE.start_choose_next_~node~0#1.offset| 4)) (.cse8 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~#queue~0#1.base|) |c_ULTIMATE.start_main_~#queue~0#1.offset|)) (.cse9 (+ (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~#queue~0#1.base|) |c_ULTIMATE.start_main_~#queue~0#1.offset|) 8))) (select (select (store .cse1 .cse2 (store .cse3 .cse4 v_ArrVal_2049)) (select (select (let ((.cse5 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_choose_next_~node~0#1.base| (store .cse6 .cse7 v_ArrVal_2043)))) (store .cse5 .cse2 (store (select .cse5 .cse2) .cse4 v_ArrVal_2048))) .cse8) .cse9)) (+ (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_choose_next_~node~0#1.base| (store .cse10 .cse7 v_ArrVal_2044)) .cse2 v_ArrVal_2051) .cse8) .cse9) 4)))))))))) is different from false [2024-11-08 13:51:44,061 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 13:51:44,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 3947 treesize of output 3817 [2024-11-08 13:51:44,078 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 13:51:44,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2434 treesize of output 2245 [2024-11-08 13:51:44,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-08 13:51:44,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 648 treesize of output 534 [2024-11-08 13:51:45,022 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 13:51:45,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 769 treesize of output 712 [2024-11-08 13:51:59,064 WARN L286 SmtUtils]: Spent 13.96s on a formula simplification that was a NOOP. DAG size: 42 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-08 13:51:59,064 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 13:51:59,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 5666 treesize of output 5438