./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5eef0a1d7c251abc753eabb723fe850489bfd10ab147ced1a31e6821eaf88c98 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 06:19:13,874 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:19:14,004 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 06:19:14,013 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:19:14,014 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:19:14,042 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:19:14,043 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:19:14,044 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:19:14,044 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 06:19:14,045 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 06:19:14,045 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:19:14,045 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:19:14,046 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 06:19:14,046 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 06:19:14,047 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 06:19:14,047 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:19:14,047 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:19:14,048 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:19:14,048 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:19:14,049 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:19:14,052 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:19:14,052 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:19:14,052 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:19:14,053 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:19:14,053 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:19:14,054 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:19:14,054 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:19:14,054 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:19:14,054 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:19:14,055 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 06:19:14,055 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:19:14,055 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:19:14,055 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 06:19:14,056 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:19:14,056 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:19:14,056 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:19:14,056 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 06:19:14,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:19:14,057 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:19:14,057 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 06:19:14,058 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 06:19:14,059 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:19:14,059 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5eef0a1d7c251abc753eabb723fe850489bfd10ab147ced1a31e6821eaf88c98 [2024-11-09 06:19:14,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:19:14,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:19:14,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:19:14,387 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:19:14,388 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:19:14,390 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i [2024-11-09 06:19:15,880 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:19:16,216 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:19:16,220 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i [2024-11-09 06:19:16,244 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d874712a/b1f980a08aec4557a9132c2236b9356c/FLAG01348e151 [2024-11-09 06:19:16,263 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d874712a/b1f980a08aec4557a9132c2236b9356c [2024-11-09 06:19:16,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:19:16,267 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:19:16,269 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:19:16,269 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:19:16,275 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:19:16,276 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:19:16" (1/1) ... [2024-11-09 06:19:16,277 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24c2e132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:16, skipping insertion in model container [2024-11-09 06:19:16,277 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:19:16" (1/1) ... [2024-11-09 06:19:16,333 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:19:16,825 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i[33021,33034] [2024-11-09 06:19:16,954 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i[45234,45247] [2024-11-09 06:19:16,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:19:16,975 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:19:17,039 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i[33021,33034] [2024-11-09 06:19:17,114 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-1.i[45234,45247] [2024-11-09 06:19:17,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:19:17,161 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:19:17,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:17 WrapperNode [2024-11-09 06:19:17,162 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:19:17,164 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:19:17,164 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:19:17,164 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:19:17,171 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:17" (1/1) ... [2024-11-09 06:19:17,219 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:17" (1/1) ... [2024-11-09 06:19:17,315 INFO L138 Inliner]: procedures = 177, calls = 289, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1423 [2024-11-09 06:19:17,316 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:19:17,317 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:19:17,317 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:19:17,318 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:19:17,329 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:17" (1/1) ... [2024-11-09 06:19:17,330 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:17" (1/1) ... [2024-11-09 06:19:17,341 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:17" (1/1) ... [2024-11-09 06:19:17,431 INFO L175 MemorySlicer]: Split 256 memory accesses to 3 slices as follows [2, 220, 34]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 50, 4]. [2024-11-09 06:19:17,432 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:17" (1/1) ... [2024-11-09 06:19:17,432 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:17" (1/1) ... [2024-11-09 06:19:17,479 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:17" (1/1) ... [2024-11-09 06:19:17,500 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:17" (1/1) ... [2024-11-09 06:19:17,514 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:17" (1/1) ... [2024-11-09 06:19:17,524 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:17" (1/1) ... [2024-11-09 06:19:17,539 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:19:17,540 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:19:17,542 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:19:17,542 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:19:17,543 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:17" (1/1) ... [2024-11-09 06:19:17,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 06:19:17,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:19:17,581 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 06:19:17,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 06:19:17,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 06:19:17,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 06:19:17,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 06:19:17,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 06:19:17,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 06:19:17,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 06:19:17,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 06:19:17,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 06:19:17,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-09 06:19:17,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-09 06:19:17,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-09 06:19:17,644 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-09 06:19:17,644 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-09 06:19:17,644 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-09 06:19:17,644 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2024-11-09 06:19:17,644 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2024-11-09 06:19:17,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 06:19:17,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:19:17,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-09 06:19:17,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-09 06:19:17,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-09 06:19:17,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 06:19:17,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-09 06:19:17,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-09 06:19:17,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-09 06:19:17,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 06:19:17,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 06:19:17,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 06:19:17,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 06:19:17,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:19:17,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:19:17,884 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:19:17,886 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:19:19,579 INFO L? ?]: Removed 328 outVars from TransFormulas that were not future-live. [2024-11-09 06:19:19,580 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:19:19,611 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:19:19,611 INFO L316 CfgBuilder]: Removed 62 assume(true) statements. [2024-11-09 06:19:19,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:19:19 BoogieIcfgContainer [2024-11-09 06:19:19,612 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:19:19,618 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:19:19,619 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:19:19,622 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:19:19,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:19:16" (1/3) ... [2024-11-09 06:19:19,624 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d713dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:19:19, skipping insertion in model container [2024-11-09 06:19:19,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:19:17" (2/3) ... [2024-11-09 06:19:19,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d713dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:19:19, skipping insertion in model container [2024-11-09 06:19:19,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:19:19" (3/3) ... [2024-11-09 06:19:19,627 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test8-1.i [2024-11-09 06:19:19,644 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:19:19,645 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 06:19:19,728 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:19:19,741 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;@772279e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:19:19,742 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-09 06:19:19,753 INFO L276 IsEmpty]: Start isEmpty. Operand has 436 states, 410 states have (on average 1.6268292682926828) internal successors, (667), 427 states have internal predecessors, (667), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-09 06:19:19,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 06:19:19,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:19,762 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:19:19,763 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:19:19,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:19,770 INFO L85 PathProgramCache]: Analyzing trace with hash -351686983, now seen corresponding path program 1 times [2024-11-09 06:19:19,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:19:19,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749854080] [2024-11-09 06:19:19,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:19,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:19:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:20,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:19:20,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:19:20,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749854080] [2024-11-09 06:19:20,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749854080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:19:20,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:19:20,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:19:20,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952370747] [2024-11-09 06:19:20,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:19:20,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 06:19:20,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:19:20,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 06:19:20,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 06:19:20,064 INFO L87 Difference]: Start difference. First operand has 436 states, 410 states have (on average 1.6268292682926828) internal successors, (667), 427 states have internal predecessors, (667), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:20,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:20,161 INFO L93 Difference]: Finished difference Result 870 states and 1429 transitions. [2024-11-09 06:19:20,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 06:19:20,164 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-09 06:19:20,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:20,182 INFO L225 Difference]: With dead ends: 870 [2024-11-09 06:19:20,183 INFO L226 Difference]: Without dead ends: 432 [2024-11-09 06:19:20,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 06:19:20,197 INFO L432 NwaCegarLoop]: 639 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:20,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:19:20,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2024-11-09 06:19:20,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 432. [2024-11-09 06:19:20,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 407 states have (on average 1.461916461916462) internal successors, (595), 423 states have internal predecessors, (595), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-09 06:19:20,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 635 transitions. [2024-11-09 06:19:20,297 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 635 transitions. Word has length 9 [2024-11-09 06:19:20,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:20,298 INFO L471 AbstractCegarLoop]: Abstraction has 432 states and 635 transitions. [2024-11-09 06:19:20,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:20,299 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 635 transitions. [2024-11-09 06:19:20,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-09 06:19:20,304 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:20,305 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] [2024-11-09 06:19:20,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:19:20,305 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:19:20,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:20,306 INFO L85 PathProgramCache]: Analyzing trace with hash 559678017, now seen corresponding path program 1 times [2024-11-09 06:19:20,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:19:20,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970936344] [2024-11-09 06:19:20,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:20,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:19:20,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:20,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:19:20,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:19:20,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970936344] [2024-11-09 06:19:20,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970936344] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:19:20,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:19:20,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:19:20,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591093767] [2024-11-09 06:19:20,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:19:20,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:19:20,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:19:20,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:19:20,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:19:20,763 INFO L87 Difference]: Start difference. First operand 432 states and 635 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:20,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:20,944 INFO L93 Difference]: Finished difference Result 1045 states and 1537 transitions. [2024-11-09 06:19:20,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:19:20,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-09 06:19:20,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:20,951 INFO L225 Difference]: With dead ends: 1045 [2024-11-09 06:19:20,952 INFO L226 Difference]: Without dead ends: 817 [2024-11-09 06:19:20,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:19:20,957 INFO L432 NwaCegarLoop]: 616 mSDtfsCounter, 547 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 1840 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:20,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 1840 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:19:20,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2024-11-09 06:19:20,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 434. [2024-11-09 06:19:20,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 409 states have (on average 1.4596577017114913) internal successors, (597), 425 states have internal predecessors, (597), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-09 06:19:20,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 637 transitions. [2024-11-09 06:19:21,000 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 637 transitions. Word has length 64 [2024-11-09 06:19:21,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:21,000 INFO L471 AbstractCegarLoop]: Abstraction has 434 states and 637 transitions. [2024-11-09 06:19:21,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:21,001 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 637 transitions. [2024-11-09 06:19:21,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-09 06:19:21,004 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:21,004 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:19:21,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 06:19:21,004 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:19:21,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:21,005 INFO L85 PathProgramCache]: Analyzing trace with hash 616256236, now seen corresponding path program 1 times [2024-11-09 06:19:21,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:19:21,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966003440] [2024-11-09 06:19:21,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:21,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:19:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:21,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:19:21,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:19:21,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966003440] [2024-11-09 06:19:21,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966003440] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:19:21,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:19:21,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:19:21,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477471836] [2024-11-09 06:19:21,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:19:21,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:19:21,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:19:21,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:19:21,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:19:21,403 INFO L87 Difference]: Start difference. First operand 434 states and 637 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:21,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:21,503 INFO L93 Difference]: Finished difference Result 822 states and 1204 transitions. [2024-11-09 06:19:21,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:19:21,504 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-11-09 06:19:21,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:21,507 INFO L225 Difference]: With dead ends: 822 [2024-11-09 06:19:21,507 INFO L226 Difference]: Without dead ends: 392 [2024-11-09 06:19:21,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:19:21,510 INFO L432 NwaCegarLoop]: 533 mSDtfsCounter, 30 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:21,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1580 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:19:21,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-11-09 06:19:21,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2024-11-09 06:19:21,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 367 states have (on average 1.4168937329700273) internal successors, (520), 383 states have internal predecessors, (520), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-09 06:19:21,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 560 transitions. [2024-11-09 06:19:21,526 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 560 transitions. Word has length 85 [2024-11-09 06:19:21,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:21,527 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 560 transitions. [2024-11-09 06:19:21,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:21,527 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 560 transitions. [2024-11-09 06:19:21,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-09 06:19:21,530 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:21,530 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:19:21,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 06:19:21,530 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:19:21,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:21,531 INFO L85 PathProgramCache]: Analyzing trace with hash 772689888, now seen corresponding path program 1 times [2024-11-09 06:19:21,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:19:21,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542728981] [2024-11-09 06:19:21,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:21,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:19:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:21,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:19:21,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:19:21,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542728981] [2024-11-09 06:19:21,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542728981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:19:21,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:19:21,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:19:21,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498916550] [2024-11-09 06:19:21,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:19:21,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:19:21,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:19:21,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:19:21,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:19:21,749 INFO L87 Difference]: Start difference. First operand 392 states and 560 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:21,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:21,899 INFO L93 Difference]: Finished difference Result 1032 states and 1478 transitions. [2024-11-09 06:19:21,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:19:21,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-11-09 06:19:21,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:21,904 INFO L225 Difference]: With dead ends: 1032 [2024-11-09 06:19:21,904 INFO L226 Difference]: Without dead ends: 644 [2024-11-09 06:19:21,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:19:21,906 INFO L432 NwaCegarLoop]: 740 mSDtfsCounter, 295 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:21,907 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 1269 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:19:21,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2024-11-09 06:19:21,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 641. [2024-11-09 06:19:21,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 615 states have (on average 1.424390243902439) internal successors, (876), 631 states have internal predecessors, (876), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-09 06:19:21,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 918 transitions. [2024-11-09 06:19:21,940 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 918 transitions. Word has length 85 [2024-11-09 06:19:21,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:21,941 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 918 transitions. [2024-11-09 06:19:21,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:19:21,941 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 918 transitions. [2024-11-09 06:19:21,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-09 06:19:21,944 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:21,944 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] [2024-11-09 06:19:21,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 06:19:21,945 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:19:21,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:21,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1168982230, now seen corresponding path program 1 times [2024-11-09 06:19:21,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:19:21,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267593618] [2024-11-09 06:19:21,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:21,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:19:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:22,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-09 06:19:22,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:22,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-09 06:19:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:22,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:19:22,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:19:22,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267593618] [2024-11-09 06:19:22,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267593618] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:19:22,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648038387] [2024-11-09 06:19:22,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:22,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:19:22,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:19:22,611 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:19:22,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:19:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:23,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 06:19:23,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:19:23,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 06:19:23,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2024-11-09 06:19:24,200 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:19:24,200 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:19:24,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648038387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:19:24,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:19:24,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2024-11-09 06:19:24,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333601297] [2024-11-09 06:19:24,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:19:24,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 06:19:24,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:19:24,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 06:19:24,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-09 06:19:24,208 INFO L87 Difference]: Start difference. First operand 641 states and 918 transitions. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:19:26,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:26,273 INFO L93 Difference]: Finished difference Result 1537 states and 2203 transitions. [2024-11-09 06:19:26,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 06:19:26,274 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 100 [2024-11-09 06:19:26,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:26,279 INFO L225 Difference]: With dead ends: 1537 [2024-11-09 06:19:26,279 INFO L226 Difference]: Without dead ends: 940 [2024-11-09 06:19:26,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2024-11-09 06:19:26,283 INFO L432 NwaCegarLoop]: 534 mSDtfsCounter, 588 mSDsluCounter, 3164 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 3698 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:26,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 3698 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 06:19:26,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2024-11-09 06:19:26,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 641. [2024-11-09 06:19:26,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 615 states have (on average 1.4227642276422765) internal successors, (875), 631 states have internal predecessors, (875), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-09 06:19:26,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 917 transitions. [2024-11-09 06:19:26,317 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 917 transitions. Word has length 100 [2024-11-09 06:19:26,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:26,319 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 917 transitions. [2024-11-09 06:19:26,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:19:26,320 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 917 transitions. [2024-11-09 06:19:26,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-09 06:19:26,321 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:26,322 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] [2024-11-09 06:19:26,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 06:19:26,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:19:26,524 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:19:26,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:26,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1907265882, now seen corresponding path program 1 times [2024-11-09 06:19:26,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:19:26,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510258875] [2024-11-09 06:19:26,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:26,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:19:26,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:27,040 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-09 06:19:27,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:27,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-09 06:19:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:27,077 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:19:27,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:19:27,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510258875] [2024-11-09 06:19:27,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510258875] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:19:27,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442393146] [2024-11-09 06:19:27,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:27,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:19:27,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:19:27,081 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:19:27,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 06:19:27,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:27,625 INFO L255 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 06:19:27,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:19:27,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 06:19:27,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2024-11-09 06:19:28,667 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:19:28,667 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:19:28,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442393146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:19:28,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:19:28,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [5] total 15 [2024-11-09 06:19:28,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839075892] [2024-11-09 06:19:28,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:19:28,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 06:19:28,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:19:28,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 06:19:28,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-09 06:19:28,671 INFO L87 Difference]: Start difference. First operand 641 states and 917 transitions. Second operand has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:19:30,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:30,335 INFO L93 Difference]: Finished difference Result 1552 states and 2223 transitions. [2024-11-09 06:19:30,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 06:19:30,335 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 101 [2024-11-09 06:19:30,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:30,340 INFO L225 Difference]: With dead ends: 1552 [2024-11-09 06:19:30,340 INFO L226 Difference]: Without dead ends: 960 [2024-11-09 06:19:30,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2024-11-09 06:19:30,343 INFO L432 NwaCegarLoop]: 572 mSDtfsCounter, 670 mSDsluCounter, 2517 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 3089 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:30,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 3089 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 06:19:30,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2024-11-09 06:19:30,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 657. [2024-11-09 06:19:30,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 631 states have (on average 1.4183835182250397) internal successors, (895), 647 states have internal predecessors, (895), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-09 06:19:30,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 937 transitions. [2024-11-09 06:19:30,370 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 937 transitions. Word has length 101 [2024-11-09 06:19:30,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:30,371 INFO L471 AbstractCegarLoop]: Abstraction has 657 states and 937 transitions. [2024-11-09 06:19:30,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:19:30,371 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 937 transitions. [2024-11-09 06:19:30,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-09 06:19:30,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:30,373 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] [2024-11-09 06:19:30,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 06:19:30,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 06:19:30,575 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:19:30,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:30,575 INFO L85 PathProgramCache]: Analyzing trace with hash 281528894, now seen corresponding path program 1 times [2024-11-09 06:19:30,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:19:30,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587528155] [2024-11-09 06:19:30,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:30,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:19:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:30,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-09 06:19:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:30,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-09 06:19:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:30,975 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:19:30,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:19:30,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587528155] [2024-11-09 06:19:30,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587528155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:19:30,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:19:30,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 06:19:30,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879213404] [2024-11-09 06:19:30,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:19:30,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:19:30,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:19:30,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:19:30,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:19:30,983 INFO L87 Difference]: Start difference. First operand 657 states and 937 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:19:31,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:31,812 INFO L93 Difference]: Finished difference Result 1269 states and 1825 transitions. [2024-11-09 06:19:31,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 06:19:31,813 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 102 [2024-11-09 06:19:31,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:31,819 INFO L225 Difference]: With dead ends: 1269 [2024-11-09 06:19:31,819 INFO L226 Difference]: Without dead ends: 670 [2024-11-09 06:19:31,821 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 [2024-11-09 06:19:31,822 INFO L432 NwaCegarLoop]: 462 mSDtfsCounter, 70 mSDsluCounter, 2365 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 2827 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:31,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 2827 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 06:19:31,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2024-11-09 06:19:31,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 665. [2024-11-09 06:19:31,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 639 states have (on average 1.4162754303599374) internal successors, (905), 655 states have internal predecessors, (905), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-09 06:19:31,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 947 transitions. [2024-11-09 06:19:31,848 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 947 transitions. Word has length 102 [2024-11-09 06:19:31,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:31,850 INFO L471 AbstractCegarLoop]: Abstraction has 665 states and 947 transitions. [2024-11-09 06:19:31,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:19:31,850 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 947 transitions. [2024-11-09 06:19:31,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-09 06:19:31,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:31,851 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] [2024-11-09 06:19:31,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 06:19:31,852 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:19:31,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:31,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1195725371, now seen corresponding path program 1 times [2024-11-09 06:19:31,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:19:31,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826023693] [2024-11-09 06:19:31,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:31,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:19:31,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:32,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-09 06:19:32,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:32,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-09 06:19:32,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:32,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:19:32,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:19:32,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826023693] [2024-11-09 06:19:32,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826023693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:19:32,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:19:32,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 06:19:32,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247688482] [2024-11-09 06:19:32,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:19:32,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:19:32,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:19:32,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:19:32,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:19:32,227 INFO L87 Difference]: Start difference. First operand 665 states and 947 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:19:32,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:32,893 INFO L93 Difference]: Finished difference Result 1284 states and 1845 transitions. [2024-11-09 06:19:32,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:19:32,894 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 102 [2024-11-09 06:19:32,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:32,898 INFO L225 Difference]: With dead ends: 1284 [2024-11-09 06:19:32,898 INFO L226 Difference]: Without dead ends: 674 [2024-11-09 06:19:32,900 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 [2024-11-09 06:19:32,900 INFO L432 NwaCegarLoop]: 474 mSDtfsCounter, 65 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:32,901 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 2080 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 06:19:32,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2024-11-09 06:19:32,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 671. [2024-11-09 06:19:32,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 645 states have (on average 1.4124031007751938) internal successors, (911), 661 states have internal predecessors, (911), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-09 06:19:32,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 953 transitions. [2024-11-09 06:19:32,926 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 953 transitions. Word has length 102 [2024-11-09 06:19:32,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:32,926 INFO L471 AbstractCegarLoop]: Abstraction has 671 states and 953 transitions. [2024-11-09 06:19:32,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:19:32,928 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 953 transitions. [2024-11-09 06:19:32,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-09 06:19:32,929 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:32,929 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] [2024-11-09 06:19:32,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 06:19:32,930 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:19:32,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:32,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1344710638, now seen corresponding path program 1 times [2024-11-09 06:19:32,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:19:32,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986185104] [2024-11-09 06:19:32,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:32,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:19:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:33,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-09 06:19:33,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:33,294 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-09 06:19:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:33,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:19:33,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:19:33,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986185104] [2024-11-09 06:19:33,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986185104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:19:33,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28704735] [2024-11-09 06:19:33,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:33,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:19:33,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:19:33,303 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:19:33,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 06:19:33,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:33,658 INFO L255 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 06:19:33,665 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:19:33,761 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:19:33,762 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:19:33,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28704735] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:19:33,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:19:33,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2024-11-09 06:19:33,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007347162] [2024-11-09 06:19:33,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:19:33,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:19:33,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:19:33,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:19:33,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:19:33,765 INFO L87 Difference]: Start difference. First operand 671 states and 953 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:19:34,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:34,130 INFO L93 Difference]: Finished difference Result 1297 states and 1856 transitions. [2024-11-09 06:19:34,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 06:19:34,131 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 103 [2024-11-09 06:19:34,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:34,135 INFO L225 Difference]: With dead ends: 1297 [2024-11-09 06:19:34,136 INFO L226 Difference]: Without dead ends: 677 [2024-11-09 06:19:34,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-09 06:19:34,140 INFO L432 NwaCegarLoop]: 533 mSDtfsCounter, 43 mSDsluCounter, 2361 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 2894 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:34,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 2894 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:19:34,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2024-11-09 06:19:34,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 659. [2024-11-09 06:19:34,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 633 states have (on average 1.410742496050553) internal successors, (893), 649 states have internal predecessors, (893), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-09 06:19:34,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 935 transitions. [2024-11-09 06:19:34,173 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 935 transitions. Word has length 103 [2024-11-09 06:19:34,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:34,174 INFO L471 AbstractCegarLoop]: Abstraction has 659 states and 935 transitions. [2024-11-09 06:19:34,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:19:34,174 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 935 transitions. [2024-11-09 06:19:34,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-09 06:19:34,176 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:34,176 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] [2024-11-09 06:19:34,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 06:19:34,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:19:34,378 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:19:34,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:34,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1849641193, now seen corresponding path program 1 times [2024-11-09 06:19:34,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:19:34,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020848653] [2024-11-09 06:19:34,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:34,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:19:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:34,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-09 06:19:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:34,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-09 06:19:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:34,858 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:19:34,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:19:34,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020848653] [2024-11-09 06:19:34,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020848653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:19:34,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302422918] [2024-11-09 06:19:34,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:34,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:19:34,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:19:34,863 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:19:34,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 06:19:35,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:35,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 06:19:35,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:19:35,512 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:19:35,512 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:19:35,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302422918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:19:35,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:19:35,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2024-11-09 06:19:35,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310614010] [2024-11-09 06:19:35,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:19:35,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:19:35,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:19:35,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:19:35,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:19:35,514 INFO L87 Difference]: Start difference. First operand 659 states and 935 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:19:35,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:35,560 INFO L93 Difference]: Finished difference Result 1221 states and 1746 transitions. [2024-11-09 06:19:35,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:19:35,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 103 [2024-11-09 06:19:35,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:35,565 INFO L225 Difference]: With dead ends: 1221 [2024-11-09 06:19:35,565 INFO L226 Difference]: Without dead ends: 662 [2024-11-09 06:19:35,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:19:35,568 INFO L432 NwaCegarLoop]: 548 mSDtfsCounter, 0 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:35,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1640 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:19:35,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2024-11-09 06:19:35,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2024-11-09 06:19:35,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 635 states have (on average 1.411023622047244) internal successors, (896), 652 states have internal predecessors, (896), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-09 06:19:35,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 939 transitions. [2024-11-09 06:19:35,599 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 939 transitions. Word has length 103 [2024-11-09 06:19:35,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:35,600 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 939 transitions. [2024-11-09 06:19:35,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:19:35,600 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 939 transitions. [2024-11-09 06:19:35,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-09 06:19:35,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:35,603 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:19:35,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 06:19:35,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:19:35,804 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:19:35,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:35,805 INFO L85 PathProgramCache]: Analyzing trace with hash -602232331, now seen corresponding path program 1 times [2024-11-09 06:19:35,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:19:35,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780293117] [2024-11-09 06:19:35,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:35,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:19:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:36,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-09 06:19:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:36,398 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-09 06:19:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:36,406 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:19:36,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:19:36,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780293117] [2024-11-09 06:19:36,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780293117] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:19:36,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751098908] [2024-11-09 06:19:36,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:36,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:19:36,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:19:36,409 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:19:36,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 06:19:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:36,867 INFO L255 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 06:19:36,871 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:19:36,909 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:19:36,910 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:19:37,052 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:19:37,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751098908] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:19:37,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:19:37,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-09 06:19:37,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930969541] [2024-11-09 06:19:37,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:19:37,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 06:19:37,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:19:37,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 06:19:37,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-09 06:19:37,055 INFO L87 Difference]: Start difference. First operand 662 states and 939 transitions. Second operand has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 06:19:37,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:37,606 INFO L93 Difference]: Finished difference Result 1235 states and 1767 transitions. [2024-11-09 06:19:37,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 06:19:37,607 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 105 [2024-11-09 06:19:37,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:37,610 INFO L225 Difference]: With dead ends: 1235 [2024-11-09 06:19:37,611 INFO L226 Difference]: Without dead ends: 671 [2024-11-09 06:19:37,612 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2024-11-09 06:19:37,613 INFO L432 NwaCegarLoop]: 481 mSDtfsCounter, 61 mSDsluCounter, 1361 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1842 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:37,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 1842 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 06:19:37,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2024-11-09 06:19:37,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 671. [2024-11-09 06:19:37,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 643 states have (on average 1.412130637636081) internal successors, (908), 660 states have internal predecessors, (908), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-09 06:19:37,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 951 transitions. [2024-11-09 06:19:37,639 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 951 transitions. Word has length 105 [2024-11-09 06:19:37,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:37,640 INFO L471 AbstractCegarLoop]: Abstraction has 671 states and 951 transitions. [2024-11-09 06:19:37,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.181818181818182) internal successors, (112), 10 states have internal predecessors, (112), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 06:19:37,640 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 951 transitions. [2024-11-09 06:19:37,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-09 06:19:37,641 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:37,642 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:19:37,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 06:19:37,845 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,SelfDestructingSolverStorable10 [2024-11-09 06:19:37,846 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:19:37,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:37,847 INFO L85 PathProgramCache]: Analyzing trace with hash 16608343, now seen corresponding path program 2 times [2024-11-09 06:19:37,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:19:37,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117600502] [2024-11-09 06:19:37,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:37,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:19:38,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:38,286 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-09 06:19:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:38,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-09 06:19:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:38,507 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:19:38,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:19:38,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117600502] [2024-11-09 06:19:38,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117600502] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:19:38,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576743154] [2024-11-09 06:19:38,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 06:19:38,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:19:38,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:19:38,510 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:19:38,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 06:19:38,951 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 06:19:38,951 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:19:38,957 INFO L255 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 06:19:38,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:19:51,603 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-09 06:19:51,604 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:19:51,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576743154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:19:51,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:19:51,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-09 06:19:51,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046555551] [2024-11-09 06:19:51,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:19:51,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:19:51,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:19:51,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:19:51,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-09 06:19:51,607 INFO L87 Difference]: Start difference. First operand 671 states and 951 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:19:57,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 06:19:57,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:57,698 INFO L93 Difference]: Finished difference Result 1289 states and 1843 transitions. [2024-11-09 06:19:57,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:19:57,699 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 109 [2024-11-09 06:19:57,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:57,703 INFO L225 Difference]: With dead ends: 1289 [2024-11-09 06:19:57,703 INFO L226 Difference]: Without dead ends: 681 [2024-11-09 06:19:57,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-09 06:19:57,706 INFO L432 NwaCegarLoop]: 537 mSDtfsCounter, 12 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2873 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:57,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2873 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 423 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2024-11-09 06:19:57,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2024-11-09 06:19:57,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 671. [2024-11-09 06:19:57,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 643 states have (on average 1.412130637636081) internal successors, (908), 660 states have internal predecessors, (908), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-09 06:19:57,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 951 transitions. [2024-11-09 06:19:57,733 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 951 transitions. Word has length 109 [2024-11-09 06:19:57,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:57,733 INFO L471 AbstractCegarLoop]: Abstraction has 671 states and 951 transitions. [2024-11-09 06:19:57,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:19:57,734 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 951 transitions. [2024-11-09 06:19:57,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-09 06:19:57,735 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:57,735 INFO L215 NwaCegarLoop]: trace histogram [6, 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] [2024-11-09 06:19:57,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 06:19:57,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:19:57,937 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:19:57,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:57,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1361315769, now seen corresponding path program 1 times [2024-11-09 06:19:57,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:19:57,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791651429] [2024-11-09 06:19:57,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:57,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:19:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:58,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-09 06:19:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:58,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-09 06:19:58,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:19:58,596 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-09 06:19:58,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:19:58,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791651429] [2024-11-09 06:19:58,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791651429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:19:58,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:19:58,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-09 06:19:58,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060912356] [2024-11-09 06:19:58,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:19:58,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 06:19:58,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:19:58,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 06:19:58,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-09 06:19:58,599 INFO L87 Difference]: Start difference. First operand 671 states and 951 transitions. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:19:59,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:19:59,830 INFO L93 Difference]: Finished difference Result 1311 states and 1872 transitions. [2024-11-09 06:19:59,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 06:19:59,830 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 111 [2024-11-09 06:19:59,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:19:59,834 INFO L225 Difference]: With dead ends: 1311 [2024-11-09 06:19:59,835 INFO L226 Difference]: Without dead ends: 703 [2024-11-09 06:19:59,836 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 [2024-11-09 06:19:59,837 INFO L432 NwaCegarLoop]: 469 mSDtfsCounter, 82 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 3312 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:19:59,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 3312 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 06:19:59,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2024-11-09 06:19:59,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 691. [2024-11-09 06:19:59,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 663 states have (on average 1.405731523378582) internal successors, (932), 680 states have internal predecessors, (932), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-09 06:19:59,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 975 transitions. [2024-11-09 06:19:59,860 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 975 transitions. Word has length 111 [2024-11-09 06:19:59,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:19:59,861 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 975 transitions. [2024-11-09 06:19:59,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:19:59,861 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 975 transitions. [2024-11-09 06:19:59,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-09 06:19:59,862 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:19:59,862 INFO L215 NwaCegarLoop]: trace histogram [6, 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] [2024-11-09 06:19:59,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 06:19:59,863 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:19:59,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:19:59,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1923436587, now seen corresponding path program 1 times [2024-11-09 06:19:59,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:19:59,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652386605] [2024-11-09 06:19:59,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:19:59,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:20:00,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:00,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-09 06:20:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:00,582 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-09 06:20:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:00,596 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:20:00,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:20:00,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652386605] [2024-11-09 06:20:00,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652386605] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:20:00,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758982383] [2024-11-09 06:20:00,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:00,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:20:00,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:20:00,605 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:20:00,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 06:20:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:01,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 06:20:01,191 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:20:02,128 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-09 06:20:02,128 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:20:02,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758982383] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:20:02,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:20:02,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2024-11-09 06:20:02,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880760188] [2024-11-09 06:20:02,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:20:02,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 06:20:02,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:20:02,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 06:20:02,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2024-11-09 06:20:02,130 INFO L87 Difference]: Start difference. First operand 691 states and 975 transitions. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:20:04,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:20:04,858 INFO L93 Difference]: Finished difference Result 1319 states and 1874 transitions. [2024-11-09 06:20:04,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:20:04,859 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 111 [2024-11-09 06:20:04,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:20:04,863 INFO L225 Difference]: With dead ends: 1319 [2024-11-09 06:20:04,864 INFO L226 Difference]: Without dead ends: 701 [2024-11-09 06:20:04,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2024-11-09 06:20:04,866 INFO L432 NwaCegarLoop]: 536 mSDtfsCounter, 11 mSDsluCounter, 4218 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4754 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-09 06:20:04,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 4754 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-09 06:20:04,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2024-11-09 06:20:04,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 697. [2024-11-09 06:20:04,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 669 states have (on average 1.4020926756352765) internal successors, (938), 686 states have internal predecessors, (938), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-09 06:20:04,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 981 transitions. [2024-11-09 06:20:04,892 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 981 transitions. Word has length 111 [2024-11-09 06:20:04,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:20:04,892 INFO L471 AbstractCegarLoop]: Abstraction has 697 states and 981 transitions. [2024-11-09 06:20:04,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:20:04,892 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 981 transitions. [2024-11-09 06:20:04,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-09 06:20:04,893 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:20:04,893 INFO L215 NwaCegarLoop]: trace histogram [6, 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] [2024-11-09 06:20:04,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 06:20:05,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:20:05,095 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:20:05,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:20:05,095 INFO L85 PathProgramCache]: Analyzing trace with hash 308674738, now seen corresponding path program 1 times [2024-11-09 06:20:05,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:20:05,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281851215] [2024-11-09 06:20:05,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:05,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:20:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:05,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-09 06:20:05,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:05,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-09 06:20:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:05,686 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:20:05,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:20:05,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281851215] [2024-11-09 06:20:05,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281851215] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:20:05,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483213573] [2024-11-09 06:20:05,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:05,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:20:05,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:20:05,688 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:20:05,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 06:20:06,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:06,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 06:20:06,216 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:20:06,349 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 06:20:06,350 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:20:06,618 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:20:06,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483213573] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:20:06,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:20:06,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2024-11-09 06:20:06,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463287374] [2024-11-09 06:20:06,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:20:06,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 06:20:06,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:20:06,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 06:20:06,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2024-11-09 06:20:06,622 INFO L87 Difference]: Start difference. First operand 697 states and 981 transitions. Second operand has 21 states, 21 states have (on average 5.9523809523809526) internal successors, (125), 20 states have internal predecessors, (125), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 06:20:08,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:20:08,403 INFO L93 Difference]: Finished difference Result 1298 states and 1845 transitions. [2024-11-09 06:20:08,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 06:20:08,404 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.9523809523809526) internal successors, (125), 20 states have internal predecessors, (125), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 111 [2024-11-09 06:20:08,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:20:08,410 INFO L225 Difference]: With dead ends: 1298 [2024-11-09 06:20:08,411 INFO L226 Difference]: Without dead ends: 708 [2024-11-09 06:20:08,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2024-11-09 06:20:08,415 INFO L432 NwaCegarLoop]: 470 mSDtfsCounter, 87 mSDsluCounter, 3650 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 4120 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:20:08,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 4120 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-09 06:20:08,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2024-11-09 06:20:08,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 706. [2024-11-09 06:20:08,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 678 states have (on average 1.396755162241888) internal successors, (947), 695 states have internal predecessors, (947), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-09 06:20:08,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 990 transitions. [2024-11-09 06:20:08,445 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 990 transitions. Word has length 111 [2024-11-09 06:20:08,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:20:08,447 INFO L471 AbstractCegarLoop]: Abstraction has 706 states and 990 transitions. [2024-11-09 06:20:08,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.9523809523809526) internal successors, (125), 20 states have internal predecessors, (125), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 06:20:08,448 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 990 transitions. [2024-11-09 06:20:08,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-09 06:20:08,449 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:20:08,449 INFO L215 NwaCegarLoop]: trace histogram [15, 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] [2024-11-09 06:20:08,474 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 06:20:08,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 06:20:08,654 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:20:08,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:20:08,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1487256258, now seen corresponding path program 2 times [2024-11-09 06:20:08,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:20:08,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172253235] [2024-11-09 06:20:08,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:08,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:20:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:09,278 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-09 06:20:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:09,659 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-09 06:20:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:09,674 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 06:20:09,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:20:09,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172253235] [2024-11-09 06:20:09,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172253235] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:20:09,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555116611] [2024-11-09 06:20:09,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 06:20:09,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:20:09,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:20:09,680 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:20:09,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 06:20:10,142 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 06:20:10,142 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:20:10,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 06:20:10,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:20:10,432 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-11-09 06:20:10,432 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:20:10,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555116611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:20:10,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:20:10,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 20 [2024-11-09 06:20:10,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352643936] [2024-11-09 06:20:10,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:20:10,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:20:10,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:20:10,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:20:10,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2024-11-09 06:20:10,435 INFO L87 Difference]: Start difference. First operand 706 states and 990 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:20:10,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:20:10,857 INFO L93 Difference]: Finished difference Result 1346 states and 1906 transitions. [2024-11-09 06:20:10,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:20:10,858 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 120 [2024-11-09 06:20:10,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:20:10,862 INFO L225 Difference]: With dead ends: 1346 [2024-11-09 06:20:10,862 INFO L226 Difference]: Without dead ends: 716 [2024-11-09 06:20:10,864 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2024-11-09 06:20:10,866 INFO L432 NwaCegarLoop]: 537 mSDtfsCounter, 10 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2873 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:20:10,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2873 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 06:20:10,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2024-11-09 06:20:10,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 706. [2024-11-09 06:20:10,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 678 states have (on average 1.396755162241888) internal successors, (947), 695 states have internal predecessors, (947), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-09 06:20:10,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 990 transitions. [2024-11-09 06:20:10,900 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 990 transitions. Word has length 120 [2024-11-09 06:20:10,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:20:10,900 INFO L471 AbstractCegarLoop]: Abstraction has 706 states and 990 transitions. [2024-11-09 06:20:10,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:20:10,901 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 990 transitions. [2024-11-09 06:20:10,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-09 06:20:10,902 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:20:10,902 INFO L215 NwaCegarLoop]: trace histogram [15, 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] [2024-11-09 06:20:10,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 06:20:11,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 06:20:11,107 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:20:11,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:20:11,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1686910630, now seen corresponding path program 1 times [2024-11-09 06:20:11,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:20:11,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878511020] [2024-11-09 06:20:11,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:11,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:20:11,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:11,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-09 06:20:11,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:12,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-11-09 06:20:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:12,183 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 06:20:12,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:20:12,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878511020] [2024-11-09 06:20:12,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878511020] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:20:12,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284127876] [2024-11-09 06:20:12,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:20:12,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:20:12,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:20:12,185 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:20:12,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 06:20:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:20:12,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 147 conjuncts are in the unsatisfiable core [2024-11-09 06:20:12,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:20:12,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-09 06:20:13,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 06:20:13,050 INFO L349 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2024-11-09 06:20:13,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2024-11-09 06:20:13,061 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 13 treesize of output 9 [2024-11-09 06:20:13,158 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 22 treesize of output 10 [2024-11-09 06:20:13,163 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 9 treesize of output 3 [2024-11-09 06:20:13,502 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-09 06:20:13,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-09 06:20:13,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-09 06:20:17,991 INFO L224 Elim1Store]: Index analysis took 200 ms