./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test3-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 05:15:05,085 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 05:15:05,152 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 05:15:05,155 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 05:15:05,156 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 05:15:05,177 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 05:15:05,177 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 05:15:05,178 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 05:15:05,178 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 05:15:05,179 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 05:15:05,180 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 05:15:05,180 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 05:15:05,180 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 05:15:05,180 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 05:15:05,182 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 05:15:05,183 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 05:15:05,183 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 05:15:05,183 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 05:15:05,183 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 05:15:05,183 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 05:15:05,184 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 05:15:05,184 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 05:15:05,184 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 05:15:05,184 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 05:15:05,184 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 05:15:05,185 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 05:15:05,185 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 05:15:05,185 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 05:15:05,185 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 05:15:05,185 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 05:15:05,185 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 05:15:05,186 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 05:15:05,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 05:15:05,186 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 05:15:05,186 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 05:15:05,186 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 05:15:05,186 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 05:15:05,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 05:15:05,186 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 05:15:05,187 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 05:15:05,187 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 05:15:05,188 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 05:15:05,188 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 [2024-11-19 05:15:05,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 05:15:05,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 05:15:05,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 05:15:05,397 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 05:15:05,397 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 05:15:05,398 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test3-2.i [2024-11-19 05:15:06,610 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 05:15:06,834 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 05:15:06,834 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test3-2.i [2024-11-19 05:15:06,850 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea0ca7e8e/654f79242c6c439b8d5773c7cf457c42/FLAG41ba38fa1 [2024-11-19 05:15:06,865 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea0ca7e8e/654f79242c6c439b8d5773c7cf457c42 [2024-11-19 05:15:06,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 05:15:06,868 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 05:15:06,870 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 05:15:06,870 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 05:15:06,874 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 05:15:06,875 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:15:06" (1/1) ... [2024-11-19 05:15:06,876 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ddf57c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:06, skipping insertion in model container [2024-11-19 05:15:06,876 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:15:06" (1/1) ... [2024-11-19 05:15:06,925 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 05:15:07,221 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test3-2.i[33519,33532] [2024-11-19 05:15:07,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 05:15:07,403 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 05:15:07,440 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test3-2.i[33519,33532] [2024-11-19 05:15:07,487 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 05:15:07,523 INFO L204 MainTranslator]: Completed translation [2024-11-19 05:15:07,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:07 WrapperNode [2024-11-19 05:15:07,524 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 05:15:07,525 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 05:15:07,525 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 05:15:07,525 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 05:15:07,533 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:07" (1/1) ... [2024-11-19 05:15:07,560 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:07" (1/1) ... [2024-11-19 05:15:07,616 INFO L138 Inliner]: procedures = 177, calls = 324, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1597 [2024-11-19 05:15:07,617 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 05:15:07,617 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 05:15:07,617 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 05:15:07,618 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 05:15:07,631 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:07" (1/1) ... [2024-11-19 05:15:07,631 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:07" (1/1) ... [2024-11-19 05:15:07,640 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:07" (1/1) ... [2024-11-19 05:15:07,719 INFO L175 MemorySlicer]: Split 302 memory accesses to 3 slices as follows [2, 34, 266]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 62 writes are split as follows [0, 4, 58]. [2024-11-19 05:15:07,719 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:07" (1/1) ... [2024-11-19 05:15:07,720 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:07" (1/1) ... [2024-11-19 05:15:07,749 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:07" (1/1) ... [2024-11-19 05:15:07,762 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:07" (1/1) ... [2024-11-19 05:15:07,769 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:07" (1/1) ... [2024-11-19 05:15:07,778 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:07" (1/1) ... [2024-11-19 05:15:07,791 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 05:15:07,793 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 05:15:07,793 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 05:15:07,793 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 05:15:07,794 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:07" (1/1) ... [2024-11-19 05:15:07,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 05:15:07,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 05:15:07,824 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) [2024-11-19 05:15:07,827 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 [2024-11-19 05:15:07,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 05:15:07,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 05:15:07,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 05:15:07,864 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-19 05:15:07,864 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-19 05:15:07,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 05:15:07,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 05:15:07,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 05:15:07,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-19 05:15:07,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-19 05:15:07,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-19 05:15:07,866 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-19 05:15:07,866 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-19 05:15:07,866 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-19 05:15:07,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 05:15:07,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 05:15:07,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-19 05:15:07,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-19 05:15:07,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-19 05:15:07,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 05:15:07,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-19 05:15:07,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-19 05:15:07,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-19 05:15:07,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 05:15:07,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 05:15:07,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 05:15:07,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 05:15:07,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 05:15:07,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 05:15:08,071 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 05:15:08,074 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 05:15:09,313 INFO L? ?]: Removed 338 outVars from TransFormulas that were not future-live. [2024-11-19 05:15:09,313 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 05:15:09,334 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 05:15:09,337 INFO L316 CfgBuilder]: Removed 72 assume(true) statements. [2024-11-19 05:15:09,337 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:15:09 BoogieIcfgContainer [2024-11-19 05:15:09,337 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 05:15:09,339 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 05:15:09,339 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 05:15:09,341 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 05:15:09,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:15:06" (1/3) ... [2024-11-19 05:15:09,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ebb717f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:15:09, skipping insertion in model container [2024-11-19 05:15:09,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:07" (2/3) ... [2024-11-19 05:15:09,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ebb717f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:15:09, skipping insertion in model container [2024-11-19 05:15:09,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:15:09" (3/3) ... [2024-11-19 05:15:09,343 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_nondet_test3-2.i [2024-11-19 05:15:09,357 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 05:15:09,357 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 05:15:09,419 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 05:15:09,423 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;@77afc859, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 05:15:09,424 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 05:15:09,428 INFO L276 IsEmpty]: Start isEmpty. Operand has 437 states, 428 states have (on average 1.6214953271028036) internal successors, (694), 430 states have internal predecessors, (694), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-19 05:15:09,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-19 05:15:09,433 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:15:09,434 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:15:09,434 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:15:09,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:15:09,438 INFO L85 PathProgramCache]: Analyzing trace with hash 517723227, now seen corresponding path program 1 times [2024-11-19 05:15:09,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:15:09,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380159781] [2024-11-19 05:15:09,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:15:09,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:15:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:15:09,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:15:09,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:15:09,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380159781] [2024-11-19 05:15:09,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380159781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:15:09,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:15:09,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 05:15:09,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909574049] [2024-11-19 05:15:09,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:15:09,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 05:15:09,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:15:09,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 05:15:09,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 05:15:09,630 INFO L87 Difference]: Start difference. First operand has 437 states, 428 states have (on average 1.6214953271028036) internal successors, (694), 430 states have internal predecessors, (694), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 05:15:09,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:15:09,684 INFO L93 Difference]: Finished difference Result 871 states and 1406 transitions. [2024-11-19 05:15:09,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 05:15:09,686 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-19 05:15:09,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:15:09,694 INFO L225 Difference]: With dead ends: 871 [2024-11-19 05:15:09,694 INFO L226 Difference]: Without dead ends: 398 [2024-11-19 05:15:09,698 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 05:15:09,700 INFO L432 NwaCegarLoop]: 627 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 05:15:09,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 05:15:09,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2024-11-19 05:15:09,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2024-11-19 05:15:09,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 390 states have (on average 1.4461538461538461) internal successors, (564), 391 states have internal predecessors, (564), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-19 05:15:09,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 574 transitions. [2024-11-19 05:15:09,748 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 574 transitions. Word has length 12 [2024-11-19 05:15:09,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:15:09,748 INFO L471 AbstractCegarLoop]: Abstraction has 398 states and 574 transitions. [2024-11-19 05:15:09,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 05:15:09,749 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 574 transitions. [2024-11-19 05:15:09,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-19 05:15:09,749 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:15:09,749 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:15:09,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 05:15:09,750 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:15:09,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:15:09,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1025747970, now seen corresponding path program 1 times [2024-11-19 05:15:09,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:15:09,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591621201] [2024-11-19 05:15:09,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:15:09,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:15:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:15:09,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:15:09,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:15:09,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591621201] [2024-11-19 05:15:09,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591621201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:15:09,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:15:09,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 05:15:09,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601414018] [2024-11-19 05:15:09,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:15:09,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 05:15:09,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:15:09,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 05:15:09,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 05:15:09,923 INFO L87 Difference]: Start difference. First operand 398 states and 574 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 05:15:10,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:15:10,203 INFO L93 Difference]: Finished difference Result 1089 states and 1589 transitions. [2024-11-19 05:15:10,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 05:15:10,204 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-19 05:15:10,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:15:10,208 INFO L225 Difference]: With dead ends: 1089 [2024-11-19 05:15:10,208 INFO L226 Difference]: Without dead ends: 692 [2024-11-19 05:15:10,210 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 [2024-11-19 05:15:10,212 INFO L432 NwaCegarLoop]: 563 mSDtfsCounter, 431 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 05:15:10,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 1642 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 05:15:10,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2024-11-19 05:15:10,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 691. [2024-11-19 05:15:10,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 682 states have (on average 1.466275659824047) internal successors, (1000), 684 states have internal predecessors, (1000), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-19 05:15:10,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2024-11-19 05:15:10,244 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 14 [2024-11-19 05:15:10,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:15:10,244 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2024-11-19 05:15:10,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 05:15:10,245 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2024-11-19 05:15:10,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-19 05:15:10,249 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:15:10,249 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:15:10,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 05:15:10,249 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:15:10,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:15:10,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1308050195, now seen corresponding path program 1 times [2024-11-19 05:15:10,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:15:10,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275427447] [2024-11-19 05:15:10,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:15:10,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:15:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:15:10,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:15:10,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:15:10,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275427447] [2024-11-19 05:15:10,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275427447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:15:10,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:15:10,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 05:15:10,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520438179] [2024-11-19 05:15:10,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:15:10,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 05:15:10,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:15:10,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 05:15:10,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 05:15:10,488 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 05:15:10,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:15:10,558 INFO L93 Difference]: Finished difference Result 963 states and 1402 transitions. [2024-11-19 05:15:10,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 05:15:10,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-19 05:15:10,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:15:10,562 INFO L225 Difference]: With dead ends: 963 [2024-11-19 05:15:10,562 INFO L226 Difference]: Without dead ends: 607 [2024-11-19 05:15:10,563 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 [2024-11-19 05:15:10,564 INFO L432 NwaCegarLoop]: 472 mSDtfsCounter, 30 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 05:15:10,565 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1397 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 05:15:10,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2024-11-19 05:15:10,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2024-11-19 05:15:10,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 598 states have (on average 1.414715719063545) internal successors, (846), 600 states have internal predecessors, (846), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-19 05:15:10,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 858 transitions. [2024-11-19 05:15:10,583 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 858 transitions. Word has length 68 [2024-11-19 05:15:10,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:15:10,583 INFO L471 AbstractCegarLoop]: Abstraction has 607 states and 858 transitions. [2024-11-19 05:15:10,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 05:15:10,584 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 858 transitions. [2024-11-19 05:15:10,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-19 05:15:10,587 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:15:10,587 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:15:10,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 05:15:10,588 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:15:10,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:15:10,588 INFO L85 PathProgramCache]: Analyzing trace with hash 753154847, now seen corresponding path program 1 times [2024-11-19 05:15:10,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:15:10,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891640242] [2024-11-19 05:15:10,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:15:10,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:15:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:15:10,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:15:10,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:15:10,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891640242] [2024-11-19 05:15:10,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891640242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:15:10,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:15:10,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 05:15:10,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460296119] [2024-11-19 05:15:10,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:15:10,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 05:15:10,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:15:10,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 05:15:10,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-19 05:15:10,925 INFO L87 Difference]: Start difference. First operand 607 states and 858 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 05:15:11,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:15:11,060 INFO L93 Difference]: Finished difference Result 1122 states and 1555 transitions. [2024-11-19 05:15:11,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 05:15:11,061 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-19 05:15:11,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:15:11,064 INFO L225 Difference]: With dead ends: 1122 [2024-11-19 05:15:11,064 INFO L226 Difference]: Without dead ends: 847 [2024-11-19 05:15:11,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-19 05:15:11,067 INFO L432 NwaCegarLoop]: 521 mSDtfsCounter, 465 mSDsluCounter, 2479 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 3000 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 05:15:11,068 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 3000 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 05:15:11,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2024-11-19 05:15:11,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 606. [2024-11-19 05:15:11,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 597 states have (on average 1.4137353433835846) internal successors, (844), 599 states have internal predecessors, (844), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-19 05:15:11,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 856 transitions. [2024-11-19 05:15:11,084 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 856 transitions. Word has length 68 [2024-11-19 05:15:11,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:15:11,084 INFO L471 AbstractCegarLoop]: Abstraction has 606 states and 856 transitions. [2024-11-19 05:15:11,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 05:15:11,084 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 856 transitions. [2024-11-19 05:15:11,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-19 05:15:11,088 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:15:11,089 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:15:11,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 05:15:11,089 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:15:11,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:15:11,090 INFO L85 PathProgramCache]: Analyzing trace with hash 355503232, now seen corresponding path program 1 times [2024-11-19 05:15:11,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:15:11,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428177480] [2024-11-19 05:15:11,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:15:11,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:15:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:15:11,305 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 05:15:11,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:15:11,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428177480] [2024-11-19 05:15:11,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428177480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:15:11,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:15:11,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 05:15:11,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513028991] [2024-11-19 05:15:11,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:15:11,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 05:15:11,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:15:11,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 05:15:11,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 05:15:11,309 INFO L87 Difference]: Start difference. First operand 606 states and 856 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 05:15:11,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:15:11,375 INFO L93 Difference]: Finished difference Result 1118 states and 1570 transitions. [2024-11-19 05:15:11,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 05:15:11,376 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 105 [2024-11-19 05:15:11,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:15:11,378 INFO L225 Difference]: With dead ends: 1118 [2024-11-19 05:15:11,378 INFO L226 Difference]: Without dead ends: 522 [2024-11-19 05:15:11,380 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 [2024-11-19 05:15:11,382 INFO L432 NwaCegarLoop]: 389 mSDtfsCounter, 30 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 05:15:11,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1148 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 05:15:11,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2024-11-19 05:15:11,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 522. [2024-11-19 05:15:11,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 513 states have (on average 1.345029239766082) internal successors, (690), 515 states have internal predecessors, (690), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-19 05:15:11,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 702 transitions. [2024-11-19 05:15:11,396 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 702 transitions. Word has length 105 [2024-11-19 05:15:11,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:15:11,397 INFO L471 AbstractCegarLoop]: Abstraction has 522 states and 702 transitions. [2024-11-19 05:15:11,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 05:15:11,398 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 702 transitions. [2024-11-19 05:15:11,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-19 05:15:11,399 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:15:11,399 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:15:11,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 05:15:11,400 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:15:11,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:15:11,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1095820404, now seen corresponding path program 1 times [2024-11-19 05:15:11,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:15:11,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482737944] [2024-11-19 05:15:11,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:15:11,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:15:11,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:15:11,599 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 05:15:11,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:15:11,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482737944] [2024-11-19 05:15:11,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482737944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:15:11,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:15:11,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 05:15:11,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176766605] [2024-11-19 05:15:11,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:15:11,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 05:15:11,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:15:11,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 05:15:11,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 05:15:11,601 INFO L87 Difference]: Start difference. First operand 522 states and 702 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 05:15:11,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:15:11,637 INFO L93 Difference]: Finished difference Result 1009 states and 1365 transitions. [2024-11-19 05:15:11,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 05:15:11,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 105 [2024-11-19 05:15:11,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:15:11,640 INFO L225 Difference]: With dead ends: 1009 [2024-11-19 05:15:11,640 INFO L226 Difference]: Without dead ends: 522 [2024-11-19 05:15:11,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 05:15:11,643 INFO L432 NwaCegarLoop]: 402 mSDtfsCounter, 0 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 05:15:11,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 782 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 05:15:11,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2024-11-19 05:15:11,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 522. [2024-11-19 05:15:11,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 513 states have (on average 1.3333333333333333) internal successors, (684), 515 states have internal predecessors, (684), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-19 05:15:11,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 696 transitions. [2024-11-19 05:15:11,654 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 696 transitions. Word has length 105 [2024-11-19 05:15:11,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:15:11,655 INFO L471 AbstractCegarLoop]: Abstraction has 522 states and 696 transitions. [2024-11-19 05:15:11,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 05:15:11,655 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 696 transitions. [2024-11-19 05:15:11,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-19 05:15:11,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:15:11,658 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:15:11,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 05:15:11,658 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:15:11,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:15:11,658 INFO L85 PathProgramCache]: Analyzing trace with hash 815222154, now seen corresponding path program 1 times [2024-11-19 05:15:11,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:15:11,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876138485] [2024-11-19 05:15:11,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:15:11,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:15:11,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:15:12,010 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 05:15:12,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:15:12,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876138485] [2024-11-19 05:15:12,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876138485] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 05:15:12,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519513295] [2024-11-19 05:15:12,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:15:12,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:15:12,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 05:15:12,013 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) [2024-11-19 05:15:12,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 05:15:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:15:12,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-19 05:15:12,295 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 05:15:12,319 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 [2024-11-19 05:15:12,336 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 17 [2024-11-19 05:15:13,052 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 05:15:13,053 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 05:15:13,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519513295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:15:13,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 05:15:13,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4] total 13 [2024-11-19 05:15:13,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822360521] [2024-11-19 05:15:13,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:15:13,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 05:15:13,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:15:13,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 05:15:13,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-19 05:15:13,056 INFO L87 Difference]: Start difference. First operand 522 states and 696 transitions. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 05:15:14,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:15:14,410 INFO L93 Difference]: Finished difference Result 1242 states and 1672 transitions. [2024-11-19 05:15:14,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 05:15:14,411 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 105 [2024-11-19 05:15:14,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:15:14,413 INFO L225 Difference]: With dead ends: 1242 [2024-11-19 05:15:14,413 INFO L226 Difference]: Without dead ends: 765 [2024-11-19 05:15:14,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2024-11-19 05:15:14,415 INFO L432 NwaCegarLoop]: 386 mSDtfsCounter, 497 mSDsluCounter, 1914 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 2300 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-19 05:15:14,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 2300 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-19 05:15:14,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2024-11-19 05:15:14,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 522. [2024-11-19 05:15:14,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 513 states have (on average 1.331384015594542) internal successors, (683), 515 states have internal predecessors, (683), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-19 05:15:14,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 695 transitions. [2024-11-19 05:15:14,427 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 695 transitions. Word has length 105 [2024-11-19 05:15:14,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:15:14,427 INFO L471 AbstractCegarLoop]: Abstraction has 522 states and 695 transitions. [2024-11-19 05:15:14,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 05:15:14,427 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 695 transitions. [2024-11-19 05:15:14,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-19 05:15:14,428 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:15:14,428 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:15:14,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 05:15:14,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:15:14,629 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:15:14,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:15:14,630 INFO L85 PathProgramCache]: Analyzing trace with hash -500572081, now seen corresponding path program 1 times [2024-11-19 05:15:14,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:15:14,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69939493] [2024-11-19 05:15:14,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:15:14,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:15:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:15:14,924 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 05:15:14,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:15:14,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69939493] [2024-11-19 05:15:14,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69939493] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 05:15:14,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107094173] [2024-11-19 05:15:14,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:15:14,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:15:14,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 05:15:14,927 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) [2024-11-19 05:15:14,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 05:15:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:15:15,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 05:15:15,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 05:15:15,339 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 [2024-11-19 05:15:15,359 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 05:15:15,360 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 05:15:15,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107094173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:15:15,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 05:15:15,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-19 05:15:15,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275406208] [2024-11-19 05:15:15,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:15:15,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 05:15:15,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:15:15,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 05:15:15,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 05:15:15,361 INFO L87 Difference]: Start difference. First operand 522 states and 695 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 05:15:15,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:15:15,454 INFO L93 Difference]: Finished difference Result 707 states and 945 transitions. [2024-11-19 05:15:15,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 05:15:15,456 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 106 [2024-11-19 05:15:15,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:15:15,458 INFO L225 Difference]: With dead ends: 707 [2024-11-19 05:15:15,458 INFO L226 Difference]: Without dead ends: 696 [2024-11-19 05:15:15,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-19 05:15:15,459 INFO L432 NwaCegarLoop]: 399 mSDtfsCounter, 483 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 05:15:15,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 1177 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 05:15:15,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2024-11-19 05:15:15,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 524. [2024-11-19 05:15:15,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 515 states have (on average 1.3300970873786409) internal successors, (685), 517 states have internal predecessors, (685), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-19 05:15:15,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 697 transitions. [2024-11-19 05:15:15,473 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 697 transitions. Word has length 106 [2024-11-19 05:15:15,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:15:15,474 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 697 transitions. [2024-11-19 05:15:15,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 05:15:15,474 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 697 transitions. [2024-11-19 05:15:15,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-19 05:15:15,476 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:15:15,476 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:15:15,490 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 05:15:15,676 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,SelfDestructingSolverStorable7 [2024-11-19 05:15:15,677 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:15:15,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:15:15,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1592192084, now seen corresponding path program 1 times [2024-11-19 05:15:15,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:15:15,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700742294] [2024-11-19 05:15:15,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:15:15,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:15:15,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:15:15,862 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 05:15:15,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:15:15,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700742294] [2024-11-19 05:15:15,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700742294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:15:15,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:15:15,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 05:15:15,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425894220] [2024-11-19 05:15:15,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:15:15,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 05:15:15,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:15:15,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 05:15:15,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 05:15:15,864 INFO L87 Difference]: Start difference. First operand 524 states and 697 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 05:15:16,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:15:16,154 INFO L93 Difference]: Finished difference Result 1306 states and 1752 transitions. [2024-11-19 05:15:16,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 05:15:16,155 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 160 [2024-11-19 05:15:16,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:15:16,159 INFO L225 Difference]: With dead ends: 1306 [2024-11-19 05:15:16,159 INFO L226 Difference]: Without dead ends: 874 [2024-11-19 05:15:16,160 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-19 05:15:16,160 INFO L432 NwaCegarLoop]: 505 mSDtfsCounter, 910 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 1437 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 05:15:16,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 1437 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 05:15:16,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2024-11-19 05:15:16,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 664. [2024-11-19 05:15:16,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 654 states have (on average 1.3363914373088686) internal successors, (874), 657 states have internal predecessors, (874), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 05:15:16,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 888 transitions. [2024-11-19 05:15:16,181 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 888 transitions. Word has length 160 [2024-11-19 05:15:16,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:15:16,182 INFO L471 AbstractCegarLoop]: Abstraction has 664 states and 888 transitions. [2024-11-19 05:15:16,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 05:15:16,182 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 888 transitions. [2024-11-19 05:15:16,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-19 05:15:16,183 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:15:16,183 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:15:16,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 05:15:16,184 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:15:16,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:15:16,184 INFO L85 PathProgramCache]: Analyzing trace with hash 404449816, now seen corresponding path program 1 times [2024-11-19 05:15:16,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:15:16,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522516393] [2024-11-19 05:15:16,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:15:16,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:15:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:15:16,510 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 05:15:16,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:15:16,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522516393] [2024-11-19 05:15:16,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522516393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 05:15:16,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978691670] [2024-11-19 05:15:16,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:15:16,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:15:16,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 05:15:16,513 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) [2024-11-19 05:15:16,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 05:15:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:15:16,836 INFO L255 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-19 05:15:16,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 05:15:16,856 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 [2024-11-19 05:15:17,311 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 05:15:17,312 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 05:15:17,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978691670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:15:17,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 05:15:17,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2024-11-19 05:15:17,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130168895] [2024-11-19 05:15:17,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:15:17,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 05:15:17,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:15:17,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 05:15:17,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-19 05:15:17,314 INFO L87 Difference]: Start difference. First operand 664 states and 888 transitions. Second operand has 10 states, 10 states have (on average 16.1) internal successors, (161), 10 states have internal predecessors, (161), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 05:15:17,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:15:17,833 INFO L93 Difference]: Finished difference Result 1308 states and 1755 transitions. [2024-11-19 05:15:17,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 05:15:17,834 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.1) internal successors, (161), 10 states have internal predecessors, (161), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 170 [2024-11-19 05:15:17,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:15:17,837 INFO L225 Difference]: With dead ends: 1308 [2024-11-19 05:15:17,837 INFO L226 Difference]: Without dead ends: 896 [2024-11-19 05:15:17,838 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-11-19 05:15:17,838 INFO L432 NwaCegarLoop]: 450 mSDtfsCounter, 396 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 05:15:17,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 1982 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 05:15:17,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2024-11-19 05:15:17,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 699. [2024-11-19 05:15:17,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 689 states have (on average 1.3251088534107403) internal successors, (913), 692 states have internal predecessors, (913), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 05:15:17,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 927 transitions. [2024-11-19 05:15:17,858 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 927 transitions. Word has length 170 [2024-11-19 05:15:17,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:15:17,858 INFO L471 AbstractCegarLoop]: Abstraction has 699 states and 927 transitions. [2024-11-19 05:15:17,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.1) internal successors, (161), 10 states have internal predecessors, (161), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 05:15:17,858 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 927 transitions. [2024-11-19 05:15:17,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-19 05:15:17,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:15:17,859 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:15:17,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 05:15:18,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:15:18,064 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:15:18,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:15:18,065 INFO L85 PathProgramCache]: Analyzing trace with hash 105131120, now seen corresponding path program 1 times [2024-11-19 05:15:18,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:15:18,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942912585] [2024-11-19 05:15:18,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:15:18,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:15:18,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:15:18,361 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 05:15:18,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:15:18,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942912585] [2024-11-19 05:15:18,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942912585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 05:15:18,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104554573] [2024-11-19 05:15:18,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:15:18,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:15:18,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 05:15:18,363 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) [2024-11-19 05:15:18,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 05:15:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:15:18,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-19 05:15:18,841 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 05:15:18,882 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 05:15:18,882 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 05:15:18,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104554573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:15:18,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 05:15:18,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 05:15:18,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702072589] [2024-11-19 05:15:18,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:15:18,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 05:15:18,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:15:18,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 05:15:18,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 05:15:18,885 INFO L87 Difference]: Start difference. First operand 699 states and 927 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 05:15:18,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:15:18,996 INFO L93 Difference]: Finished difference Result 1353 states and 1806 transitions. [2024-11-19 05:15:18,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 05:15:18,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 171 [2024-11-19 05:15:18,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:15:18,999 INFO L225 Difference]: With dead ends: 1353 [2024-11-19 05:15:19,000 INFO L226 Difference]: Without dead ends: 699 [2024-11-19 05:15:19,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 05:15:19,001 INFO L432 NwaCegarLoop]: 398 mSDtfsCounter, 17 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 05:15:19,001 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1065 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 05:15:19,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2024-11-19 05:15:19,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 699. [2024-11-19 05:15:19,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 689 states have (on average 1.3222060957910013) internal successors, (911), 692 states have internal predecessors, (911), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 05:15:19,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 925 transitions. [2024-11-19 05:15:19,022 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 925 transitions. Word has length 171 [2024-11-19 05:15:19,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:15:19,022 INFO L471 AbstractCegarLoop]: Abstraction has 699 states and 925 transitions. [2024-11-19 05:15:19,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 05:15:19,023 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 925 transitions. [2024-11-19 05:15:19,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-19 05:15:19,024 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:15:19,024 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:15:19,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 05:15:19,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:15:19,225 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:15:19,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:15:19,225 INFO L85 PathProgramCache]: Analyzing trace with hash -800828870, now seen corresponding path program 1 times [2024-11-19 05:15:19,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:15:19,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976016572] [2024-11-19 05:15:19,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:15:19,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:15:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:15:19,482 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 05:15:19,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:15:19,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976016572] [2024-11-19 05:15:19,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976016572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:15:19,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:15:19,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 05:15:19,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879908953] [2024-11-19 05:15:19,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:15:19,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 05:15:19,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:15:19,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 05:15:19,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 05:15:19,485 INFO L87 Difference]: Start difference. First operand 699 states and 925 transitions. Second operand has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 05:15:19,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:15:19,694 INFO L93 Difference]: Finished difference Result 1356 states and 1808 transitions. [2024-11-19 05:15:19,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 05:15:19,695 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 172 [2024-11-19 05:15:19,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:15:19,698 INFO L225 Difference]: With dead ends: 1356 [2024-11-19 05:15:19,698 INFO L226 Difference]: Without dead ends: 705 [2024-11-19 05:15:19,698 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 05:15:19,699 INFO L432 NwaCegarLoop]: 397 mSDtfsCounter, 8 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1689 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 05:15:19,699 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1689 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 05:15:19,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2024-11-19 05:15:19,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 705. [2024-11-19 05:15:19,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 695 states have (on average 1.3194244604316547) internal successors, (917), 698 states have internal predecessors, (917), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 05:15:19,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 931 transitions. [2024-11-19 05:15:19,719 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 931 transitions. Word has length 172 [2024-11-19 05:15:19,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:15:19,719 INFO L471 AbstractCegarLoop]: Abstraction has 705 states and 931 transitions. [2024-11-19 05:15:19,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 05:15:19,719 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 931 transitions. [2024-11-19 05:15:19,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-19 05:15:19,720 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:15:19,721 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:15:19,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 05:15:19,721 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:15:19,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:15:19,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1123742935, now seen corresponding path program 1 times [2024-11-19 05:15:19,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:15:19,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954089071] [2024-11-19 05:15:19,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:15:19,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:15:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:15:20,016 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 05:15:20,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:15:20,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954089071] [2024-11-19 05:15:20,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954089071] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:15:20,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:15:20,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 05:15:20,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073321431] [2024-11-19 05:15:20,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:15:20,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 05:15:20,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:15:20,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 05:15:20,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 05:15:20,018 INFO L87 Difference]: Start difference. First operand 705 states and 931 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 05:15:20,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:15:20,263 INFO L93 Difference]: Finished difference Result 1362 states and 1812 transitions. [2024-11-19 05:15:20,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 05:15:20,264 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 173 [2024-11-19 05:15:20,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:15:20,266 INFO L225 Difference]: With dead ends: 1362 [2024-11-19 05:15:20,266 INFO L226 Difference]: Without dead ends: 715 [2024-11-19 05:15:20,267 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 05:15:20,268 INFO L432 NwaCegarLoop]: 387 mSDtfsCounter, 12 mSDsluCounter, 1615 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 05:15:20,268 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2002 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 05:15:20,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2024-11-19 05:15:20,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 713. [2024-11-19 05:15:20,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 703 states have (on average 1.3186344238975818) internal successors, (927), 706 states have internal predecessors, (927), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 05:15:20,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 941 transitions. [2024-11-19 05:15:20,287 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 941 transitions. Word has length 173 [2024-11-19 05:15:20,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:15:20,287 INFO L471 AbstractCegarLoop]: Abstraction has 713 states and 941 transitions. [2024-11-19 05:15:20,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 05:15:20,288 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 941 transitions. [2024-11-19 05:15:20,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-19 05:15:20,289 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:15:20,289 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:15:20,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 05:15:20,289 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:15:20,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:15:20,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1130129267, now seen corresponding path program 1 times [2024-11-19 05:15:20,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:15:20,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534781395] [2024-11-19 05:15:20,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:15:20,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:15:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:15:20,641 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 05:15:20,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:15:20,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534781395] [2024-11-19 05:15:20,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534781395] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 05:15:20,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201821351] [2024-11-19 05:15:20,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:15:20,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:15:20,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 05:15:20,644 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) [2024-11-19 05:15:20,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 05:15:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:15:20,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 05:15:20,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 05:15:21,049 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 05:15:21,049 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 05:15:21,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201821351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:15:21,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 05:15:21,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2024-11-19 05:15:21,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132838966] [2024-11-19 05:15:21,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:15:21,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 05:15:21,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:15:21,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 05:15:21,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 05:15:21,052 INFO L87 Difference]: Start difference. First operand 713 states and 941 transitions. Second operand has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 05:15:21,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:15:21,239 INFO L93 Difference]: Finished difference Result 1125 states and 1501 transitions. [2024-11-19 05:15:21,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 05:15:21,239 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 173 [2024-11-19 05:15:21,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:15:21,242 INFO L225 Difference]: With dead ends: 1125 [2024-11-19 05:15:21,242 INFO L226 Difference]: Without dead ends: 713 [2024-11-19 05:15:21,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 05:15:21,243 INFO L432 NwaCegarLoop]: 388 mSDtfsCounter, 34 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 05:15:21,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1682 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 05:15:21,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2024-11-19 05:15:21,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2024-11-19 05:15:21,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 703 states have (on average 1.3143669985775248) internal successors, (924), 706 states have internal predecessors, (924), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 05:15:21,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 938 transitions. [2024-11-19 05:15:21,265 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 938 transitions. Word has length 173 [2024-11-19 05:15:21,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:15:21,265 INFO L471 AbstractCegarLoop]: Abstraction has 713 states and 938 transitions. [2024-11-19 05:15:21,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 05:15:21,266 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 938 transitions. [2024-11-19 05:15:21,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-19 05:15:21,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:15:21,267 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:15:21,283 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 05:15:21,468 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,SelfDestructingSolverStorable13 [2024-11-19 05:15:21,468 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:15:21,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:15:21,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1746723856, now seen corresponding path program 1 times [2024-11-19 05:15:21,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:15:21,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34211168] [2024-11-19 05:15:21,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:15:21,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:15:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:15:21,756 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 05:15:21,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:15:21,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34211168] [2024-11-19 05:15:21,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34211168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:15:21,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:15:21,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 05:15:21,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373092332] [2024-11-19 05:15:21,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:15:21,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 05:15:21,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:15:21,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 05:15:21,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 05:15:21,758 INFO L87 Difference]: Start difference. First operand 713 states and 938 transitions. Second operand has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 05:15:21,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:15:21,931 INFO L93 Difference]: Finished difference Result 1134 states and 1510 transitions. [2024-11-19 05:15:21,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 05:15:21,932 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 174 [2024-11-19 05:15:21,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:15:21,934 INFO L225 Difference]: With dead ends: 1134 [2024-11-19 05:15:21,934 INFO L226 Difference]: Without dead ends: 722 [2024-11-19 05:15:21,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 05:15:21,935 INFO L432 NwaCegarLoop]: 396 mSDtfsCounter, 8 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 05:15:21,935 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1383 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 05:15:21,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2024-11-19 05:15:21,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 722. [2024-11-19 05:15:21,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 712 states have (on average 1.3103932584269662) internal successors, (933), 715 states have internal predecessors, (933), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 05:15:21,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 947 transitions. [2024-11-19 05:15:21,956 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 947 transitions. Word has length 174 [2024-11-19 05:15:21,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:15:21,957 INFO L471 AbstractCegarLoop]: Abstraction has 722 states and 947 transitions. [2024-11-19 05:15:21,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 05:15:21,957 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 947 transitions. [2024-11-19 05:15:21,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-19 05:15:21,958 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:15:21,958 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:15:21,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 05:15:21,959 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:15:21,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:15:21,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1466322292, now seen corresponding path program 1 times [2024-11-19 05:15:21,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:15:21,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338279733] [2024-11-19 05:15:21,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:15:21,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:15:22,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:15:22,244 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 05:15:22,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:15:22,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338279733] [2024-11-19 05:15:22,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338279733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:15:22,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:15:22,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 05:15:22,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72356968] [2024-11-19 05:15:22,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:15:22,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 05:15:22,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:15:22,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 05:15:22,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 05:15:22,247 INFO L87 Difference]: Start difference. First operand 722 states and 947 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 05:15:22,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:15:22,504 INFO L93 Difference]: Finished difference Result 1158 states and 1537 transitions. [2024-11-19 05:15:22,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 05:15:22,504 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 175 [2024-11-19 05:15:22,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:15:22,507 INFO L225 Difference]: With dead ends: 1158 [2024-11-19 05:15:22,507 INFO L226 Difference]: Without dead ends: 737 [2024-11-19 05:15:22,508 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 05:15:22,508 INFO L432 NwaCegarLoop]: 386 mSDtfsCounter, 12 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1996 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 05:15:22,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1996 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 05:15:22,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2024-11-19 05:15:22,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 734. [2024-11-19 05:15:22,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 724 states have (on average 1.3093922651933703) internal successors, (948), 727 states have internal predecessors, (948), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-19 05:15:22,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 962 transitions. [2024-11-19 05:15:22,531 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 962 transitions. Word has length 175 [2024-11-19 05:15:22,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:15:22,531 INFO L471 AbstractCegarLoop]: Abstraction has 734 states and 962 transitions. [2024-11-19 05:15:22,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 05:15:22,531 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 962 transitions. [2024-11-19 05:15:22,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-19 05:15:22,532 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:15:22,533 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:15:22,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 05:15:22,533 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:15:22,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:15:22,533 INFO L85 PathProgramCache]: Analyzing trace with hash -241460624, now seen corresponding path program 1 times [2024-11-19 05:15:22,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:15:22,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496650017] [2024-11-19 05:15:22,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:15:22,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:15:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:15:22,783 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 05:15:22,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:15:22,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496650017] [2024-11-19 05:15:22,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496650017] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 05:15:22,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838354984] [2024-11-19 05:15:22,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:15:22,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:15:22,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 05:15:22,786 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) [2024-11-19 05:15:22,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 05:15:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:15:23,314 INFO L255 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 05:15:23,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 05:15:23,329 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:15:23,329 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 05:15:23,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838354984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:15:23,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 05:15:23,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-11-19 05:15:23,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986021170] [2024-11-19 05:15:23,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:15:23,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 05:15:23,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:15:23,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 05:15:23,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 05:15:23,331 INFO L87 Difference]: Start difference. First operand 734 states and 962 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 05:15:23,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 05:15:23,359 INFO L93 Difference]: Finished difference Result 1369 states and 1800 transitions. [2024-11-19 05:15:23,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 05:15:23,360 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 175 [2024-11-19 05:15:23,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 05:15:23,363 INFO L225 Difference]: With dead ends: 1369 [2024-11-19 05:15:23,363 INFO L226 Difference]: Without dead ends: 737 [2024-11-19 05:15:23,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 05:15:23,365 INFO L432 NwaCegarLoop]: 403 mSDtfsCounter, 0 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 05:15:23,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1205 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 05:15:23,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2024-11-19 05:15:23,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 737. [2024-11-19 05:15:23,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 726 states have (on average 1.3099173553719008) internal successors, (951), 730 states have internal predecessors, (951), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-19 05:15:23,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 966 transitions. [2024-11-19 05:15:23,383 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 966 transitions. Word has length 175 [2024-11-19 05:15:23,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 05:15:23,383 INFO L471 AbstractCegarLoop]: Abstraction has 737 states and 966 transitions. [2024-11-19 05:15:23,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-19 05:15:23,383 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 966 transitions. [2024-11-19 05:15:23,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-19 05:15:23,385 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 05:15:23,385 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:15:23,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-19 05:15:23,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 05:15:23,587 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 05:15:23,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:15:23,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1808455278, now seen corresponding path program 1 times [2024-11-19 05:15:23,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:15:23,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748599853] [2024-11-19 05:15:23,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:15:23,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:15:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:15:23,946 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 05:15:23,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:15:23,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748599853] [2024-11-19 05:15:23,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748599853] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 05:15:23,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630835268] [2024-11-19 05:15:23,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:15:23,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 05:15:23,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 05:15:23,949 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) [2024-11-19 05:15:23,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 05:15:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:15:24,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-11-19 05:15:24,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 05:15:24,403 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 6 treesize of output 5 [2024-11-19 05:15:24,549 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 [2024-11-19 05:15:24,567 INFO L349 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2024-11-19 05:15:24,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 25 treesize of output 29 [2024-11-19 05:15:24,575 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 15 treesize of output 1 [2024-11-19 05:15:24,617 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 18 treesize of output 10 [2024-11-19 05:15:24,705 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-19 05:15:24,706 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-19 05:15:24,712 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 16 treesize of output 1 [2024-11-19 05:15:30,898 INFO L224 Elim1Store]: Index analysis took 295 ms