./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_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 58fb5e591c63ebc056bfb6417ddf45efba9827c2f78526eb3c8a68d018ffd43a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 17:09:07,446 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 17:09:07,521 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 17:09:07,527 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 17:09:07,529 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 17:09:07,563 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 17:09:07,564 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 17:09:07,564 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 17:09:07,565 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 17:09:07,566 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 17:09:07,566 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 17:09:07,566 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 17:09:07,568 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 17:09:07,568 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 17:09:07,569 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 17:09:07,569 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 17:09:07,570 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 17:09:07,570 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 17:09:07,571 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 17:09:07,571 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 17:09:07,571 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 17:09:07,572 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 17:09:07,572 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 17:09:07,572 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 17:09:07,573 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 17:09:07,573 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 17:09:07,573 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 17:09:07,573 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 17:09:07,574 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 17:09:07,574 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 17:09:07,574 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 17:09:07,575 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 17:09:07,575 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 17:09:07,579 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 17:09:07,580 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 17:09:07,580 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 17:09:07,580 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 17:09:07,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 17:09:07,581 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 17:09:07,582 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 17:09:07,582 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 17:09:07,582 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 17:09:07,583 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58fb5e591c63ebc056bfb6417ddf45efba9827c2f78526eb3c8a68d018ffd43a [2024-11-22 17:09:07,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 17:09:07,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 17:09:07,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 17:09:07,880 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 17:09:07,881 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 17:09:07,882 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i [2024-11-22 17:09:09,341 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 17:09:09,630 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 17:09:09,632 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test8-1.i [2024-11-22 17:09:09,662 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36527c0bb/a57b058f01264b2889c7f092790f5032/FLAG9e975de67 [2024-11-22 17:09:09,914 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36527c0bb/a57b058f01264b2889c7f092790f5032 [2024-11-22 17:09:09,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 17:09:09,919 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 17:09:09,922 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 17:09:09,922 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 17:09:09,935 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 17:09:09,936 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 05:09:09" (1/1) ... [2024-11-22 17:09:09,939 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@632cc30b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:09:09, skipping insertion in model container [2024-11-22 17:09:09,939 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 05:09:09" (1/1) ... [2024-11-22 17:09:09,994 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 17:09:10,415 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_BER_test8-1.i[33021,33034] [2024-11-22 17:09:10,549 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_BER_test8-1.i[45234,45247] [2024-11-22 17:09:10,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 17:09:10,582 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 17:09:10,626 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_BER_test8-1.i[33021,33034] [2024-11-22 17:09:10,710 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_BER_test8-1.i[45234,45247] [2024-11-22 17:09:10,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 17:09:10,762 INFO L204 MainTranslator]: Completed translation [2024-11-22 17:09:10,762 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:09:10 WrapperNode [2024-11-22 17:09:10,763 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 17:09:10,764 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 17:09:10,765 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 17:09:10,765 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 17:09:10,770 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:09:10" (1/1) ... [2024-11-22 17:09:10,808 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:09:10" (1/1) ... [2024-11-22 17:09:10,887 INFO L138 Inliner]: procedures = 177, calls = 289, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1423 [2024-11-22 17:09:10,888 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 17:09:10,888 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 17:09:10,889 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 17:09:10,889 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 17:09:10,899 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:09:10" (1/1) ... [2024-11-22 17:09:10,899 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:09:10" (1/1) ... [2024-11-22 17:09:10,910 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:09:10" (1/1) ... [2024-11-22 17:09:10,994 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]. [2024-11-22 17:09:10,994 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:09:10" (1/1) ... [2024-11-22 17:09:10,995 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:09:10" (1/1) ... [2024-11-22 17:09:11,031 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:09:10" (1/1) ... [2024-11-22 17:09:11,042 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:09:10" (1/1) ... [2024-11-22 17:09:11,049 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:09:10" (1/1) ... [2024-11-22 17:09:11,060 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:09:10" (1/1) ... [2024-11-22 17:09:11,084 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 17:09:11,085 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 17:09:11,085 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 17:09:11,085 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 17:09:11,086 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:09:10" (1/1) ... [2024-11-22 17:09:11,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 17:09:11,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:09:11,120 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) [2024-11-22 17:09:11,126 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 [2024-11-22 17:09:11,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 17:09:11,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 17:09:11,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-22 17:09:11,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-22 17:09:11,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-22 17:09:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 17:09:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 17:09:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-22 17:09:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-22 17:09:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-22 17:09:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-22 17:09:11,172 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-22 17:09:11,172 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-22 17:09:11,172 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-22 17:09:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2024-11-22 17:09:11,172 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2024-11-22 17:09:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 17:09:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 17:09:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-22 17:09:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-22 17:09:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-22 17:09:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-22 17:09:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-22 17:09:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-22 17:09:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-22 17:09:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 17:09:11,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 17:09:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 17:09:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 17:09:11,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 17:09:11,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 17:09:11,413 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 17:09:11,416 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 17:09:12,971 INFO L? ?]: Removed 328 outVars from TransFormulas that were not future-live. [2024-11-22 17:09:12,971 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 17:09:12,995 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 17:09:12,995 INFO L316 CfgBuilder]: Removed 62 assume(true) statements. [2024-11-22 17:09:12,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 05:09:12 BoogieIcfgContainer [2024-11-22 17:09:12,996 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 17:09:12,998 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 17:09:12,998 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 17:09:13,003 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 17:09:13,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 05:09:09" (1/3) ... [2024-11-22 17:09:13,005 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f8b1fc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 05:09:13, skipping insertion in model container [2024-11-22 17:09:13,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:09:10" (2/3) ... [2024-11-22 17:09:13,005 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f8b1fc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 05:09:13, skipping insertion in model container [2024-11-22 17:09:13,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 05:09:12" (3/3) ... [2024-11-22 17:09:13,007 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test8-1.i [2024-11-22 17:09:13,024 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 17:09:13,024 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-22 17:09:13,109 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 17:09:13,118 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;@3f8896cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 17:09:13,118 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-22 17:09:13,128 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) [2024-11-22 17:09:13,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-22 17:09:13,135 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:09:13,135 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:09:13,136 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:09:13,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:09:13,143 INFO L85 PathProgramCache]: Analyzing trace with hash -351686983, now seen corresponding path program 1 times [2024-11-22 17:09:13,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:09:13,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590460580] [2024-11-22 17:09:13,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:09:13,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:09:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:09:13,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:09:13,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:09:13,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590460580] [2024-11-22 17:09:13,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590460580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:09:13,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:09:13,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 17:09:13,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739859909] [2024-11-22 17:09:13,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:09:13,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 17:09:13,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:09:13,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 17:09:13,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 17:09:13,519 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) [2024-11-22 17:09:13,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:09:13,589 INFO L93 Difference]: Finished difference Result 870 states and 1429 transitions. [2024-11-22 17:09:13,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 17:09:13,594 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 [2024-11-22 17:09:13,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:09:13,609 INFO L225 Difference]: With dead ends: 870 [2024-11-22 17:09:13,609 INFO L226 Difference]: Without dead ends: 432 [2024-11-22 17:09:13,615 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 [2024-11-22 17:09:13,618 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 [2024-11-22 17:09:13,619 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] [2024-11-22 17:09:13,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2024-11-22 17:09:13,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 432. [2024-11-22 17:09:13,682 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) [2024-11-22 17:09:13,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 635 transitions. [2024-11-22 17:09:13,688 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 635 transitions. Word has length 9 [2024-11-22 17:09:13,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:09:13,688 INFO L471 AbstractCegarLoop]: Abstraction has 432 states and 635 transitions. [2024-11-22 17:09:13,691 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) [2024-11-22 17:09:13,692 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 635 transitions. [2024-11-22 17:09:13,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-22 17:09:13,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:09:13,696 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] [2024-11-22 17:09:13,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 17:09:13,697 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:09:13,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:09:13,697 INFO L85 PathProgramCache]: Analyzing trace with hash 559678017, now seen corresponding path program 1 times [2024-11-22 17:09:13,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:09:13,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804835936] [2024-11-22 17:09:13,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:09:13,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:09:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:09:14,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:09:14,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:09:14,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804835936] [2024-11-22 17:09:14,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804835936] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:09:14,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:09:14,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 17:09:14,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452546587] [2024-11-22 17:09:14,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:09:14,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 17:09:14,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:09:14,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 17:09:14,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 17:09:14,203 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) [2024-11-22 17:09:14,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:09:14,403 INFO L93 Difference]: Finished difference Result 1045 states and 1537 transitions. [2024-11-22 17:09:14,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 17:09:14,407 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 [2024-11-22 17:09:14,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:09:14,415 INFO L225 Difference]: With dead ends: 1045 [2024-11-22 17:09:14,415 INFO L226 Difference]: Without dead ends: 817 [2024-11-22 17:09:14,416 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 [2024-11-22 17:09:14,418 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 [2024-11-22 17:09:14,419 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] [2024-11-22 17:09:14,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2024-11-22 17:09:14,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 434. [2024-11-22 17:09:14,469 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) [2024-11-22 17:09:14,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 637 transitions. [2024-11-22 17:09:14,474 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 637 transitions. Word has length 64 [2024-11-22 17:09:14,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:09:14,475 INFO L471 AbstractCegarLoop]: Abstraction has 434 states and 637 transitions. [2024-11-22 17:09:14,475 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) [2024-11-22 17:09:14,476 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 637 transitions. [2024-11-22 17:09:14,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-22 17:09:14,479 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:09:14,479 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] [2024-11-22 17:09:14,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 17:09:14,482 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:09:14,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:09:14,482 INFO L85 PathProgramCache]: Analyzing trace with hash 616256236, now seen corresponding path program 1 times [2024-11-22 17:09:14,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:09:14,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105752644] [2024-11-22 17:09:14,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:09:14,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:09:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:09:14,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:09:14,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:09:14,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105752644] [2024-11-22 17:09:14,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105752644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:09:14,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:09:14,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 17:09:14,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606254282] [2024-11-22 17:09:14,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:09:14,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 17:09:14,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:09:14,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 17:09:14,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 17:09:14,924 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) [2024-11-22 17:09:15,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:09:15,027 INFO L93 Difference]: Finished difference Result 822 states and 1204 transitions. [2024-11-22 17:09:15,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 17:09:15,028 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 [2024-11-22 17:09:15,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:09:15,031 INFO L225 Difference]: With dead ends: 822 [2024-11-22 17:09:15,032 INFO L226 Difference]: Without dead ends: 392 [2024-11-22 17:09:15,034 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 [2024-11-22 17:09:15,037 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 [2024-11-22 17:09:15,037 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] [2024-11-22 17:09:15,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-11-22 17:09:15,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2024-11-22 17:09:15,054 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) [2024-11-22 17:09:15,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 560 transitions. [2024-11-22 17:09:15,056 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 560 transitions. Word has length 85 [2024-11-22 17:09:15,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:09:15,057 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 560 transitions. [2024-11-22 17:09:15,057 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) [2024-11-22 17:09:15,057 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 560 transitions. [2024-11-22 17:09:15,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-22 17:09:15,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:09:15,062 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] [2024-11-22 17:09:15,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 17:09:15,063 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:09:15,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:09:15,063 INFO L85 PathProgramCache]: Analyzing trace with hash 772689888, now seen corresponding path program 1 times [2024-11-22 17:09:15,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:09:15,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845551821] [2024-11-22 17:09:15,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:09:15,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:09:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:09:15,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:09:15,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:09:15,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845551821] [2024-11-22 17:09:15,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845551821] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:09:15,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:09:15,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 17:09:15,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029208396] [2024-11-22 17:09:15,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:09:15,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 17:09:15,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:09:15,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 17:09:15,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 17:09:15,240 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) [2024-11-22 17:09:15,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:09:15,365 INFO L93 Difference]: Finished difference Result 1032 states and 1478 transitions. [2024-11-22 17:09:15,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 17:09:15,366 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 [2024-11-22 17:09:15,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:09:15,370 INFO L225 Difference]: With dead ends: 1032 [2024-11-22 17:09:15,370 INFO L226 Difference]: Without dead ends: 644 [2024-11-22 17:09:15,371 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 [2024-11-22 17:09:15,372 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 [2024-11-22 17:09:15,373 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] [2024-11-22 17:09:15,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2024-11-22 17:09:15,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 641. [2024-11-22 17:09:15,396 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) [2024-11-22 17:09:15,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 918 transitions. [2024-11-22 17:09:15,401 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 918 transitions. Word has length 85 [2024-11-22 17:09:15,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:09:15,403 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 918 transitions. [2024-11-22 17:09:15,403 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) [2024-11-22 17:09:15,403 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 918 transitions. [2024-11-22 17:09:15,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-22 17:09:15,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:09:15,409 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] [2024-11-22 17:09:15,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 17:09:15,410 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:09:15,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:09:15,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1168982230, now seen corresponding path program 1 times [2024-11-22 17:09:15,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:09:15,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932117388] [2024-11-22 17:09:15,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:09:15,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:09:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:09:15,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 17:09:15,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:09:15,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932117388] [2024-11-22 17:09:15,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932117388] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:09:15,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993680856] [2024-11-22 17:09:15,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:09:15,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:09:15,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:09:15,904 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) [2024-11-22 17:09:15,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 17:09:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:09:16,278 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-22 17:09:16,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:09:16,322 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 [2024-11-22 17:09:16,349 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 [2024-11-22 17:09:17,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 17:09:17,356 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 17:09:17,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993680856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:09:17,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 17:09:17,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4] total 13 [2024-11-22 17:09:17,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095250403] [2024-11-22 17:09:17,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:09:17,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 17:09:17,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:09:17,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 17:09:17,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-22 17:09:17,360 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) [2024-11-22 17:09:19,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:09:19,446 INFO L93 Difference]: Finished difference Result 1537 states and 2203 transitions. [2024-11-22 17:09:19,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 17:09:19,447 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 [2024-11-22 17:09:19,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:09:19,451 INFO L225 Difference]: With dead ends: 1537 [2024-11-22 17:09:19,452 INFO L226 Difference]: Without dead ends: 940 [2024-11-22 17:09:19,453 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2024-11-22 17:09:19,454 INFO L432 NwaCegarLoop]: 534 mSDtfsCounter, 588 mSDsluCounter, 3162 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 3696 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-22 17:09:19,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 3696 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-22 17:09:19,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2024-11-22 17:09:19,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 641. [2024-11-22 17:09:19,473 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) [2024-11-22 17:09:19,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 917 transitions. [2024-11-22 17:09:19,476 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 917 transitions. Word has length 100 [2024-11-22 17:09:19,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:09:19,477 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 917 transitions. [2024-11-22 17:09:19,477 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) [2024-11-22 17:09:19,477 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 917 transitions. [2024-11-22 17:09:19,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-22 17:09:19,478 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:09:19,479 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] [2024-11-22 17:09:19,490 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 17:09:19,679 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 [2024-11-22 17:09:19,679 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:09:19,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:09:19,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1907265882, now seen corresponding path program 1 times [2024-11-22 17:09:19,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:09:19,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331452670] [2024-11-22 17:09:19,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:09:19,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:09:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:09:20,121 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 17:09:20,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:09:20,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331452670] [2024-11-22 17:09:20,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331452670] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:09:20,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44509093] [2024-11-22 17:09:20,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:09:20,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:09:20,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:09:20,124 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) [2024-11-22 17:09:20,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 17:09:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:09:20,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-22 17:09:20,900 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:09:20,903 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 [2024-11-22 17:09:20,921 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 [2024-11-22 17:09:21,824 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 17:09:21,825 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 17:09:21,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44509093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:09:21,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 17:09:21,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [4] total 14 [2024-11-22 17:09:21,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114459749] [2024-11-22 17:09:21,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:09:21,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 17:09:21,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:09:21,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 17:09:21,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-11-22 17:09:21,828 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) [2024-11-22 17:09:24,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-22 17:09:24,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:09:24,876 INFO L93 Difference]: Finished difference Result 1552 states and 2223 transitions. [2024-11-22 17:09:24,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 17:09:24,876 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 [2024-11-22 17:09:24,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:09:24,881 INFO L225 Difference]: With dead ends: 1552 [2024-11-22 17:09:24,881 INFO L226 Difference]: Without dead ends: 960 [2024-11-22 17:09:24,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2024-11-22 17:09:24,884 INFO L432 NwaCegarLoop]: 572 mSDtfsCounter, 651 mSDsluCounter, 3940 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 4512 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-22 17:09:24,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 4512 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-22 17:09:24,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2024-11-22 17:09:24,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 657. [2024-11-22 17:09:24,913 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) [2024-11-22 17:09:24,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 937 transitions. [2024-11-22 17:09:24,916 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 937 transitions. Word has length 101 [2024-11-22 17:09:24,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:09:24,918 INFO L471 AbstractCegarLoop]: Abstraction has 657 states and 937 transitions. [2024-11-22 17:09:24,919 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) [2024-11-22 17:09:24,919 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 937 transitions. [2024-11-22 17:09:24,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-22 17:09:24,920 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:09:24,920 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] [2024-11-22 17:09:24,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 17:09:25,120 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 [2024-11-22 17:09:25,121 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:09:25,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:09:25,121 INFO L85 PathProgramCache]: Analyzing trace with hash 281528894, now seen corresponding path program 1 times [2024-11-22 17:09:25,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:09:25,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383389937] [2024-11-22 17:09:25,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:09:25,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:09:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:09:25,489 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 17:09:25,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:09:25,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383389937] [2024-11-22 17:09:25,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383389937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:09:25,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:09:25,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 17:09:25,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859098373] [2024-11-22 17:09:25,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:09:25,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 17:09:25,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:09:25,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 17:09:25,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 17:09:25,492 INFO L87 Difference]: Start difference. First operand 657 states and 937 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) 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) [2024-11-22 17:09:25,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:09:25,809 INFO L93 Difference]: Finished difference Result 1266 states and 1819 transitions. [2024-11-22 17:09:25,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 17:09:25,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) 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 [2024-11-22 17:09:25,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:09:25,813 INFO L225 Difference]: With dead ends: 1266 [2024-11-22 17:09:25,813 INFO L226 Difference]: Without dead ends: 667 [2024-11-22 17:09:25,814 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 17:09:25,815 INFO L432 NwaCegarLoop]: 531 mSDtfsCounter, 14 mSDsluCounter, 2335 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2866 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 17:09:25,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2866 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 17:09:25,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2024-11-22 17:09:25,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 665. [2024-11-22 17:09:25,833 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) [2024-11-22 17:09:25,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 947 transitions. [2024-11-22 17:09:25,835 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 947 transitions. Word has length 102 [2024-11-22 17:09:25,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:09:25,836 INFO L471 AbstractCegarLoop]: Abstraction has 665 states and 947 transitions. [2024-11-22 17:09:25,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) 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) [2024-11-22 17:09:25,836 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 947 transitions. [2024-11-22 17:09:25,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-22 17:09:25,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:09:25,837 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] [2024-11-22 17:09:25,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 17:09:25,837 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:09:25,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:09:25,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1195725371, now seen corresponding path program 1 times [2024-11-22 17:09:25,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:09:25,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421228358] [2024-11-22 17:09:25,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:09:25,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:09:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:09:26,249 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 17:09:26,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:09:26,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421228358] [2024-11-22 17:09:26,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421228358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:09:26,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:09:26,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 17:09:26,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365511315] [2024-11-22 17:09:26,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:09:26,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 17:09:26,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:09:26,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 17:09:26,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 17:09:26,254 INFO L87 Difference]: Start difference. First operand 665 states and 947 transitions. Second operand has 6 states, 6 states have (on average 15.5) 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) [2024-11-22 17:09:26,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:09:26,486 INFO L93 Difference]: Finished difference Result 1281 states and 1839 transitions. [2024-11-22 17:09:26,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 17:09:26,487 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) 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 [2024-11-22 17:09:26,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:09:26,490 INFO L225 Difference]: With dead ends: 1281 [2024-11-22 17:09:26,490 INFO L226 Difference]: Without dead ends: 671 [2024-11-22 17:09:26,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 17:09:26,492 INFO L432 NwaCegarLoop]: 543 mSDtfsCounter, 9 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1965 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 17:09:26,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1965 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 17:09:26,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2024-11-22 17:09:26,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 671. [2024-11-22 17:09:26,510 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) [2024-11-22 17:09:26,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 953 transitions. [2024-11-22 17:09:26,513 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 953 transitions. Word has length 102 [2024-11-22 17:09:26,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:09:26,513 INFO L471 AbstractCegarLoop]: Abstraction has 671 states and 953 transitions. [2024-11-22 17:09:26,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) 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) [2024-11-22 17:09:26,514 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 953 transitions. [2024-11-22 17:09:26,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-22 17:09:26,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:09:26,515 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] [2024-11-22 17:09:26,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 17:09:26,515 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:09:26,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:09:26,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1344710638, now seen corresponding path program 1 times [2024-11-22 17:09:26,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:09:26,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256494364] [2024-11-22 17:09:26,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:09:26,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:09:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:09:26,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 17:09:26,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:09:26,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256494364] [2024-11-22 17:09:26,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256494364] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:09:26,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751792839] [2024-11-22 17:09:26,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:09:26,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:09:26,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:09:26,807 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) [2024-11-22 17:09:26,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 17:09:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:09:27,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-22 17:09:27,139 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:09:27,235 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 17:09:27,236 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 17:09:27,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751792839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:09:27,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 17:09:27,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-22 17:09:27,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303027030] [2024-11-22 17:09:27,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:09:27,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 17:09:27,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:09:27,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 17:09:27,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-22 17:09:27,239 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) [2024-11-22 17:09:27,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:09:27,550 INFO L93 Difference]: Finished difference Result 1297 states and 1856 transitions. [2024-11-22 17:09:27,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 17:09:27,550 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 [2024-11-22 17:09:27,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:09:27,554 INFO L225 Difference]: With dead ends: 1297 [2024-11-22 17:09:27,554 INFO L226 Difference]: Without dead ends: 677 [2024-11-22 17:09:27,555 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-22 17:09:27,556 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 [2024-11-22 17:09:27,556 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] [2024-11-22 17:09:27,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2024-11-22 17:09:27,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 659. [2024-11-22 17:09:27,575 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) [2024-11-22 17:09:27,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 935 transitions. [2024-11-22 17:09:27,577 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 935 transitions. Word has length 103 [2024-11-22 17:09:27,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:09:27,578 INFO L471 AbstractCegarLoop]: Abstraction has 659 states and 935 transitions. [2024-11-22 17:09:27,578 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) [2024-11-22 17:09:27,578 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 935 transitions. [2024-11-22 17:09:27,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-22 17:09:27,579 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:09:27,579 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] [2024-11-22 17:09:27,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 17:09:27,780 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 [2024-11-22 17:09:27,780 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:09:27,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:09:27,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1849641193, now seen corresponding path program 1 times [2024-11-22 17:09:27,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:09:27,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986513981] [2024-11-22 17:09:27,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:09:27,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:09:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:09:28,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 17:09:28,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:09:28,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986513981] [2024-11-22 17:09:28,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986513981] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:09:28,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155220621] [2024-11-22 17:09:28,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:09:28,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:09:28,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:09:28,192 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) [2024-11-22 17:09:28,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 17:09:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:09:28,666 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 17:09:28,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:09:42,982 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 17:09:42,982 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 17:09:42,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155220621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:09:42,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 17:09:42,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2024-11-22 17:09:42,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709131592] [2024-11-22 17:09:42,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:09:42,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 17:09:42,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:09:42,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 17:09:42,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-22 17:09:42,984 INFO L87 Difference]: Start difference. First operand 659 states and 935 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) [2024-11-22 17:09:47,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-22 17:09:51,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-22 17:09:56,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-22 17:10:00,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-22 17:10:04,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-22 17:10:06,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-22 17:10:06,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:10:06,852 INFO L93 Difference]: Finished difference Result 1265 states and 1811 transitions. [2024-11-22 17:10:06,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 17:10:06,853 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 [2024-11-22 17:10:06,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:10:06,856 INFO L225 Difference]: With dead ends: 1265 [2024-11-22 17:10:06,856 INFO L226 Difference]: Without dead ends: 669 [2024-11-22 17:10:06,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-22 17:10:06,858 INFO L432 NwaCegarLoop]: 537 mSDtfsCounter, 12 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2873 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.8s IncrementalHoareTripleChecker+Time [2024-11-22 17:10:06,858 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2873 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 423 Invalid, 5 Unknown, 0 Unchecked, 23.8s Time] [2024-11-22 17:10:06,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2024-11-22 17:10:06,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 659. [2024-11-22 17:10:06,875 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) [2024-11-22 17:10:06,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 935 transitions. [2024-11-22 17:10:06,878 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 935 transitions. Word has length 103 [2024-11-22 17:10:06,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:10:06,878 INFO L471 AbstractCegarLoop]: Abstraction has 659 states and 935 transitions. [2024-11-22 17:10:06,879 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) [2024-11-22 17:10:06,879 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 935 transitions. [2024-11-22 17:10:06,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-22 17:10:06,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:10:06,880 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:10:06,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 17:10:07,080 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 [2024-11-22 17:10:07,081 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:10:07,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:10:07,081 INFO L85 PathProgramCache]: Analyzing trace with hash 2092103431, now seen corresponding path program 1 times [2024-11-22 17:10:07,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:10:07,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839410031] [2024-11-22 17:10:07,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:10:07,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:10:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:10:07,585 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 17:10:07,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:10:07,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839410031] [2024-11-22 17:10:07,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839410031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:10:07,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:10:07,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 17:10:07,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370078170] [2024-11-22 17:10:07,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:10:07,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 17:10:07,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:10:07,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 17:10:07,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-22 17:10:07,588 INFO L87 Difference]: Start difference. First operand 659 states and 935 transitions. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 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) [2024-11-22 17:10:08,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:10:08,156 INFO L93 Difference]: Finished difference Result 1287 states and 1840 transitions. [2024-11-22 17:10:08,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 17:10:08,157 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 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 105 [2024-11-22 17:10:08,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:10:08,160 INFO L225 Difference]: With dead ends: 1287 [2024-11-22 17:10:08,160 INFO L226 Difference]: Without dead ends: 691 [2024-11-22 17:10:08,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-22 17:10:08,162 INFO L432 NwaCegarLoop]: 538 mSDtfsCounter, 26 mSDsluCounter, 3322 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3860 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 17:10:08,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3860 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 17:10:08,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2024-11-22 17:10:08,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 679. [2024-11-22 17:10:08,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 653 states have (on average 1.4042879019908117) internal successors, (917), 669 states have internal predecessors, (917), 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) [2024-11-22 17:10:08,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 959 transitions. [2024-11-22 17:10:08,181 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 959 transitions. Word has length 105 [2024-11-22 17:10:08,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:10:08,181 INFO L471 AbstractCegarLoop]: Abstraction has 679 states and 959 transitions. [2024-11-22 17:10:08,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 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) [2024-11-22 17:10:08,182 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 959 transitions. [2024-11-22 17:10:08,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-22 17:10:08,182 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:10:08,183 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:10:08,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 17:10:08,183 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:10:08,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:10:08,184 INFO L85 PathProgramCache]: Analyzing trace with hash -926610965, now seen corresponding path program 1 times [2024-11-22 17:10:08,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:10:08,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924163700] [2024-11-22 17:10:08,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:10:08,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:10:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:10:08,497 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 17:10:08,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:10:08,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924163700] [2024-11-22 17:10:08,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924163700] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:10:08,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252277626] [2024-11-22 17:10:08,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:10:08,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:10:08,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:10:08,500 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) [2024-11-22 17:10:08,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 17:10:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:10:09,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 17:10:09,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:10:09,135 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:10:09,135 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 17:10:09,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252277626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:10:09,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 17:10:09,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-11-22 17:10:09,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095738406] [2024-11-22 17:10:09,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:10:09,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 17:10:09,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:10:09,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 17:10:09,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 17:10:09,137 INFO L87 Difference]: Start difference. First operand 679 states and 959 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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) [2024-11-22 17:10:09,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:10:09,174 INFO L93 Difference]: Finished difference Result 1251 states and 1782 transitions. [2024-11-22 17:10:09,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 17:10:09,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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 105 [2024-11-22 17:10:09,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:10:09,179 INFO L225 Difference]: With dead ends: 1251 [2024-11-22 17:10:09,179 INFO L226 Difference]: Without dead ends: 682 [2024-11-22 17:10:09,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 17:10:09,180 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 [2024-11-22 17:10:09,181 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] [2024-11-22 17:10:09,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2024-11-22 17:10:09,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2024-11-22 17:10:09,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 655 states have (on average 1.4045801526717556) internal successors, (920), 672 states have internal predecessors, (920), 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) [2024-11-22 17:10:09,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 963 transitions. [2024-11-22 17:10:09,201 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 963 transitions. Word has length 105 [2024-11-22 17:10:09,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:10:09,201 INFO L471 AbstractCegarLoop]: Abstraction has 682 states and 963 transitions. [2024-11-22 17:10:09,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 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) [2024-11-22 17:10:09,202 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 963 transitions. [2024-11-22 17:10:09,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-22 17:10:09,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:10:09,203 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:10:09,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 17:10:09,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-22 17:10:09,404 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:10:09,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:10:09,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1666553801, now seen corresponding path program 1 times [2024-11-22 17:10:09,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:10:09,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112846242] [2024-11-22 17:10:09,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:10:09,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:10:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:10:09,939 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 17:10:09,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:10:09,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112846242] [2024-11-22 17:10:09,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112846242] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:10:09,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001335764] [2024-11-22 17:10:09,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:10:09,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:10:09,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:10:09,942 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) [2024-11-22 17:10:09,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 17:10:10,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:10:10,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-22 17:10:10,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:10:10,574 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 17:10:10,574 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 17:10:10,674 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 17:10:10,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001335764] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 17:10:10,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 17:10:10,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-22 17:10:10,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911120410] [2024-11-22 17:10:10,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 17:10:10,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 17:10:10,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:10:10,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 17:10:10,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-22 17:10:10,678 INFO L87 Difference]: Start difference. First operand 682 states and 963 transitions. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 17:10:10,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:10:10,893 INFO L93 Difference]: Finished difference Result 1267 states and 1805 transitions. [2024-11-22 17:10:10,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 17:10:10,893 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 107 [2024-11-22 17:10:10,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:10:10,897 INFO L225 Difference]: With dead ends: 1267 [2024-11-22 17:10:10,897 INFO L226 Difference]: Without dead ends: 693 [2024-11-22 17:10:10,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2024-11-22 17:10:10,899 INFO L432 NwaCegarLoop]: 548 mSDtfsCounter, 10 mSDsluCounter, 2175 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2723 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 17:10:10,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2723 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 17:10:10,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2024-11-22 17:10:10,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 691. [2024-11-22 17:10:10,919 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) [2024-11-22 17:10:10,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 975 transitions. [2024-11-22 17:10:10,921 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 975 transitions. Word has length 107 [2024-11-22 17:10:10,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:10:10,922 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 975 transitions. [2024-11-22 17:10:10,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 17:10:10,922 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 975 transitions. [2024-11-22 17:10:10,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-22 17:10:10,923 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:10:10,923 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] [2024-11-22 17:10:10,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 17:10:11,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:10:11,124 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:10:11,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:10:11,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1666405397, now seen corresponding path program 2 times [2024-11-22 17:10:11,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:10:11,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230029311] [2024-11-22 17:10:11,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 17:10:11,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:10:11,213 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 17:10:11,214 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 17:10:11,583 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-22 17:10:11,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:10:11,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230029311] [2024-11-22 17:10:11,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230029311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:10:11,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:10:11,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 17:10:11,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007777947] [2024-11-22 17:10:11,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:10:11,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 17:10:11,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:10:11,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 17:10:11,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-22 17:10:11,585 INFO L87 Difference]: Start difference. First operand 691 states and 975 transitions. Second operand has 10 states, 10 states have (on average 9.7) 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) [2024-11-22 17:10:12,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:10:12,281 INFO L93 Difference]: Finished difference Result 1333 states and 1895 transitions. [2024-11-22 17:10:12,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 17:10:12,282 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.7) 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 [2024-11-22 17:10:12,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:10:12,285 INFO L225 Difference]: With dead ends: 1333 [2024-11-22 17:10:12,285 INFO L226 Difference]: Without dead ends: 725 [2024-11-22 17:10:12,287 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-22 17:10:12,287 INFO L432 NwaCegarLoop]: 523 mSDtfsCounter, 17 mSDsluCounter, 3787 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4310 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 17:10:12,287 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4310 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 17:10:12,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2024-11-22 17:10:12,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 701. [2024-11-22 17:10:12,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 673 states have (on average 1.4026745913818721) internal successors, (944), 690 states have internal predecessors, (944), 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) [2024-11-22 17:10:12,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 987 transitions. [2024-11-22 17:10:12,308 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 987 transitions. Word has length 111 [2024-11-22 17:10:12,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:10:12,308 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 987 transitions. [2024-11-22 17:10:12,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) 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) [2024-11-22 17:10:12,309 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 987 transitions. [2024-11-22 17:10:12,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-22 17:10:12,310 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:10:12,310 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] [2024-11-22 17:10:12,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 17:10:12,310 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:10:12,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:10:12,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1013800050, now seen corresponding path program 1 times [2024-11-22 17:10:12,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:10:12,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673410267] [2024-11-22 17:10:12,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:10:12,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:10:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:10:12,794 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-22 17:10:12,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:10:12,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673410267] [2024-11-22 17:10:12,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673410267] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:10:12,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650975221] [2024-11-22 17:10:12,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:10:12,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:10:12,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:10:12,797 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) [2024-11-22 17:10:12,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 17:10:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:10:13,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-22 17:10:13,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:10:13,608 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-22 17:10:13,609 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 17:10:13,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650975221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:10:13,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 17:10:13,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-11-22 17:10:13,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708355100] [2024-11-22 17:10:13,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:10:13,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 17:10:13,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:10:13,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 17:10:13,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-22 17:10:13,611 INFO L87 Difference]: Start difference. First operand 701 states and 987 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) [2024-11-22 17:10:14,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:10:14,181 INFO L93 Difference]: Finished difference Result 1334 states and 1897 transitions. [2024-11-22 17:10:14,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 17:10:14,182 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 111 [2024-11-22 17:10:14,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:10:14,185 INFO L225 Difference]: With dead ends: 1334 [2024-11-22 17:10:14,185 INFO L226 Difference]: Without dead ends: 711 [2024-11-22 17:10:14,187 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-22 17:10:14,187 INFO L432 NwaCegarLoop]: 537 mSDtfsCounter, 10 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 17:10:14,187 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2873 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 17:10:14,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2024-11-22 17:10:14,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 701. [2024-11-22 17:10:14,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 673 states have (on average 1.4026745913818721) internal successors, (944), 690 states have internal predecessors, (944), 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) [2024-11-22 17:10:14,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 987 transitions. [2024-11-22 17:10:14,209 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 987 transitions. Word has length 111 [2024-11-22 17:10:14,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:10:14,210 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 987 transitions. [2024-11-22 17:10:14,210 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) [2024-11-22 17:10:14,210 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 987 transitions. [2024-11-22 17:10:14,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-22 17:10:14,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:10:14,211 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, 1] [2024-11-22 17:10:14,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 17:10:14,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:10:14,412 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:10:14,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:10:14,412 INFO L85 PathProgramCache]: Analyzing trace with hash -42628906, now seen corresponding path program 1 times [2024-11-22 17:10:14,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:10:14,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567950416] [2024-11-22 17:10:14,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:10:14,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:10:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:10:14,907 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-22 17:10:14,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:10:14,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567950416] [2024-11-22 17:10:14,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567950416] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:10:14,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764706384] [2024-11-22 17:10:14,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:10:14,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:10:14,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:10:14,910 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) [2024-11-22 17:10:14,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 17:10:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:10:15,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-22 17:10:15,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:10:15,466 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-22 17:10:15,467 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 17:10:15,593 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-22 17:10:15,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764706384] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 17:10:15,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 17:10:15,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 13 [2024-11-22 17:10:15,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603453595] [2024-11-22 17:10:15,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 17:10:15,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 17:10:15,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:10:15,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 17:10:15,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-22 17:10:15,596 INFO L87 Difference]: Start difference. First operand 701 states and 987 transitions. Second operand has 13 states, 13 states have (on average 9.0) internal successors, (117), 13 states have internal predecessors, (117), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 17:10:15,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:10:15,834 INFO L93 Difference]: Finished difference Result 1297 states and 1840 transitions. [2024-11-22 17:10:15,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 17:10:15,835 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.0) internal successors, (117), 13 states have internal predecessors, (117), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 112 [2024-11-22 17:10:15,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:10:15,840 INFO L225 Difference]: With dead ends: 1297 [2024-11-22 17:10:15,840 INFO L226 Difference]: Without dead ends: 707 [2024-11-22 17:10:15,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2024-11-22 17:10:15,842 INFO L432 NwaCegarLoop]: 536 mSDtfsCounter, 29 mSDsluCounter, 2125 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 2661 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 17:10:15,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 2661 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 17:10:15,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2024-11-22 17:10:15,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 705. [2024-11-22 17:10:15,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 677 states have (on average 1.4002954209748892) internal successors, (948), 694 states have internal predecessors, (948), 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) [2024-11-22 17:10:15,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 991 transitions. [2024-11-22 17:10:15,865 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 991 transitions. Word has length 112 [2024-11-22 17:10:15,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:10:15,865 INFO L471 AbstractCegarLoop]: Abstraction has 705 states and 991 transitions. [2024-11-22 17:10:15,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.0) internal successors, (117), 13 states have internal predecessors, (117), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 17:10:15,865 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 991 transitions. [2024-11-22 17:10:15,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-22 17:10:15,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:10:15,866 INFO L215 NwaCegarLoop]: trace histogram [10, 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] [2024-11-22 17:10:15,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 17:10:16,066 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,SelfDestructingSolverStorable15 [2024-11-22 17:10:16,067 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:10:16,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:10:16,068 INFO L85 PathProgramCache]: Analyzing trace with hash 423453270, now seen corresponding path program 2 times [2024-11-22 17:10:16,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:10:16,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471064629] [2024-11-22 17:10:16,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 17:10:16,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:10:16,157 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 17:10:16,158 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 17:10:16,619 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-22 17:10:16,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:10:16,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471064629] [2024-11-22 17:10:16,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471064629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:10:16,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:10:16,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 17:10:16,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860415541] [2024-11-22 17:10:16,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:10:16,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 17:10:16,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:10:16,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 17:10:16,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-22 17:10:16,623 INFO L87 Difference]: Start difference. First operand 705 states and 991 transitions. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 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) [2024-11-22 17:10:17,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:10:17,296 INFO L93 Difference]: Finished difference Result 1346 states and 1909 transitions. [2024-11-22 17:10:17,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 17:10:17,297 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 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 116 [2024-11-22 17:10:17,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:10:17,300 INFO L225 Difference]: With dead ends: 1346 [2024-11-22 17:10:17,300 INFO L226 Difference]: Without dead ends: 729 [2024-11-22 17:10:17,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-22 17:10:17,302 INFO L432 NwaCegarLoop]: 536 mSDtfsCounter, 13 mSDsluCounter, 3315 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3851 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 17:10:17,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3851 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 17:10:17,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2024-11-22 17:10:17,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 713. [2024-11-22 17:10:17,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 685 states have (on average 1.3985401459854014) internal successors, (958), 702 states have internal predecessors, (958), 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) [2024-11-22 17:10:17,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1001 transitions. [2024-11-22 17:10:17,320 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1001 transitions. Word has length 116 [2024-11-22 17:10:17,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:10:17,320 INFO L471 AbstractCegarLoop]: Abstraction has 713 states and 1001 transitions. [2024-11-22 17:10:17,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 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) [2024-11-22 17:10:17,321 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1001 transitions. [2024-11-22 17:10:17,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-22 17:10:17,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:10:17,322 INFO L215 NwaCegarLoop]: trace histogram [10, 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] [2024-11-22 17:10:17,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 17:10:17,322 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:10:17,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:10:17,322 INFO L85 PathProgramCache]: Analyzing trace with hash 243848336, now seen corresponding path program 1 times [2024-11-22 17:10:17,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:10:17,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750769859] [2024-11-22 17:10:17,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:10:17,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:10:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:10:18,074 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-22 17:10:18,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:10:18,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750769859] [2024-11-22 17:10:18,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750769859] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:10:18,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146086960] [2024-11-22 17:10:18,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:10:18,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:10:18,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:10:18,078 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) [2024-11-22 17:10:18,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 17:10:18,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:10:18,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-22 17:10:18,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:10:18,918 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-22 17:10:18,919 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 17:10:18,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146086960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:10:18,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 17:10:18,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2024-11-22 17:10:18,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862094534] [2024-11-22 17:10:18,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:10:18,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 17:10:18,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:10:18,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 17:10:18,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2024-11-22 17:10:18,920 INFO L87 Difference]: Start difference. First operand 713 states and 1001 transitions. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 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) [2024-11-22 17:10:19,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:10:19,454 INFO L93 Difference]: Finished difference Result 1342 states and 1901 transitions. [2024-11-22 17:10:19,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 17:10:19,455 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 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 116 [2024-11-22 17:10:19,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:10:19,458 INFO L225 Difference]: With dead ends: 1342 [2024-11-22 17:10:19,458 INFO L226 Difference]: Without dead ends: 709 [2024-11-22 17:10:19,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2024-11-22 17:10:19,460 INFO L432 NwaCegarLoop]: 536 mSDtfsCounter, 11 mSDsluCounter, 3311 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3847 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 17:10:19,460 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 3847 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 17:10:19,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2024-11-22 17:10:19,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 709. [2024-11-22 17:10:19,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 681 states have (on average 1.3979441997063142) internal successors, (952), 698 states have internal predecessors, (952), 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) [2024-11-22 17:10:19,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 995 transitions. [2024-11-22 17:10:19,478 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 995 transitions. Word has length 116 [2024-11-22 17:10:19,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:10:19,479 INFO L471 AbstractCegarLoop]: Abstraction has 709 states and 995 transitions. [2024-11-22 17:10:19,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 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) [2024-11-22 17:10:19,479 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 995 transitions. [2024-11-22 17:10:19,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-22 17:10:19,480 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:10:19,480 INFO L215 NwaCegarLoop]: trace histogram [10, 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] [2024-11-22 17:10:19,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-22 17:10:19,681 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,SelfDestructingSolverStorable17 [2024-11-22 17:10:19,681 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:10:19,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:10:19,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1170430194, now seen corresponding path program 1 times [2024-11-22 17:10:19,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:10:19,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195551042] [2024-11-22 17:10:19,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:10:19,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:10:19,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:10:20,246 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-22 17:10:20,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:10:20,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195551042] [2024-11-22 17:10:20,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195551042] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:10:20,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534590569] [2024-11-22 17:10:20,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:10:20,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:10:20,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:10:20,249 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) [2024-11-22 17:10:20,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 17:10:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:10:20,804 INFO L255 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-22 17:10:20,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:10:20,921 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 2 proven. 61 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 17:10:20,921 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 17:10:21,136 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 37 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-22 17:10:21,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534590569] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 17:10:21,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 17:10:21,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 23 [2024-11-22 17:10:21,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386933145] [2024-11-22 17:10:21,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 17:10:21,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 17:10:21,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:10:21,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 17:10:21,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2024-11-22 17:10:21,142 INFO L87 Difference]: Start difference. First operand 709 states and 995 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 17:10:21,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:10:21,639 INFO L93 Difference]: Finished difference Result 1320 states and 1871 transitions. [2024-11-22 17:10:21,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-22 17:10:21,640 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 116 [2024-11-22 17:10:21,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:10:21,645 INFO L225 Difference]: With dead ends: 1320 [2024-11-22 17:10:21,645 INFO L226 Difference]: Without dead ends: 726 [2024-11-22 17:10:21,646 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=345, Invalid=845, Unknown=0, NotChecked=0, Total=1190 [2024-11-22 17:10:21,647 INFO L432 NwaCegarLoop]: 549 mSDtfsCounter, 10 mSDsluCounter, 3842 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 4391 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 17:10:21,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 4391 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 17:10:21,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2024-11-22 17:10:21,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 718. [2024-11-22 17:10:21,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 690 states have (on average 1.4043478260869566) internal successors, (969), 707 states have internal predecessors, (969), 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) [2024-11-22 17:10:21,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1012 transitions. [2024-11-22 17:10:21,668 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1012 transitions. Word has length 116 [2024-11-22 17:10:21,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:10:21,668 INFO L471 AbstractCegarLoop]: Abstraction has 718 states and 1012 transitions. [2024-11-22 17:10:21,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 2 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 17:10:21,668 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1012 transitions. [2024-11-22 17:10:21,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-22 17:10:21,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:10:21,669 INFO L215 NwaCegarLoop]: trace histogram [19, 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] [2024-11-22 17:10:21,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-22 17:10:21,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:10:21,870 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:10:21,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:10:21,871 INFO L85 PathProgramCache]: Analyzing trace with hash 2129751136, now seen corresponding path program 2 times [2024-11-22 17:10:21,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:10:21,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486712004] [2024-11-22 17:10:21,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 17:10:21,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:10:21,958 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 17:10:21,959 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 17:10:22,581 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2024-11-22 17:10:22,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:10:22,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486712004] [2024-11-22 17:10:22,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486712004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:10:22,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:10:22,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 17:10:22,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521098938] [2024-11-22 17:10:22,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:10:22,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 17:10:22,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:10:22,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 17:10:22,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-22 17:10:22,584 INFO L87 Difference]: Start difference. First operand 718 states and 1012 transitions. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 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) [2024-11-22 17:10:26,956 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 [] [2024-11-22 17:10:27,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:10:27,436 INFO L93 Difference]: Finished difference Result 1369 states and 1943 transitions. [2024-11-22 17:10:27,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 17:10:27,438 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 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 125 [2024-11-22 17:10:27,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:10:27,441 INFO L225 Difference]: With dead ends: 1369 [2024-11-22 17:10:27,441 INFO L226 Difference]: Without dead ends: 736 [2024-11-22 17:10:27,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-11-22 17:10:27,443 INFO L432 NwaCegarLoop]: 543 mSDtfsCounter, 42 mSDsluCounter, 3283 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3826 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-22 17:10:27,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3826 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 644 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2024-11-22 17:10:27,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2024-11-22 17:10:27,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 722. [2024-11-22 17:10:27,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 694 states have (on average 1.4020172910662825) internal successors, (973), 711 states have internal predecessors, (973), 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) [2024-11-22 17:10:27,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1016 transitions. [2024-11-22 17:10:27,464 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 1016 transitions. Word has length 125 [2024-11-22 17:10:27,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:10:27,465 INFO L471 AbstractCegarLoop]: Abstraction has 722 states and 1016 transitions. [2024-11-22 17:10:27,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 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) [2024-11-22 17:10:27,465 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 1016 transitions. [2024-11-22 17:10:27,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-22 17:10:27,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:10:27,466 INFO L215 NwaCegarLoop]: trace histogram [19, 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] [2024-11-22 17:10:27,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 17:10:27,467 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:10:27,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:10:27,467 INFO L85 PathProgramCache]: Analyzing trace with hash 557170621, now seen corresponding path program 1 times [2024-11-22 17:10:27,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:10:27,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540024121] [2024-11-22 17:10:27,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:10:27,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:10:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:10:28,170 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-22 17:10:28,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:10:28,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540024121] [2024-11-22 17:10:28,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540024121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:10:28,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699785777] [2024-11-22 17:10:28,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:10:28,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:10:28,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:10:28,172 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 17:10:28,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 17:10:29,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:10:29,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-22 17:10:29,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:10:29,594 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 107 proven. 28 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-22 17:10:29,595 INFO L311 TraceCheckSpWp]: Computing backward predicates...