./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.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 c9492eb5ff634b400a7a5ea3f7f2cefeb5465f9e5361bb81d240cec0c0c035af --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 16:28:38,419 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 16:28:38,467 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 16:28:38,471 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 16:28:38,472 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 16:28:38,493 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 16:28:38,493 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 16:28:38,494 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 16:28:38,494 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 16:28:38,496 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 16:28:38,497 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 16:28:38,497 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 16:28:38,497 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 16:28:38,497 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 16:28:38,498 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 16:28:38,498 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 16:28:38,498 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 16:28:38,498 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 16:28:38,499 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 16:28:38,499 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 16:28:38,499 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 16:28:38,499 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 16:28:38,500 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 16:28:38,500 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 16:28:38,500 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 16:28:38,500 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 16:28:38,500 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 16:28:38,500 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 16:28:38,501 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 16:28:38,501 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 16:28:38,501 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 16:28:38,501 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 16:28:38,501 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 16:28:38,502 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 16:28:38,502 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 16:28:38,502 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 16:28:38,502 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 16:28:38,502 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 16:28:38,502 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 16:28:38,502 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 16:28:38,502 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 16:28:38,503 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 16:28:38,503 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9492eb5ff634b400a7a5ea3f7f2cefeb5465f9e5361bb81d240cec0c0c035af [2024-10-14 16:28:38,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 16:28:38,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 16:28:38,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 16:28:38,746 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 16:28:38,747 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 16:28:38,748 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i [2024-10-14 16:28:40,096 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 16:28:40,327 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 16:28:40,328 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i [2024-10-14 16:28:40,353 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61d57770a/4a05172ab2eb4006a474ec7341df08c5/FLAG7bbe13297 [2024-10-14 16:28:40,370 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/61d57770a/4a05172ab2eb4006a474ec7341df08c5 [2024-10-14 16:28:40,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 16:28:40,374 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 16:28:40,375 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 16:28:40,375 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 16:28:40,380 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 16:28:40,380 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:28:40" (1/1) ... [2024-10-14 16:28:40,382 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b6769e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:28:40, skipping insertion in model container [2024-10-14 16:28:40,383 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:28:40" (1/1) ... [2024-10-14 16:28:40,425 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 16:28:40,784 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i[33022,33035] [2024-10-14 16:28:40,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 16:28:40,993 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 16:28:41,017 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i[33022,33035] [2024-10-14 16:28:41,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 16:28:41,104 INFO L204 MainTranslator]: Completed translation [2024-10-14 16:28:41,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:28:41 WrapperNode [2024-10-14 16:28:41,105 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 16:28:41,106 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 16:28:41,106 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 16:28:41,106 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 16:28:41,111 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:28:41" (1/1) ... [2024-10-14 16:28:41,148 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:28:41" (1/1) ... [2024-10-14 16:28:41,236 INFO L138 Inliner]: procedures = 177, calls = 605, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3725 [2024-10-14 16:28:41,237 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 16:28:41,238 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 16:28:41,238 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 16:28:41,238 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 16:28:41,247 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:28:41" (1/1) ... [2024-10-14 16:28:41,247 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:28:41" (1/1) ... [2024-10-14 16:28:41,262 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:28:41" (1/1) ... [2024-10-14 16:28:41,422 INFO L175 MemorySlicer]: Split 574 memory accesses to 3 slices as follows [2, 466, 106]. 81 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 102 writes are split as follows [0, 98, 4]. [2024-10-14 16:28:41,423 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:28:41" (1/1) ... [2024-10-14 16:28:41,423 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:28:41" (1/1) ... [2024-10-14 16:28:41,474 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:28:41" (1/1) ... [2024-10-14 16:28:41,503 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:28:41" (1/1) ... [2024-10-14 16:28:41,519 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:28:41" (1/1) ... [2024-10-14 16:28:41,532 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:28:41" (1/1) ... [2024-10-14 16:28:41,549 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 16:28:41,550 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 16:28:41,551 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 16:28:41,551 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 16:28:41,552 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:28:41" (1/1) ... [2024-10-14 16:28:41,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 16:28:41,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:28:41,585 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 16:28:41,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 16:28:41,629 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2024-10-14 16:28:41,629 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2024-10-14 16:28:41,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 16:28:41,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 16:28:41,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-14 16:28:41,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-14 16:28:41,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-14 16:28:41,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 16:28:41,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 16:28:41,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-14 16:28:41,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-14 16:28:41,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-14 16:28:41,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-10-14 16:28:41,632 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-14 16:28:41,632 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-14 16:28:41,632 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-10-14 16:28:41,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 16:28:41,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 16:28:41,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-14 16:28:41,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-14 16:28:41,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-14 16:28:41,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 16:28:41,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-14 16:28:41,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-14 16:28:41,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-14 16:28:41,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 16:28:41,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 16:28:41,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 16:28:41,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 16:28:41,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 16:28:41,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 16:28:41,846 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 16:28:41,848 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 16:28:44,170 INFO L? ?]: Removed 823 outVars from TransFormulas that were not future-live. [2024-10-14 16:28:44,170 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 16:28:44,238 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 16:28:44,238 INFO L314 CfgBuilder]: Removed 168 assume(true) statements. [2024-10-14 16:28:44,239 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:28:44 BoogieIcfgContainer [2024-10-14 16:28:44,239 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 16:28:44,240 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 16:28:44,241 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 16:28:44,243 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 16:28:44,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:28:40" (1/3) ... [2024-10-14 16:28:44,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69790500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:28:44, skipping insertion in model container [2024-10-14 16:28:44,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:28:41" (2/3) ... [2024-10-14 16:28:44,245 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69790500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:28:44, skipping insertion in model container [2024-10-14 16:28:44,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:28:44" (3/3) ... [2024-10-14 16:28:44,246 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test10-3.i [2024-10-14 16:28:44,261 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 16:28:44,261 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 16:28:44,348 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:28:44,356 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;@45025bbc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:28:44,356 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 16:28:44,366 INFO L276 IsEmpty]: Start isEmpty. Operand has 1086 states, 1067 states have (on average 1.6326148078725398) internal successors, (1742), 1072 states have internal predecessors, (1742), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-14 16:28:44,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-14 16:28:44,375 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:28:44,376 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:28:44,377 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:28:44,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:28:44,382 INFO L85 PathProgramCache]: Analyzing trace with hash 599259722, now seen corresponding path program 1 times [2024-10-14 16:28:44,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:28:44,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780374930] [2024-10-14 16:28:44,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:28:44,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:28:44,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:44,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:28:44,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:28:44,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780374930] [2024-10-14 16:28:44,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780374930] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:28:44,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:28:44,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 16:28:44,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907154885] [2024-10-14 16:28:44,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:28:44,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 16:28:44,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:28:44,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 16:28:44,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 16:28:44,587 INFO L87 Difference]: Start difference. First operand has 1086 states, 1067 states have (on average 1.6326148078725398) internal successors, (1742), 1072 states have internal predecessors, (1742), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (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) [2024-10-14 16:28:44,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:28:44,711 INFO L93 Difference]: Finished difference Result 2171 states and 3547 transitions. [2024-10-14 16:28:44,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 16:28:44,713 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (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 12 [2024-10-14 16:28:44,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:28:44,733 INFO L225 Difference]: With dead ends: 2171 [2024-10-14 16:28:44,733 INFO L226 Difference]: Without dead ends: 1023 [2024-10-14 16:28:44,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 16:28:44,744 INFO L432 NwaCegarLoop]: 1589 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1589 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 16:28:44,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1589 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 16:28:44,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2024-10-14 16:28:44,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 1023. [2024-10-14 16:28:44,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 1005 states have (on average 1.4736318407960198) internal successors, (1481), 1010 states have internal predecessors, (1481), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-14 16:28:44,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1508 transitions. [2024-10-14 16:28:44,825 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1508 transitions. Word has length 12 [2024-10-14 16:28:44,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:28:44,825 INFO L471 AbstractCegarLoop]: Abstraction has 1023 states and 1508 transitions. [2024-10-14 16:28:44,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (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) [2024-10-14 16:28:44,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1508 transitions. [2024-10-14 16:28:44,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-14 16:28:44,830 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:28:44,830 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:28:44,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 16:28:44,831 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:28:44,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:28:44,831 INFO L85 PathProgramCache]: Analyzing trace with hash 911090950, now seen corresponding path program 1 times [2024-10-14 16:28:44,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:28:44,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932563029] [2024-10-14 16:28:44,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:28:44,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:28:44,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:45,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:28:45,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:28:45,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932563029] [2024-10-14 16:28:45,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932563029] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:28:45,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:28:45,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 16:28:45,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315759421] [2024-10-14 16:28:45,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:28:45,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 16:28:45,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:28:45,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 16:28:45,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 16:28:45,195 INFO L87 Difference]: Start difference. First operand 1023 states and 1508 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-10-14 16:28:45,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:28:45,362 INFO L93 Difference]: Finished difference Result 2042 states and 3012 transitions. [2024-10-14 16:28:45,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 16:28:45,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 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 67 [2024-10-14 16:28:45,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:28:45,371 INFO L225 Difference]: With dead ends: 2042 [2024-10-14 16:28:45,372 INFO L226 Difference]: Without dead ends: 1409 [2024-10-14 16:28:45,374 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 16:28:45,375 INFO L432 NwaCegarLoop]: 1587 mSDtfsCounter, 548 mSDsluCounter, 3024 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 4611 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 16:28:45,375 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 4611 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 16:28:45,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2024-10-14 16:28:45,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1025. [2024-10-14 16:28:45,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 1007 states have (on average 1.4726911618669314) internal successors, (1483), 1012 states have internal predecessors, (1483), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-14 16:28:45,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1510 transitions. [2024-10-14 16:28:45,418 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1510 transitions. Word has length 67 [2024-10-14 16:28:45,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:28:45,419 INFO L471 AbstractCegarLoop]: Abstraction has 1025 states and 1510 transitions. [2024-10-14 16:28:45,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-10-14 16:28:45,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1510 transitions. [2024-10-14 16:28:45,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-10-14 16:28:45,427 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:28:45,427 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:28:45,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 16:28:45,427 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:28:45,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:28:45,428 INFO L85 PathProgramCache]: Analyzing trace with hash 2132763725, now seen corresponding path program 1 times [2024-10-14 16:28:45,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:28:45,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266039033] [2024-10-14 16:28:45,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:28:45,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:28:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:45,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:28:45,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:28:45,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266039033] [2024-10-14 16:28:45,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266039033] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:28:45,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:28:45,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 16:28:45,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485333120] [2024-10-14 16:28:45,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:28:45,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 16:28:45,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:28:45,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 16:28:45,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 16:28:45,853 INFO L87 Difference]: Start difference. First operand 1025 states and 1510 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 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) [2024-10-14 16:28:46,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:28:46,034 INFO L93 Difference]: Finished difference Result 2431 states and 3576 transitions. [2024-10-14 16:28:46,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 16:28:46,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 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 144 [2024-10-14 16:28:46,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:28:46,043 INFO L225 Difference]: With dead ends: 2431 [2024-10-14 16:28:46,043 INFO L226 Difference]: Without dead ends: 1409 [2024-10-14 16:28:46,046 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 16:28:46,049 INFO L432 NwaCegarLoop]: 1548 mSDtfsCounter, 544 mSDsluCounter, 2985 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 4533 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 16:28:46,050 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 4533 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 16:28:46,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2024-10-14 16:28:46,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1028. [2024-10-14 16:28:46,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1010 states have (on average 1.4712871287128713) internal successors, (1486), 1015 states have internal predecessors, (1486), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-14 16:28:46,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1513 transitions. [2024-10-14 16:28:46,079 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1513 transitions. Word has length 144 [2024-10-14 16:28:46,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:28:46,079 INFO L471 AbstractCegarLoop]: Abstraction has 1028 states and 1513 transitions. [2024-10-14 16:28:46,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 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) [2024-10-14 16:28:46,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1513 transitions. [2024-10-14 16:28:46,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-10-14 16:28:46,083 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:28:46,083 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:28:46,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 16:28:46,083 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:28:46,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:28:46,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1900156445, now seen corresponding path program 1 times [2024-10-14 16:28:46,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:28:46,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263653619] [2024-10-14 16:28:46,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:28:46,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:28:46,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:46,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:28:46,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:28:46,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263653619] [2024-10-14 16:28:46,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263653619] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:28:46,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:28:46,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 16:28:46,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810581763] [2024-10-14 16:28:46,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:28:46,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 16:28:46,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:28:46,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 16:28:46,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 16:28:46,453 INFO L87 Difference]: Start difference. First operand 1028 states and 1513 transitions. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 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) [2024-10-14 16:28:46,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:28:46,537 INFO L93 Difference]: Finished difference Result 2008 states and 2954 transitions. [2024-10-14 16:28:46,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 16:28:46,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 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 215 [2024-10-14 16:28:46,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:28:46,541 INFO L225 Difference]: With dead ends: 2008 [2024-10-14 16:28:46,541 INFO L226 Difference]: Without dead ends: 986 [2024-10-14 16:28:46,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 16:28:46,544 INFO L432 NwaCegarLoop]: 1403 mSDtfsCounter, 30 mSDsluCounter, 2789 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 4192 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 16:28:46,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 4192 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 16:28:46,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2024-10-14 16:28:46,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 986. [2024-10-14 16:28:46,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 986 states, 968 states have (on average 1.4555785123966942) internal successors, (1409), 973 states have internal predecessors, (1409), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-14 16:28:46,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1436 transitions. [2024-10-14 16:28:46,566 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1436 transitions. Word has length 215 [2024-10-14 16:28:46,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:28:46,567 INFO L471 AbstractCegarLoop]: Abstraction has 986 states and 1436 transitions. [2024-10-14 16:28:46,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 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) [2024-10-14 16:28:46,568 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1436 transitions. [2024-10-14 16:28:46,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-10-14 16:28:46,570 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:28:46,570 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:28:46,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 16:28:46,571 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:28:46,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:28:46,571 INFO L85 PathProgramCache]: Analyzing trace with hash -648922665, now seen corresponding path program 1 times [2024-10-14 16:28:46,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:28:46,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85589045] [2024-10-14 16:28:46,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:28:46,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:28:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:46,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:28:46,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:28:46,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85589045] [2024-10-14 16:28:46,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85589045] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:28:46,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:28:46,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 16:28:46,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991744961] [2024-10-14 16:28:46,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:28:46,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 16:28:46,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:28:46,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 16:28:46,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 16:28:46,771 INFO L87 Difference]: Start difference. First operand 986 states and 1436 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 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) [2024-10-14 16:28:46,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:28:46,861 INFO L93 Difference]: Finished difference Result 2497 states and 3649 transitions. [2024-10-14 16:28:46,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 16:28:46,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 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 215 [2024-10-14 16:28:46,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:28:46,867 INFO L225 Difference]: With dead ends: 2497 [2024-10-14 16:28:46,868 INFO L226 Difference]: Without dead ends: 1517 [2024-10-14 16:28:46,869 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 16:28:46,870 INFO L432 NwaCegarLoop]: 1420 mSDtfsCounter, 716 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 2823 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 16:28:46,871 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 2823 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 16:28:46,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1517 states. [2024-10-14 16:28:46,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1517 to 1358. [2024-10-14 16:28:46,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 1338 states have (on average 1.4581464872944694) internal successors, (1951), 1343 states have internal predecessors, (1951), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 16:28:46,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 1982 transitions. [2024-10-14 16:28:46,896 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 1982 transitions. Word has length 215 [2024-10-14 16:28:46,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:28:46,896 INFO L471 AbstractCegarLoop]: Abstraction has 1358 states and 1982 transitions. [2024-10-14 16:28:46,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 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) [2024-10-14 16:28:46,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 1982 transitions. [2024-10-14 16:28:46,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-10-14 16:28:46,899 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:28:46,899 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:28:46,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 16:28:46,900 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:28:46,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:28:46,900 INFO L85 PathProgramCache]: Analyzing trace with hash -499466754, now seen corresponding path program 1 times [2024-10-14 16:28:46,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:28:46,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821674302] [2024-10-14 16:28:46,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:28:46,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:28:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:47,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-14 16:28:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:47,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-14 16:28:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:47,313 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:28:47,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:28:47,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821674302] [2024-10-14 16:28:47,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821674302] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:28:47,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:28:47,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 16:28:47,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005493823] [2024-10-14 16:28:47,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:28:47,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 16:28:47,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:28:47,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 16:28:47,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 16:28:47,316 INFO L87 Difference]: Start difference. First operand 1358 states and 1982 transitions. Second operand has 5 states, 5 states have (on average 44.0) internal successors, (220), 4 states have internal predecessors, (220), 2 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) [2024-10-14 16:28:47,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:28:47,748 INFO L93 Difference]: Finished difference Result 2585 states and 3784 transitions. [2024-10-14 16:28:47,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 16:28:47,749 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 4 states have internal predecessors, (220), 2 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 228 [2024-10-14 16:28:47,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:28:47,754 INFO L225 Difference]: With dead ends: 2585 [2024-10-14 16:28:47,754 INFO L226 Difference]: Without dead ends: 1318 [2024-10-14 16:28:47,756 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 16:28:47,757 INFO L432 NwaCegarLoop]: 1297 mSDtfsCounter, 51 mSDsluCounter, 3741 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 5038 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 16:28:47,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 5038 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 16:28:47,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2024-10-14 16:28:47,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1316. [2024-10-14 16:28:47,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 1296 states have (on average 1.4459876543209877) internal successors, (1874), 1301 states have internal predecessors, (1874), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 16:28:47,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1905 transitions. [2024-10-14 16:28:47,781 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1905 transitions. Word has length 228 [2024-10-14 16:28:47,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:28:47,782 INFO L471 AbstractCegarLoop]: Abstraction has 1316 states and 1905 transitions. [2024-10-14 16:28:47,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 4 states have internal predecessors, (220), 2 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) [2024-10-14 16:28:47,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1905 transitions. [2024-10-14 16:28:47,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-10-14 16:28:47,784 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:28:47,784 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:28:47,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 16:28:47,785 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:28:47,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:28:47,785 INFO L85 PathProgramCache]: Analyzing trace with hash -875273718, now seen corresponding path program 1 times [2024-10-14 16:28:47,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:28:47,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051280075] [2024-10-14 16:28:47,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:28:47,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:28:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:48,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-14 16:28:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:48,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-14 16:28:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:48,036 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:28:48,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:28:48,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051280075] [2024-10-14 16:28:48,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051280075] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:28:48,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:28:48,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 16:28:48,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146154034] [2024-10-14 16:28:48,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:28:48,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 16:28:48,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:28:48,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 16:28:48,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 16:28:48,039 INFO L87 Difference]: Start difference. First operand 1316 states and 1905 transitions. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 2 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) [2024-10-14 16:28:48,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:28:48,538 INFO L93 Difference]: Finished difference Result 2543 states and 3696 transitions. [2024-10-14 16:28:48,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 16:28:48,538 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 2 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 228 [2024-10-14 16:28:48,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:28:48,546 INFO L225 Difference]: With dead ends: 2543 [2024-10-14 16:28:48,546 INFO L226 Difference]: Without dead ends: 1318 [2024-10-14 16:28:48,548 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 16:28:48,549 INFO L432 NwaCegarLoop]: 1310 mSDtfsCounter, 22 mSDsluCounter, 2472 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3782 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-14 16:28:48,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3782 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-14 16:28:48,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2024-10-14 16:28:48,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1316. [2024-10-14 16:28:48,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 1296 states have (on average 1.4436728395061729) internal successors, (1871), 1301 states have internal predecessors, (1871), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-14 16:28:48,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1902 transitions. [2024-10-14 16:28:48,579 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1902 transitions. Word has length 228 [2024-10-14 16:28:48,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:28:48,580 INFO L471 AbstractCegarLoop]: Abstraction has 1316 states and 1902 transitions. [2024-10-14 16:28:48,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 2 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) [2024-10-14 16:28:48,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1902 transitions. [2024-10-14 16:28:48,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-10-14 16:28:48,584 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:28:48,584 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:28:48,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 16:28:48,584 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:28:48,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:28:48,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1692548616, now seen corresponding path program 1 times [2024-10-14 16:28:48,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:28:48,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318608175] [2024-10-14 16:28:48,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:28:48,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:28:48,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:48,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-14 16:28:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:48,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-14 16:28:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:48,832 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:28:48,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:28:48,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318608175] [2024-10-14 16:28:48,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318608175] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:28:48,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:28:48,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 16:28:48,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178997684] [2024-10-14 16:28:48,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:28:48,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 16:28:48,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:28:48,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 16:28:48,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 16:28:48,835 INFO L87 Difference]: Start difference. First operand 1316 states and 1902 transitions. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 2 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) [2024-10-14 16:28:49,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:28:49,229 INFO L93 Difference]: Finished difference Result 3114 states and 4524 transitions. [2024-10-14 16:28:49,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 16:28:49,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 2 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 228 [2024-10-14 16:28:49,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:28:49,235 INFO L225 Difference]: With dead ends: 3114 [2024-10-14 16:28:49,236 INFO L226 Difference]: Without dead ends: 1889 [2024-10-14 16:28:49,238 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 16:28:49,238 INFO L432 NwaCegarLoop]: 1314 mSDtfsCounter, 618 mSDsluCounter, 2482 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 3796 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 16:28:49,238 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 3796 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 16:28:49,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2024-10-14 16:28:49,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1882. [2024-10-14 16:28:49,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1856 states have (on average 1.4455818965517242) internal successors, (2683), 1861 states have internal predecessors, (2683), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-14 16:28:49,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 2726 transitions. [2024-10-14 16:28:49,286 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 2726 transitions. Word has length 228 [2024-10-14 16:28:49,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:28:49,289 INFO L471 AbstractCegarLoop]: Abstraction has 1882 states and 2726 transitions. [2024-10-14 16:28:49,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 2 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) [2024-10-14 16:28:49,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 2726 transitions. [2024-10-14 16:28:49,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-10-14 16:28:49,292 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:28:49,292 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:28:49,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 16:28:49,292 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:28:49,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:28:49,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1864865738, now seen corresponding path program 1 times [2024-10-14 16:28:49,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:28:49,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580019788] [2024-10-14 16:28:49,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:28:49,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:28:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:49,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-14 16:28:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:49,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-14 16:28:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:49,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-14 16:28:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:49,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-14 16:28:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:49,641 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-14 16:28:49,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:28:49,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580019788] [2024-10-14 16:28:49,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580019788] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:28:49,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:28:49,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 16:28:49,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810278690] [2024-10-14 16:28:49,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:28:49,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 16:28:49,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:28:49,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 16:28:49,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 16:28:49,643 INFO L87 Difference]: Start difference. First operand 1882 states and 2726 transitions. Second operand has 6 states, 6 states have (on average 37.5) internal successors, (225), 5 states have internal predecessors, (225), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-14 16:28:50,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:28:50,482 INFO L93 Difference]: Finished difference Result 4067 states and 5941 transitions. [2024-10-14 16:28:50,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 16:28:50,483 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 5 states have internal predecessors, (225), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 241 [2024-10-14 16:28:50,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:28:50,491 INFO L225 Difference]: With dead ends: 4067 [2024-10-14 16:28:50,491 INFO L226 Difference]: Without dead ends: 2422 [2024-10-14 16:28:50,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-14 16:28:50,494 INFO L432 NwaCegarLoop]: 1354 mSDtfsCounter, 3558 mSDsluCounter, 2766 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3569 SdHoareTripleChecker+Valid, 4120 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-14 16:28:50,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3569 Valid, 4120 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-14 16:28:50,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2422 states. [2024-10-14 16:28:50,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2422 to 1453. [2024-10-14 16:28:50,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 1432 states have (on average 1.4301675977653632) internal successors, (2048), 1437 states have internal predecessors, (2048), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-14 16:28:50,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 2081 transitions. [2024-10-14 16:28:50,535 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 2081 transitions. Word has length 241 [2024-10-14 16:28:50,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:28:50,536 INFO L471 AbstractCegarLoop]: Abstraction has 1453 states and 2081 transitions. [2024-10-14 16:28:50,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.5) internal successors, (225), 5 states have internal predecessors, (225), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-10-14 16:28:50,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 2081 transitions. [2024-10-14 16:28:50,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-10-14 16:28:50,540 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:28:50,540 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:28:50,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 16:28:50,541 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:28:50,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:28:50,541 INFO L85 PathProgramCache]: Analyzing trace with hash -244071330, now seen corresponding path program 1 times [2024-10-14 16:28:50,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:28:50,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506752687] [2024-10-14 16:28:50,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:28:50,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:28:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:50,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-14 16:28:50,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:50,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-14 16:28:50,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:50,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-14 16:28:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:50,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-14 16:28:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:50,835 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-14 16:28:50,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:28:50,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506752687] [2024-10-14 16:28:50,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506752687] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:28:50,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:28:50,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 16:28:50,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995829359] [2024-10-14 16:28:50,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:28:50,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 16:28:50,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:28:50,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 16:28:50,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 16:28:50,838 INFO L87 Difference]: Start difference. First operand 1453 states and 2081 transitions. Second operand has 5 states, 5 states have (on average 46.8) internal successors, (234), 4 states have internal predecessors, (234), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-14 16:28:51,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:28:51,306 INFO L93 Difference]: Finished difference Result 2323 states and 3378 transitions. [2024-10-14 16:28:51,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 16:28:51,307 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 46.8) internal successors, (234), 4 states have internal predecessors, (234), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 251 [2024-10-14 16:28:51,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:28:51,312 INFO L225 Difference]: With dead ends: 2323 [2024-10-14 16:28:51,313 INFO L226 Difference]: Without dead ends: 1458 [2024-10-14 16:28:51,314 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 16:28:51,315 INFO L432 NwaCegarLoop]: 1286 mSDtfsCounter, 126 mSDsluCounter, 3634 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 4920 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 16:28:51,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 4920 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 16:28:51,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2024-10-14 16:28:51,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1453. [2024-10-14 16:28:51,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 1432 states have (on average 1.4252793296089385) internal successors, (2041), 1437 states have internal predecessors, (2041), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-14 16:28:51,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 2074 transitions. [2024-10-14 16:28:51,373 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 2074 transitions. Word has length 251 [2024-10-14 16:28:51,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:28:51,373 INFO L471 AbstractCegarLoop]: Abstraction has 1453 states and 2074 transitions. [2024-10-14 16:28:51,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.8) internal successors, (234), 4 states have internal predecessors, (234), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-14 16:28:51,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 2074 transitions. [2024-10-14 16:28:51,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-10-14 16:28:51,375 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:28:51,375 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:28:51,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 16:28:51,376 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:28:51,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:28:51,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1333401426, now seen corresponding path program 1 times [2024-10-14 16:28:51,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:28:51,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036768239] [2024-10-14 16:28:51,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:28:51,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:28:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:51,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-14 16:28:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:51,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-14 16:28:51,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:51,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-14 16:28:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:51,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-14 16:28:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:51,635 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-10-14 16:28:51,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:28:51,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036768239] [2024-10-14 16:28:51,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036768239] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:28:51,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:28:51,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 16:28:51,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747261224] [2024-10-14 16:28:51,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:28:51,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 16:28:51,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:28:51,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 16:28:51,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 16:28:51,638 INFO L87 Difference]: Start difference. First operand 1453 states and 2074 transitions. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 3 states have internal predecessors, (234), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-14 16:28:52,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:28:52,023 INFO L93 Difference]: Finished difference Result 2310 states and 3353 transitions. [2024-10-14 16:28:52,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 16:28:52,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 3 states have internal predecessors, (234), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 251 [2024-10-14 16:28:52,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:28:52,029 INFO L225 Difference]: With dead ends: 2310 [2024-10-14 16:28:52,030 INFO L226 Difference]: Without dead ends: 1461 [2024-10-14 16:28:52,031 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 16:28:52,032 INFO L432 NwaCegarLoop]: 1301 mSDtfsCounter, 22 mSDsluCounter, 2451 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3752 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 16:28:52,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3752 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 16:28:52,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2024-10-14 16:28:52,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1459. [2024-10-14 16:28:52,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1459 states, 1438 states have (on average 1.4235048678720446) internal successors, (2047), 1443 states have internal predecessors, (2047), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-14 16:28:52,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 2080 transitions. [2024-10-14 16:28:52,065 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 2080 transitions. Word has length 251 [2024-10-14 16:28:52,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:28:52,066 INFO L471 AbstractCegarLoop]: Abstraction has 1459 states and 2080 transitions. [2024-10-14 16:28:52,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 3 states have internal predecessors, (234), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-14 16:28:52,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 2080 transitions. [2024-10-14 16:28:52,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-10-14 16:28:52,068 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:28:52,068 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:28:52,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 16:28:52,068 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:28:52,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:28:52,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1814481684, now seen corresponding path program 1 times [2024-10-14 16:28:52,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:28:52,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877948997] [2024-10-14 16:28:52,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:28:52,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:28:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:52,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-14 16:28:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:52,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-14 16:28:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:52,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-14 16:28:52,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:52,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-14 16:28:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:52,945 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-14 16:28:52,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:28:52,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877948997] [2024-10-14 16:28:52,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877948997] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:28:52,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232340026] [2024-10-14 16:28:52,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:28:52,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:28:52,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:28:52,948 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:28:52,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 16:28:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:53,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 16:28:53,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:28:53,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-14 16:28:53,943 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-14 16:28:53,957 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-14 16:28:53,957 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 16:28:54,219 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-14 16:28:54,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232340026] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 16:28:54,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 16:28:54,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2024-10-14 16:28:54,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591455544] [2024-10-14 16:28:54,220 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 16:28:54,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-14 16:28:54,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:28:54,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-14 16:28:54,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-10-14 16:28:54,239 INFO L87 Difference]: Start difference. First operand 1459 states and 2080 transitions. Second operand has 13 states, 13 states have (on average 42.92307692307692) internal successors, (558), 12 states have internal predecessors, (558), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-14 16:28:55,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:28:55,262 INFO L93 Difference]: Finished difference Result 3333 states and 4738 transitions. [2024-10-14 16:28:55,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 16:28:55,263 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 42.92307692307692) internal successors, (558), 12 states have internal predecessors, (558), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 251 [2024-10-14 16:28:55,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:28:55,276 INFO L225 Difference]: With dead ends: 3333 [2024-10-14 16:28:55,276 INFO L226 Difference]: Without dead ends: 2407 [2024-10-14 16:28:55,279 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 497 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-10-14 16:28:55,279 INFO L432 NwaCegarLoop]: 1619 mSDtfsCounter, 4078 mSDsluCounter, 8630 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4109 SdHoareTripleChecker+Valid, 10249 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-10-14 16:28:55,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4109 Valid, 10249 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-10-14 16:28:55,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2024-10-14 16:28:55,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 2112. [2024-10-14 16:28:55,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 2079 states have (on average 1.392977392977393) internal successors, (2896), 2084 states have internal predecessors, (2896), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-10-14 16:28:55,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 2951 transitions. [2024-10-14 16:28:55,347 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 2951 transitions. Word has length 251 [2024-10-14 16:28:55,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:28:55,348 INFO L471 AbstractCegarLoop]: Abstraction has 2112 states and 2951 transitions. [2024-10-14 16:28:55,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 42.92307692307692) internal successors, (558), 12 states have internal predecessors, (558), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-14 16:28:55,348 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 2951 transitions. [2024-10-14 16:28:55,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2024-10-14 16:28:55,354 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:28:55,354 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:28:55,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 16:28:55,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-14 16:28:55,555 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:28:55,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:28:55,556 INFO L85 PathProgramCache]: Analyzing trace with hash -2082889347, now seen corresponding path program 1 times [2024-10-14 16:28:55,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:28:55,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614299299] [2024-10-14 16:28:55,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:28:55,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:28:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:57,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-14 16:28:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:57,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-14 16:28:57,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:57,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-14 16:28:57,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:57,415 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-14 16:28:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:57,420 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 234 proven. 5 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2024-10-14 16:28:57,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:28:57,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614299299] [2024-10-14 16:28:57,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614299299] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:28:57,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254934258] [2024-10-14 16:28:57,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:28:57,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:28:57,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:28:57,426 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:28:57,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 16:28:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:28:58,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 2403 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 16:28:58,247 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:28:58,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-14 16:28:58,535 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-14 16:28:58,556 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 234 proven. 5 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2024-10-14 16:28:58,556 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 16:28:58,828 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 234 proven. 5 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2024-10-14 16:28:58,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254934258] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 16:28:58,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 16:28:58,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2024-10-14 16:28:58,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844779568] [2024-10-14 16:28:58,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 16:28:58,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-14 16:28:58,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:28:58,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-14 16:28:58,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-14 16:28:58,831 INFO L87 Difference]: Start difference. First operand 2112 states and 2951 transitions. Second operand has 14 states, 14 states have (on average 46.07142857142857) internal successors, (645), 13 states have internal predecessors, (645), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-14 16:28:59,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:28:59,834 INFO L93 Difference]: Finished difference Result 4073 states and 5723 transitions. [2024-10-14 16:28:59,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-14 16:28:59,835 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 46.07142857142857) internal successors, (645), 13 states have internal predecessors, (645), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 482 [2024-10-14 16:28:59,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:28:59,843 INFO L225 Difference]: With dead ends: 4073 [2024-10-14 16:28:59,844 INFO L226 Difference]: Without dead ends: 2407 [2024-10-14 16:28:59,846 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 985 GetRequests, 960 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2024-10-14 16:28:59,847 INFO L432 NwaCegarLoop]: 1645 mSDtfsCounter, 2606 mSDsluCounter, 11722 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2636 SdHoareTripleChecker+Valid, 13367 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-14 16:28:59,847 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2636 Valid, 13367 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-14 16:28:59,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2024-10-14 16:28:59,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 2115. [2024-10-14 16:28:59,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2115 states, 2082 states have (on average 1.3914505283381364) internal successors, (2897), 2087 states have internal predecessors, (2897), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-10-14 16:28:59,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2115 states to 2115 states and 2952 transitions. [2024-10-14 16:28:59,899 INFO L78 Accepts]: Start accepts. Automaton has 2115 states and 2952 transitions. Word has length 482 [2024-10-14 16:28:59,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:28:59,899 INFO L471 AbstractCegarLoop]: Abstraction has 2115 states and 2952 transitions. [2024-10-14 16:28:59,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 46.07142857142857) internal successors, (645), 13 states have internal predecessors, (645), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-14 16:28:59,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2115 states and 2952 transitions. [2024-10-14 16:28:59,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2024-10-14 16:28:59,911 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:28:59,911 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:28:59,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 16:29:00,111 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,SelfDestructingSolverStorable12 [2024-10-14 16:29:00,112 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:29:00,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:29:00,113 INFO L85 PathProgramCache]: Analyzing trace with hash 436848613, now seen corresponding path program 1 times [2024-10-14 16:29:00,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:29:00,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258583115] [2024-10-14 16:29:00,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:29:00,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:29:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:29:04,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-14 16:29:04,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:29:04,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-14 16:29:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:29:04,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-14 16:29:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:29:04,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-14 16:29:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:29:04,713 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 884 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-14 16:29:04,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:29:04,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258583115] [2024-10-14 16:29:04,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258583115] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:29:04,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000613368] [2024-10-14 16:29:04,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:29:04,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:29:04,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:29:04,716 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:29:04,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 16:29:05,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:29:05,784 INFO L255 TraceCheckSpWp]: Trace formula consists of 3384 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 16:29:05,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:29:05,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-14 16:29:06,040 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-14 16:29:06,209 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-14 16:29:06,388 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-14 16:29:06,631 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-14 16:29:06,649 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 884 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-14 16:29:06,649 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 16:29:07,496 INFO L134 CoverageAnalysis]: Checked inductivity of 902 backedges. 0 proven. 884 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-14 16:29:07,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000613368] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 16:29:07,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 16:29:07,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 25 [2024-10-14 16:29:07,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747301221] [2024-10-14 16:29:07,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 16:29:07,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-14 16:29:07,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:29:07,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-14 16:29:07,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=416, Unknown=0, NotChecked=0, Total=600 [2024-10-14 16:29:07,510 INFO L87 Difference]: Start difference. First operand 2115 states and 2952 transitions. Second operand has 25 states, 25 states have (on average 75.6) internal successors, (1890), 24 states have internal predecessors, (1890), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-14 16:29:09,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:29:09,795 INFO L93 Difference]: Finished difference Result 5091 states and 7114 transitions. [2024-10-14 16:29:09,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-14 16:29:09,796 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 75.6) internal successors, (1890), 24 states have internal predecessors, (1890), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 695 [2024-10-14 16:29:09,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:29:09,819 INFO L225 Difference]: With dead ends: 5091 [2024-10-14 16:29:09,820 INFO L226 Difference]: Without dead ends: 4165 [2024-10-14 16:29:09,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1422 GetRequests, 1382 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=324, Invalid=866, Unknown=0, NotChecked=0, Total=1190 [2024-10-14 16:29:09,826 INFO L432 NwaCegarLoop]: 2753 mSDtfsCounter, 6145 mSDsluCounter, 24687 mSDsCounter, 0 mSdLazyCounter, 1575 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6224 SdHoareTripleChecker+Valid, 27440 SdHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-10-14 16:29:09,826 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6224 Valid, 27440 Invalid, 1674 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [99 Valid, 1575 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-10-14 16:29:09,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4165 states. [2024-10-14 16:29:09,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4165 to 3870. [2024-10-14 16:29:09,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3870 states, 3813 states have (on average 1.3629687909782324) internal successors, (5197), 3818 states have internal predecessors, (5197), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2024-10-14 16:29:09,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3870 states to 3870 states and 5300 transitions. [2024-10-14 16:29:09,959 INFO L78 Accepts]: Start accepts. Automaton has 3870 states and 5300 transitions. Word has length 695 [2024-10-14 16:29:09,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:29:09,961 INFO L471 AbstractCegarLoop]: Abstraction has 3870 states and 5300 transitions. [2024-10-14 16:29:09,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 75.6) internal successors, (1890), 24 states have internal predecessors, (1890), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-14 16:29:09,962 INFO L276 IsEmpty]: Start isEmpty. Operand 3870 states and 5300 transitions. [2024-10-14 16:29:09,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1158 [2024-10-14 16:29:09,973 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:29:09,973 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:29:09,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 16:29:10,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:29:10,174 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:29:10,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:29:10,175 INFO L85 PathProgramCache]: Analyzing trace with hash 2085138949, now seen corresponding path program 1 times [2024-10-14 16:29:10,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:29:10,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464828855] [2024-10-14 16:29:10,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:29:10,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:29:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:29:17,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-14 16:29:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:29:17,273 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-14 16:29:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:29:17,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-14 16:29:17,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:29:17,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-14 16:29:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:29:17,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3905 backedges. 1851 proven. 896 refuted. 0 times theorem prover too weak. 1158 trivial. 0 not checked. [2024-10-14 16:29:17,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:29:17,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464828855] [2024-10-14 16:29:17,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464828855] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:29:17,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948378993] [2024-10-14 16:29:17,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:29:17,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:29:17,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:29:17,290 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:29:17,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 16:29:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:29:18,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 5664 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-14 16:29:18,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:29:18,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-14 16:29:19,098 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-14 16:29:19,263 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-14 16:29:19,436 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-14 16:29:19,609 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-14 16:29:19,631 INFO L134 CoverageAnalysis]: Checked inductivity of 3905 backedges. 1851 proven. 896 refuted. 0 times theorem prover too weak. 1158 trivial. 0 not checked. [2024-10-14 16:29:19,632 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 16:29:20,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3905 backedges. 1851 proven. 896 refuted. 0 times theorem prover too weak. 1158 trivial. 0 not checked. [2024-10-14 16:29:20,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948378993] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 16:29:20,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 16:29:20,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 8] total 26 [2024-10-14 16:29:20,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873152157] [2024-10-14 16:29:20,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 16:29:20,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-14 16:29:20,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:29:20,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-14 16:29:20,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=462, Unknown=0, NotChecked=0, Total=650 [2024-10-14 16:29:20,314 INFO L87 Difference]: Start difference. First operand 3870 states and 5300 transitions. Second operand has 26 states, 26 states have (on average 76.03846153846153) internal successors, (1977), 25 states have internal predecessors, (1977), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-14 16:29:22,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:29:22,214 INFO L93 Difference]: Finished difference Result 6710 states and 9272 transitions. [2024-10-14 16:29:22,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-14 16:29:22,215 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 76.03846153846153) internal successors, (1977), 25 states have internal predecessors, (1977), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 1157 [2024-10-14 16:29:22,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:29:22,230 INFO L225 Difference]: With dead ends: 6710 [2024-10-14 16:29:22,230 INFO L226 Difference]: Without dead ends: 4165 [2024-10-14 16:29:22,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2353 GetRequests, 2307 SyntacticMatches, 7 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=375, Invalid=1265, Unknown=0, NotChecked=0, Total=1640 [2024-10-14 16:29:22,236 INFO L432 NwaCegarLoop]: 2776 mSDtfsCounter, 5659 mSDsluCounter, 26990 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5737 SdHoareTripleChecker+Valid, 29766 SdHoareTripleChecker+Invalid, 1569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-14 16:29:22,236 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5737 Valid, 29766 Invalid, 1569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-14 16:29:22,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4165 states. [2024-10-14 16:29:22,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4165 to 3873. [2024-10-14 16:29:22,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3873 states, 3816 states have (on average 1.3613731656184487) internal successors, (5195), 3821 states have internal predecessors, (5195), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2024-10-14 16:29:22,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3873 states to 3873 states and 5298 transitions. [2024-10-14 16:29:22,420 INFO L78 Accepts]: Start accepts. Automaton has 3873 states and 5298 transitions. Word has length 1157 [2024-10-14 16:29:22,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:29:22,421 INFO L471 AbstractCegarLoop]: Abstraction has 3873 states and 5298 transitions. [2024-10-14 16:29:22,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 76.03846153846153) internal successors, (1977), 25 states have internal predecessors, (1977), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-14 16:29:22,421 INFO L276 IsEmpty]: Start isEmpty. Operand 3873 states and 5298 transitions. [2024-10-14 16:29:22,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1584 [2024-10-14 16:29:22,436 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:29:22,436 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:29:22,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-14 16:29:22,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-14 16:29:22,637 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:29:22,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:29:22,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1852803847, now seen corresponding path program 2 times [2024-10-14 16:29:22,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:29:22,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291432909] [2024-10-14 16:29:22,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:29:22,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:29:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:29:26,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-14 16:29:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:29:26,760 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-14 16:29:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:29:26,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-14 16:29:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:29:26,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-14 16:29:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:29:26,770 INFO L134 CoverageAnalysis]: Checked inductivity of 6662 backedges. 1320 proven. 1 refuted. 0 times theorem prover too weak. 5341 trivial. 0 not checked. [2024-10-14 16:29:26,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:29:26,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291432909] [2024-10-14 16:29:26,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291432909] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:29:26,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922982526] [2024-10-14 16:29:26,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 16:29:26,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:29:26,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:29:26,772 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:29:26,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 16:29:27,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 16:29:27,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 16:29:27,854 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-14 16:29:27,876 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:29:27,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-14 16:29:28,311 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 16:29:28,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 58 [2024-10-14 16:29:28,485 INFO L134 CoverageAnalysis]: Checked inductivity of 6662 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6662 trivial. 0 not checked. [2024-10-14 16:29:28,485 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 16:29:28,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922982526] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:29:28,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 16:29:28,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2024-10-14 16:29:28,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681314623] [2024-10-14 16:29:28,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:29:28,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 16:29:28,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:29:28,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 16:29:28,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2024-10-14 16:29:28,488 INFO L87 Difference]: Start difference. First operand 3873 states and 5298 transitions. Second operand has 10 states, 10 states have (on average 24.0) internal successors, (240), 10 states have internal predecessors, (240), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-14 16:29:29,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:29:29,718 INFO L93 Difference]: Finished difference Result 4749 states and 6589 transitions. [2024-10-14 16:29:29,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 16:29:29,718 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 24.0) internal successors, (240), 10 states have internal predecessors, (240), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1583 [2024-10-14 16:29:29,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:29:29,733 INFO L225 Difference]: With dead ends: 4749 [2024-10-14 16:29:29,734 INFO L226 Difference]: Without dead ends: 3910 [2024-10-14 16:29:29,736 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1605 GetRequests, 1584 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2024-10-14 16:29:29,737 INFO L432 NwaCegarLoop]: 1305 mSDtfsCounter, 502 mSDsluCounter, 6582 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 7887 SdHoareTripleChecker+Invalid, 1040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-10-14 16:29:29,737 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 7887 Invalid, 1040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-10-14 16:29:29,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3910 states. [2024-10-14 16:29:29,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3910 to 3905. [2024-10-14 16:29:29,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3905 states, 3848 states have (on average 1.3596673596673596) internal successors, (5232), 3853 states have internal predecessors, (5232), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2024-10-14 16:29:29,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3905 states to 3905 states and 5335 transitions. [2024-10-14 16:29:29,826 INFO L78 Accepts]: Start accepts. Automaton has 3905 states and 5335 transitions. Word has length 1583 [2024-10-14 16:29:29,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:29:29,829 INFO L471 AbstractCegarLoop]: Abstraction has 3905 states and 5335 transitions. [2024-10-14 16:29:29,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.0) internal successors, (240), 10 states have internal predecessors, (240), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-14 16:29:29,829 INFO L276 IsEmpty]: Start isEmpty. Operand 3905 states and 5335 transitions. [2024-10-14 16:29:29,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1584 [2024-10-14 16:29:29,846 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:29:29,847 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:29:29,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-14 16:29:30,047 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,SelfDestructingSolverStorable15 [2024-10-14 16:29:30,048 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:29:30,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:29:30,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1430277375, now seen corresponding path program 1 times [2024-10-14 16:29:30,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:29:30,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259657591] [2024-10-14 16:29:30,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:29:30,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:29:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:29:31,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-14 16:29:31,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:29:31,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-14 16:29:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:29:31,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-14 16:29:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:29:31,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-14 16:29:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:29:31,815 INFO L134 CoverageAnalysis]: Checked inductivity of 6662 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6662 trivial. 0 not checked. [2024-10-14 16:29:31,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:29:31,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259657591] [2024-10-14 16:29:31,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259657591] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:29:31,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:29:31,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 16:29:31,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552465092] [2024-10-14 16:29:31,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:29:31,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 16:29:31,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:29:31,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 16:29:31,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 16:29:31,817 INFO L87 Difference]: Start difference. First operand 3905 states and 5335 transitions. Second operand has 5 states, 5 states have (on average 48.0) internal successors, (240), 4 states have internal predecessors, (240), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-14 16:29:32,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:29:32,320 INFO L93 Difference]: Finished difference Result 4758 states and 6639 transitions. [2024-10-14 16:29:32,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 16:29:32,321 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 4 states have internal predecessors, (240), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1583 [2024-10-14 16:29:32,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:29:32,332 INFO L225 Difference]: With dead ends: 4758 [2024-10-14 16:29:32,332 INFO L226 Difference]: Without dead ends: 3823 [2024-10-14 16:29:32,336 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 16:29:32,337 INFO L432 NwaCegarLoop]: 1210 mSDtfsCounter, 30 mSDsluCounter, 3480 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 4690 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 16:29:32,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 4690 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 16:29:32,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3823 states. [2024-10-14 16:29:32,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3823 to 3819. [2024-10-14 16:29:32,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3819 states, 3762 states have (on average 1.3577884104199893) internal successors, (5108), 3767 states have internal predecessors, (5108), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2024-10-14 16:29:32,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3819 states to 3819 states and 5211 transitions. [2024-10-14 16:29:32,407 INFO L78 Accepts]: Start accepts. Automaton has 3819 states and 5211 transitions. Word has length 1583 [2024-10-14 16:29:32,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:29:32,408 INFO L471 AbstractCegarLoop]: Abstraction has 3819 states and 5211 transitions. [2024-10-14 16:29:32,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.0) internal successors, (240), 4 states have internal predecessors, (240), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-14 16:29:32,408 INFO L276 IsEmpty]: Start isEmpty. Operand 3819 states and 5211 transitions. [2024-10-14 16:29:32,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1585 [2024-10-14 16:29:32,422 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:29:32,422 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:29:32,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-14 16:29:32,423 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:29:32,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:29:32,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1412933951, now seen corresponding path program 1 times [2024-10-14 16:29:32,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:29:32,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30549845] [2024-10-14 16:29:32,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:29:32,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:29:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:29:36,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-14 16:29:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:29:36,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-14 16:29:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:29:36,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-14 16:29:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:29:36,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-14 16:29:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:29:36,700 INFO L134 CoverageAnalysis]: Checked inductivity of 6662 backedges. 1320 proven. 1 refuted. 0 times theorem prover too weak. 5341 trivial. 0 not checked. [2024-10-14 16:29:36,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:29:36,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30549845] [2024-10-14 16:29:36,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30549845] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:29:36,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238375249] [2024-10-14 16:29:36,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:29:36,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:29:36,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:29:36,703 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:29:36,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 16:29:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:29:38,819 INFO L255 TraceCheckSpWp]: Trace formula consists of 7627 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-14 16:29:38,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:29:38,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-14 16:29:39,145 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-14 16:29:39,288 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-14 16:29:39,425 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-14 16:29:39,567 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-14 16:29:39,695 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-14 16:29:39,833 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-14 16:29:39,970 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-14 16:29:40,208 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-14 16:29:40,347 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-14 16:29:40,491 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-10-14 16:29:40,508 INFO L134 CoverageAnalysis]: Checked inductivity of 6662 backedges. 0 proven. 6644 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-14 16:29:40,508 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 16:29:42,060 INFO L134 CoverageAnalysis]: Checked inductivity of 6662 backedges. 0 proven. 6644 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-14 16:29:42,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238375249] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 16:29:42,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 16:29:42,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 14] total 32 [2024-10-14 16:29:42,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190376746] [2024-10-14 16:29:42,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 16:29:42,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-14 16:29:42,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:29:42,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-14 16:29:42,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=709, Unknown=0, NotChecked=0, Total=992 [2024-10-14 16:29:42,067 INFO L87 Difference]: Start difference. First operand 3819 states and 5211 transitions. Second operand has 32 states, 32 states have (on average 105.53125) internal successors, (3377), 31 states have internal predecessors, (3377), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-14 16:29:46,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:29:46,156 INFO L93 Difference]: Finished difference Result 7278 states and 10024 transitions. [2024-10-14 16:29:46,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-10-14 16:29:46,157 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 105.53125) internal successors, (3377), 31 states have internal predecessors, (3377), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 1584 [2024-10-14 16:29:46,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:29:46,172 INFO L225 Difference]: With dead ends: 7278 [2024-10-14 16:29:46,172 INFO L226 Difference]: Without dead ends: 6110 [2024-10-14 16:29:46,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3230 GetRequests, 3146 SyntacticMatches, 7 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1819 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1320, Invalid=4842, Unknown=0, NotChecked=0, Total=6162 [2024-10-14 16:29:46,178 INFO L432 NwaCegarLoop]: 4746 mSDtfsCounter, 15654 mSDsluCounter, 70939 mSDsCounter, 0 mSdLazyCounter, 3572 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15819 SdHoareTripleChecker+Valid, 75685 SdHoareTripleChecker+Invalid, 3748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 3572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-10-14 16:29:46,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15819 Valid, 75685 Invalid, 3748 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [176 Valid, 3572 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-10-14 16:29:46,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6110 states. [2024-10-14 16:29:46,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6110 to 5957. [2024-10-14 16:29:46,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5957 states, 5860 states have (on average 1.3418088737201366) internal successors, (7863), 5865 states have internal predecessors, (7863), 92 states have call successors, (92), 4 states have call predecessors, (92), 4 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2024-10-14 16:29:46,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5957 states to 5957 states and 8046 transitions. [2024-10-14 16:29:46,299 INFO L78 Accepts]: Start accepts. Automaton has 5957 states and 8046 transitions. Word has length 1584 [2024-10-14 16:29:46,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:29:46,300 INFO L471 AbstractCegarLoop]: Abstraction has 5957 states and 8046 transitions. [2024-10-14 16:29:46,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 105.53125) internal successors, (3377), 31 states have internal predecessors, (3377), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-10-14 16:29:46,302 INFO L276 IsEmpty]: Start isEmpty. Operand 5957 states and 8046 transitions. [2024-10-14 16:29:46,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2509 [2024-10-14 16:29:46,332 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:29:46,332 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:29:46,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 16:29:46,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-14 16:29:46,533 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:29:46,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:29:46,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1104451199, now seen corresponding path program 1 times [2024-10-14 16:29:46,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:29:46,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303828897] [2024-10-14 16:29:46,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:29:46,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:29:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat