./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3011b5baaaedb6c621e2913d841379eae3b8a9da7212e43b784fc8c1004eda96 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 13:14:37,319 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 13:14:37,378 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-20 13:14:37,386 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 13:14:37,387 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 13:14:37,409 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 13:14:37,409 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 13:14:37,410 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 13:14:37,410 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 13:14:37,411 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 13:14:37,411 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 13:14:37,412 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 13:14:37,412 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 13:14:37,415 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 13:14:37,415 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 13:14:37,415 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 13:14:37,416 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-20 13:14:37,416 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 13:14:37,416 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 13:14:37,417 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 13:14:37,417 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 13:14:37,417 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-20 13:14:37,421 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 13:14:37,421 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-20 13:14:37,422 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 13:14:37,422 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 13:14:37,422 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-20 13:14:37,422 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 13:14:37,423 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 13:14:37,423 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 13:14:37,423 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 13:14:37,423 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 13:14:37,424 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 13:14:37,424 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 13:14:37,424 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 13:14:37,424 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-20 13:14:37,425 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 13:14:37,425 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 13:14:37,425 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 13:14:37,425 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 13:14:37,426 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 13:14:37,427 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 13:14:37,427 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3011b5baaaedb6c621e2913d841379eae3b8a9da7212e43b784fc8c1004eda96 [2024-11-20 13:14:37,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 13:14:37,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 13:14:37,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 13:14:37,692 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 13:14:37,692 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 13:14:37,694 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i [2024-11-20 13:14:39,130 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 13:14:39,397 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 13:14:39,398 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i [2024-11-20 13:14:39,414 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20e046f40/7a896c0742d34eec98d01ad17e9c1cb7/FLAG6a624c668 [2024-11-20 13:14:39,432 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20e046f40/7a896c0742d34eec98d01ad17e9c1cb7 [2024-11-20 13:14:39,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 13:14:39,438 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 13:14:39,440 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 13:14:39,440 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 13:14:39,444 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 13:14:39,445 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:14:39" (1/1) ... [2024-11-20 13:14:39,446 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49ff02f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:14:39, skipping insertion in model container [2024-11-20 13:14:39,448 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:14:39" (1/1) ... [2024-11-20 13:14:39,521 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 13:14:39,920 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i[33021,33034] [2024-11-20 13:14:40,076 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i[45234,45247] [2024-11-20 13:14:40,089 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 13:14:40,099 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 13:14:40,145 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i[33021,33034] [2024-11-20 13:14:40,202 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i[45234,45247] [2024-11-20 13:14:40,217 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 13:14:40,253 INFO L204 MainTranslator]: Completed translation [2024-11-20 13:14:40,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:14:40 WrapperNode [2024-11-20 13:14:40,254 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 13:14:40,255 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 13:14:40,255 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 13:14:40,256 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 13:14:40,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:14:40" (1/1) ... [2024-11-20 13:14:40,293 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:14:40" (1/1) ... [2024-11-20 13:14:40,358 INFO L138 Inliner]: procedures = 177, calls = 340, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1589 [2024-11-20 13:14:40,358 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 13:14:40,359 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 13:14:40,359 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 13:14:40,359 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 13:14:40,373 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:14:40" (1/1) ... [2024-11-20 13:14:40,374 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:14:40" (1/1) ... [2024-11-20 13:14:40,394 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:14:40" (1/1) ... [2024-11-20 13:14:40,503 INFO L175 MemorySlicer]: Split 304 memory accesses to 3 slices as follows [2, 268, 34]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 62 writes are split as follows [0, 58, 4]. [2024-11-20 13:14:40,507 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:14:40" (1/1) ... [2024-11-20 13:14:40,507 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:14:40" (1/1) ... [2024-11-20 13:14:40,549 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:14:40" (1/1) ... [2024-11-20 13:14:40,568 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:14:40" (1/1) ... [2024-11-20 13:14:40,581 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:14:40" (1/1) ... [2024-11-20 13:14:40,592 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:14:40" (1/1) ... [2024-11-20 13:14:40,610 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 13:14:40,611 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 13:14:40,612 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 13:14:40,612 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 13:14:40,613 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:14:40" (1/1) ... [2024-11-20 13:14:40,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 13:14:40,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:14:40,652 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) [2024-11-20 13:14:40,663 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 [2024-11-20 13:14:40,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 13:14:40,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 13:14:40,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 13:14:40,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-20 13:14:40,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-20 13:14:40,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 13:14:40,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 13:14:40,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-20 13:14:40,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-20 13:14:40,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-20 13:14:40,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-20 13:14:40,709 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-20 13:14:40,709 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-20 13:14:40,709 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-20 13:14:40,709 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2024-11-20 13:14:40,709 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2024-11-20 13:14:40,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 13:14:40,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 13:14:40,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-20 13:14:40,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-20 13:14:40,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-20 13:14:40,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 13:14:40,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-20 13:14:40,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-20 13:14:40,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-20 13:14:40,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 13:14:40,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 13:14:40,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 13:14:40,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 13:14:40,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 13:14:40,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 13:14:40,918 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 13:14:40,921 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 13:14:42,309 INFO L? ?]: Removed 355 outVars from TransFormulas that were not future-live. [2024-11-20 13:14:42,310 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 13:14:42,335 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 13:14:42,339 INFO L316 CfgBuilder]: Removed 71 assume(true) statements. [2024-11-20 13:14:42,339 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:14:42 BoogieIcfgContainer [2024-11-20 13:14:42,340 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 13:14:42,341 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 13:14:42,342 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 13:14:42,345 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 13:14:42,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 01:14:39" (1/3) ... [2024-11-20 13:14:42,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a5091df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:14:42, skipping insertion in model container [2024-11-20 13:14:42,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:14:40" (2/3) ... [2024-11-20 13:14:42,347 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a5091df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 01:14:42, skipping insertion in model container [2024-11-20 13:14:42,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:14:42" (3/3) ... [2024-11-20 13:14:42,348 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test8-2.i [2024-11-20 13:14:42,364 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 13:14:42,364 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-20 13:14:42,446 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 13:14:42,454 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;@4de267a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 13:14:42,455 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-20 13:14:42,461 INFO L276 IsEmpty]: Start isEmpty. Operand has 471 states, 445 states have (on average 1.6269662921348316) internal successors, (724), 462 states have internal predecessors, (724), 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) [2024-11-20 13:14:42,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-20 13:14:42,467 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:14:42,468 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:14:42,468 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:14:42,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:14:42,472 INFO L85 PathProgramCache]: Analyzing trace with hash -351686983, now seen corresponding path program 1 times [2024-11-20 13:14:42,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:14:42,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119612307] [2024-11-20 13:14:42,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:14:42,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:14:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:42,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:14:42,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:14:42,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119612307] [2024-11-20 13:14:42,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119612307] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:14:42,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:14:42,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 13:14:42,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973010227] [2024-11-20 13:14:42,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:14:42,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-20 13:14:42,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:14:42,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-20 13:14:42,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-20 13:14:42,660 INFO L87 Difference]: Start difference. First operand has 471 states, 445 states have (on average 1.6269662921348316) internal successors, (724), 462 states have internal predecessors, (724), 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) [2024-11-20 13:14:42,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:14:42,740 INFO L93 Difference]: Finished difference Result 940 states and 1543 transitions. [2024-11-20 13:14:42,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-20 13:14:42,742 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 [2024-11-20 13:14:42,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:14:42,759 INFO L225 Difference]: With dead ends: 940 [2024-11-20 13:14:42,759 INFO L226 Difference]: Without dead ends: 432 [2024-11-20 13:14:42,766 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 [2024-11-20 13:14:42,769 INFO L432 NwaCegarLoop]: 687 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, 687 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 [2024-11-20 13:14:42,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 13:14:42,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2024-11-20 13:14:42,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 432. [2024-11-20 13:14:42,821 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) [2024-11-20 13:14:42,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 635 transitions. [2024-11-20 13:14:42,826 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 635 transitions. Word has length 9 [2024-11-20 13:14:42,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:14:42,827 INFO L471 AbstractCegarLoop]: Abstraction has 432 states and 635 transitions. [2024-11-20 13:14:42,827 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) [2024-11-20 13:14:42,827 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 635 transitions. [2024-11-20 13:14:42,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-20 13:14:42,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:14:42,832 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] [2024-11-20 13:14:42,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 13:14:42,833 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:14:42,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:14:42,833 INFO L85 PathProgramCache]: Analyzing trace with hash 559678017, now seen corresponding path program 1 times [2024-11-20 13:14:42,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:14:42,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057267958] [2024-11-20 13:14:42,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:14:42,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:14:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:43,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:14:43,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:14:43,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057267958] [2024-11-20 13:14:43,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057267958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:14:43,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:14:43,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 13:14:43,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722746929] [2024-11-20 13:14:43,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:14:43,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 13:14:43,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:14:43,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 13:14:43,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:14:43,316 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) [2024-11-20 13:14:43,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:14:43,494 INFO L93 Difference]: Finished difference Result 1045 states and 1537 transitions. [2024-11-20 13:14:43,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 13:14:43,495 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 [2024-11-20 13:14:43,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:14:43,501 INFO L225 Difference]: With dead ends: 1045 [2024-11-20 13:14:43,502 INFO L226 Difference]: Without dead ends: 817 [2024-11-20 13:14:43,504 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 [2024-11-20 13:14:43,505 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 [2024-11-20 13:14:43,506 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] [2024-11-20 13:14:43,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2024-11-20 13:14:43,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 434. [2024-11-20 13:14:43,545 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) [2024-11-20 13:14:43,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 637 transitions. [2024-11-20 13:14:43,548 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 637 transitions. Word has length 64 [2024-11-20 13:14:43,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:14:43,549 INFO L471 AbstractCegarLoop]: Abstraction has 434 states and 637 transitions. [2024-11-20 13:14:43,549 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) [2024-11-20 13:14:43,549 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 637 transitions. [2024-11-20 13:14:43,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-20 13:14:43,552 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:14:43,552 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] [2024-11-20 13:14:43,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 13:14:43,553 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:14:43,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:14:43,554 INFO L85 PathProgramCache]: Analyzing trace with hash 2092098682, now seen corresponding path program 1 times [2024-11-20 13:14:43,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:14:43,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391174861] [2024-11-20 13:14:43,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:14:43,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:14:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:43,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:14:43,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:14:43,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391174861] [2024-11-20 13:14:43,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391174861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:14:43,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:14:43,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 13:14:43,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991736901] [2024-11-20 13:14:43,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:14:43,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 13:14:43,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:14:43,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 13:14:43,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 13:14:43,906 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) [2024-11-20 13:14:44,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:14:44,018 INFO L93 Difference]: Finished difference Result 822 states and 1204 transitions. [2024-11-20 13:14:44,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 13:14:44,019 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 [2024-11-20 13:14:44,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:14:44,021 INFO L225 Difference]: With dead ends: 822 [2024-11-20 13:14:44,022 INFO L226 Difference]: Without dead ends: 392 [2024-11-20 13:14:44,024 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 [2024-11-20 13:14:44,025 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 [2024-11-20 13:14:44,027 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] [2024-11-20 13:14:44,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-11-20 13:14:44,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2024-11-20 13:14:44,043 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) [2024-11-20 13:14:44,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 560 transitions. [2024-11-20 13:14:44,046 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 560 transitions. Word has length 85 [2024-11-20 13:14:44,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:14:44,047 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 560 transitions. [2024-11-20 13:14:44,047 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) [2024-11-20 13:14:44,047 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 560 transitions. [2024-11-20 13:14:44,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-20 13:14:44,052 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:14:44,052 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] [2024-11-20 13:14:44,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 13:14:44,053 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:14:44,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:14:44,053 INFO L85 PathProgramCache]: Analyzing trace with hash -2046434962, now seen corresponding path program 1 times [2024-11-20 13:14:44,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:14:44,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402371966] [2024-11-20 13:14:44,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:14:44,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:14:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:44,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 13:14:44,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:14:44,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402371966] [2024-11-20 13:14:44,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402371966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:14:44,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:14:44,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 13:14:44,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482091252] [2024-11-20 13:14:44,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:14:44,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 13:14:44,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:14:44,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 13:14:44,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 13:14:44,234 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) [2024-11-20 13:14:44,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:14:44,330 INFO L93 Difference]: Finished difference Result 1032 states and 1478 transitions. [2024-11-20 13:14:44,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 13:14:44,331 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 [2024-11-20 13:14:44,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:14:44,350 INFO L225 Difference]: With dead ends: 1032 [2024-11-20 13:14:44,351 INFO L226 Difference]: Without dead ends: 644 [2024-11-20 13:14:44,352 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 [2024-11-20 13:14:44,353 INFO L432 NwaCegarLoop]: 737 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, 1266 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 [2024-11-20 13:14:44,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 1266 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 13:14:44,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2024-11-20 13:14:44,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 641. [2024-11-20 13:14:44,368 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) [2024-11-20 13:14:44,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 918 transitions. [2024-11-20 13:14:44,370 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 918 transitions. Word has length 85 [2024-11-20 13:14:44,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:14:44,371 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 918 transitions. [2024-11-20 13:14:44,371 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) [2024-11-20 13:14:44,372 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 918 transitions. [2024-11-20 13:14:44,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-20 13:14:44,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:14:44,374 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] [2024-11-20 13:14:44,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 13:14:44,374 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:14:44,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:14:44,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1745733320, now seen corresponding path program 1 times [2024-11-20 13:14:44,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:14:44,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364494359] [2024-11-20 13:14:44,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:14:44,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:14:44,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:44,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-20 13:14:44,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:44,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-20 13:14:44,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:44,815 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 13:14:44,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:14:44,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364494359] [2024-11-20 13:14:44,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364494359] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:14:44,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809269144] [2024-11-20 13:14:44,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:14:44,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:14:44,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:14:44,819 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) [2024-11-20 13:14:44,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 13:14:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:45,152 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-20 13:14:45,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:14:45,197 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 [2024-11-20 13:14:45,222 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 [2024-11-20 13:14:46,154 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:14:46,157 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:14:46,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809269144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:14:46,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:14:46,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2024-11-20 13:14:46,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61677438] [2024-11-20 13:14:46,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:14:46,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 13:14:46,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:14:46,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 13:14:46,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-20 13:14:46,161 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) [2024-11-20 13:14:47,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:14:47,623 INFO L93 Difference]: Finished difference Result 1537 states and 2203 transitions. [2024-11-20 13:14:47,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 13:14:47,623 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 [2024-11-20 13:14:47,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:14:47,630 INFO L225 Difference]: With dead ends: 1537 [2024-11-20 13:14:47,630 INFO L226 Difference]: Without dead ends: 940 [2024-11-20 13:14:47,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2024-11-20 13:14:47,632 INFO L432 NwaCegarLoop]: 534 mSDtfsCounter, 589 mSDsluCounter, 2767 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 3301 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-20 13:14:47,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 3301 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-20 13:14:47,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2024-11-20 13:14:47,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 641. [2024-11-20 13:14:47,657 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) [2024-11-20 13:14:47,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 917 transitions. [2024-11-20 13:14:47,660 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 917 transitions. Word has length 100 [2024-11-20 13:14:47,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:14:47,661 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 917 transitions. [2024-11-20 13:14:47,661 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) [2024-11-20 13:14:47,661 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 917 transitions. [2024-11-20 13:14:47,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-20 13:14:47,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:14:47,662 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] [2024-11-20 13:14:47,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-20 13:14:47,866 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 [2024-11-20 13:14:47,867 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:14:47,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:14:47,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1330514792, now seen corresponding path program 1 times [2024-11-20 13:14:47,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:14:47,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335915255] [2024-11-20 13:14:47,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:14:47,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:14:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:48,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-20 13:14:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:48,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-20 13:14:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:48,241 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 13:14:48,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:14:48,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335915255] [2024-11-20 13:14:48,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335915255] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:14:48,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292857320] [2024-11-20 13:14:48,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:14:48,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:14:48,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:14:48,258 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) [2024-11-20 13:14:48,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 13:14:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:48,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-20 13:14:48,753 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:14:48,762 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 [2024-11-20 13:14:48,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-20 13:14:49,816 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:14:49,819 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:14:49,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292857320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:14:49,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:14:49,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [5] total 16 [2024-11-20 13:14:49,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429731841] [2024-11-20 13:14:49,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:14:49,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 13:14:49,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:14:49,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 13:14:49,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-11-20 13:14:49,822 INFO L87 Difference]: Start difference. First operand 641 states and 917 transitions. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 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) [2024-11-20 13:14:52,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:14:52,082 INFO L93 Difference]: Finished difference Result 1552 states and 2223 transitions. [2024-11-20 13:14:52,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-20 13:14:52,083 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 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 [2024-11-20 13:14:52,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:14:52,088 INFO L225 Difference]: With dead ends: 1552 [2024-11-20 13:14:52,088 INFO L226 Difference]: Without dead ends: 960 [2024-11-20 13:14:52,089 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2024-11-20 13:14:52,090 INFO L432 NwaCegarLoop]: 506 mSDtfsCounter, 846 mSDsluCounter, 3416 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 3922 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-20 13:14:52,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 3922 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-20 13:14:52,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2024-11-20 13:14:52,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 657. [2024-11-20 13:14:52,117 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) [2024-11-20 13:14:52,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 937 transitions. [2024-11-20 13:14:52,120 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 937 transitions. Word has length 101 [2024-11-20 13:14:52,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:14:52,121 INFO L471 AbstractCegarLoop]: Abstraction has 657 states and 937 transitions. [2024-11-20 13:14:52,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 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) [2024-11-20 13:14:52,121 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 937 transitions. [2024-11-20 13:14:52,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-20 13:14:52,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:14:52,123 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] [2024-11-20 13:14:52,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-20 13:14:52,323 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 [2024-11-20 13:14:52,324 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:14:52,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:14:52,324 INFO L85 PathProgramCache]: Analyzing trace with hash -295222196, now seen corresponding path program 1 times [2024-11-20 13:14:52,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:14:52,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723737549] [2024-11-20 13:14:52,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:14:52,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:14:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:52,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-20 13:14:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:52,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-20 13:14:52,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:52,698 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:14:52,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:14:52,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723737549] [2024-11-20 13:14:52,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723737549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:14:52,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:14:52,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 13:14:52,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051058601] [2024-11-20 13:14:52,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:14:52,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 13:14:52,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:14:52,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 13:14:52,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-20 13:14:52,700 INFO L87 Difference]: Start difference. First operand 657 states and 937 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:14:53,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:14:53,473 INFO L93 Difference]: Finished difference Result 1269 states and 1825 transitions. [2024-11-20 13:14:53,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 13:14:53,474 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 102 [2024-11-20 13:14:53,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:14:53,479 INFO L225 Difference]: With dead ends: 1269 [2024-11-20 13:14:53,479 INFO L226 Difference]: Without dead ends: 670 [2024-11-20 13:14:53,481 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-20 13:14:53,482 INFO L432 NwaCegarLoop]: 462 mSDtfsCounter, 70 mSDsluCounter, 2365 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 2827 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-20 13:14:53,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 2827 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-20 13:14:53,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2024-11-20 13:14:53,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 665. [2024-11-20 13:14:53,500 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) [2024-11-20 13:14:53,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 947 transitions. [2024-11-20 13:14:53,503 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 947 transitions. Word has length 102 [2024-11-20 13:14:53,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:14:53,505 INFO L471 AbstractCegarLoop]: Abstraction has 665 states and 947 transitions. [2024-11-20 13:14:53,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 states have internal predecessors, (93), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:14:53,506 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 947 transitions. [2024-11-20 13:14:53,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-20 13:14:53,508 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:14:53,508 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] [2024-11-20 13:14:53,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 13:14:53,508 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:14:53,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:14:53,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1772476461, now seen corresponding path program 1 times [2024-11-20 13:14:53,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:14:53,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570003570] [2024-11-20 13:14:53,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:14:53,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:14:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:53,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-20 13:14:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:53,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-20 13:14:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:53,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:14:53,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:14:53,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570003570] [2024-11-20 13:14:53,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570003570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:14:53,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:14:53,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 13:14:53,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682296350] [2024-11-20 13:14:53,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:14:53,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 13:14:53,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:14:53,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 13:14:53,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 13:14:53,820 INFO L87 Difference]: Start difference. First operand 665 states and 947 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:14:54,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:14:54,475 INFO L93 Difference]: Finished difference Result 1284 states and 1845 transitions. [2024-11-20 13:14:54,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 13:14:54,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 102 [2024-11-20 13:14:54,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:14:54,479 INFO L225 Difference]: With dead ends: 1284 [2024-11-20 13:14:54,479 INFO L226 Difference]: Without dead ends: 674 [2024-11-20 13:14:54,480 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-20 13:14:54,481 INFO L432 NwaCegarLoop]: 474 mSDtfsCounter, 65 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-20 13:14:54,481 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 2080 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-20 13:14:54,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2024-11-20 13:14:54,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 671. [2024-11-20 13:14:54,498 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) [2024-11-20 13:14:54,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 953 transitions. [2024-11-20 13:14:54,501 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 953 transitions. Word has length 102 [2024-11-20 13:14:54,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:14:54,501 INFO L471 AbstractCegarLoop]: Abstraction has 671 states and 953 transitions. [2024-11-20 13:14:54,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:14:54,502 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 953 transitions. [2024-11-20 13:14:54,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-20 13:14:54,503 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:14:54,503 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] [2024-11-20 13:14:54,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 13:14:54,503 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:14:54,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:14:54,504 INFO L85 PathProgramCache]: Analyzing trace with hash 767959548, now seen corresponding path program 1 times [2024-11-20 13:14:54,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:14:54,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727875136] [2024-11-20 13:14:54,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:14:54,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:14:54,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:54,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-20 13:14:54,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:54,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-20 13:14:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:54,868 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 13:14:54,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:14:54,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727875136] [2024-11-20 13:14:54,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727875136] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:14:54,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160724918] [2024-11-20 13:14:54,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:14:54,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:14:54,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:14:54,871 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) [2024-11-20 13:14:54,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 13:14:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:55,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-20 13:14:55,216 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:14:55,320 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:14:55,321 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:14:55,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160724918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:14:55,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:14:55,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2024-11-20 13:14:55,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025329747] [2024-11-20 13:14:55,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:14:55,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 13:14:55,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:14:55,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 13:14:55,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-20 13:14:55,323 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) [2024-11-20 13:14:55,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:14:55,648 INFO L93 Difference]: Finished difference Result 1297 states and 1856 transitions. [2024-11-20 13:14:55,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 13:14:55,649 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 [2024-11-20 13:14:55,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:14:55,652 INFO L225 Difference]: With dead ends: 1297 [2024-11-20 13:14:55,652 INFO L226 Difference]: Without dead ends: 677 [2024-11-20 13:14:55,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-20 13:14:55,654 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 [2024-11-20 13:14:55,654 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] [2024-11-20 13:14:55,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2024-11-20 13:14:55,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 659. [2024-11-20 13:14:55,672 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) [2024-11-20 13:14:55,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 935 transitions. [2024-11-20 13:14:55,675 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 935 transitions. Word has length 103 [2024-11-20 13:14:55,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:14:55,676 INFO L471 AbstractCegarLoop]: Abstraction has 659 states and 935 transitions. [2024-11-20 13:14:55,676 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) [2024-11-20 13:14:55,677 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 935 transitions. [2024-11-20 13:14:55,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-20 13:14:55,679 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:14:55,679 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] [2024-11-20 13:14:55,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-20 13:14:55,880 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 [2024-11-20 13:14:55,881 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:14:55,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:14:55,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1868575013, now seen corresponding path program 1 times [2024-11-20 13:14:55,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:14:55,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434533084] [2024-11-20 13:14:55,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:14:55,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:14:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:56,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-20 13:14:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:56,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-20 13:14:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:56,216 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 13:14:56,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:14:56,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434533084] [2024-11-20 13:14:56,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434533084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:14:56,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56188006] [2024-11-20 13:14:56,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:14:56,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:14:56,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:14:56,218 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) [2024-11-20 13:14:56,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 13:14:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:56,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 13:14:56,576 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:14:56,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 13:14:56,608 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:14:56,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56188006] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:14:56,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:14:56,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2024-11-20 13:14:56,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262371932] [2024-11-20 13:14:56,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:14:56,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 13:14:56,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:14:56,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 13:14:56,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 13:14:56,611 INFO L87 Difference]: Start difference. First operand 659 states and 935 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:14:56,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:14:56,652 INFO L93 Difference]: Finished difference Result 1221 states and 1746 transitions. [2024-11-20 13:14:56,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 13:14:56,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 103 [2024-11-20 13:14:56,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:14:56,656 INFO L225 Difference]: With dead ends: 1221 [2024-11-20 13:14:56,657 INFO L226 Difference]: Without dead ends: 662 [2024-11-20 13:14:56,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 13:14:56,659 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 [2024-11-20 13:14:56,660 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] [2024-11-20 13:14:56,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2024-11-20 13:14:56,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 662. [2024-11-20 13:14:56,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 635 states have (on average 1.411023622047244) internal successors, (896), 652 states have internal predecessors, (896), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-20 13:14:56,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 939 transitions. [2024-11-20 13:14:56,690 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 939 transitions. Word has length 103 [2024-11-20 13:14:56,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:14:56,691 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 939 transitions. [2024-11-20 13:14:56,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:14:56,692 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 939 transitions. [2024-11-20 13:14:56,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-20 13:14:56,694 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:14:56,694 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:14:56,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 13:14:56,894 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 [2024-11-20 13:14:56,895 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:14:56,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:14:56,896 INFO L85 PathProgramCache]: Analyzing trace with hash 121408771, now seen corresponding path program 1 times [2024-11-20 13:14:56,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:14:56,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189457206] [2024-11-20 13:14:56,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:14:56,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:14:57,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:57,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-20 13:14:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:57,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-20 13:14:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:57,458 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 13:14:57,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:14:57,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189457206] [2024-11-20 13:14:57,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189457206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:14:57,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404880697] [2024-11-20 13:14:57,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:14:57,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:14:57,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:14:57,460 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) [2024-11-20 13:14:57,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 13:14:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:14:58,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-20 13:14:58,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:15:07,975 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-20 13:15:07,975 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:15:07,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404880697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:15:07,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:15:07,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-11-20 13:15:07,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438658967] [2024-11-20 13:15:07,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:15:07,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 13:15:07,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:15:07,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 13:15:07,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-20 13:15:07,977 INFO L87 Difference]: Start difference. First operand 662 states and 939 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:15:09,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-20 13:15:13,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.04s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-20 13:15:13,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:15:13,307 INFO L93 Difference]: Finished difference Result 1271 states and 1819 transitions. [2024-11-20 13:15:13,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 13:15:13,308 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 105 [2024-11-20 13:15:13,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:15:13,311 INFO L225 Difference]: With dead ends: 1271 [2024-11-20 13:15:13,311 INFO L226 Difference]: Without dead ends: 672 [2024-11-20 13:15:13,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-20 13:15:13,313 INFO L432 NwaCegarLoop]: 537 mSDtfsCounter, 12 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 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, 5.3s IncrementalHoareTripleChecker+Time [2024-11-20 13:15:13,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2873 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-20 13:15:13,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2024-11-20 13:15:13,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 662. [2024-11-20 13:15:13,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 635 states have (on average 1.411023622047244) internal successors, (896), 652 states have internal predecessors, (896), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-20 13:15:13,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 939 transitions. [2024-11-20 13:15:13,335 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 939 transitions. Word has length 105 [2024-11-20 13:15:13,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:15:13,335 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 939 transitions. [2024-11-20 13:15:13,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:15:13,336 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 939 transitions. [2024-11-20 13:15:13,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-20 13:15:13,337 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:15:13,337 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] [2024-11-20 13:15:13,354 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 13:15:13,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-20 13:15:13,542 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:15:13,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:15:13,542 INFO L85 PathProgramCache]: Analyzing trace with hash -23162637, now seen corresponding path program 1 times [2024-11-20 13:15:13,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:15:13,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209063596] [2024-11-20 13:15:13,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:15:13,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:15:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:15:14,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-20 13:15:14,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:15:14,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-20 13:15:14,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:15:14,040 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-20 13:15:14,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:15:14,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209063596] [2024-11-20 13:15:14,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209063596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:15:14,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 13:15:14,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-20 13:15:14,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133000553] [2024-11-20 13:15:14,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:15:14,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 13:15:14,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:15:14,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 13:15:14,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-20 13:15:14,043 INFO L87 Difference]: Start difference. First operand 662 states and 939 transitions. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:15:15,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:15:15,216 INFO L93 Difference]: Finished difference Result 1293 states and 1848 transitions. [2024-11-20 13:15:15,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 13:15:15,217 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 107 [2024-11-20 13:15:15,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:15:15,220 INFO L225 Difference]: With dead ends: 1293 [2024-11-20 13:15:15,221 INFO L226 Difference]: Without dead ends: 694 [2024-11-20 13:15:15,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-20 13:15:15,223 INFO L432 NwaCegarLoop]: 469 mSDtfsCounter, 79 mSDsluCounter, 3249 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 3718 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-20 13:15:15,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 3718 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1291 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-20 13:15:15,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2024-11-20 13:15:15,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 682. [2024-11-20 13:15:15,246 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) [2024-11-20 13:15:15,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 963 transitions. [2024-11-20 13:15:15,249 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 963 transitions. Word has length 107 [2024-11-20 13:15:15,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:15:15,249 INFO L471 AbstractCegarLoop]: Abstraction has 682 states and 963 transitions. [2024-11-20 13:15:15,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:15:15,250 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 963 transitions. [2024-11-20 13:15:15,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-20 13:15:15,251 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:15:15,251 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] [2024-11-20 13:15:15,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-20 13:15:15,251 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:15:15,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:15:15,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1904772393, now seen corresponding path program 1 times [2024-11-20 13:15:15,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:15:15,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015604232] [2024-11-20 13:15:15,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:15:15,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:15:15,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:15:15,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-20 13:15:15,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:15:15,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-20 13:15:15,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:15:15,709 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 13:15:15,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:15:15,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015604232] [2024-11-20 13:15:15,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015604232] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:15:15,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987026203] [2024-11-20 13:15:15,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:15:15,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:15:15,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:15:15,712 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) [2024-11-20 13:15:15,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 13:15:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:15:16,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-20 13:15:16,375 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:15:16,871 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-20 13:15:16,871 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:15:16,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987026203] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:15:16,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:15:16,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2024-11-20 13:15:16,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242387964] [2024-11-20 13:15:16,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:15:16,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-20 13:15:16,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:15:16,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-20 13:15:16,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-11-20 13:15:16,874 INFO L87 Difference]: Start difference. First operand 682 states and 963 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), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:15:17,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:15:17,821 INFO L93 Difference]: Finished difference Result 1321 states and 1882 transitions. [2024-11-20 13:15:17,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 13:15:17,822 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), 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 107 [2024-11-20 13:15:17,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:15:17,826 INFO L225 Difference]: With dead ends: 1321 [2024-11-20 13:15:17,827 INFO L226 Difference]: Without dead ends: 712 [2024-11-20 13:15:17,828 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-11-20 13:15:17,829 INFO L432 NwaCegarLoop]: 538 mSDtfsCounter, 17 mSDsluCounter, 3759 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4297 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-20 13:15:17,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4297 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-20 13:15:17,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2024-11-20 13:15:17,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 706. [2024-11-20 13:15:17,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 679 states have (on average 1.3991163475699557) internal successors, (950), 696 states have internal predecessors, (950), 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) [2024-11-20 13:15:17,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 993 transitions. [2024-11-20 13:15:17,855 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 993 transitions. Word has length 107 [2024-11-20 13:15:17,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:15:17,855 INFO L471 AbstractCegarLoop]: Abstraction has 706 states and 993 transitions. [2024-11-20 13:15:17,856 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), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-20 13:15:17,856 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 993 transitions. [2024-11-20 13:15:17,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-20 13:15:17,857 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:15:17,857 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] [2024-11-20 13:15:17,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-20 13:15:18,058 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 [2024-11-20 13:15:18,059 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:15:18,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:15:18,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1186694878, now seen corresponding path program 1 times [2024-11-20 13:15:18,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:15:18,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606291890] [2024-11-20 13:15:18,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:15:18,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:15:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:15:18,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-20 13:15:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:15:18,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-20 13:15:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:15:18,461 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 13:15:18,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:15:18,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606291890] [2024-11-20 13:15:18,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606291890] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:15:18,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795939587] [2024-11-20 13:15:18,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:15:18,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:15:18,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:15:18,465 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) [2024-11-20 13:15:18,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 13:15:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:15:19,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-20 13:15:19,102 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:15:19,343 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-20 13:15:19,343 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:15:19,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795939587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:15:19,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:15:19,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-11-20 13:15:19,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913361950] [2024-11-20 13:15:19,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:15:19,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 13:15:19,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:15:19,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 13:15:19,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-20 13:15:19,346 INFO L87 Difference]: Start difference. First operand 706 states and 993 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) [2024-11-20 13:15:19,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:15:19,705 INFO L93 Difference]: Finished difference Result 1337 states and 1900 transitions. [2024-11-20 13:15:19,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 13:15:19,706 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 107 [2024-11-20 13:15:19,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:15:19,710 INFO L225 Difference]: With dead ends: 1337 [2024-11-20 13:15:19,710 INFO L226 Difference]: Without dead ends: 716 [2024-11-20 13:15:19,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-20 13:15:19,712 INFO L432 NwaCegarLoop]: 537 mSDtfsCounter, 10 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2873 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 13:15:19,713 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2873 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 13:15:19,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2024-11-20 13:15:19,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 706. [2024-11-20 13:15:19,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 679 states have (on average 1.3991163475699557) internal successors, (950), 696 states have internal predecessors, (950), 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) [2024-11-20 13:15:19,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 993 transitions. [2024-11-20 13:15:19,736 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 993 transitions. Word has length 107 [2024-11-20 13:15:19,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:15:19,736 INFO L471 AbstractCegarLoop]: Abstraction has 706 states and 993 transitions. [2024-11-20 13:15:19,736 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) [2024-11-20 13:15:19,736 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 993 transitions. [2024-11-20 13:15:19,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-20 13:15:19,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:15:19,738 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 13:15:19,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-20 13:15:19,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:15:19,942 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:15:19,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:15:19,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1769047362, now seen corresponding path program 1 times [2024-11-20 13:15:19,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:15:19,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289051816] [2024-11-20 13:15:19,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:15:19,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:15:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:15:20,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-20 13:15:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:15:20,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-20 13:15:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:15:20,408 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 13:15:20,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:15:20,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289051816] [2024-11-20 13:15:20,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289051816] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:15:20,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689996548] [2024-11-20 13:15:20,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:15:20,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:15:20,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:15:20,412 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) [2024-11-20 13:15:20,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 13:15:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:15:20,925 INFO L255 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-20 13:15:20,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:15:20,961 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 13:15:20,961 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 13:15:21,060 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-20 13:15:21,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689996548] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 13:15:21,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 13:15:21,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-20 13:15:21,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252461650] [2024-11-20 13:15:21,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 13:15:21,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 13:15:21,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:15:21,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 13:15:21,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-20 13:15:21,062 INFO L87 Difference]: Start difference. First operand 706 states and 993 transitions. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 10 states have internal predecessors, (115), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 13:15:21,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:15:21,711 INFO L93 Difference]: Finished difference Result 1301 states and 1848 transitions. [2024-11-20 13:15:21,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 13:15:21,712 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 10 states have internal predecessors, (115), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 108 [2024-11-20 13:15:21,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:15:21,716 INFO L225 Difference]: With dead ends: 1301 [2024-11-20 13:15:21,716 INFO L226 Difference]: Without dead ends: 717 [2024-11-20 13:15:21,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2024-11-20 13:15:21,718 INFO L432 NwaCegarLoop]: 481 mSDtfsCounter, 60 mSDsluCounter, 2312 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2793 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 13:15:21,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2793 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 13:15:21,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2024-11-20 13:15:21,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 715. [2024-11-20 13:15:21,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 687 states have (on average 1.4032023289665212) internal successors, (964), 704 states have internal predecessors, (964), 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) [2024-11-20 13:15:21,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1007 transitions. [2024-11-20 13:15:21,743 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1007 transitions. Word has length 108 [2024-11-20 13:15:21,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:15:21,743 INFO L471 AbstractCegarLoop]: Abstraction has 715 states and 1007 transitions. [2024-11-20 13:15:21,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 10 states have internal predecessors, (115), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-20 13:15:21,743 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1007 transitions. [2024-11-20 13:15:21,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-20 13:15:21,744 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:15:21,745 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] [2024-11-20 13:15:21,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-20 13:15:21,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-20 13:15:21,946 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:15:21,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:15:21,946 INFO L85 PathProgramCache]: Analyzing trace with hash -32224860, now seen corresponding path program 2 times [2024-11-20 13:15:21,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:15:21,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054732815] [2024-11-20 13:15:21,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:15:21,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:15:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:15:22,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-20 13:15:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:15:22,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-20 13:15:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:15:22,497 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:15:22,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:15:22,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054732815] [2024-11-20 13:15:22,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054732815] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:15:22,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733283403] [2024-11-20 13:15:22,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 13:15:22,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:15:22,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:15:22,500 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) [2024-11-20 13:15:22,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 13:15:24,097 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 13:15:24,097 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 13:15:24,102 INFO L255 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-20 13:15:24,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:15:24,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-20 13:15:24,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-20 13:15:25,083 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-20 13:15:25,083 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 13:15:25,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733283403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 13:15:25,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 13:15:25,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [9] total 19 [2024-11-20 13:15:25,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693186153] [2024-11-20 13:15:25,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 13:15:25,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 13:15:25,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 13:15:25,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 13:15:25,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2024-11-20 13:15:25,086 INFO L87 Difference]: Start difference. First operand 715 states and 1007 transitions. Second operand has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 12 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) [2024-11-20 13:15:26,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 13:15:26,766 INFO L93 Difference]: Finished difference Result 1421 states and 2008 transitions. [2024-11-20 13:15:26,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 13:15:26,767 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 12 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 112 [2024-11-20 13:15:26,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 13:15:26,771 INFO L225 Difference]: With dead ends: 1421 [2024-11-20 13:15:26,771 INFO L226 Difference]: Without dead ends: 781 [2024-11-20 13:15:26,772 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2024-11-20 13:15:26,773 INFO L432 NwaCegarLoop]: 526 mSDtfsCounter, 313 mSDsluCounter, 3657 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 4183 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-20 13:15:26,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 4183 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-20 13:15:26,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2024-11-20 13:15:26,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 702. [2024-11-20 13:15:26,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 674 states have (on average 1.4065281899109792) internal successors, (948), 691 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) [2024-11-20 13:15:26,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 991 transitions. [2024-11-20 13:15:26,794 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 991 transitions. Word has length 112 [2024-11-20 13:15:26,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 13:15:26,795 INFO L471 AbstractCegarLoop]: Abstraction has 702 states and 991 transitions. [2024-11-20 13:15:26,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 12 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) [2024-11-20 13:15:26,795 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 991 transitions. [2024-11-20 13:15:26,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-20 13:15:26,796 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 13:15:26,796 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] [2024-11-20 13:15:26,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-20 13:15:26,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-20 13:15:26,997 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-20 13:15:26,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 13:15:26,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1284116928, now seen corresponding path program 1 times [2024-11-20 13:15:26,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 13:15:26,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040599718] [2024-11-20 13:15:26,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:15:26,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 13:15:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:15:27,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-20 13:15:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:15:27,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-20 13:15:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:15:27,552 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 13:15:27,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 13:15:27,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040599718] [2024-11-20 13:15:27,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040599718] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 13:15:27,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389410209] [2024-11-20 13:15:27,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 13:15:27,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 13:15:27,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 13:15:27,556 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) [2024-11-20 13:15:27,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 13:15:28,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 13:15:28,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 103 conjuncts are in the unsatisfiable core [2024-11-20 13:15:28,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 13:15:28,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-20 13:15:28,213 INFO L349 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2024-11-20 13:15:28,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2024-11-20 13:15:28,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-20 13:15:28,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-20 13:15:28,439 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-20 13:15:28,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41