./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_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-dev-4a390ef-m [2024-10-24 14:46:51,897 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 14:46:51,970 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 14:46:51,974 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 14:46:51,975 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 14:46:51,999 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 14:46:51,999 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 14:46:52,000 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 14:46:52,001 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 14:46:52,001 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 14:46:52,001 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 14:46:52,002 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 14:46:52,002 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 14:46:52,003 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 14:46:52,003 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 14:46:52,004 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 14:46:52,005 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 14:46:52,007 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 14:46:52,007 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 14:46:52,007 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 14:46:52,008 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 14:46:52,008 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 14:46:52,012 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 14:46:52,012 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 14:46:52,013 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 14:46:52,013 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 14:46:52,013 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 14:46:52,013 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 14:46:52,014 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 14:46:52,014 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 14:46:52,014 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 14:46:52,014 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 14:46:52,015 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:46:52,015 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 14:46:52,015 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 14:46:52,016 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 14:46:52,017 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 14:46:52,017 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 14:46:52,018 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 14:46:52,018 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 14:46:52,018 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 14:46:52,019 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 14:46:52,019 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 [2024-10-24 14:46:52,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 14:46:52,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 14:46:52,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 14:46:52,283 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 14:46:52,283 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 14:46:52,284 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test3-2.i [2024-10-24 14:46:53,752 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 14:46:54,052 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 14:46:54,054 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test3-2.i [2024-10-24 14:46:54,075 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42b1cc568/e4efe7acad6f48b8abbb4972c8457d78/FLAG70a31fded [2024-10-24 14:46:54,337 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42b1cc568/e4efe7acad6f48b8abbb4972c8457d78 [2024-10-24 14:46:54,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 14:46:54,341 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 14:46:54,342 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 14:46:54,342 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 14:46:54,348 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 14:46:54,349 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:46:54" (1/1) ... [2024-10-24 14:46:54,352 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f281fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:54, skipping insertion in model container [2024-10-24 14:46:54,352 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:46:54" (1/1) ... [2024-10-24 14:46:54,411 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 14:46:54,754 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test3-2.i[33519,33532] [2024-10-24 14:46:54,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:46:54,916 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 14:46:54,971 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test3-2.i[33519,33532] [2024-10-24 14:46:55,030 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 14:46:55,084 INFO L204 MainTranslator]: Completed translation [2024-10-24 14:46:55,085 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:55 WrapperNode [2024-10-24 14:46:55,085 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 14:46:55,086 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 14:46:55,086 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 14:46:55,086 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 14:46:55,093 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:55" (1/1) ... [2024-10-24 14:46:55,121 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:55" (1/1) ... [2024-10-24 14:46:55,199 INFO L138 Inliner]: procedures = 177, calls = 324, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1597 [2024-10-24 14:46:55,199 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 14:46:55,201 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 14:46:55,201 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 14:46:55,201 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 14:46:55,212 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:55" (1/1) ... [2024-10-24 14:46:55,212 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:55" (1/1) ... [2024-10-24 14:46:55,229 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:55" (1/1) ... [2024-10-24 14:46:55,326 INFO L175 MemorySlicer]: Split 302 memory accesses to 3 slices as follows [34, 2, 266]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2, 0]. The 62 writes are split as follows [4, 0, 58]. [2024-10-24 14:46:55,327 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:55" (1/1) ... [2024-10-24 14:46:55,327 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:55" (1/1) ... [2024-10-24 14:46:55,375 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:55" (1/1) ... [2024-10-24 14:46:55,393 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:55" (1/1) ... [2024-10-24 14:46:55,405 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:55" (1/1) ... [2024-10-24 14:46:55,416 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:55" (1/1) ... [2024-10-24 14:46:55,430 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 14:46:55,431 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 14:46:55,432 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 14:46:55,432 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 14:46:55,433 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:55" (1/1) ... [2024-10-24 14:46:55,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 14:46:55,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:46:55,467 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 14:46:55,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 14:46:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 14:46:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 14:46:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 14:46:55,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 14:46:55,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 14:46:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 14:46:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 14:46:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 14:46:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-24 14:46:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-24 14:46:55,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-10-24 14:46:55,521 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-24 14:46:55,521 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-24 14:46:55,522 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-10-24 14:46:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 14:46:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 14:46:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 14:46:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 14:46:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-24 14:46:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 14:46:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-24 14:46:55,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-24 14:46:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-24 14:46:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 14:46:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 14:46:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 14:46:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 14:46:55,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 14:46:55,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 14:46:55,779 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 14:46:55,782 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 14:46:57,263 INFO L? ?]: Removed 338 outVars from TransFormulas that were not future-live. [2024-10-24 14:46:57,263 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 14:46:57,314 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 14:46:57,317 INFO L314 CfgBuilder]: Removed 72 assume(true) statements. [2024-10-24 14:46:57,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:46:57 BoogieIcfgContainer [2024-10-24 14:46:57,318 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 14:46:57,319 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 14:46:57,319 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 14:46:57,322 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 14:46:57,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:46:54" (1/3) ... [2024-10-24 14:46:57,323 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df920ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:46:57, skipping insertion in model container [2024-10-24 14:46:57,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:46:55" (2/3) ... [2024-10-24 14:46:57,324 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df920ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:46:57, skipping insertion in model container [2024-10-24 14:46:57,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:46:57" (3/3) ... [2024-10-24 14:46:57,325 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_nondet_test3-2.i [2024-10-24 14:46:57,340 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 14:46:57,341 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 14:46:57,420 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 14:46:57,426 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;@38f9e4fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 14:46:57,426 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-24 14:46:57,432 INFO L276 IsEmpty]: Start isEmpty. Operand has 432 states, 423 states have (on average 1.6288416075650118) internal successors, (689), 425 states have internal predecessors, (689), 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) [2024-10-24 14:46:57,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-24 14:46:57,438 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:46:57,438 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:46:57,438 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:46:57,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:46:57,442 INFO L85 PathProgramCache]: Analyzing trace with hash 211480852, now seen corresponding path program 1 times [2024-10-24 14:46:57,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:46:57,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867678808] [2024-10-24 14:46:57,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:46:57,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:46:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:46:57,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:46:57,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:46:57,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867678808] [2024-10-24 14:46:57,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867678808] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:46:57,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:46:57,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 14:46:57,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596592450] [2024-10-24 14:46:57,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:46:57,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 14:46:57,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:46:57,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 14:46:57,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 14:46:57,656 INFO L87 Difference]: Start difference. First operand has 432 states, 423 states have (on average 1.6288416075650118) internal successors, (689), 425 states have internal predecessors, (689), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:46:57,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:46:57,746 INFO L93 Difference]: Finished difference Result 862 states and 1397 transitions. [2024-10-24 14:46:57,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 14:46:57,749 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 11 [2024-10-24 14:46:57,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:46:57,769 INFO L225 Difference]: With dead ends: 862 [2024-10-24 14:46:57,770 INFO L226 Difference]: Without dead ends: 395 [2024-10-24 14:46:57,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 14:46:57,779 INFO L432 NwaCegarLoop]: 617 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-24 14:46:57,781 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 617 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-24 14:46:57,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-10-24 14:46:57,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2024-10-24 14:46:57,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 387 states have (on average 1.449612403100775) internal successors, (561), 388 states have internal predecessors, (561), 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) [2024-10-24 14:46:57,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 571 transitions. [2024-10-24 14:46:57,844 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 571 transitions. Word has length 11 [2024-10-24 14:46:57,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:46:57,844 INFO L471 AbstractCegarLoop]: Abstraction has 395 states and 571 transitions. [2024-10-24 14:46:57,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:46:57,845 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 571 transitions. [2024-10-24 14:46:57,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-24 14:46:57,845 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:46:57,845 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 14:46:57,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 14:46:57,846 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:46:57,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:46:57,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1215398277, now seen corresponding path program 1 times [2024-10-24 14:46:57,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:46:57,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767953418] [2024-10-24 14:46:57,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:46:57,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:46:57,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:46:58,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:46:58,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:46:58,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767953418] [2024-10-24 14:46:58,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767953418] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:46:58,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:46:58,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 14:46:58,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622522588] [2024-10-24 14:46:58,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:46:58,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:46:58,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:46:58,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:46:58,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:46:58,080 INFO L87 Difference]: Start difference. First operand 395 states and 571 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:46:58,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:46:58,378 INFO L93 Difference]: Finished difference Result 1084 states and 1584 transitions. [2024-10-24 14:46:58,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:46:58,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-10-24 14:46:58,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:46:58,384 INFO L225 Difference]: With dead ends: 1084 [2024-10-24 14:46:58,384 INFO L226 Difference]: Without dead ends: 689 [2024-10-24 14:46:58,385 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:46:58,386 INFO L432 NwaCegarLoop]: 557 mSDtfsCounter, 431 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 14:46:58,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 1627 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 14:46:58,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2024-10-24 14:46:58,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 688. [2024-10-24 14:46:58,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 679 states have (on average 1.4683357879234167) internal successors, (997), 681 states have internal predecessors, (997), 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) [2024-10-24 14:46:58,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1009 transitions. [2024-10-24 14:46:58,440 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1009 transitions. Word has length 13 [2024-10-24 14:46:58,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:46:58,440 INFO L471 AbstractCegarLoop]: Abstraction has 688 states and 1009 transitions. [2024-10-24 14:46:58,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:46:58,440 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1009 transitions. [2024-10-24 14:46:58,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-24 14:46:58,444 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:46:58,445 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] [2024-10-24 14:46:58,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 14:46:58,446 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:46:58,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:46:58,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1269620940, now seen corresponding path program 1 times [2024-10-24 14:46:58,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:46:58,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031526549] [2024-10-24 14:46:58,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:46:58,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:46:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:46:58,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:46:58,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:46:58,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031526549] [2024-10-24 14:46:58,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031526549] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:46:58,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:46:58,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:46:58,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45560295] [2024-10-24 14:46:58,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:46:58,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:46:58,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:46:58,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:46:58,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:46:58,692 INFO L87 Difference]: Start difference. First operand 688 states and 1009 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:46:58,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:46:58,788 INFO L93 Difference]: Finished difference Result 959 states and 1398 transitions. [2024-10-24 14:46:58,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 14:46:58,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 67 [2024-10-24 14:46:58,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:46:58,792 INFO L225 Difference]: With dead ends: 959 [2024-10-24 14:46:58,792 INFO L226 Difference]: Without dead ends: 604 [2024-10-24 14:46:58,793 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 [2024-10-24 14:46:58,794 INFO L432 NwaCegarLoop]: 466 mSDtfsCounter, 30 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:46:58,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1381 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:46:58,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2024-10-24 14:46:58,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2024-10-24 14:46:58,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 595 states have (on average 1.4168067226890757) internal successors, (843), 597 states have internal predecessors, (843), 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) [2024-10-24 14:46:58,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 855 transitions. [2024-10-24 14:46:58,812 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 855 transitions. Word has length 67 [2024-10-24 14:46:58,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:46:58,813 INFO L471 AbstractCegarLoop]: Abstraction has 604 states and 855 transitions. [2024-10-24 14:46:58,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:46:58,813 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 855 transitions. [2024-10-24 14:46:58,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-24 14:46:58,833 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:46:58,833 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] [2024-10-24 14:46:58,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 14:46:58,834 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:46:58,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:46:58,834 INFO L85 PathProgramCache]: Analyzing trace with hash 714725592, now seen corresponding path program 1 times [2024-10-24 14:46:58,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:46:58,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618895263] [2024-10-24 14:46:58,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:46:58,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:46:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:46:59,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 14:46:59,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:46:59,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618895263] [2024-10-24 14:46:59,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618895263] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:46:59,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:46:59,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 14:46:59,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447562009] [2024-10-24 14:46:59,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:46:59,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:46:59,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:46:59,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:46:59,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:46:59,365 INFO L87 Difference]: Start difference. First operand 604 states and 855 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:46:59,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:46:59,553 INFO L93 Difference]: Finished difference Result 1117 states and 1550 transitions. [2024-10-24 14:46:59,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:46:59,554 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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 67 [2024-10-24 14:46:59,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:46:59,559 INFO L225 Difference]: With dead ends: 1117 [2024-10-24 14:46:59,559 INFO L226 Difference]: Without dead ends: 843 [2024-10-24 14:46:59,562 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-24 14:46:59,563 INFO L432 NwaCegarLoop]: 515 mSDtfsCounter, 462 mSDsluCounter, 1998 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 2513 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:46:59,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 2513 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:46:59,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2024-10-24 14:46:59,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 603. [2024-10-24 14:46:59,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 594 states have (on average 1.4158249158249159) internal successors, (841), 596 states have internal predecessors, (841), 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) [2024-10-24 14:46:59,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 853 transitions. [2024-10-24 14:46:59,588 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 853 transitions. Word has length 67 [2024-10-24 14:46:59,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:46:59,589 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 853 transitions. [2024-10-24 14:46:59,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 14:46:59,589 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 853 transitions. [2024-10-24 14:46:59,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-10-24 14:46:59,591 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:46:59,591 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:46:59,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 14:46:59,594 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:46:59,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:46:59,594 INFO L85 PathProgramCache]: Analyzing trace with hash -277536393, now seen corresponding path program 1 times [2024-10-24 14:46:59,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:46:59,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639440565] [2024-10-24 14:46:59,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:46:59,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:46:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:46:59,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:46:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:46:59,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:46:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:46:59,810 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:46:59,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:46:59,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639440565] [2024-10-24 14:46:59,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639440565] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:46:59,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:46:59,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 14:46:59,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861105044] [2024-10-24 14:46:59,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:46:59,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 14:46:59,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:46:59,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 14:46:59,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-24 14:46:59,816 INFO L87 Difference]: Start difference. First operand 603 states and 853 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 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) [2024-10-24 14:47:00,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:47:00,108 INFO L93 Difference]: Finished difference Result 1154 states and 1628 transitions. [2024-10-24 14:47:00,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 14:47:00,108 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 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 102 [2024-10-24 14:47:00,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:47:00,113 INFO L225 Difference]: With dead ends: 1154 [2024-10-24 14:47:00,113 INFO L226 Difference]: Without dead ends: 611 [2024-10-24 14:47:00,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 14:47:00,115 INFO L432 NwaCegarLoop]: 451 mSDtfsCounter, 112 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:47:00,115 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 1633 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:47:00,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2024-10-24 14:47:00,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 603. [2024-10-24 14:47:00,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 594 states have (on average 1.3922558922558923) internal successors, (827), 596 states have internal predecessors, (827), 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) [2024-10-24 14:47:00,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 839 transitions. [2024-10-24 14:47:00,131 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 839 transitions. Word has length 102 [2024-10-24 14:47:00,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:47:00,132 INFO L471 AbstractCegarLoop]: Abstraction has 603 states and 839 transitions. [2024-10-24 14:47:00,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 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) [2024-10-24 14:47:00,132 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 839 transitions. [2024-10-24 14:47:00,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-10-24 14:47:00,133 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:47:00,133 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:47:00,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 14:47:00,134 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:47:00,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:47:00,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1227096963, now seen corresponding path program 1 times [2024-10-24 14:47:00,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:47:00,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891965836] [2024-10-24 14:47:00,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:00,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:47:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:00,320 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:47:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:00,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:47:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:00,327 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:47:00,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:47:00,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891965836] [2024-10-24 14:47:00,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891965836] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:47:00,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:47:00,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 14:47:00,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320109763] [2024-10-24 14:47:00,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:47:00,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 14:47:00,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:47:00,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 14:47:00,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:47:00,330 INFO L87 Difference]: Start difference. First operand 603 states and 839 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 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) [2024-10-24 14:47:00,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:47:00,647 INFO L93 Difference]: Finished difference Result 1144 states and 1595 transitions. [2024-10-24 14:47:00,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 14:47:00,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 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 102 [2024-10-24 14:47:00,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:47:00,651 INFO L225 Difference]: With dead ends: 1144 [2024-10-24 14:47:00,651 INFO L226 Difference]: Without dead ends: 617 [2024-10-24 14:47:00,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 14:47:00,654 INFO L432 NwaCegarLoop]: 466 mSDtfsCounter, 8 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:47:00,654 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1301 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:47:00,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2024-10-24 14:47:00,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 615. [2024-10-24 14:47:00,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 606 states have (on average 1.3844884488448845) internal successors, (839), 608 states have internal predecessors, (839), 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) [2024-10-24 14:47:00,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 851 transitions. [2024-10-24 14:47:00,671 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 851 transitions. Word has length 102 [2024-10-24 14:47:00,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:47:00,671 INFO L471 AbstractCegarLoop]: Abstraction has 615 states and 851 transitions. [2024-10-24 14:47:00,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 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) [2024-10-24 14:47:00,672 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 851 transitions. [2024-10-24 14:47:00,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-10-24 14:47:00,674 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:47:00,674 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:47:00,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 14:47:00,675 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:47:00,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:47:00,675 INFO L85 PathProgramCache]: Analyzing trace with hash -2100519679, now seen corresponding path program 1 times [2024-10-24 14:47:00,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:47:00,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898544851] [2024-10-24 14:47:00,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:00,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:47:00,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:01,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-24 14:47:01,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:01,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:47:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:01,177 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 14:47:01,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:47:01,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898544851] [2024-10-24 14:47:01,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898544851] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:47:01,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51311668] [2024-10-24 14:47:01,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:01,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:47:01,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:47:01,181 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:47:01,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 14:47:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:01,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-24 14:47:01,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:47:01,577 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 [2024-10-24 14:47:01,629 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 14 treesize of output 15 [2024-10-24 14:47:02,746 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:47:02,747 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:47:02,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51311668] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:47:02,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:47:02,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [5] total 15 [2024-10-24 14:47:02,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411916646] [2024-10-24 14:47:02,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:47:02,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 14:47:02,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:47:02,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 14:47:02,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-10-24 14:47:02,750 INFO L87 Difference]: Start difference. First operand 615 states and 851 transitions. Second operand has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 12 states have internal predecessors, (95), 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) [2024-10-24 14:47:05,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:47:05,187 INFO L93 Difference]: Finished difference Result 1415 states and 1946 transitions. [2024-10-24 14:47:05,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 14:47:05,187 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 12 states have internal predecessors, (95), 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 102 [2024-10-24 14:47:05,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:47:05,192 INFO L225 Difference]: With dead ends: 1415 [2024-10-24 14:47:05,192 INFO L226 Difference]: Without dead ends: 892 [2024-10-24 14:47:05,193 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2024-10-24 14:47:05,194 INFO L432 NwaCegarLoop]: 434 mSDtfsCounter, 717 mSDsluCounter, 2671 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 3105 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-24 14:47:05,194 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 3105 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-24 14:47:05,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2024-10-24 14:47:05,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 647. [2024-10-24 14:47:05,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 638 states have (on average 1.3730407523510972) internal successors, (876), 640 states have internal predecessors, (876), 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) [2024-10-24 14:47:05,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 888 transitions. [2024-10-24 14:47:05,213 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 888 transitions. Word has length 102 [2024-10-24 14:47:05,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:47:05,215 INFO L471 AbstractCegarLoop]: Abstraction has 647 states and 888 transitions. [2024-10-24 14:47:05,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 12 states have internal predecessors, (95), 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) [2024-10-24 14:47:05,215 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 888 transitions. [2024-10-24 14:47:05,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-10-24 14:47:05,216 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:47:05,216 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:47:05,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 14:47:05,420 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 [2024-10-24 14:47:05,421 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:47:05,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:47:05,421 INFO L85 PathProgramCache]: Analyzing trace with hash 432345752, now seen corresponding path program 1 times [2024-10-24 14:47:05,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:47:05,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929748247] [2024-10-24 14:47:05,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:05,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:47:05,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:05,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 14:47:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:05,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-24 14:47:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:05,934 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 14:47:05,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:47:05,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929748247] [2024-10-24 14:47:05,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929748247] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:47:05,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324031665] [2024-10-24 14:47:05,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:05,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:47:05,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:47:05,936 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:47:05,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 14:47:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:06,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-24 14:47:06,276 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:47:06,283 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 [2024-10-24 14:47:06,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-10-24 14:47:06,497 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 [2024-10-24 14:47:06,532 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:47:06,533 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 14:47:06,819 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:47:06,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324031665] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-24 14:47:06,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-24 14:47:06,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 7] total 12 [2024-10-24 14:47:06,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320107053] [2024-10-24 14:47:06,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:47:06,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 14:47:06,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:47:06,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 14:47:06,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-10-24 14:47:06,822 INFO L87 Difference]: Start difference. First operand 647 states and 888 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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) [2024-10-24 14:47:06,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:47:06,946 INFO L93 Difference]: Finished difference Result 831 states and 1137 transitions. [2024-10-24 14:47:06,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 14:47:06,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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 103 [2024-10-24 14:47:06,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:47:06,951 INFO L225 Difference]: With dead ends: 831 [2024-10-24 14:47:06,951 INFO L226 Difference]: Without dead ends: 821 [2024-10-24 14:47:06,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 200 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-10-24 14:47:06,953 INFO L432 NwaCegarLoop]: 469 mSDtfsCounter, 559 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 14:47:06,953 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 1405 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 14:47:06,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2024-10-24 14:47:06,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 649. [2024-10-24 14:47:06,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 640 states have (on average 1.371875) internal successors, (878), 642 states have internal predecessors, (878), 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) [2024-10-24 14:47:06,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 890 transitions. [2024-10-24 14:47:06,982 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 890 transitions. Word has length 103 [2024-10-24 14:47:06,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:47:06,983 INFO L471 AbstractCegarLoop]: Abstraction has 649 states and 890 transitions. [2024-10-24 14:47:06,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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) [2024-10-24 14:47:06,983 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 890 transitions. [2024-10-24 14:47:06,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-10-24 14:47:06,985 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:47:06,985 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:47:07,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 14:47:07,186 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 [2024-10-24 14:47:07,186 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:47:07,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:47:07,187 INFO L85 PathProgramCache]: Analyzing trace with hash 2015827253, now seen corresponding path program 1 times [2024-10-24 14:47:07,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:47:07,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132815349] [2024-10-24 14:47:07,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:07,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:47:07,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:07,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 14:47:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:07,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-24 14:47:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:07,507 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:47:07,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:47:07,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132815349] [2024-10-24 14:47:07,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132815349] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:47:07,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:47:07,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 14:47:07,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427612174] [2024-10-24 14:47:07,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:47:07,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 14:47:07,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:47:07,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 14:47:07,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 14:47:07,509 INFO L87 Difference]: Start difference. First operand 649 states and 890 transitions. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 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) [2024-10-24 14:47:08,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:47:08,028 INFO L93 Difference]: Finished difference Result 1477 states and 2026 transitions. [2024-10-24 14:47:08,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:47:08,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 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 157 [2024-10-24 14:47:08,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:47:08,034 INFO L225 Difference]: With dead ends: 1477 [2024-10-24 14:47:08,034 INFO L226 Difference]: Without dead ends: 999 [2024-10-24 14:47:08,035 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:47:08,036 INFO L432 NwaCegarLoop]: 644 mSDtfsCounter, 1067 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 2366 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:47:08,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 2366 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 14:47:08,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2024-10-24 14:47:08,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 789. [2024-10-24 14:47:08,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 779 states have (on average 1.3697047496790757) internal successors, (1067), 782 states have internal predecessors, (1067), 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) [2024-10-24 14:47:08,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1081 transitions. [2024-10-24 14:47:08,064 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1081 transitions. Word has length 157 [2024-10-24 14:47:08,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:47:08,065 INFO L471 AbstractCegarLoop]: Abstraction has 789 states and 1081 transitions. [2024-10-24 14:47:08,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 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) [2024-10-24 14:47:08,065 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1081 transitions. [2024-10-24 14:47:08,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-10-24 14:47:08,067 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:47:08,067 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:47:08,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 14:47:08,067 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:47:08,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:47:08,068 INFO L85 PathProgramCache]: Analyzing trace with hash -2000694175, now seen corresponding path program 1 times [2024-10-24 14:47:08,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:47:08,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210904236] [2024-10-24 14:47:08,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:08,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:47:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:08,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-24 14:47:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:08,527 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-24 14:47:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:08,531 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 14:47:08,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:47:08,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210904236] [2024-10-24 14:47:08,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210904236] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:47:08,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213837577] [2024-10-24 14:47:08,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:08,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:47:08,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:47:08,534 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) [2024-10-24 14:47:08,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 14:47:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:08,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-10-24 14:47:08,968 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:47:08,975 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 [2024-10-24 14:47:08,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2024-10-24 14:47:08,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-10-24 14:47:11,297 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:47:11,297 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:47:11,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213837577] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:47:11,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:47:11,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [5] total 17 [2024-10-24 14:47:11,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61455042] [2024-10-24 14:47:11,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:47:11,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 14:47:11,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:47:11,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 14:47:11,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-10-24 14:47:11,300 INFO L87 Difference]: Start difference. First operand 789 states and 1081 transitions. Second operand has 14 states, 14 states have (on average 11.428571428571429) internal successors, (160), 14 states have internal predecessors, (160), 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) [2024-10-24 14:47:13,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:47:13,304 INFO L93 Difference]: Finished difference Result 1677 states and 2298 transitions. [2024-10-24 14:47:13,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 14:47:13,305 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.428571428571429) internal successors, (160), 14 states have internal predecessors, (160), 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 167 [2024-10-24 14:47:13,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:47:13,309 INFO L225 Difference]: With dead ends: 1677 [2024-10-24 14:47:13,309 INFO L226 Difference]: Without dead ends: 1012 [2024-10-24 14:47:13,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2024-10-24 14:47:13,311 INFO L432 NwaCegarLoop]: 456 mSDtfsCounter, 717 mSDsluCounter, 2792 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 3248 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:47:13,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 3248 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-24 14:47:13,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2024-10-24 14:47:13,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 791. [2024-10-24 14:47:13,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 781 states have (on average 1.3687580025608195) internal successors, (1069), 784 states have internal predecessors, (1069), 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) [2024-10-24 14:47:13,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1083 transitions. [2024-10-24 14:47:13,348 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1083 transitions. Word has length 167 [2024-10-24 14:47:13,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:47:13,348 INFO L471 AbstractCegarLoop]: Abstraction has 791 states and 1083 transitions. [2024-10-24 14:47:13,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.428571428571429) internal successors, (160), 14 states have internal predecessors, (160), 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) [2024-10-24 14:47:13,349 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1083 transitions. [2024-10-24 14:47:13,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-10-24 14:47:13,351 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:47:13,351 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:47:13,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 14:47:13,551 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 [2024-10-24 14:47:13,552 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:47:13,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:47:13,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1823720958, now seen corresponding path program 1 times [2024-10-24 14:47:13,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:47:13,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054880554] [2024-10-24 14:47:13,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:13,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:47:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:14,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:47:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:14,066 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-24 14:47:14,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:14,071 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 14:47:14,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:47:14,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054880554] [2024-10-24 14:47:14,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054880554] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:47:14,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431927459] [2024-10-24 14:47:14,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:14,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:47:14,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:47:14,074 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) [2024-10-24 14:47:14,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 14:47:14,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:14,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-24 14:47:14,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:47:14,504 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 [2024-10-24 14:47:14,840 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 14:47:14,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 55 [2024-10-24 14:47:15,004 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 14:47:15,004 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:47:15,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431927459] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:47:15,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:47:15,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2024-10-24 14:47:15,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187227723] [2024-10-24 14:47:15,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:47:15,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 14:47:15,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:47:15,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 14:47:15,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-10-24 14:47:15,006 INFO L87 Difference]: Start difference. First operand 791 states and 1083 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) [2024-10-24 14:47:15,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:47:15,912 INFO L93 Difference]: Finished difference Result 1434 states and 1949 transitions. [2024-10-24 14:47:15,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:47:15,912 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 169 [2024-10-24 14:47:15,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:47:15,917 INFO L225 Difference]: With dead ends: 1434 [2024-10-24 14:47:15,917 INFO L226 Difference]: Without dead ends: 1023 [2024-10-24 14:47:15,918 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2024-10-24 14:47:15,918 INFO L432 NwaCegarLoop]: 477 mSDtfsCounter, 476 mSDsluCounter, 2827 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 3304 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 14:47:15,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 3304 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 14:47:15,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2024-10-24 14:47:15,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 826. [2024-10-24 14:47:15,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 816 states have (on average 1.357843137254902) internal successors, (1108), 819 states have internal predecessors, (1108), 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) [2024-10-24 14:47:15,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1122 transitions. [2024-10-24 14:47:15,945 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1122 transitions. Word has length 169 [2024-10-24 14:47:15,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:47:15,946 INFO L471 AbstractCegarLoop]: Abstraction has 826 states and 1122 transitions. [2024-10-24 14:47:15,946 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) [2024-10-24 14:47:15,947 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1122 transitions. [2024-10-24 14:47:15,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-10-24 14:47:15,948 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:47:15,949 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:47:15,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 14:47:16,152 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 [2024-10-24 14:47:16,153 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:47:16,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:47:16,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1152863562, now seen corresponding path program 1 times [2024-10-24 14:47:16,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:47:16,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609438866] [2024-10-24 14:47:16,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:16,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:47:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:16,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:47:16,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:16,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-24 14:47:16,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:16,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 14:47:16,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:47:16,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609438866] [2024-10-24 14:47:16,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609438866] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:47:16,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606930410] [2024-10-24 14:47:16,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:16,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:47:16,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:47:16,571 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) [2024-10-24 14:47:16,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 14:47:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:16,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 14:47:16,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:47:17,074 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 14:47:17,075 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:47:17,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606930410] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:47:17,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:47:17,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-10-24 14:47:17,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925619653] [2024-10-24 14:47:17,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:47:17,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 14:47:17,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:47:17,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 14:47:17,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-24 14:47:17,078 INFO L87 Difference]: Start difference. First operand 826 states and 1122 transitions. Second operand has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 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) [2024-10-24 14:47:17,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:47:17,428 INFO L93 Difference]: Finished difference Result 1518 states and 2058 transitions. [2024-10-24 14:47:17,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 14:47:17,429 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 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 [2024-10-24 14:47:17,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:47:17,433 INFO L225 Difference]: With dead ends: 1518 [2024-10-24 14:47:17,433 INFO L226 Difference]: Without dead ends: 874 [2024-10-24 14:47:17,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-10-24 14:47:17,435 INFO L432 NwaCegarLoop]: 460 mSDtfsCounter, 34 mSDsluCounter, 1523 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:47:17,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1983 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:47:17,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2024-10-24 14:47:17,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 859. [2024-10-24 14:47:17,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 849 states have (on average 1.347467608951708) internal successors, (1144), 852 states have internal predecessors, (1144), 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) [2024-10-24 14:47:17,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1158 transitions. [2024-10-24 14:47:17,465 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1158 transitions. Word has length 170 [2024-10-24 14:47:17,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:47:17,465 INFO L471 AbstractCegarLoop]: Abstraction has 859 states and 1158 transitions. [2024-10-24 14:47:17,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 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) [2024-10-24 14:47:17,466 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1158 transitions. [2024-10-24 14:47:17,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-10-24 14:47:17,467 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:47:17,467 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:47:17,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 14:47:17,668 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,SelfDestructingSolverStorable11 [2024-10-24 14:47:17,669 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:47:17,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:47:17,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1843480295, now seen corresponding path program 1 times [2024-10-24 14:47:17,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:47:17,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561138971] [2024-10-24 14:47:17,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:17,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:47:17,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:18,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:47:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:18,143 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-24 14:47:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:18,146 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 14:47:18,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:47:18,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561138971] [2024-10-24 14:47:18,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561138971] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:47:18,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:47:18,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 14:47:18,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358372311] [2024-10-24 14:47:18,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:47:18,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:47:18,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:47:18,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:47:18,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:47:18,149 INFO L87 Difference]: Start difference. First operand 859 states and 1158 transitions. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 6 states have internal predecessors, (163), 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) [2024-10-24 14:47:18,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:47:18,637 INFO L93 Difference]: Finished difference Result 1281 states and 1734 transitions. [2024-10-24 14:47:18,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:47:18,638 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 6 states have internal predecessors, (163), 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 171 [2024-10-24 14:47:18,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:47:18,642 INFO L225 Difference]: With dead ends: 1281 [2024-10-24 14:47:18,642 INFO L226 Difference]: Without dead ends: 870 [2024-10-24 14:47:18,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 14:47:18,643 INFO L432 NwaCegarLoop]: 461 mSDtfsCounter, 15 mSDsluCounter, 1928 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2389 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:47:18,643 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2389 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 14:47:18,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2024-10-24 14:47:18,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 868. [2024-10-24 14:47:18,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 858 states have (on average 1.343822843822844) internal successors, (1153), 861 states have internal predecessors, (1153), 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) [2024-10-24 14:47:18,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1167 transitions. [2024-10-24 14:47:18,672 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1167 transitions. Word has length 171 [2024-10-24 14:47:18,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:47:18,673 INFO L471 AbstractCegarLoop]: Abstraction has 868 states and 1167 transitions. [2024-10-24 14:47:18,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 6 states have internal predecessors, (163), 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) [2024-10-24 14:47:18,673 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1167 transitions. [2024-10-24 14:47:18,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-24 14:47:18,675 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:47:18,675 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:47:18,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 14:47:18,675 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:47:18,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:47:18,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1093501277, now seen corresponding path program 1 times [2024-10-24 14:47:18,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:47:18,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638004978] [2024-10-24 14:47:18,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:18,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:47:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:19,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:47:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:19,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-24 14:47:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:19,037 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 14:47:19,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:47:19,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638004978] [2024-10-24 14:47:19,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638004978] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:47:19,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:47:19,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 14:47:19,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724697099] [2024-10-24 14:47:19,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:47:19,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 14:47:19,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:47:19,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 14:47:19,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 14:47:19,040 INFO L87 Difference]: Start difference. First operand 868 states and 1167 transitions. Second operand has 8 states, 8 states have (on average 20.5) internal successors, (164), 7 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) [2024-10-24 14:47:19,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:47:19,574 INFO L93 Difference]: Finished difference Result 1305 states and 1761 transitions. [2024-10-24 14:47:19,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 14:47:19,574 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.5) internal successors, (164), 7 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 172 [2024-10-24 14:47:19,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:47:19,578 INFO L225 Difference]: With dead ends: 1305 [2024-10-24 14:47:19,579 INFO L226 Difference]: Without dead ends: 885 [2024-10-24 14:47:19,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 14:47:19,580 INFO L432 NwaCegarLoop]: 451 mSDtfsCounter, 19 mSDsluCounter, 2304 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 2755 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:47:19,581 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 2755 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 14:47:19,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2024-10-24 14:47:19,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 880. [2024-10-24 14:47:19,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 870 states have (on average 1.342528735632184) internal successors, (1168), 873 states have internal predecessors, (1168), 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) [2024-10-24 14:47:19,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1182 transitions. [2024-10-24 14:47:19,654 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1182 transitions. Word has length 172 [2024-10-24 14:47:19,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:47:19,658 INFO L471 AbstractCegarLoop]: Abstraction has 880 states and 1182 transitions. [2024-10-24 14:47:19,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.5) internal successors, (164), 7 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) [2024-10-24 14:47:19,659 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1182 transitions. [2024-10-24 14:47:19,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-24 14:47:19,661 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:47:19,661 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:47:19,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 14:47:19,661 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:47:19,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:47:19,662 INFO L85 PathProgramCache]: Analyzing trace with hash 131360391, now seen corresponding path program 1 times [2024-10-24 14:47:19,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:47:19,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972481174] [2024-10-24 14:47:19,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:19,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:47:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:20,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:47:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:20,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-24 14:47:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:20,075 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 14:47:20,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:47:20,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972481174] [2024-10-24 14:47:20,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972481174] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:47:20,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026200786] [2024-10-24 14:47:20,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:20,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:47:20,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:47:20,078 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) [2024-10-24 14:47:20,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 14:47:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:20,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 14:47:20,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:47:20,838 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 14:47:20,838 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:47:20,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026200786] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:47:20,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:47:20,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2024-10-24 14:47:20,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383467346] [2024-10-24 14:47:20,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:47:20,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:47:20,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:47:20,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:47:20,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:47:20,840 INFO L87 Difference]: Start difference. First operand 880 states and 1182 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 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) [2024-10-24 14:47:21,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:47:21,193 INFO L93 Difference]: Finished difference Result 1327 states and 1786 transitions. [2024-10-24 14:47:21,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:47:21,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 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 172 [2024-10-24 14:47:21,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:47:21,198 INFO L225 Difference]: With dead ends: 1327 [2024-10-24 14:47:21,198 INFO L226 Difference]: Without dead ends: 895 [2024-10-24 14:47:21,200 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:47:21,200 INFO L432 NwaCegarLoop]: 463 mSDtfsCounter, 12 mSDsluCounter, 1971 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2434 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 14:47:21,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2434 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 14:47:21,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2024-10-24 14:47:21,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 880. [2024-10-24 14:47:21,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 870 states have (on average 1.342528735632184) internal successors, (1168), 873 states have internal predecessors, (1168), 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) [2024-10-24 14:47:21,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1182 transitions. [2024-10-24 14:47:21,232 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1182 transitions. Word has length 172 [2024-10-24 14:47:21,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:47:21,232 INFO L471 AbstractCegarLoop]: Abstraction has 880 states and 1182 transitions. [2024-10-24 14:47:21,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 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) [2024-10-24 14:47:21,232 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1182 transitions. [2024-10-24 14:47:21,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-10-24 14:47:21,234 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:47:21,234 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:47:21,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-24 14:47:21,438 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,SelfDestructingSolverStorable14 [2024-10-24 14:47:21,439 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:47:21,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:47:21,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1243897965, now seen corresponding path program 1 times [2024-10-24 14:47:21,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:47:21,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265291002] [2024-10-24 14:47:21,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:21,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:47:21,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:21,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:47:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:21,908 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-24 14:47:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:21,911 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 14:47:21,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:47:21,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265291002] [2024-10-24 14:47:21,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265291002] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:47:21,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:47:21,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-24 14:47:21,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698794182] [2024-10-24 14:47:21,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:47:21,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 14:47:21,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:47:21,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 14:47:21,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:47:21,914 INFO L87 Difference]: Start difference. First operand 880 states and 1182 transitions. Second operand has 10 states, 10 states have (on average 16.5) internal successors, (165), 9 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) [2024-10-24 14:47:22,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:47:22,440 INFO L93 Difference]: Finished difference Result 1344 states and 1809 transitions. [2024-10-24 14:47:22,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:47:22,441 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.5) internal successors, (165), 9 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 173 [2024-10-24 14:47:22,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:47:22,445 INFO L225 Difference]: With dead ends: 1344 [2024-10-24 14:47:22,445 INFO L226 Difference]: Without dead ends: 912 [2024-10-24 14:47:22,446 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:47:22,446 INFO L432 NwaCegarLoop]: 451 mSDtfsCounter, 27 mSDsluCounter, 2785 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 3236 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:47:22,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 3236 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 14:47:22,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2024-10-24 14:47:22,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 901. [2024-10-24 14:47:22,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 891 states have (on average 1.3411896745230079) internal successors, (1195), 894 states have internal predecessors, (1195), 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) [2024-10-24 14:47:22,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1209 transitions. [2024-10-24 14:47:22,478 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1209 transitions. Word has length 173 [2024-10-24 14:47:22,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:47:22,479 INFO L471 AbstractCegarLoop]: Abstraction has 901 states and 1209 transitions. [2024-10-24 14:47:22,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.5) internal successors, (165), 9 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) [2024-10-24 14:47:22,479 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1209 transitions. [2024-10-24 14:47:22,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-10-24 14:47:22,481 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:47:22,481 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-24 14:47:22,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 14:47:22,481 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:47:22,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:47:22,482 INFO L85 PathProgramCache]: Analyzing trace with hash 559904009, now seen corresponding path program 1 times [2024-10-24 14:47:22,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:47:22,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753139756] [2024-10-24 14:47:22,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:22,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:47:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:22,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:47:22,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:22,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-24 14:47:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:22,860 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 14:47:22,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:47:22,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753139756] [2024-10-24 14:47:22,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753139756] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:47:22,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019325848] [2024-10-24 14:47:22,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:22,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:47:22,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:47:22,862 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) [2024-10-24 14:47:22,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 14:47:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:23,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-24 14:47:23,360 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:47:23,451 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 14:47:23,451 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:47:23,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019325848] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:47:23,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:47:23,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2024-10-24 14:47:23,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796857524] [2024-10-24 14:47:23,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:47:23,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:47:23,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:47:23,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:47:23,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:47:23,456 INFO L87 Difference]: Start difference. First operand 901 states and 1209 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 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) [2024-10-24 14:47:23,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:47:23,689 INFO L93 Difference]: Finished difference Result 1369 states and 1840 transitions. [2024-10-24 14:47:23,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:47:23,690 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), 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 [2024-10-24 14:47:23,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:47:23,694 INFO L225 Difference]: With dead ends: 1369 [2024-10-24 14:47:23,694 INFO L226 Difference]: Without dead ends: 916 [2024-10-24 14:47:23,695 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:47:23,695 INFO L432 NwaCegarLoop]: 454 mSDtfsCounter, 17 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2441 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 14:47:23,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2441 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 14:47:23,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2024-10-24 14:47:23,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 907. [2024-10-24 14:47:23,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 897 states have (on average 1.338907469342252) internal successors, (1201), 900 states have internal predecessors, (1201), 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) [2024-10-24 14:47:23,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1215 transitions. [2024-10-24 14:47:23,724 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1215 transitions. Word has length 173 [2024-10-24 14:47:23,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:47:23,725 INFO L471 AbstractCegarLoop]: Abstraction has 907 states and 1215 transitions. [2024-10-24 14:47:23,725 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), 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) [2024-10-24 14:47:23,725 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1215 transitions. [2024-10-24 14:47:23,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-10-24 14:47:23,727 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:47:23,727 INFO L215 NwaCegarLoop]: trace histogram [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, 1] [2024-10-24 14:47:23,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-24 14:47:23,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:47:23,932 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:47:23,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:47:23,932 INFO L85 PathProgramCache]: Analyzing trace with hash 197796599, now seen corresponding path program 1 times [2024-10-24 14:47:23,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:47:23,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242934692] [2024-10-24 14:47:23,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:23,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:47:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:24,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:47:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:24,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-24 14:47:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:24,526 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 14:47:24,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:47:24,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242934692] [2024-10-24 14:47:24,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242934692] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:47:24,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:47:24,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-24 14:47:24,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523542405] [2024-10-24 14:47:24,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:47:24,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 14:47:24,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:47:24,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 14:47:24,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-10-24 14:47:24,530 INFO L87 Difference]: Start difference. First operand 907 states and 1215 transitions. Second operand has 11 states, 11 states have (on average 15.090909090909092) internal successors, (166), 10 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) [2024-10-24 14:47:25,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:47:25,182 INFO L93 Difference]: Finished difference Result 1395 states and 1875 transitions. [2024-10-24 14:47:25,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 14:47:25,183 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.090909090909092) internal successors, (166), 10 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 174 [2024-10-24 14:47:25,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:47:25,186 INFO L225 Difference]: With dead ends: 1395 [2024-10-24 14:47:25,186 INFO L226 Difference]: Without dead ends: 936 [2024-10-24 14:47:25,187 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-10-24 14:47:25,188 INFO L432 NwaCegarLoop]: 458 mSDtfsCounter, 33 mSDsluCounter, 3136 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3594 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 14:47:25,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3594 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 14:47:25,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2024-10-24 14:47:25,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 916. [2024-10-24 14:47:25,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 906 states have (on average 1.335540838852097) internal successors, (1210), 909 states have internal predecessors, (1210), 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) [2024-10-24 14:47:25,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1224 transitions. [2024-10-24 14:47:25,217 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1224 transitions. Word has length 174 [2024-10-24 14:47:25,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:47:25,217 INFO L471 AbstractCegarLoop]: Abstraction has 916 states and 1224 transitions. [2024-10-24 14:47:25,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.090909090909092) internal successors, (166), 10 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) [2024-10-24 14:47:25,218 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1224 transitions. [2024-10-24 14:47:25,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-10-24 14:47:25,219 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:47:25,220 INFO L215 NwaCegarLoop]: trace histogram [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, 1] [2024-10-24 14:47:25,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-24 14:47:25,220 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:47:25,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:47:25,221 INFO L85 PathProgramCache]: Analyzing trace with hash 468820443, now seen corresponding path program 1 times [2024-10-24 14:47:25,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:47:25,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201933299] [2024-10-24 14:47:25,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:25,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:47:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:25,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:47:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:25,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-24 14:47:25,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:25,667 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 14:47:25,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:47:25,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201933299] [2024-10-24 14:47:25,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201933299] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:47:25,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923350389] [2024-10-24 14:47:25,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:25,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:47:25,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:47:25,670 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:47:25,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 14:47:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:26,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-24 14:47:26,183 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:47:26,478 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 14:47:26,479 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:47:26,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923350389] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:47:26,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:47:26,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2024-10-24 14:47:26,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403299858] [2024-10-24 14:47:26,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:47:26,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 14:47:26,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:47:26,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 14:47:26,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-10-24 14:47:26,481 INFO L87 Difference]: Start difference. First operand 916 states and 1224 transitions. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 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) [2024-10-24 14:47:27,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:47:27,870 INFO L93 Difference]: Finished difference Result 1429 states and 1912 transitions. [2024-10-24 14:47:27,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:47:27,870 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 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 174 [2024-10-24 14:47:27,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:47:27,875 INFO L225 Difference]: With dead ends: 1429 [2024-10-24 14:47:27,875 INFO L226 Difference]: Without dead ends: 961 [2024-10-24 14:47:27,876 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-10-24 14:47:27,877 INFO L432 NwaCegarLoop]: 464 mSDtfsCounter, 17 mSDsluCounter, 3175 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 3639 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:47:27,877 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 3639 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-24 14:47:27,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2024-10-24 14:47:27,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 952. [2024-10-24 14:47:27,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 942 states have (on average 1.332271762208068) internal successors, (1255), 945 states have internal predecessors, (1255), 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) [2024-10-24 14:47:27,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1269 transitions. [2024-10-24 14:47:27,906 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1269 transitions. Word has length 174 [2024-10-24 14:47:27,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:47:27,906 INFO L471 AbstractCegarLoop]: Abstraction has 952 states and 1269 transitions. [2024-10-24 14:47:27,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 10 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) [2024-10-24 14:47:27,906 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1269 transitions. [2024-10-24 14:47:27,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-10-24 14:47:27,908 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:47:27,909 INFO L215 NwaCegarLoop]: trace histogram [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, 1] [2024-10-24 14:47:27,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-24 14:47:28,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:47:28,110 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:47:28,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:47:28,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1154668382, now seen corresponding path program 1 times [2024-10-24 14:47:28,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:47:28,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382456904] [2024-10-24 14:47:28,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:28,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:47:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:28,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:47:28,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:28,525 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-24 14:47:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:28,528 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 14:47:28,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:47:28,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382456904] [2024-10-24 14:47:28,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382456904] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:47:28,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407334556] [2024-10-24 14:47:28,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:28,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:47:28,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:47:28,532 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:47:28,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-24 14:47:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:29,141 INFO L255 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-24 14:47:29,144 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:47:29,314 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 14:47:29,315 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:47:29,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407334556] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:47:29,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:47:29,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2024-10-24 14:47:29,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747823660] [2024-10-24 14:47:29,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:47:29,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:47:29,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:47:29,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:47:29,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:47:29,317 INFO L87 Difference]: Start difference. First operand 952 states and 1269 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) [2024-10-24 14:47:29,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:47:29,707 INFO L93 Difference]: Finished difference Result 1471 states and 1960 transitions. [2024-10-24 14:47:29,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:47:29,708 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 174 [2024-10-24 14:47:29,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:47:29,713 INFO L225 Difference]: With dead ends: 1471 [2024-10-24 14:47:29,713 INFO L226 Difference]: Without dead ends: 967 [2024-10-24 14:47:29,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:47:29,715 INFO L432 NwaCegarLoop]: 463 mSDtfsCounter, 10 mSDsluCounter, 1971 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2434 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:47:29,716 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2434 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 14:47:29,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2024-10-24 14:47:29,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 952. [2024-10-24 14:47:29,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 942 states have (on average 1.332271762208068) internal successors, (1255), 945 states have internal predecessors, (1255), 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) [2024-10-24 14:47:29,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1269 transitions. [2024-10-24 14:47:29,748 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1269 transitions. Word has length 174 [2024-10-24 14:47:29,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:47:29,749 INFO L471 AbstractCegarLoop]: Abstraction has 952 states and 1269 transitions. [2024-10-24 14:47:29,749 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) [2024-10-24 14:47:29,749 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1269 transitions. [2024-10-24 14:47:29,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-10-24 14:47:29,751 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:47:29,751 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1] [2024-10-24 14:47:29,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-24 14:47:29,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:47:29,952 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:47:29,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:47:29,953 INFO L85 PathProgramCache]: Analyzing trace with hash 520685674, now seen corresponding path program 1 times [2024-10-24 14:47:29,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:47:29,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341108376] [2024-10-24 14:47:29,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:29,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:47:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:30,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-24 14:47:30,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:30,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-24 14:47:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:30,370 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 14:47:30,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:47:30,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341108376] [2024-10-24 14:47:30,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341108376] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:47:30,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816321467] [2024-10-24 14:47:30,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:30,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:47:30,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:47:30,372 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:47:30,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-24 14:47:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:31,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 14:47:31,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:47:31,167 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:47:31,167 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:47:31,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816321467] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:47:31,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:47:31,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2024-10-24 14:47:31,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154125893] [2024-10-24 14:47:31,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:47:31,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:47:31,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:47:31,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:47:31,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:47:31,169 INFO L87 Difference]: Start difference. First operand 952 states and 1269 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 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) [2024-10-24 14:47:31,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:47:31,632 INFO L93 Difference]: Finished difference Result 1791 states and 2392 transitions. [2024-10-24 14:47:31,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:47:31,633 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 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 175 [2024-10-24 14:47:31,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:47:31,636 INFO L225 Difference]: With dead ends: 1791 [2024-10-24 14:47:31,637 INFO L226 Difference]: Without dead ends: 975 [2024-10-24 14:47:31,638 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:47:31,639 INFO L432 NwaCegarLoop]: 458 mSDtfsCounter, 12 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2126 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:47:31,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2126 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 14:47:31,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2024-10-24 14:47:31,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 967. [2024-10-24 14:47:31,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 957 states have (on average 1.3322884012539185) internal successors, (1275), 960 states have internal predecessors, (1275), 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) [2024-10-24 14:47:31,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1289 transitions. [2024-10-24 14:47:31,666 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1289 transitions. Word has length 175 [2024-10-24 14:47:31,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:47:31,666 INFO L471 AbstractCegarLoop]: Abstraction has 967 states and 1289 transitions. [2024-10-24 14:47:31,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 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) [2024-10-24 14:47:31,667 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1289 transitions. [2024-10-24 14:47:31,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-10-24 14:47:31,669 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:47:31,669 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2024-10-24 14:47:31,694 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-24 14:47:31,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-24 14:47:31,870 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:47:31,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:47:31,871 INFO L85 PathProgramCache]: Analyzing trace with hash 44197377, now seen corresponding path program 1 times [2024-10-24 14:47:31,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:47:31,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093900956] [2024-10-24 14:47:31,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:31,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:47:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:32,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 14:47:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:32,285 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-24 14:47:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:32,289 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 14:47:32,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:47:32,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093900956] [2024-10-24 14:47:32,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093900956] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:47:32,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63090548] [2024-10-24 14:47:32,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:32,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:47:32,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:47:32,292 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:47:32,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-24 14:47:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:32,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 778 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-10-24 14:47:32,794 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:47:32,918 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:47:32,918 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:47:32,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63090548] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:47:32,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:47:32,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2024-10-24 14:47:32,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431474178] [2024-10-24 14:47:32,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:47:32,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 14:47:32,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:47:32,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 14:47:32,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-10-24 14:47:32,921 INFO L87 Difference]: Start difference. First operand 967 states and 1289 transitions. Second operand has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 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) [2024-10-24 14:47:33,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:47:33,735 INFO L93 Difference]: Finished difference Result 1806 states and 2409 transitions. [2024-10-24 14:47:33,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 14:47:33,736 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 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 176 [2024-10-24 14:47:33,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:47:33,739 INFO L225 Difference]: With dead ends: 1806 [2024-10-24 14:47:33,739 INFO L226 Difference]: Without dead ends: 987 [2024-10-24 14:47:33,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-10-24 14:47:33,741 INFO L432 NwaCegarLoop]: 457 mSDtfsCounter, 17 mSDsluCounter, 2034 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2491 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-24 14:47:33,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2491 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-24 14:47:33,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2024-10-24 14:47:33,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 971. [2024-10-24 14:47:33,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 961 states have (on average 1.3309053069719043) internal successors, (1279), 964 states have internal predecessors, (1279), 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) [2024-10-24 14:47:33,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1293 transitions. [2024-10-24 14:47:33,767 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1293 transitions. Word has length 176 [2024-10-24 14:47:33,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:47:33,767 INFO L471 AbstractCegarLoop]: Abstraction has 971 states and 1293 transitions. [2024-10-24 14:47:33,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 8 states have internal predecessors, (169), 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) [2024-10-24 14:47:33,767 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1293 transitions. [2024-10-24 14:47:33,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-10-24 14:47:33,769 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:47:33,770 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1] [2024-10-24 14:47:33,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-24 14:47:33,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-24 14:47:33,972 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:47:33,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:47:33,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1429381139, now seen corresponding path program 1 times [2024-10-24 14:47:33,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:47:33,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174410229] [2024-10-24 14:47:33,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:33,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:47:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:34,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-24 14:47:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:34,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-24 14:47:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:34,324 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:47:34,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:47:34,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174410229] [2024-10-24 14:47:34,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174410229] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:47:34,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 14:47:34,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 14:47:34,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181307646] [2024-10-24 14:47:34,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:47:34,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 14:47:34,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:47:34,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 14:47:34,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 14:47:34,326 INFO L87 Difference]: Start difference. First operand 971 states and 1293 transitions. Second operand has 8 states, 8 states have (on average 21.125) internal successors, (169), 7 states have internal predecessors, (169), 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) [2024-10-24 14:47:34,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:47:34,886 INFO L93 Difference]: Finished difference Result 1815 states and 2424 transitions. [2024-10-24 14:47:34,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 14:47:34,886 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 7 states have internal predecessors, (169), 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 176 [2024-10-24 14:47:34,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:47:34,889 INFO L225 Difference]: With dead ends: 1815 [2024-10-24 14:47:34,889 INFO L226 Difference]: Without dead ends: 989 [2024-10-24 14:47:34,890 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-24 14:47:34,891 INFO L432 NwaCegarLoop]: 458 mSDtfsCounter, 18 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2469 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:47:34,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2469 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 14:47:34,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2024-10-24 14:47:34,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 979. [2024-10-24 14:47:34,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 969 states have (on average 1.3323013415892673) internal successors, (1291), 972 states have internal predecessors, (1291), 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) [2024-10-24 14:47:34,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1305 transitions. [2024-10-24 14:47:34,938 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1305 transitions. Word has length 176 [2024-10-24 14:47:34,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:47:34,938 INFO L471 AbstractCegarLoop]: Abstraction has 979 states and 1305 transitions. [2024-10-24 14:47:34,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.125) internal successors, (169), 7 states have internal predecessors, (169), 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) [2024-10-24 14:47:34,938 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1305 transitions. [2024-10-24 14:47:34,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-10-24 14:47:34,940 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:47:34,941 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2024-10-24 14:47:34,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-10-24 14:47:34,941 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:47:34,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:47:34,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1107544482, now seen corresponding path program 1 times [2024-10-24 14:47:34,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:47:34,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76017618] [2024-10-24 14:47:34,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:34,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:47:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:35,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-24 14:47:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:35,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 14:47:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:35,338 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 14:47:35,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:47:35,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76017618] [2024-10-24 14:47:35,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76017618] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:47:35,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650428961] [2024-10-24 14:47:35,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:35,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:47:35,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:47:35,341 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:47:35,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-24 14:47:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:36,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-24 14:47:36,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:47:36,789 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:47:36,791 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:47:36,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650428961] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:47:36,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:47:36,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2024-10-24 14:47:36,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259774901] [2024-10-24 14:47:36,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:47:36,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 14:47:36,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:47:36,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 14:47:36,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-10-24 14:47:36,794 INFO L87 Difference]: Start difference. First operand 979 states and 1305 transitions. Second operand has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 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) [2024-10-24 14:47:37,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:47:37,784 INFO L93 Difference]: Finished difference Result 1833 states and 2448 transitions. [2024-10-24 14:47:37,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 14:47:37,785 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 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 177 [2024-10-24 14:47:37,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:47:37,789 INFO L225 Difference]: With dead ends: 1833 [2024-10-24 14:47:37,789 INFO L226 Difference]: Without dead ends: 1003 [2024-10-24 14:47:37,791 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-10-24 14:47:37,791 INFO L432 NwaCegarLoop]: 460 mSDtfsCounter, 17 mSDsluCounter, 2733 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 3193 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-24 14:47:37,791 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 3193 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-24 14:47:37,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2024-10-24 14:47:37,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 993. [2024-10-24 14:47:37,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 983 states have (on average 1.3316378433367244) internal successors, (1309), 986 states have internal predecessors, (1309), 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) [2024-10-24 14:47:37,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1323 transitions. [2024-10-24 14:47:37,819 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1323 transitions. Word has length 177 [2024-10-24 14:47:37,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:47:37,820 INFO L471 AbstractCegarLoop]: Abstraction has 993 states and 1323 transitions. [2024-10-24 14:47:37,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 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) [2024-10-24 14:47:37,820 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1323 transitions. [2024-10-24 14:47:37,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-10-24 14:47:37,840 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:47:37,840 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2024-10-24 14:47:37,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-24 14:47:38,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-24 14:47:38,041 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:47:38,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:47:38,043 INFO L85 PathProgramCache]: Analyzing trace with hash -278331682, now seen corresponding path program 1 times [2024-10-24 14:47:38,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:47:38,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851643618] [2024-10-24 14:47:38,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:38,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:47:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:38,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-24 14:47:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:38,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 14:47:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:38,469 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 14:47:38,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:47:38,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851643618] [2024-10-24 14:47:38,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851643618] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:47:38,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145577980] [2024-10-24 14:47:38,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:38,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:47:38,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:47:38,471 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:47:38,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-24 14:47:38,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:38,956 INFO L255 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-24 14:47:38,959 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:47:39,072 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:47:39,073 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:47:39,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145577980] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:47:39,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:47:39,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2024-10-24 14:47:39,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903474797] [2024-10-24 14:47:39,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:47:39,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:47:39,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:47:39,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:47:39,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:47:39,075 INFO L87 Difference]: Start difference. First operand 993 states and 1323 transitions. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 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) [2024-10-24 14:47:39,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:47:39,569 INFO L93 Difference]: Finished difference Result 1853 states and 2472 transitions. [2024-10-24 14:47:39,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 14:47:39,569 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 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 177 [2024-10-24 14:47:39,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:47:39,572 INFO L225 Difference]: With dead ends: 1853 [2024-10-24 14:47:39,572 INFO L226 Difference]: Without dead ends: 1021 [2024-10-24 14:47:39,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-10-24 14:47:39,573 INFO L432 NwaCegarLoop]: 453 mSDtfsCounter, 40 mSDsluCounter, 1765 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 2218 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 14:47:39,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 2218 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 14:47:39,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2024-10-24 14:47:39,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 1007. [2024-10-24 14:47:39,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 997 states have (on average 1.332998996990973) internal successors, (1329), 1000 states have internal predecessors, (1329), 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) [2024-10-24 14:47:39,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1343 transitions. [2024-10-24 14:47:39,611 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1343 transitions. Word has length 177 [2024-10-24 14:47:39,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:47:39,611 INFO L471 AbstractCegarLoop]: Abstraction has 1007 states and 1343 transitions. [2024-10-24 14:47:39,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 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) [2024-10-24 14:47:39,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1343 transitions. [2024-10-24 14:47:39,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-10-24 14:47:39,617 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:47:39,617 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2024-10-24 14:47:39,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-24 14:47:39,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-10-24 14:47:39,818 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:47:39,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:47:39,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1440295205, now seen corresponding path program 1 times [2024-10-24 14:47:39,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:47:39,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333599715] [2024-10-24 14:47:39,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:39,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:47:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:40,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-24 14:47:40,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:40,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-24 14:47:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:40,222 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 14:47:40,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:47:40,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333599715] [2024-10-24 14:47:40,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333599715] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:47:40,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211012228] [2024-10-24 14:47:40,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:40,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:47:40,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:47:40,225 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:47:40,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-24 14:47:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:40,764 INFO L255 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-24 14:47:40,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:47:40,907 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-24 14:47:40,907 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 14:47:40,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211012228] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 14:47:40,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 14:47:40,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2024-10-24 14:47:40,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837660267] [2024-10-24 14:47:40,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 14:47:40,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 14:47:40,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 14:47:40,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 14:47:40,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:47:40,911 INFO L87 Difference]: Start difference. First operand 1007 states and 1343 transitions. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 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) [2024-10-24 14:47:41,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 14:47:41,449 INFO L93 Difference]: Finished difference Result 1861 states and 2484 transitions. [2024-10-24 14:47:41,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 14:47:41,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 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 177 [2024-10-24 14:47:41,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 14:47:41,453 INFO L225 Difference]: With dead ends: 1861 [2024-10-24 14:47:41,454 INFO L226 Difference]: Without dead ends: 1017 [2024-10-24 14:47:41,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-24 14:47:41,456 INFO L432 NwaCegarLoop]: 464 mSDtfsCounter, 10 mSDsluCounter, 1669 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2133 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-24 14:47:41,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2133 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-24 14:47:41,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2024-10-24 14:47:41,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 1007. [2024-10-24 14:47:41,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 997 states have (on average 1.332998996990973) internal successors, (1329), 1000 states have internal predecessors, (1329), 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) [2024-10-24 14:47:41,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1343 transitions. [2024-10-24 14:47:41,481 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1343 transitions. Word has length 177 [2024-10-24 14:47:41,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 14:47:41,482 INFO L471 AbstractCegarLoop]: Abstraction has 1007 states and 1343 transitions. [2024-10-24 14:47:41,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 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) [2024-10-24 14:47:41,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1343 transitions. [2024-10-24 14:47:41,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-10-24 14:47:41,484 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 14:47:41,484 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2024-10-24 14:47:41,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-24 14:47:41,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:47:41,685 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-24 14:47:41,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 14:47:41,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1010684834, now seen corresponding path program 1 times [2024-10-24 14:47:41,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 14:47:41,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105480901] [2024-10-24 14:47:41,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:41,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 14:47:41,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:41,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-24 14:47:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:42,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-24 14:47:42,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:42,024 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 14:47:42,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 14:47:42,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105480901] [2024-10-24 14:47:42,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105480901] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 14:47:42,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052994796] [2024-10-24 14:47:42,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 14:47:42,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 14:47:42,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 14:47:42,027 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 14:47:42,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-24 14:47:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 14:47:42,778 INFO L255 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-10-24 14:47:42,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 14:47:42,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-24 14:47:42,982 INFO L349 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2024-10-24 14:47:42,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2024-10-24 14:47:42,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2024-10-24 14:47:42,994 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 [2024-10-24 14:47:43,041 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 26 treesize of output 14 [2024-10-24 14:47:43,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3