./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3db5e6ee1090a5741e563a010c3676d5357df7fec89fabe5a888b2d307357a0e --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 11:52:46,261 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 11:52:46,334 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 11:52:46,340 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 11:52:46,344 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 11:52:46,375 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 11:52:46,376 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 11:52:46,376 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 11:52:46,377 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 11:52:46,378 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 11:52:46,378 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 11:52:46,378 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 11:52:46,380 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 11:52:46,381 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 11:52:46,381 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 11:52:46,384 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 11:52:46,384 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 11:52:46,384 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 11:52:46,385 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 11:52:46,385 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 11:52:46,385 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 11:52:46,389 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 11:52:46,390 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 11:52:46,390 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 11:52:46,390 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 11:52:46,390 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 11:52:46,391 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 11:52:46,391 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 11:52:46,391 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 11:52:46,391 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 11:52:46,391 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 11:52:46,392 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 11:52:46,392 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 11:52:46,392 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 11:52:46,392 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 11:52:46,393 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 11:52:46,393 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 11:52:46,393 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 11:52:46,396 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 11:52:46,396 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 11:52:46,396 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 11:52:46,397 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 11:52:46,397 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3db5e6ee1090a5741e563a010c3676d5357df7fec89fabe5a888b2d307357a0e [2024-11-12 11:52:46,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 11:52:46,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 11:52:46,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 11:52:46,677 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 11:52:46,678 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 11:52:46,679 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.i [2024-11-12 11:52:48,274 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 11:52:48,640 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 11:52:48,642 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.i [2024-11-12 11:52:48,668 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb3a98f9c/6fbde0998d984473849c13756301ffd5/FLAGd3643f125 [2024-11-12 11:52:48,856 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb3a98f9c/6fbde0998d984473849c13756301ffd5 [2024-11-12 11:52:48,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 11:52:48,860 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 11:52:48,862 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 11:52:48,862 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 11:52:48,867 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 11:52:48,868 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:52:48" (1/1) ... [2024-11-12 11:52:48,869 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cdbce44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:48, skipping insertion in model container [2024-11-12 11:52:48,869 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:52:48" (1/1) ... [2024-11-12 11:52:48,958 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 11:52:49,408 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.i[33022,33035] [2024-11-12 11:52:49,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 11:52:49,628 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 11:52:49,667 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-2.i[33022,33035] [2024-11-12 11:52:49,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 11:52:49,860 INFO L204 MainTranslator]: Completed translation [2024-11-12 11:52:49,860 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:49 WrapperNode [2024-11-12 11:52:49,861 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 11:52:49,862 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 11:52:49,862 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 11:52:49,862 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 11:52:49,868 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:49" (1/1) ... [2024-11-12 11:52:49,922 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:49" (1/1) ... [2024-11-12 11:52:50,047 INFO L138 Inliner]: procedures = 177, calls = 557, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3576 [2024-11-12 11:52:50,048 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 11:52:50,049 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 11:52:50,049 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 11:52:50,049 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 11:52:50,060 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:49" (1/1) ... [2024-11-12 11:52:50,061 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:49" (1/1) ... [2024-11-12 11:52:50,084 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:49" (1/1) ... [2024-11-12 11:52:50,332 INFO L175 MemorySlicer]: Split 528 memory accesses to 3 slices as follows [2, 106, 420]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 94 writes are split as follows [0, 4, 90]. [2024-11-12 11:52:50,336 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:49" (1/1) ... [2024-11-12 11:52:50,337 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:49" (1/1) ... [2024-11-12 11:52:50,422 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:49" (1/1) ... [2024-11-12 11:52:50,460 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:49" (1/1) ... [2024-11-12 11:52:50,477 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:49" (1/1) ... [2024-11-12 11:52:50,492 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:49" (1/1) ... [2024-11-12 11:52:50,524 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 11:52:50,527 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 11:52:50,527 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 11:52:50,528 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 11:52:50,529 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:49" (1/1) ... [2024-11-12 11:52:50,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 11:52:50,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:52:50,567 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 11:52:50,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 11:52:50,618 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2024-11-12 11:52:50,619 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2024-11-12 11:52:50,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 11:52:50,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 11:52:50,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-12 11:52:50,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-12 11:52:50,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-12 11:52:50,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 11:52:50,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 11:52:50,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-12 11:52:50,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-12 11:52:50,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-12 11:52:50,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-12 11:52:50,622 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-12 11:52:50,622 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-12 11:52:50,622 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-12 11:52:50,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 11:52:50,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 11:52:50,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-12 11:52:50,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-12 11:52:50,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-12 11:52:50,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-12 11:52:50,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-12 11:52:50,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-12 11:52:50,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-12 11:52:50,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-12 11:52:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 11:52:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 11:52:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-12 11:52:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 11:52:50,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 11:52:50,969 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 11:52:50,972 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 11:52:53,872 INFO L? ?]: Removed 807 outVars from TransFormulas that were not future-live. [2024-11-12 11:52:53,873 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 11:52:53,916 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 11:52:53,918 INFO L316 CfgBuilder]: Removed 160 assume(true) statements. [2024-11-12 11:52:53,919 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:52:53 BoogieIcfgContainer [2024-11-12 11:52:53,919 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 11:52:53,921 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 11:52:53,922 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 11:52:53,925 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 11:52:53,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:52:48" (1/3) ... [2024-11-12 11:52:53,926 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee0cf40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:52:53, skipping insertion in model container [2024-11-12 11:52:53,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:52:49" (2/3) ... [2024-11-12 11:52:53,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee0cf40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:52:53, skipping insertion in model container [2024-11-12 11:52:53,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:52:53" (3/3) ... [2024-11-12 11:52:53,928 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test10-2.i [2024-11-12 11:52:53,948 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 11:52:53,948 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-12 11:52:54,065 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 11:52:54,074 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;@8184f6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 11:52:54,075 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-12 11:52:54,087 INFO L276 IsEmpty]: Start isEmpty. Operand has 1065 states, 1046 states have (on average 1.6281070745697896) internal successors, (1703), 1051 states have internal predecessors, (1703), 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) [2024-11-12 11:52:54,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-12 11:52:54,097 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:52:54,098 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 11:52:54,099 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:52:54,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:52:54,106 INFO L85 PathProgramCache]: Analyzing trace with hash -617200611, now seen corresponding path program 1 times [2024-11-12 11:52:54,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:52:54,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799609247] [2024-11-12 11:52:54,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:52:54,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:52:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:52:54,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 11:52:54,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:52:54,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799609247] [2024-11-12 11:52:54,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799609247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:52:54,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:52:54,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 11:52:54,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703344898] [2024-11-12 11:52:54,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:52:54,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-12 11:52:54,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:52:54,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-12 11:52:54,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-12 11:52:54,383 INFO L87 Difference]: Start difference. First operand has 1065 states, 1046 states have (on average 1.6281070745697896) internal successors, (1703), 1051 states have internal predecessors, (1703), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 11:52:54,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:52:54,493 INFO L93 Difference]: Finished difference Result 2128 states and 3468 transitions. [2024-11-12 11:52:54,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-12 11:52:54,497 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 13 [2024-11-12 11:52:54,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:52:54,524 INFO L225 Difference]: With dead ends: 2128 [2024-11-12 11:52:54,524 INFO L226 Difference]: Without dead ends: 1026 [2024-11-12 11:52:54,534 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-12 11:52:54,538 INFO L435 NwaCegarLoop]: 1563 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 11:52:54,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1563 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 11:52:54,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2024-11-12 11:52:54,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1026. [2024-11-12 11:52:54,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 1008 states have (on average 1.4722222222222223) internal successors, (1484), 1013 states have internal predecessors, (1484), 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) [2024-11-12 11:52:54,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1511 transitions. [2024-11-12 11:52:54,663 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1511 transitions. Word has length 13 [2024-11-12 11:52:54,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:52:54,664 INFO L471 AbstractCegarLoop]: Abstraction has 1026 states and 1511 transitions. [2024-11-12 11:52:54,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 11:52:54,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1511 transitions. [2024-11-12 11:52:54,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-12 11:52:54,674 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:52:54,674 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 11:52:54,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 11:52:54,675 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:52:54,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:52:54,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1935262989, now seen corresponding path program 1 times [2024-11-12 11:52:54,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:52:54,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353675451] [2024-11-12 11:52:54,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:52:54,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:52:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:52:55,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 11:52:55,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:52:55,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353675451] [2024-11-12 11:52:55,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353675451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:52:55,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:52:55,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 11:52:55,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907971568] [2024-11-12 11:52:55,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:52:55,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 11:52:55,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:52:55,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 11:52:55,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 11:52:55,209 INFO L87 Difference]: Start difference. First operand 1026 states and 1511 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 11:52:55,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:52:55,480 INFO L93 Difference]: Finished difference Result 2046 states and 3016 transitions. [2024-11-12 11:52:55,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 11:52:55,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (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 68 [2024-11-12 11:52:55,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:52:55,494 INFO L225 Difference]: With dead ends: 2046 [2024-11-12 11:52:55,498 INFO L226 Difference]: Without dead ends: 1412 [2024-11-12 11:52:55,504 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-12 11:52:55,506 INFO L435 NwaCegarLoop]: 1550 mSDtfsCounter, 548 mSDsluCounter, 2991 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 4541 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-12 11:52:55,506 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 4541 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-12 11:52:55,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2024-11-12 11:52:55,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1028. [2024-11-12 11:52:55,552 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) [2024-11-12 11:52:55,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1513 transitions. [2024-11-12 11:52:55,559 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1513 transitions. Word has length 68 [2024-11-12 11:52:55,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:52:55,560 INFO L471 AbstractCegarLoop]: Abstraction has 1028 states and 1513 transitions. [2024-11-12 11:52:55,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 11:52:55,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1513 transitions. [2024-11-12 11:52:55,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-12 11:52:55,568 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:52:55,568 INFO L218 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] [2024-11-12 11:52:55,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 11:52:55,569 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:52:55,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:52:55,574 INFO L85 PathProgramCache]: Analyzing trace with hash -159013728, now seen corresponding path program 1 times [2024-11-12 11:52:55,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:52:55,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480571457] [2024-11-12 11:52:55,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:52:55,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:52:55,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:52:56,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 11:52:56,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:52:56,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480571457] [2024-11-12 11:52:56,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480571457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:52:56,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:52:56,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 11:52:56,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760483754] [2024-11-12 11:52:56,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:52:56,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 11:52:56,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:52:56,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 11:52:56,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-12 11:52:56,278 INFO L87 Difference]: Start difference. First operand 1028 states and 1513 transitions. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 11:52:56,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:52:56,519 INFO L93 Difference]: Finished difference Result 2436 states and 3581 transitions. [2024-11-12 11:52:56,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 11:52:56,520 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 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 145 [2024-11-12 11:52:56,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:52:56,529 INFO L225 Difference]: With dead ends: 2436 [2024-11-12 11:52:56,530 INFO L226 Difference]: Without dead ends: 1412 [2024-11-12 11:52:56,533 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-12 11:52:56,535 INFO L435 NwaCegarLoop]: 1557 mSDtfsCounter, 1090 mSDsluCounter, 3542 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 5099 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-12 11:52:56,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1096 Valid, 5099 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-12 11:52:56,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2024-11-12 11:52:56,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1031. [2024-11-12 11:52:56,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 1013 states have (on average 1.4698914116485686) internal successors, (1489), 1018 states have internal predecessors, (1489), 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) [2024-11-12 11:52:56,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1516 transitions. [2024-11-12 11:52:56,576 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1516 transitions. Word has length 145 [2024-11-12 11:52:56,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:52:56,577 INFO L471 AbstractCegarLoop]: Abstraction has 1031 states and 1516 transitions. [2024-11-12 11:52:56,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 11:52:56,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1516 transitions. [2024-11-12 11:52:56,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-12 11:52:56,583 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:52:56,584 INFO L218 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, 1] [2024-11-12 11:52:56,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 11:52:56,584 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:52:56,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:52:56,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1127309136, now seen corresponding path program 1 times [2024-11-12 11:52:56,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:52:56,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768647884] [2024-11-12 11:52:56,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:52:56,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:52:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:52:57,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 11:52:57,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:52:57,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768647884] [2024-11-12 11:52:57,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768647884] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:52:57,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:52:57,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 11:52:57,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688137154] [2024-11-12 11:52:57,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:52:57,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 11:52:57,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:52:57,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 11:52:57,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 11:52:57,094 INFO L87 Difference]: Start difference. First operand 1031 states and 1516 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 11:52:57,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:52:57,201 INFO L93 Difference]: Finished difference Result 2013 states and 2959 transitions. [2024-11-12 11:52:57,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 11:52:57,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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 216 [2024-11-12 11:52:57,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:52:57,208 INFO L225 Difference]: With dead ends: 2013 [2024-11-12 11:52:57,208 INFO L226 Difference]: Without dead ends: 989 [2024-11-12 11:52:57,212 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-12 11:52:57,214 INFO L435 NwaCegarLoop]: 1409 mSDtfsCounter, 30 mSDsluCounter, 2799 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 4208 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 11:52:57,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 4208 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 11:52:57,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2024-11-12 11:52:57,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 989. [2024-11-12 11:52:57,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 971 states have (on average 1.454170957775489) internal successors, (1412), 976 states have internal predecessors, (1412), 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) [2024-11-12 11:52:57,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1439 transitions. [2024-11-12 11:52:57,248 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1439 transitions. Word has length 216 [2024-11-12 11:52:57,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:52:57,251 INFO L471 AbstractCegarLoop]: Abstraction has 989 states and 1439 transitions. [2024-11-12 11:52:57,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 11:52:57,251 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1439 transitions. [2024-11-12 11:52:57,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-12 11:52:57,255 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:52:57,257 INFO L218 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, 1] [2024-11-12 11:52:57,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 11:52:57,257 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:52:57,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:52:57,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1916424380, now seen corresponding path program 1 times [2024-11-12 11:52:57,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:52:57,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72944088] [2024-11-12 11:52:57,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:52:57,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:52:57,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:52:57,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 11:52:57,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:52:57,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72944088] [2024-11-12 11:52:57,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72944088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:52:57,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:52:57,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 11:52:57,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107686098] [2024-11-12 11:52:57,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:52:57,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 11:52:57,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:52:57,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 11:52:57,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 11:52:57,536 INFO L87 Difference]: Start difference. First operand 989 states and 1439 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 11:52:57,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:52:57,646 INFO L93 Difference]: Finished difference Result 2502 states and 3654 transitions. [2024-11-12 11:52:57,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 11:52:57,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 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 216 [2024-11-12 11:52:57,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:52:57,655 INFO L225 Difference]: With dead ends: 2502 [2024-11-12 11:52:57,656 INFO L226 Difference]: Without dead ends: 1520 [2024-11-12 11:52:57,660 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 11:52:57,662 INFO L435 NwaCegarLoop]: 1426 mSDtfsCounter, 716 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 11:52:57,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 2834 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 11:52:57,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2024-11-12 11:52:57,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1361. [2024-11-12 11:52:57,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 1341 states have (on average 1.4571215510812827) internal successors, (1954), 1346 states have internal predecessors, (1954), 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) [2024-11-12 11:52:57,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1985 transitions. [2024-11-12 11:52:57,711 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1985 transitions. Word has length 216 [2024-11-12 11:52:57,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:52:57,712 INFO L471 AbstractCegarLoop]: Abstraction has 1361 states and 1985 transitions. [2024-11-12 11:52:57,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 11:52:57,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1985 transitions. [2024-11-12 11:52:57,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-12 11:52:57,716 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:52:57,717 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 11:52:57,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 11:52:57,719 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:52:57,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:52:57,720 INFO L85 PathProgramCache]: Analyzing trace with hash -775181257, now seen corresponding path program 1 times [2024-11-12 11:52:57,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:52:57,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389048619] [2024-11-12 11:52:57,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:52:57,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:52:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:52:58,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 11:52:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:52:58,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 11:52:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:52:58,320 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 11:52:58,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:52:58,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389048619] [2024-11-12 11:52:58,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389048619] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:52:58,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:52:58,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 11:52:58,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660540716] [2024-11-12 11:52:58,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:52:58,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 11:52:58,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:52:58,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 11:52:58,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 11:52:58,326 INFO L87 Difference]: Start difference. First operand 1361 states and 1985 transitions. Second operand has 5 states, 5 states have (on average 44.4) internal successors, (222), 4 states have internal predecessors, (222), 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) [2024-11-12 11:52:58,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:52:58,941 INFO L93 Difference]: Finished difference Result 2591 states and 3790 transitions. [2024-11-12 11:52:58,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 11:52:58,942 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 4 states have internal predecessors, (222), 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 231 [2024-11-12 11:52:58,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:52:58,949 INFO L225 Difference]: With dead ends: 2591 [2024-11-12 11:52:58,950 INFO L226 Difference]: Without dead ends: 1322 [2024-11-12 11:52:58,952 INFO L434 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 [2024-11-12 11:52:58,953 INFO L435 NwaCegarLoop]: 1301 mSDtfsCounter, 53 mSDsluCounter, 3751 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 5052 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-12 11:52:58,953 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 5052 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-12 11:52:58,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2024-11-12 11:52:58,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1319. [2024-11-12 11:52:58,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1299 states have (on average 1.4449576597382603) internal successors, (1877), 1304 states have internal predecessors, (1877), 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) [2024-11-12 11:52:58,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1908 transitions. [2024-11-12 11:52:58,995 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1908 transitions. Word has length 231 [2024-11-12 11:52:58,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:52:58,996 INFO L471 AbstractCegarLoop]: Abstraction has 1319 states and 1908 transitions. [2024-11-12 11:52:58,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 4 states have internal predecessors, (222), 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) [2024-11-12 11:52:58,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1908 transitions. [2024-11-12 11:52:58,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-12 11:52:59,000 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:52:59,000 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 11:52:59,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 11:52:59,000 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:52:59,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:52:59,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1150988221, now seen corresponding path program 1 times [2024-11-12 11:52:59,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:52:59,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571933698] [2024-11-12 11:52:59,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:52:59,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:52:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:52:59,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 11:52:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:52:59,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 11:52:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:52:59,406 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 11:52:59,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:52:59,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571933698] [2024-11-12 11:52:59,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571933698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:52:59,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:52:59,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 11:52:59,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044637332] [2024-11-12 11:52:59,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:52:59,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 11:52:59,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:52:59,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 11:52:59,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 11:52:59,410 INFO L87 Difference]: Start difference. First operand 1319 states and 1908 transitions. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 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) [2024-11-12 11:52:59,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:52:59,988 INFO L93 Difference]: Finished difference Result 2549 states and 3702 transitions. [2024-11-12 11:52:59,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 11:52:59,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 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 231 [2024-11-12 11:52:59,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:52:59,998 INFO L225 Difference]: With dead ends: 2549 [2024-11-12 11:52:59,998 INFO L226 Difference]: Without dead ends: 1322 [2024-11-12 11:53:00,001 INFO L434 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 [2024-11-12 11:53:00,002 INFO L435 NwaCegarLoop]: 1314 mSDtfsCounter, 24 mSDsluCounter, 2479 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3793 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-12 11:53:00,004 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3793 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-12 11:53:00,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2024-11-12 11:53:00,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1319. [2024-11-12 11:53:00,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1299 states have (on average 1.4426481909160893) internal successors, (1874), 1304 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) [2024-11-12 11:53:00,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1905 transitions. [2024-11-12 11:53:00,050 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1905 transitions. Word has length 231 [2024-11-12 11:53:00,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:53:00,052 INFO L471 AbstractCegarLoop]: Abstraction has 1319 states and 1905 transitions. [2024-11-12 11:53:00,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 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) [2024-11-12 11:53:00,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1905 transitions. [2024-11-12 11:53:00,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-12 11:53:00,056 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:53:00,057 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 11:53:00,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 11:53:00,057 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:53:00,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:53:00,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1416834113, now seen corresponding path program 1 times [2024-11-12 11:53:00,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:53:00,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898488850] [2024-11-12 11:53:00,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:53:00,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:53:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:00,392 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 11:53:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:00,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 11:53:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:00,406 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 11:53:00,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:53:00,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898488850] [2024-11-12 11:53:00,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898488850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:53:00,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:53:00,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 11:53:00,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276761911] [2024-11-12 11:53:00,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:53:00,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 11:53:00,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:53:00,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 11:53:00,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 11:53:00,409 INFO L87 Difference]: Start difference. First operand 1319 states and 1905 transitions. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 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) [2024-11-12 11:53:01,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:53:01,027 INFO L93 Difference]: Finished difference Result 3120 states and 4530 transitions. [2024-11-12 11:53:01,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 11:53:01,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 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 231 [2024-11-12 11:53:01,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:53:01,043 INFO L225 Difference]: With dead ends: 3120 [2024-11-12 11:53:01,043 INFO L226 Difference]: Without dead ends: 1893 [2024-11-12 11:53:01,046 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 11:53:01,048 INFO L435 NwaCegarLoop]: 1513 mSDtfsCounter, 619 mSDsluCounter, 2683 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 4196 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-12 11:53:01,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 4196 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-12 11:53:01,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2024-11-12 11:53:01,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1885. [2024-11-12 11:53:01,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1885 states, 1859 states have (on average 1.444862829478214) internal successors, (2686), 1864 states have internal predecessors, (2686), 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) [2024-11-12 11:53:01,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 2729 transitions. [2024-11-12 11:53:01,124 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 2729 transitions. Word has length 231 [2024-11-12 11:53:01,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:53:01,127 INFO L471 AbstractCegarLoop]: Abstraction has 1885 states and 2729 transitions. [2024-11-12 11:53:01,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 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) [2024-11-12 11:53:01,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 2729 transitions. [2024-11-12 11:53:01,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-12 11:53:01,133 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:53:01,133 INFO L218 NwaCegarLoop]: trace histogram [4, 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] [2024-11-12 11:53:01,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 11:53:01,134 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:53:01,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:53:01,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1986589973, now seen corresponding path program 1 times [2024-11-12 11:53:01,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:53:01,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812408718] [2024-11-12 11:53:01,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:53:01,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:53:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:01,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 11:53:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:01,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 11:53:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:01,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-12 11:53:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:01,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-12 11:53:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:01,648 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-12 11:53:01,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:53:01,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812408718] [2024-11-12 11:53:01,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812408718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:53:01,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:53:01,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 11:53:01,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278790103] [2024-11-12 11:53:01,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:53:01,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 11:53:01,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:53:01,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 11:53:01,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-12 11:53:01,653 INFO L87 Difference]: Start difference. First operand 1885 states and 2729 transitions. Second operand has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 5 states have internal predecessors, (227), 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) [2024-11-12 11:53:02,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:53:02,647 INFO L93 Difference]: Finished difference Result 4073 states and 5947 transitions. [2024-11-12 11:53:02,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 11:53:02,648 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 5 states have internal predecessors, (227), 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 246 [2024-11-12 11:53:02,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:53:02,660 INFO L225 Difference]: With dead ends: 4073 [2024-11-12 11:53:02,660 INFO L226 Difference]: Without dead ends: 2426 [2024-11-12 11:53:02,664 INFO L434 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 [2024-11-12 11:53:02,665 INFO L435 NwaCegarLoop]: 1389 mSDtfsCounter, 5576 mSDsluCounter, 2679 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5587 SdHoareTripleChecker+Valid, 4068 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-12 11:53:02,665 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5587 Valid, 4068 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-12 11:53:02,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2024-11-12 11:53:02,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 1456. [2024-11-12 11:53:02,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1435 states have (on average 1.4292682926829268) internal successors, (2051), 1440 states have internal predecessors, (2051), 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) [2024-11-12 11:53:02,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 2084 transitions. [2024-11-12 11:53:02,730 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 2084 transitions. Word has length 246 [2024-11-12 11:53:02,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:53:02,731 INFO L471 AbstractCegarLoop]: Abstraction has 1456 states and 2084 transitions. [2024-11-12 11:53:02,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 5 states have internal predecessors, (227), 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) [2024-11-12 11:53:02,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 2084 transitions. [2024-11-12 11:53:02,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-12 11:53:02,735 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:53:02,735 INFO L218 NwaCegarLoop]: trace histogram [4, 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, 1] [2024-11-12 11:53:02,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 11:53:02,736 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:53:02,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:53:02,736 INFO L85 PathProgramCache]: Analyzing trace with hash -865159617, now seen corresponding path program 1 times [2024-11-12 11:53:02,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:53:02,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377325241] [2024-11-12 11:53:02,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:53:02,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:53:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:03,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 11:53:03,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:03,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 11:53:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:03,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-12 11:53:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:03,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-12 11:53:03,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:03,228 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-12 11:53:03,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:53:03,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377325241] [2024-11-12 11:53:03,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377325241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:53:03,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:53:03,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 11:53:03,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049574228] [2024-11-12 11:53:03,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:53:03,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 11:53:03,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:53:03,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 11:53:03,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 11:53:03,231 INFO L87 Difference]: Start difference. First operand 1456 states and 2084 transitions. Second operand has 5 states, 5 states have (on average 47.2) internal successors, (236), 4 states have internal predecessors, (236), 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) [2024-11-12 11:53:03,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:53:03,784 INFO L93 Difference]: Finished difference Result 2334 states and 3394 transitions. [2024-11-12 11:53:03,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 11:53:03,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 47.2) internal successors, (236), 4 states have internal predecessors, (236), 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 256 [2024-11-12 11:53:03,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:53:03,792 INFO L225 Difference]: With dead ends: 2334 [2024-11-12 11:53:03,793 INFO L226 Difference]: Without dead ends: 1417 [2024-11-12 11:53:03,795 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-12 11:53:03,795 INFO L435 NwaCegarLoop]: 1215 mSDtfsCounter, 53 mSDsluCounter, 3494 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 4709 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-12 11:53:03,796 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 4709 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-12 11:53:03,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2024-11-12 11:53:03,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 1414. [2024-11-12 11:53:03,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1414 states, 1393 states have (on average 1.4170854271356783) internal successors, (1974), 1398 states have internal predecessors, (1974), 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) [2024-11-12 11:53:03,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1414 states to 1414 states and 2007 transitions. [2024-11-12 11:53:03,846 INFO L78 Accepts]: Start accepts. Automaton has 1414 states and 2007 transitions. Word has length 256 [2024-11-12 11:53:03,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:53:03,846 INFO L471 AbstractCegarLoop]: Abstraction has 1414 states and 2007 transitions. [2024-11-12 11:53:03,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.2) internal successors, (236), 4 states have internal predecessors, (236), 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) [2024-11-12 11:53:03,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1414 states and 2007 transitions. [2024-11-12 11:53:03,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-12 11:53:03,850 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:53:03,850 INFO L218 NwaCegarLoop]: trace histogram [4, 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, 1] [2024-11-12 11:53:03,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-12 11:53:03,851 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:53:03,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:53:03,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1643492111, now seen corresponding path program 1 times [2024-11-12 11:53:03,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:53:03,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582598701] [2024-11-12 11:53:03,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:53:03,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:53:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:04,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 11:53:04,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:04,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 11:53:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:04,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-12 11:53:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:04,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-12 11:53:04,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:04,261 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-12 11:53:04,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:53:04,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582598701] [2024-11-12 11:53:04,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582598701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:53:04,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:53:04,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 11:53:04,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194967687] [2024-11-12 11:53:04,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:53:04,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 11:53:04,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:53:04,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 11:53:04,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 11:53:04,265 INFO L87 Difference]: Start difference. First operand 1414 states and 2007 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 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) [2024-11-12 11:53:04,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:53:04,725 INFO L93 Difference]: Finished difference Result 2267 states and 3277 transitions. [2024-11-12 11:53:04,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 11:53:04,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 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 256 [2024-11-12 11:53:04,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:53:04,732 INFO L225 Difference]: With dead ends: 2267 [2024-11-12 11:53:04,733 INFO L226 Difference]: Without dead ends: 1417 [2024-11-12 11:53:04,735 INFO L434 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 [2024-11-12 11:53:04,735 INFO L435 NwaCegarLoop]: 1229 mSDtfsCounter, 24 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3535 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-12 11:53:04,736 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3535 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-12 11:53:04,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2024-11-12 11:53:04,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 1414. [2024-11-12 11:53:04,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1414 states, 1393 states have (on average 1.4149318018664752) internal successors, (1971), 1398 states have internal predecessors, (1971), 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) [2024-11-12 11:53:04,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1414 states to 1414 states and 2004 transitions. [2024-11-12 11:53:04,784 INFO L78 Accepts]: Start accepts. Automaton has 1414 states and 2004 transitions. Word has length 256 [2024-11-12 11:53:04,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:53:04,784 INFO L471 AbstractCegarLoop]: Abstraction has 1414 states and 2004 transitions. [2024-11-12 11:53:04,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 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) [2024-11-12 11:53:04,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1414 states and 2004 transitions. [2024-11-12 11:53:04,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-12 11:53:04,788 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:53:04,789 INFO L218 NwaCegarLoop]: trace histogram [4, 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, 1] [2024-11-12 11:53:04,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-12 11:53:04,789 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:53:04,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:53:04,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1193393397, now seen corresponding path program 1 times [2024-11-12 11:53:04,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:53:04,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931392433] [2024-11-12 11:53:04,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:53:04,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:53:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:06,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 11:53:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:06,035 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 11:53:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:06,040 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-12 11:53:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:06,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-12 11:53:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:06,050 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-12 11:53:06,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:53:06,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931392433] [2024-11-12 11:53:06,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931392433] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:53:06,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792429390] [2024-11-12 11:53:06,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:53:06,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:53:06,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:53:06,054 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 11:53:06,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 11:53:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:06,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-12 11:53:06,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:53:07,467 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 36 treesize of output 13 [2024-11-12 11:53:07,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-12 11:53:07,509 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-12 11:53:07,510 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 11:53:07,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792429390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:53:07,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 11:53:07,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-11-12 11:53:07,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902238351] [2024-11-12 11:53:07,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:53:07,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 11:53:07,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:53:07,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 11:53:07,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-12 11:53:07,514 INFO L87 Difference]: Start difference. First operand 1414 states and 2004 transitions. Second operand has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 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) [2024-11-12 11:53:08,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:53:08,026 INFO L93 Difference]: Finished difference Result 2618 states and 3725 transitions. [2024-11-12 11:53:08,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 11:53:08,027 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 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 256 [2024-11-12 11:53:08,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:53:08,036 INFO L225 Difference]: With dead ends: 2618 [2024-11-12 11:53:08,036 INFO L226 Difference]: Without dead ends: 1739 [2024-11-12 11:53:08,039 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 252 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-12 11:53:08,040 INFO L435 NwaCegarLoop]: 1200 mSDtfsCounter, 1873 mSDsluCounter, 3303 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1881 SdHoareTripleChecker+Valid, 4503 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-12 11:53:08,040 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1881 Valid, 4503 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-12 11:53:08,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2024-11-12 11:53:08,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 1585. [2024-11-12 11:53:08,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1554 states have (on average 1.4054054054054055) internal successors, (2184), 1563 states have internal predecessors, (2184), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (23), 17 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-12 11:53:08,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2231 transitions. [2024-11-12 11:53:08,120 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2231 transitions. Word has length 256 [2024-11-12 11:53:08,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:53:08,120 INFO L471 AbstractCegarLoop]: Abstraction has 1585 states and 2231 transitions. [2024-11-12 11:53:08,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 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) [2024-11-12 11:53:08,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2231 transitions. [2024-11-12 11:53:08,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-11-12 11:53:08,126 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:53:08,128 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 11:53:08,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-12 11:53:08,332 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 [2024-11-12 11:53:08,333 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:53:08,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:53:08,334 INFO L85 PathProgramCache]: Analyzing trace with hash -2078642948, now seen corresponding path program 1 times [2024-11-12 11:53:08,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:53:08,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106551894] [2024-11-12 11:53:08,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:53:08,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:53:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:09,915 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 11:53:09,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:09,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 11:53:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:09,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-12 11:53:09,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:09,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-12 11:53:09,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:09,937 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 74 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-12 11:53:09,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:53:09,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106551894] [2024-11-12 11:53:09,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106551894] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:53:09,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454977148] [2024-11-12 11:53:09,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:53:09,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:53:09,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:53:09,941 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 11:53:09,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 11:53:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:10,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 1643 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-12 11:53:10,822 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:53:10,831 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 15 treesize of output 1 [2024-11-12 11:53:11,222 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 36 treesize of output 13 [2024-11-12 11:53:11,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-12 11:53:11,240 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 74 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-12 11:53:11,241 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 11:53:11,575 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 74 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-12 11:53:11,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454977148] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 11:53:11,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 11:53:11,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 5] total 13 [2024-11-12 11:53:11,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301156827] [2024-11-12 11:53:11,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 11:53:11,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-12 11:53:11,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:53:11,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-12 11:53:11,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-12 11:53:11,579 INFO L87 Difference]: Start difference. First operand 1585 states and 2231 transitions. Second operand has 13 states, 13 states have (on average 37.46153846153846) internal successors, (487), 12 states have internal predecessors, (487), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-12 11:53:12,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:53:12,546 INFO L93 Difference]: Finished difference Result 3886 states and 5441 transitions. [2024-11-12 11:53:12,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 11:53:12,548 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 37.46153846153846) internal successors, (487), 12 states have internal predecessors, (487), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 333 [2024-11-12 11:53:12,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:53:12,560 INFO L225 Difference]: With dead ends: 3886 [2024-11-12 11:53:12,560 INFO L226 Difference]: Without dead ends: 2539 [2024-11-12 11:53:12,564 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 664 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2024-11-12 11:53:12,564 INFO L435 NwaCegarLoop]: 1203 mSDtfsCounter, 2361 mSDsluCounter, 8445 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2399 SdHoareTripleChecker+Valid, 9648 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-12 11:53:12,565 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2399 Valid, 9648 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-12 11:53:12,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2024-11-12 11:53:12,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 2242. [2024-11-12 11:53:12,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2242 states, 2199 states have (on average 1.3801728058208276) internal successors, (3035), 2208 states have internal predecessors, (3035), 35 states have call successors, (35), 7 states have call predecessors, (35), 7 states have return successors, (34), 28 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-12 11:53:12,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2242 states to 2242 states and 3104 transitions. [2024-11-12 11:53:12,648 INFO L78 Accepts]: Start accepts. Automaton has 2242 states and 3104 transitions. Word has length 333 [2024-11-12 11:53:12,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:53:12,649 INFO L471 AbstractCegarLoop]: Abstraction has 2242 states and 3104 transitions. [2024-11-12 11:53:12,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 37.46153846153846) internal successors, (487), 12 states have internal predecessors, (487), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-12 11:53:12,650 INFO L276 IsEmpty]: Start isEmpty. Operand 2242 states and 3104 transitions. [2024-11-12 11:53:12,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2024-11-12 11:53:12,665 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:53:12,667 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2024-11-12 11:53:12,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 11:53:12,871 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 [2024-11-12 11:53:12,872 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:53:12,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:53:12,873 INFO L85 PathProgramCache]: Analyzing trace with hash -70661301, now seen corresponding path program 1 times [2024-11-12 11:53:12,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:53:12,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294144085] [2024-11-12 11:53:12,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:53:12,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:53:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:19,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 11:53:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:19,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 11:53:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:19,726 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-12 11:53:19,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:19,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-12 11:53:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:19,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 296 proven. 896 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-12 11:53:19,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:53:19,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294144085] [2024-11-12 11:53:19,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294144085] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:53:19,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163863537] [2024-11-12 11:53:19,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:53:19,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:53:19,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:53:19,746 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 11:53:19,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 11:53:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:21,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 3764 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-12 11:53:21,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:53:21,274 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 15 treesize of output 1 [2024-11-12 11:53:21,618 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 36 treesize of output 13 [2024-11-12 11:53:21,828 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 36 treesize of output 13 [2024-11-12 11:53:22,042 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 36 treesize of output 13 [2024-11-12 11:53:22,261 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 36 treesize of output 13 [2024-11-12 11:53:22,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-12 11:53:22,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 296 proven. 896 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-12 11:53:22,281 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 11:53:23,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 296 proven. 896 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-12 11:53:23,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163863537] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 11:53:23,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 11:53:23,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 8] total 22 [2024-11-12 11:53:23,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120653] [2024-11-12 11:53:23,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 11:53:23,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-12 11:53:23,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:53:23,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-12 11:53:23,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2024-11-12 11:53:23,125 INFO L87 Difference]: Start difference. First operand 2242 states and 3104 transitions. Second operand has 22 states, 22 states have (on average 62.77272727272727) internal successors, (1381), 21 states have internal predecessors, (1381), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-12 11:53:24,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:53:24,508 INFO L93 Difference]: Finished difference Result 5644 states and 7814 transitions. [2024-11-12 11:53:24,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-12 11:53:24,509 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 62.77272727272727) internal successors, (1381), 21 states have internal predecessors, (1381), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 777 [2024-11-12 11:53:24,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:53:24,531 INFO L225 Difference]: With dead ends: 5644 [2024-11-12 11:53:24,531 INFO L226 Difference]: Without dead ends: 4297 [2024-11-12 11:53:24,537 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1588 GetRequests, 1550 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=292, Invalid=764, Unknown=0, NotChecked=0, Total=1056 [2024-11-12 11:53:24,538 INFO L435 NwaCegarLoop]: 1203 mSDtfsCounter, 4799 mSDsluCounter, 11046 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4885 SdHoareTripleChecker+Valid, 12249 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-12 11:53:24,538 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4885 Valid, 12249 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-12 11:53:24,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4297 states. [2024-11-12 11:53:24,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4297 to 4000. [2024-11-12 11:53:24,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4000 states, 3933 states have (on average 1.3559623696923468) internal successors, (5333), 3942 states have internal predecessors, (5333), 59 states have call successors, (59), 7 states have call predecessors, (59), 7 states have return successors, (58), 52 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-12 11:53:24,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4000 states to 4000 states and 5450 transitions. [2024-11-12 11:53:24,682 INFO L78 Accepts]: Start accepts. Automaton has 4000 states and 5450 transitions. Word has length 777 [2024-11-12 11:53:24,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:53:24,684 INFO L471 AbstractCegarLoop]: Abstraction has 4000 states and 5450 transitions. [2024-11-12 11:53:24,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 62.77272727272727) internal successors, (1381), 21 states have internal predecessors, (1381), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-12 11:53:24,685 INFO L276 IsEmpty]: Start isEmpty. Operand 4000 states and 5450 transitions. [2024-11-12 11:53:24,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1666 [2024-11-12 11:53:24,770 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:53:24,771 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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, 4, 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, 1] [2024-11-12 11:53:24,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-12 11:53:24,971 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 [2024-11-12 11:53:24,972 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:53:24,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:53:24,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1580428905, now seen corresponding path program 2 times [2024-11-12 11:53:24,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:53:24,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606793732] [2024-11-12 11:53:24,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:53:24,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:53:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:33,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 11:53:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:33,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 11:53:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:33,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-12 11:53:33,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:33,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-12 11:53:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:33,138 INFO L134 CoverageAnalysis]: Checked inductivity of 7438 backedges. 2015 proven. 76 refuted. 0 times theorem prover too weak. 5347 trivial. 0 not checked. [2024-11-12 11:53:33,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:53:33,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606793732] [2024-11-12 11:53:33,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606793732] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:53:33,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659140287] [2024-11-12 11:53:33,140 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 11:53:33,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:53:33,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:53:33,142 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 11:53:33,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 11:53:34,595 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-12 11:53:34,596 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 11:53:34,602 INFO L256 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-12 11:53:34,630 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:53:34,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-12 11:53:35,309 INFO L134 CoverageAnalysis]: Checked inductivity of 7438 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7438 trivial. 0 not checked. [2024-11-12 11:53:35,310 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 11:53:35,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659140287] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:53:35,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 11:53:35,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2024-11-12 11:53:35,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463148972] [2024-11-12 11:53:35,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:53:35,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 11:53:35,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:53:35,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 11:53:35,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-12 11:53:35,314 INFO L87 Difference]: Start difference. First operand 4000 states and 5450 transitions. Second operand has 10 states, 10 states have (on average 24.3) internal successors, (243), 10 states have internal predecessors, (243), 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) [2024-11-12 11:53:36,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:53:36,422 INFO L93 Difference]: Finished difference Result 4862 states and 6729 transitions. [2024-11-12 11:53:36,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 11:53:36,423 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 24.3) internal successors, (243), 10 states have internal predecessors, (243), 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 1665 [2024-11-12 11:53:36,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:53:36,441 INFO L225 Difference]: With dead ends: 4862 [2024-11-12 11:53:36,441 INFO L226 Difference]: Without dead ends: 4006 [2024-11-12 11:53:36,444 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1690 GetRequests, 1667 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2024-11-12 11:53:36,445 INFO L435 NwaCegarLoop]: 1236 mSDtfsCounter, 388 mSDsluCounter, 7633 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 8869 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-12 11:53:36,445 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 8869 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-12 11:53:36,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4006 states. [2024-11-12 11:53:36,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4006 to 4003. [2024-11-12 11:53:36,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4003 states, 3936 states have (on average 1.3556910569105691) internal successors, (5336), 3945 states have internal predecessors, (5336), 59 states have call successors, (59), 7 states have call predecessors, (59), 7 states have return successors, (58), 52 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-12 11:53:36,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4003 states to 4003 states and 5453 transitions. [2024-11-12 11:53:36,553 INFO L78 Accepts]: Start accepts. Automaton has 4003 states and 5453 transitions. Word has length 1665 [2024-11-12 11:53:36,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:53:36,555 INFO L471 AbstractCegarLoop]: Abstraction has 4003 states and 5453 transitions. [2024-11-12 11:53:36,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.3) internal successors, (243), 10 states have internal predecessors, (243), 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) [2024-11-12 11:53:36,556 INFO L276 IsEmpty]: Start isEmpty. Operand 4003 states and 5453 transitions. [2024-11-12 11:53:36,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1666 [2024-11-12 11:53:36,577 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:53:36,578 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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, 4, 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, 1] [2024-11-12 11:53:36,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-12 11:53:36,778 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 [2024-11-12 11:53:36,779 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:53:36,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:53:36,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1157902433, now seen corresponding path program 1 times [2024-11-12 11:53:36,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:53:36,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238676744] [2024-11-12 11:53:36,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:53:36,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:53:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:39,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 11:53:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:39,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 11:53:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:39,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-12 11:53:39,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:39,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-12 11:53:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:39,311 INFO L134 CoverageAnalysis]: Checked inductivity of 7438 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7438 trivial. 0 not checked. [2024-11-12 11:53:39,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:53:39,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238676744] [2024-11-12 11:53:39,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238676744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:53:39,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:53:39,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 11:53:39,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582086530] [2024-11-12 11:53:39,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:53:39,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 11:53:39,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:53:39,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 11:53:39,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 11:53:39,314 INFO L87 Difference]: Start difference. First operand 4003 states and 5453 transitions. Second operand has 5 states, 5 states have (on average 48.6) internal successors, (243), 4 states have internal predecessors, (243), 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) [2024-11-12 11:53:39,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:53:39,988 INFO L93 Difference]: Finished difference Result 4871 states and 6782 transitions. [2024-11-12 11:53:39,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 11:53:39,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.6) internal successors, (243), 4 states have internal predecessors, (243), 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 1665 [2024-11-12 11:53:39,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:53:40,007 INFO L225 Difference]: With dead ends: 4871 [2024-11-12 11:53:40,007 INFO L226 Difference]: Without dead ends: 4003 [2024-11-12 11:53:40,016 INFO L434 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 [2024-11-12 11:53:40,019 INFO L435 NwaCegarLoop]: 1214 mSDtfsCounter, 32 mSDsluCounter, 3490 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 4704 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-12 11:53:40,019 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 4704 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-12 11:53:40,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4003 states. [2024-11-12 11:53:40,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4003 to 3994. [2024-11-12 11:53:40,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3994 states, 3927 states have (on average 1.3559969442322384) internal successors, (5325), 3936 states have internal predecessors, (5325), 59 states have call successors, (59), 7 states have call predecessors, (59), 7 states have return successors, (58), 52 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-12 11:53:40,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3994 states to 3994 states and 5442 transitions. [2024-11-12 11:53:40,186 INFO L78 Accepts]: Start accepts. Automaton has 3994 states and 5442 transitions. Word has length 1665 [2024-11-12 11:53:40,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:53:40,190 INFO L471 AbstractCegarLoop]: Abstraction has 3994 states and 5442 transitions. [2024-11-12 11:53:40,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.6) internal successors, (243), 4 states have internal predecessors, (243), 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) [2024-11-12 11:53:40,190 INFO L276 IsEmpty]: Start isEmpty. Operand 3994 states and 5442 transitions. [2024-11-12 11:53:40,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1667 [2024-11-12 11:53:40,231 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:53:40,232 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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, 4, 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, 1, 1] [2024-11-12 11:53:40,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-12 11:53:40,232 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:53:40,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:53:40,234 INFO L85 PathProgramCache]: Analyzing trace with hash 141876415, now seen corresponding path program 1 times [2024-11-12 11:53:40,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:53:40,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314397539] [2024-11-12 11:53:40,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:53:40,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:53:42,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:47,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 11:53:47,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:47,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 11:53:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:47,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-12 11:53:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:47,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-12 11:53:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:47,636 INFO L134 CoverageAnalysis]: Checked inductivity of 7438 backedges. 2015 proven. 76 refuted. 0 times theorem prover too weak. 5347 trivial. 0 not checked. [2024-11-12 11:53:47,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:53:47,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314397539] [2024-11-12 11:53:47,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314397539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:53:47,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811240788] [2024-11-12 11:53:47,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:53:47,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:53:47,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:53:47,639 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 11:53:47,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 11:53:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:53:50,266 INFO L256 TraceCheckSpWp]: Trace formula consists of 8007 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-12 11:53:50,294 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:53:50,614 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 36 treesize of output 13 [2024-11-12 11:53:50,794 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 36 treesize of output 13 [2024-11-12 11:53:50,974 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 36 treesize of output 13 [2024-11-12 11:53:51,162 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 36 treesize of output 13 [2024-11-12 11:53:51,372 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 36 treesize of output 13 [2024-11-12 11:53:51,579 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 36 treesize of output 13