./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.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_OAT_test10-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 93cc62483e7301c05d7788622f4f3fa5962cd13b8481778ecaf6adfc0416e51e --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 11:56:34,692 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 11:56:34,748 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 11:56:34,752 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 11:56:34,752 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 11:56:34,780 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 11:56:34,781 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 11:56:34,781 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 11:56:34,782 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 11:56:34,783 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 11:56:34,784 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 11:56:34,784 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 11:56:34,785 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 11:56:34,785 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 11:56:34,787 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 11:56:34,787 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 11:56:34,788 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 11:56:34,788 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 11:56:34,788 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 11:56:34,788 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 11:56:34,789 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 11:56:34,792 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 11:56:34,792 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 11:56:34,792 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 11:56:34,793 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 11:56:34,793 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 11:56:34,793 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 11:56:34,793 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 11:56:34,793 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 11:56:34,794 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 11:56:34,794 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 11:56:34,794 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 11:56:34,794 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 11:56:34,794 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 11:56:34,795 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 11:56:34,795 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 11:56:34,797 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 11:56:34,797 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 11:56:34,797 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 11:56:34,797 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 11:56:34,797 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 11:56:34,798 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 11:56:34,798 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93cc62483e7301c05d7788622f4f3fa5962cd13b8481778ecaf6adfc0416e51e [2024-11-12 11:56:35,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 11:56:35,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 11:56:35,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 11:56:35,086 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 11:56:35,086 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 11:56:35,087 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i [2024-11-12 11:56:36,451 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 11:56:36,745 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 11:56:36,747 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i [2024-11-12 11:56:36,765 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/998dc31b1/c071b10e01b84049b21f2f3ba5bbaae0/FLAG91abf531b [2024-11-12 11:56:36,779 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/998dc31b1/c071b10e01b84049b21f2f3ba5bbaae0 [2024-11-12 11:56:36,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 11:56:36,783 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 11:56:36,784 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 11:56:36,785 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 11:56:36,789 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 11:56:36,790 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:56:36" (1/1) ... [2024-11-12 11:56:36,790 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5727d008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:56:36, skipping insertion in model container [2024-11-12 11:56:36,791 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:56:36" (1/1) ... [2024-11-12 11:56:36,853 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 11:56:37,242 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i[33022,33035] [2024-11-12 11:56:37,411 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 11:56:37,418 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 11:56:37,449 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i[33022,33035] [2024-11-12 11:56:37,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 11:56:37,578 INFO L204 MainTranslator]: Completed translation [2024-11-12 11:56:37,578 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:56:37 WrapperNode [2024-11-12 11:56:37,579 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 11:56:37,579 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 11:56:37,580 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 11:56:37,580 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 11:56:37,585 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:56:37" (1/1) ... [2024-11-12 11:56:37,643 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:56:37" (1/1) ... [2024-11-12 11:56:37,732 INFO L138 Inliner]: procedures = 177, calls = 605, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3725 [2024-11-12 11:56:37,732 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 11:56:37,733 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 11:56:37,733 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 11:56:37,733 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 11:56:37,743 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:56:37" (1/1) ... [2024-11-12 11:56:37,743 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:56:37" (1/1) ... [2024-11-12 11:56:37,760 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:56:37" (1/1) ... [2024-11-12 11:56:37,945 INFO L175 MemorySlicer]: Split 574 memory accesses to 3 slices as follows [2, 106, 466]. 81 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 102 writes are split as follows [0, 4, 98]. [2024-11-12 11:56:37,945 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:56:37" (1/1) ... [2024-11-12 11:56:37,946 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:56:37" (1/1) ... [2024-11-12 11:56:38,035 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:56:37" (1/1) ... [2024-11-12 11:56:38,105 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:56:37" (1/1) ... [2024-11-12 11:56:38,119 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:56:37" (1/1) ... [2024-11-12 11:56:38,129 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:56:37" (1/1) ... [2024-11-12 11:56:38,153 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 11:56:38,154 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 11:56:38,155 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 11:56:38,155 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 11:56:38,155 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:56:37" (1/1) ... [2024-11-12 11:56:38,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 11:56:38,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:56:38,180 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 11:56:38,192 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 11:56:38,234 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2024-11-12 11:56:38,234 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2024-11-12 11:56:38,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 11:56:38,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 11:56:38,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-12 11:56:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-12 11:56:38,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-12 11:56:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 11:56:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 11:56:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-12 11:56:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-12 11:56:38,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-12 11:56:38,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-12 11:56:38,238 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-12 11:56:38,238 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-12 11:56:38,238 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-12 11:56:38,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 11:56:38,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 11:56:38,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-12 11:56:38,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-12 11:56:38,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-12 11:56:38,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-12 11:56:38,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-12 11:56:38,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-12 11:56:38,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-12 11:56:38,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-12 11:56:38,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 11:56:38,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 11:56:38,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-12 11:56:38,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 11:56:38,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 11:56:38,526 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 11:56:38,528 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 11:56:40,679 INFO L? ?]: Removed 823 outVars from TransFormulas that were not future-live. [2024-11-12 11:56:40,680 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 11:56:40,704 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 11:56:40,704 INFO L316 CfgBuilder]: Removed 168 assume(true) statements. [2024-11-12 11:56:40,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:56:40 BoogieIcfgContainer [2024-11-12 11:56:40,705 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 11:56:40,707 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 11:56:40,707 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 11:56:40,709 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 11:56:40,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:56:36" (1/3) ... [2024-11-12 11:56:40,710 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff41484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:56:40, skipping insertion in model container [2024-11-12 11:56:40,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:56:37" (2/3) ... [2024-11-12 11:56:40,710 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ff41484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:56:40, skipping insertion in model container [2024-11-12 11:56:40,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:56:40" (3/3) ... [2024-11-12 11:56:40,711 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test10-3.i [2024-11-12 11:56:40,723 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 11:56:40,724 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-12 11:56:40,803 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 11:56:40,809 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;@5d5047c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 11:56:40,809 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-12 11:56:40,816 INFO L276 IsEmpty]: Start isEmpty. Operand has 1092 states, 1073 states have (on average 1.6290773532152842) internal successors, (1748), 1078 states have internal predecessors, (1748), 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 11:56:40,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-12 11:56:40,823 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:56:40,824 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 11:56:40,824 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:56:40,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:56:40,830 INFO L85 PathProgramCache]: Analyzing trace with hash 2411661, now seen corresponding path program 1 times [2024-11-12 11:56:40,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:56:40,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119180849] [2024-11-12 11:56:40,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:56:40,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:56:40,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:41,001 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 11:56:41,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:56:41,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119180849] [2024-11-12 11:56:41,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119180849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:56:41,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:56:41,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 11:56:41,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923700568] [2024-11-12 11:56:41,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:56:41,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-12 11:56:41,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:56:41,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-12 11:56:41,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-12 11:56:41,037 INFO L87 Difference]: Start difference. First operand has 1092 states, 1073 states have (on average 1.6290773532152842) internal successors, (1748), 1078 states have internal predecessors, (1748), 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 11:56:41,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:56:41,131 INFO L93 Difference]: Finished difference Result 2182 states and 3558 transitions. [2024-11-12 11:56:41,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-12 11:56:41,133 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 11:56:41,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:56:41,152 INFO L225 Difference]: With dead ends: 2182 [2024-11-12 11:56:41,153 INFO L226 Difference]: Without dead ends: 1026 [2024-11-12 11:56:41,160 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 11:56:41,164 INFO L435 NwaCegarLoop]: 1600 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, 1600 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 11:56:41,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 11:56:41,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2024-11-12 11:56:41,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1026. [2024-11-12 11:56:41,242 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 11:56:41,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1511 transitions. [2024-11-12 11:56:41,248 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1511 transitions. Word has length 13 [2024-11-12 11:56:41,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:56:41,249 INFO L471 AbstractCegarLoop]: Abstraction has 1026 states and 1511 transitions. [2024-11-12 11:56:41,250 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 11:56:41,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1511 transitions. [2024-11-12 11:56:41,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-12 11:56:41,255 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:56:41,255 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 11:56:41,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 11:56:41,255 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:56:41,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:56:41,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1315650717, now seen corresponding path program 1 times [2024-11-12 11:56:41,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:56:41,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683942314] [2024-11-12 11:56:41,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:56:41,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:56:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:41,673 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 11:56:41,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:56:41,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683942314] [2024-11-12 11:56:41,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683942314] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:56:41,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:56:41,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 11:56:41,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442402693] [2024-11-12 11:56:41,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:56:41,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 11:56:41,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:56:41,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 11:56:41,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 11:56:41,681 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 11:56:42,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:56:42,004 INFO L93 Difference]: Finished difference Result 2046 states and 3016 transitions. [2024-11-12 11:56:42,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 11:56:42,009 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 11:56:42,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:56:42,013 INFO L225 Difference]: With dead ends: 2046 [2024-11-12 11:56:42,014 INFO L226 Difference]: Without dead ends: 1412 [2024-11-12 11:56:42,015 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 11:56:42,015 INFO L435 NwaCegarLoop]: 1550 mSDtfsCounter, 548 mSDsluCounter, 2991 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 11:56:42,016 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 11:56:42,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2024-11-12 11:56:42,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1028. [2024-11-12 11:56:42,034 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 11:56:42,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1513 transitions. [2024-11-12 11:56:42,038 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1513 transitions. Word has length 68 [2024-11-12 11:56:42,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:56:42,039 INFO L471 AbstractCegarLoop]: Abstraction has 1028 states and 1513 transitions. [2024-11-12 11:56:42,039 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 11:56:42,039 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1513 transitions. [2024-11-12 11:56:42,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-12 11:56:42,049 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:56:42,049 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 11:56:42,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 11:56:42,050 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:56:42,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:56:42,051 INFO L85 PathProgramCache]: Analyzing trace with hash 460598544, now seen corresponding path program 1 times [2024-11-12 11:56:42,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:56:42,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043392652] [2024-11-12 11:56:42,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:56:42,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:56:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:42,596 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 11:56:42,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:56:42,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043392652] [2024-11-12 11:56:42,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043392652] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:56:42,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:56:42,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 11:56:42,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766682365] [2024-11-12 11:56:42,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:56:42,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 11:56:42,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:56:42,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 11:56:42,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-12 11:56:42,600 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 11:56:42,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:56:42,820 INFO L93 Difference]: Finished difference Result 2436 states and 3581 transitions. [2024-11-12 11:56:42,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 11:56:42,820 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 11:56:42,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:56:42,857 INFO L225 Difference]: With dead ends: 2436 [2024-11-12 11:56:42,857 INFO L226 Difference]: Without dead ends: 1412 [2024-11-12 11:56:42,861 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 11:56:42,862 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 546 mSDsluCounter, 4933 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 6439 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-12 11:56:42,864 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 6439 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-12 11:56:42,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2024-11-12 11:56:42,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1031. [2024-11-12 11:56:42,881 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 11:56:42,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1516 transitions. [2024-11-12 11:56:42,886 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1516 transitions. Word has length 145 [2024-11-12 11:56:42,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:56:42,887 INFO L471 AbstractCegarLoop]: Abstraction has 1031 states and 1516 transitions. [2024-11-12 11:56:42,887 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 11:56:42,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1516 transitions. [2024-11-12 11:56:42,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-12 11:56:42,890 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:56:42,890 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 11:56:42,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 11:56:42,891 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:56:42,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:56:42,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1746921408, now seen corresponding path program 1 times [2024-11-12 11:56:42,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:56:42,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049560659] [2024-11-12 11:56:42,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:56:42,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:56:42,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:43,185 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 11:56:43,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:56:43,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049560659] [2024-11-12 11:56:43,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049560659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:56:43,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:56:43,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 11:56:43,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740311511] [2024-11-12 11:56:43,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:56:43,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 11:56:43,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:56:43,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 11:56:43,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 11:56:43,188 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 11:56:43,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:56:43,260 INFO L93 Difference]: Finished difference Result 2013 states and 2959 transitions. [2024-11-12 11:56:43,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 11:56:43,260 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 11:56:43,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:56:43,264 INFO L225 Difference]: With dead ends: 2013 [2024-11-12 11:56:43,264 INFO L226 Difference]: Without dead ends: 989 [2024-11-12 11:56:43,265 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 11:56:43,266 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, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 11:56:43,266 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 4208 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 11:56:43,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2024-11-12 11:56:43,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 989. [2024-11-12 11:56:43,278 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 11:56:43,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1439 transitions. [2024-11-12 11:56:43,281 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1439 transitions. Word has length 216 [2024-11-12 11:56:43,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:56:43,282 INFO L471 AbstractCegarLoop]: Abstraction has 989 states and 1439 transitions. [2024-11-12 11:56:43,282 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 11:56:43,282 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1439 transitions. [2024-11-12 11:56:43,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-12 11:56:43,284 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:56:43,284 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 11:56:43,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 11:56:43,284 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:56:43,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:56:43,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1296812108, now seen corresponding path program 1 times [2024-11-12 11:56:43,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:56:43,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493564171] [2024-11-12 11:56:43,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:56:43,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:56:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:43,503 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 11:56:43,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:56:43,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493564171] [2024-11-12 11:56:43,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493564171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:56:43,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:56:43,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 11:56:43,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357506167] [2024-11-12 11:56:43,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:56:43,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 11:56:43,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:56:43,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 11:56:43,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 11:56:43,506 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 11:56:43,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:56:43,572 INFO L93 Difference]: Finished difference Result 2502 states and 3654 transitions. [2024-11-12 11:56:43,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 11:56:43,573 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 11:56:43,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:56:43,578 INFO L225 Difference]: With dead ends: 2502 [2024-11-12 11:56:43,578 INFO L226 Difference]: Without dead ends: 1520 [2024-11-12 11:56:43,580 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 11:56:43,581 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, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 11:56:43,581 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 2834 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 11:56:43,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2024-11-12 11:56:43,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1361. [2024-11-12 11:56:43,601 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 11:56:43,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1985 transitions. [2024-11-12 11:56:43,606 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1985 transitions. Word has length 216 [2024-11-12 11:56:43,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:56:43,608 INFO L471 AbstractCegarLoop]: Abstraction has 1361 states and 1985 transitions. [2024-11-12 11:56:43,608 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 11:56:43,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1985 transitions. [2024-11-12 11:56:43,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-12 11:56:43,610 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:56:43,610 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 11:56:43,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 11:56:43,612 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:56:43,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:56:43,613 INFO L85 PathProgramCache]: Analyzing trace with hash 865171623, now seen corresponding path program 1 times [2024-11-12 11:56:43,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:56:43,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529191795] [2024-11-12 11:56:43,613 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:56:43,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:56:43,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:44,032 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 11:56:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:44,035 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 11:56:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:44,038 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 11:56:44,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:56:44,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529191795] [2024-11-12 11:56:44,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529191795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:56:44,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:56:44,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 11:56:44,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290313386] [2024-11-12 11:56:44,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:56:44,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 11:56:44,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:56:44,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 11:56:44,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 11:56:44,041 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 11:56:44,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:56:44,399 INFO L93 Difference]: Finished difference Result 2591 states and 3790 transitions. [2024-11-12 11:56:44,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 11:56:44,399 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 11:56:44,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:56:44,404 INFO L225 Difference]: With dead ends: 2591 [2024-11-12 11:56:44,404 INFO L226 Difference]: Without dead ends: 1322 [2024-11-12 11:56:44,406 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 11:56:44,406 INFO L435 NwaCegarLoop]: 1301 mSDtfsCounter, 53 mSDsluCounter, 3751 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 11:56:44,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 5052 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 11:56:44,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2024-11-12 11:56:44,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1319. [2024-11-12 11:56:44,425 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 11:56:44,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1908 transitions. [2024-11-12 11:56:44,429 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1908 transitions. Word has length 231 [2024-11-12 11:56:44,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:56:44,430 INFO L471 AbstractCegarLoop]: Abstraction has 1319 states and 1908 transitions. [2024-11-12 11:56:44,430 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 11:56:44,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1908 transitions. [2024-11-12 11:56:44,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-12 11:56:44,454 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:56:44,454 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 11:56:44,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 11:56:44,455 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:56:44,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:56:44,455 INFO L85 PathProgramCache]: Analyzing trace with hash 489364659, now seen corresponding path program 1 times [2024-11-12 11:56:44,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:56:44,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677809237] [2024-11-12 11:56:44,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:56:44,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:56:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:44,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 11:56:44,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:44,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 11:56:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:44,734 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 11:56:44,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:56:44,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677809237] [2024-11-12 11:56:44,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677809237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:56:44,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:56:44,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 11:56:44,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792377170] [2024-11-12 11:56:44,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:56:44,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 11:56:44,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:56:44,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 11:56:44,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 11:56:44,737 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 11:56:45,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:56:45,072 INFO L93 Difference]: Finished difference Result 2549 states and 3702 transitions. [2024-11-12 11:56:45,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 11:56:45,073 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 11:56:45,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:56:45,078 INFO L225 Difference]: With dead ends: 2549 [2024-11-12 11:56:45,078 INFO L226 Difference]: Without dead ends: 1322 [2024-11-12 11:56:45,080 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 11:56:45,080 INFO L435 NwaCegarLoop]: 1314 mSDtfsCounter, 24 mSDsluCounter, 2479 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 11:56:45,081 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3793 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 11:56:45,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2024-11-12 11:56:45,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1319. [2024-11-12 11:56:45,104 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 11:56:45,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1905 transitions. [2024-11-12 11:56:45,109 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1905 transitions. Word has length 231 [2024-11-12 11:56:45,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:56:45,109 INFO L471 AbstractCegarLoop]: Abstraction has 1319 states and 1905 transitions. [2024-11-12 11:56:45,109 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 11:56:45,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1905 transitions. [2024-11-12 11:56:45,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-12 11:56:45,112 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:56:45,112 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 11:56:45,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 11:56:45,113 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:56:45,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:56:45,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1237780303, now seen corresponding path program 1 times [2024-11-12 11:56:45,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:56:45,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33713678] [2024-11-12 11:56:45,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:56:45,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:56:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:45,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 11:56:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:45,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 11:56:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:45,357 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 11:56:45,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:56:45,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33713678] [2024-11-12 11:56:45,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33713678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:56:45,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:56:45,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 11:56:45,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580370768] [2024-11-12 11:56:45,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:56:45,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 11:56:45,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:56:45,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 11:56:45,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 11:56:45,359 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 11:56:45,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:56:45,726 INFO L93 Difference]: Finished difference Result 3120 states and 4530 transitions. [2024-11-12 11:56:45,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 11:56:45,726 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 11:56:45,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:56:45,733 INFO L225 Difference]: With dead ends: 3120 [2024-11-12 11:56:45,733 INFO L226 Difference]: Without dead ends: 1893 [2024-11-12 11:56:45,735 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 11:56:45,736 INFO L435 NwaCegarLoop]: 1543 mSDtfsCounter, 619 mSDsluCounter, 2705 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 4248 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 11:56:45,736 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 4248 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 11:56:45,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2024-11-12 11:56:45,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1885. [2024-11-12 11:56:45,764 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 11:56:45,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 2729 transitions. [2024-11-12 11:56:45,770 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 2729 transitions. Word has length 231 [2024-11-12 11:56:45,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:56:45,770 INFO L471 AbstractCegarLoop]: Abstraction has 1885 states and 2729 transitions. [2024-11-12 11:56:45,771 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 11:56:45,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 2729 transitions. [2024-11-12 11:56:45,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-12 11:56:45,773 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:56:45,773 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 11:56:45,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-12 11:56:45,773 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:56:45,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:56:45,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1062532261, now seen corresponding path program 1 times [2024-11-12 11:56:45,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:56:45,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590071286] [2024-11-12 11:56:45,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:56:45,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:56:45,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:46,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 11:56:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:46,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 11:56:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:46,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-12 11:56:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:46,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-12 11:56:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:46,123 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 11:56:46,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:56:46,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590071286] [2024-11-12 11:56:46,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590071286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:56:46,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:56:46,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 11:56:46,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887336742] [2024-11-12 11:56:46,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:56:46,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 11:56:46,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:56:46,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 11:56:46,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-12 11:56:46,126 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 11:56:46,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:56:46,946 INFO L93 Difference]: Finished difference Result 4073 states and 5947 transitions. [2024-11-12 11:56:46,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 11:56:46,946 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 11:56:46,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:56:46,954 INFO L225 Difference]: With dead ends: 4073 [2024-11-12 11:56:46,954 INFO L226 Difference]: Without dead ends: 2426 [2024-11-12 11:56:46,957 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 11:56:46,957 INFO L435 NwaCegarLoop]: 1358 mSDtfsCounter, 4642 mSDsluCounter, 2764 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4653 SdHoareTripleChecker+Valid, 4122 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-12 11:56:46,957 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4653 Valid, 4122 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-12 11:56:46,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2024-11-12 11:56:46,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 1456. [2024-11-12 11:56:46,990 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 11:56:46,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 2084 transitions. [2024-11-12 11:56:46,993 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 2084 transitions. Word has length 246 [2024-11-12 11:56:46,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:56:46,994 INFO L471 AbstractCegarLoop]: Abstraction has 1456 states and 2084 transitions. [2024-11-12 11:56:46,994 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 11:56:46,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 2084 transitions. [2024-11-12 11:56:46,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-12 11:56:46,996 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:56:46,997 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 11:56:46,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-12 11:56:46,997 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:56:46,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:56:46,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1928546641, now seen corresponding path program 1 times [2024-11-12 11:56:46,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:56:46,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839460684] [2024-11-12 11:56:46,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:56:46,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:56:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:47,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 11:56:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:47,279 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 11:56:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:47,280 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-12 11:56:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:47,282 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-12 11:56:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:47,284 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 11:56:47,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:56:47,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839460684] [2024-11-12 11:56:47,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839460684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:56:47,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:56:47,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 11:56:47,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325639004] [2024-11-12 11:56:47,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:56:47,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 11:56:47,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:56:47,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 11:56:47,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 11:56:47,286 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 11:56:47,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:56:47,679 INFO L93 Difference]: Finished difference Result 2334 states and 3394 transitions. [2024-11-12 11:56:47,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 11:56:47,679 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 11:56:47,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:56:47,684 INFO L225 Difference]: With dead ends: 2334 [2024-11-12 11:56:47,684 INFO L226 Difference]: Without dead ends: 1417 [2024-11-12 11:56:47,685 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 11:56:47,686 INFO L435 NwaCegarLoop]: 1215 mSDtfsCounter, 53 mSDsluCounter, 3494 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 11:56:47,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 4709 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 11:56:47,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2024-11-12 11:56:47,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 1414. [2024-11-12 11:56:47,713 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 11:56:47,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1414 states to 1414 states and 2007 transitions. [2024-11-12 11:56:47,716 INFO L78 Accepts]: Start accepts. Automaton has 1414 states and 2007 transitions. Word has length 256 [2024-11-12 11:56:47,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:56:47,716 INFO L471 AbstractCegarLoop]: Abstraction has 1414 states and 2007 transitions. [2024-11-12 11:56:47,716 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 11:56:47,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1414 states and 2007 transitions. [2024-11-12 11:56:47,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-12 11:56:47,719 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:56:47,719 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 11:56:47,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-12 11:56:47,719 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:56:47,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:56:47,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1588088161, now seen corresponding path program 1 times [2024-11-12 11:56:47,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:56:47,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707125223] [2024-11-12 11:56:47,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:56:47,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:56:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:47,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 11:56:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:47,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 11:56:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:47,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-12 11:56:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:47,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-12 11:56:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:47,974 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 11:56:47,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:56:47,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707125223] [2024-11-12 11:56:47,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707125223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:56:47,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:56:47,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 11:56:47,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150293368] [2024-11-12 11:56:47,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:56:47,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 11:56:47,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:56:47,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 11:56:47,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 11:56:47,978 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 11:56:48,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:56:48,385 INFO L93 Difference]: Finished difference Result 2267 states and 3277 transitions. [2024-11-12 11:56:48,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 11:56:48,386 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 11:56:48,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:56:48,390 INFO L225 Difference]: With dead ends: 2267 [2024-11-12 11:56:48,391 INFO L226 Difference]: Without dead ends: 1417 [2024-11-12 11:56:48,392 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 11:56:48,392 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 11:56:48,393 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 11:56:48,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2024-11-12 11:56:48,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 1414. [2024-11-12 11:56:48,417 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 11:56:48,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1414 states to 1414 states and 2004 transitions. [2024-11-12 11:56:48,419 INFO L78 Accepts]: Start accepts. Automaton has 1414 states and 2004 transitions. Word has length 256 [2024-11-12 11:56:48,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:56:48,420 INFO L471 AbstractCegarLoop]: Abstraction has 1414 states and 2004 transitions. [2024-11-12 11:56:48,420 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 11:56:48,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1414 states and 2004 transitions. [2024-11-12 11:56:48,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-12 11:56:48,422 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:56:48,422 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 11:56:48,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-12 11:56:48,422 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:56:48,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:56:48,423 INFO L85 PathProgramCache]: Analyzing trace with hash 130006373, now seen corresponding path program 1 times [2024-11-12 11:56:48,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:56:48,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020855333] [2024-11-12 11:56:48,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:56:48,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:56:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:49,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 11:56:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:49,273 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 11:56:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:49,275 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-12 11:56:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:49,279 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-12 11:56:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:49,283 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 11:56:49,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:56:49,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020855333] [2024-11-12 11:56:49,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020855333] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:56:49,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193182202] [2024-11-12 11:56:49,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:56:49,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:56:49,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:56:49,288 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 11:56:49,297 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 11:56:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:49,792 INFO L256 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-12 11:56:49,803 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:56:50,203 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 11:56:50,217 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 11:56:50,231 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 11:56:50,231 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 11:56:50,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193182202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:56:50,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 11:56:50,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-11-12 11:56:50,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278928368] [2024-11-12 11:56:50,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:56:50,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 11:56:50,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:56:50,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 11:56:50,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-12 11:56:50,234 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 11:56:54,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-12 11:56:55,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:56:55,623 INFO L93 Difference]: Finished difference Result 2618 states and 3725 transitions. [2024-11-12 11:56:55,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 11:56:55,624 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 11:56:55,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:56:55,630 INFO L225 Difference]: With dead ends: 2618 [2024-11-12 11:56:55,630 INFO L226 Difference]: Without dead ends: 1739 [2024-11-12 11:56:55,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 252 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-12 11:56:55,632 INFO L435 NwaCegarLoop]: 1200 mSDtfsCounter, 1270 mSDsluCounter, 3964 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1278 SdHoareTripleChecker+Valid, 5164 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-12 11:56:55,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1278 Valid, 5164 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 329 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2024-11-12 11:56:55,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2024-11-12 11:56:55,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 1585. [2024-11-12 11:56:55,679 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 11:56:55,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2231 transitions. [2024-11-12 11:56:55,683 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2231 transitions. Word has length 256 [2024-11-12 11:56:55,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:56:55,684 INFO L471 AbstractCegarLoop]: Abstraction has 1585 states and 2231 transitions. [2024-11-12 11:56:55,684 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 11:56:55,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2231 transitions. [2024-11-12 11:56:55,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-11-12 11:56:55,688 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:56:55,689 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 11:56:55,707 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 11:56:55,893 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 11:56:55,894 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:56:55,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:56:55,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1476164972, now seen corresponding path program 1 times [2024-11-12 11:56:55,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:56:55,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027833629] [2024-11-12 11:56:55,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:56:55,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:56:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:57,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 11:56:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:57,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 11:56:57,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:57,132 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-12 11:56:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:57,135 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-12 11:56:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:57,138 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 11:56:57,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:56:57,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027833629] [2024-11-12 11:56:57,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027833629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:56:57,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336228589] [2024-11-12 11:56:57,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:56:57,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:56:57,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:56:57,140 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 11:56:57,148 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 11:56:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:56:57,751 INFO L256 TraceCheckSpWp]: Trace formula consists of 1643 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-12 11:56:57,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:56:57,774 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 11:56:58,058 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 11:56:58,066 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 11:56:58,071 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 11:56:58,071 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 11:56:58,321 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 11:56:58,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336228589] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 11:56:58,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 11:56:58,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 5] total 13 [2024-11-12 11:56:58,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534229556] [2024-11-12 11:56:58,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 11:56:58,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-12 11:56:58,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:56:58,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-12 11:56:58,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-12 11:56:58,324 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 11:56:59,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:56:59,237 INFO L93 Difference]: Finished difference Result 3886 states and 5441 transitions. [2024-11-12 11:56:59,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-12 11:56:59,238 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 11:56:59,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:56:59,245 INFO L225 Difference]: With dead ends: 3886 [2024-11-12 11:56:59,245 INFO L226 Difference]: Without dead ends: 2539 [2024-11-12 11:56:59,248 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 663 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2024-11-12 11:56:59,248 INFO L435 NwaCegarLoop]: 1203 mSDtfsCounter, 1877 mSDsluCounter, 9960 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1915 SdHoareTripleChecker+Valid, 11163 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-12 11:56:59,248 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1915 Valid, 11163 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-12 11:56:59,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2024-11-12 11:56:59,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 2242. [2024-11-12 11:56:59,293 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 11:56:59,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2242 states to 2242 states and 3104 transitions. [2024-11-12 11:56:59,296 INFO L78 Accepts]: Start accepts. Automaton has 2242 states and 3104 transitions. Word has length 333 [2024-11-12 11:56:59,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:56:59,297 INFO L471 AbstractCegarLoop]: Abstraction has 2242 states and 3104 transitions. [2024-11-12 11:56:59,297 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 11:56:59,297 INFO L276 IsEmpty]: Start isEmpty. Operand 2242 states and 3104 transitions. [2024-11-12 11:56:59,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2024-11-12 11:56:59,310 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:56:59,310 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 11:56:59,331 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 11:56:59,510 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 11:56:59,518 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:56:59,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:56:59,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1527784517, now seen corresponding path program 1 times [2024-11-12 11:56:59,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:56:59,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288602214] [2024-11-12 11:56:59,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:56:59,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:57:00,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:57:05,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 11:57:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:57:05,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 11:57:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:57:05,137 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-12 11:57:05,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:57:05,143 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-12 11:57:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:57:05,151 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 11:57:05,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:57:05,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288602214] [2024-11-12 11:57:05,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288602214] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:57:05,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845422008] [2024-11-12 11:57:05,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:57:05,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:57:05,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:57:05,155 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 11:57:05,157 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 11:57:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:57:06,372 INFO L256 TraceCheckSpWp]: Trace formula consists of 3764 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-12 11:57:06,385 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:57:06,391 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 11:57:06,678 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 11:57:06,840 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 11:57:07,008 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 11:57:07,160 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 11:57:07,168 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 11:57:07,287 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 11:57:07,288 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 11:57:08,161 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 11:57:08,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845422008] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 11:57:08,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 11:57:08,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 8] total 22 [2024-11-12 11:57:08,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391781049] [2024-11-12 11:57:08,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 11:57:08,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-12 11:57:08,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:57:08,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-12 11:57:08,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2024-11-12 11:57:08,167 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 11:57:09,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:57:09,388 INFO L93 Difference]: Finished difference Result 5644 states and 7814 transitions. [2024-11-12 11:57:09,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-12 11:57:09,390 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 11:57:09,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:57:09,404 INFO L225 Difference]: With dead ends: 5644 [2024-11-12 11:57:09,404 INFO L226 Difference]: Without dead ends: 4297 [2024-11-12 11:57:09,408 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1587 GetRequests, 1549 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 11:57:09,409 INFO L435 NwaCegarLoop]: 1203 mSDtfsCounter, 4965 mSDsluCounter, 12718 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5051 SdHoareTripleChecker+Valid, 13921 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-12 11:57:09,409 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5051 Valid, 13921 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-12 11:57:09,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4297 states. [2024-11-12 11:57:09,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4297 to 4000. [2024-11-12 11:57:09,527 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 11:57:09,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4000 states to 4000 states and 5450 transitions. [2024-11-12 11:57:09,538 INFO L78 Accepts]: Start accepts. Automaton has 4000 states and 5450 transitions. Word has length 777 [2024-11-12 11:57:09,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:57:09,539 INFO L471 AbstractCegarLoop]: Abstraction has 4000 states and 5450 transitions. [2024-11-12 11:57:09,540 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 11:57:09,541 INFO L276 IsEmpty]: Start isEmpty. Operand 4000 states and 5450 transitions. [2024-11-12 11:57:09,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1666 [2024-11-12 11:57:09,570 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:57:09,571 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 11:57:09,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-12 11:57:09,775 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 11:57:09,776 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:57:09,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:57:09,777 INFO L85 PathProgramCache]: Analyzing trace with hash -673087783, now seen corresponding path program 2 times [2024-11-12 11:57:09,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:57:09,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181919240] [2024-11-12 11:57:09,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:57:09,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:57:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:57:16,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 11:57:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:57:16,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 11:57:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:57:16,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-12 11:57:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:57:16,718 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-12 11:57:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:57:16,723 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 11:57:16,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:57:16,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181919240] [2024-11-12 11:57:16,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181919240] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:57:16,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967293014] [2024-11-12 11:57:16,724 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-12 11:57:16,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:57:16,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:57:16,725 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 11:57:16,727 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 11:57:17,823 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-12 11:57:17,824 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-12 11:57:17,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-12 11:57:17,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:57:17,875 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 11:57:18,581 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 11:57:18,581 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 11:57:18,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967293014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:57:18,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 11:57:18,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2024-11-12 11:57:18,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222100391] [2024-11-12 11:57:18,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:57:18,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 11:57:18,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:57:18,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 11:57:18,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-12 11:57:18,584 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 11:57:19,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:57:19,249 INFO L93 Difference]: Finished difference Result 4862 states and 6729 transitions. [2024-11-12 11:57:19,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 11:57:19,250 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 11:57:19,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:57:19,268 INFO L225 Difference]: With dead ends: 4862 [2024-11-12 11:57:19,268 INFO L226 Difference]: Without dead ends: 4006 [2024-11-12 11:57:19,270 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1689 GetRequests, 1666 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2024-11-12 11:57:19,271 INFO L435 NwaCegarLoop]: 1236 mSDtfsCounter, 393 mSDsluCounter, 5433 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 6669 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-12 11:57:19,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 6669 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-12 11:57:19,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4006 states. [2024-11-12 11:57:19,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4006 to 4003. [2024-11-12 11:57:19,335 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 11:57:19,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4003 states to 4003 states and 5453 transitions. [2024-11-12 11:57:19,340 INFO L78 Accepts]: Start accepts. Automaton has 4003 states and 5453 transitions. Word has length 1665 [2024-11-12 11:57:19,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:57:19,342 INFO L471 AbstractCegarLoop]: Abstraction has 4003 states and 5453 transitions. [2024-11-12 11:57:19,342 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 11:57:19,342 INFO L276 IsEmpty]: Start isEmpty. Operand 4003 states and 5453 transitions. [2024-11-12 11:57:19,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1666 [2024-11-12 11:57:19,356 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:57:19,357 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 11:57:19,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 11:57:19,561 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 11:57:19,562 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:57:19,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:57:19,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1095614255, now seen corresponding path program 1 times [2024-11-12 11:57:19,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:57:19,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987103367] [2024-11-12 11:57:19,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:57:19,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:57:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:57:21,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 11:57:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:57:21,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 11:57:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:57:21,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-12 11:57:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:57:21,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-12 11:57:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:57:21,801 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 11:57:21,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:57:21,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987103367] [2024-11-12 11:57:21,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987103367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 11:57:21,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 11:57:21,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-12 11:57:21,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734665041] [2024-11-12 11:57:21,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 11:57:21,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 11:57:21,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:57:21,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 11:57:21,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-12 11:57:21,807 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 11:57:22,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:57:22,169 INFO L93 Difference]: Finished difference Result 4871 states and 6782 transitions. [2024-11-12 11:57:22,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 11:57:22,170 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 11:57:22,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:57:22,179 INFO L225 Difference]: With dead ends: 4871 [2024-11-12 11:57:22,179 INFO L226 Difference]: Without dead ends: 4003 [2024-11-12 11:57:22,181 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 11:57:22,182 INFO L435 NwaCegarLoop]: 1214 mSDtfsCounter, 32 mSDsluCounter, 3490 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 11:57:22,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 4704 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 11:57:22,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4003 states. [2024-11-12 11:57:22,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4003 to 3994. [2024-11-12 11:57:22,276 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 11:57:22,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3994 states to 3994 states and 5442 transitions. [2024-11-12 11:57:22,283 INFO L78 Accepts]: Start accepts. Automaton has 3994 states and 5442 transitions. Word has length 1665 [2024-11-12 11:57:22,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:57:22,285 INFO L471 AbstractCegarLoop]: Abstraction has 3994 states and 5442 transitions. [2024-11-12 11:57:22,285 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 11:57:22,285 INFO L276 IsEmpty]: Start isEmpty. Operand 3994 states and 5442 transitions. [2024-11-12 11:57:22,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1667 [2024-11-12 11:57:22,396 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:57:22,397 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 11:57:22,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-12 11:57:22,397 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:57:22,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:57:22,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1888804143, now seen corresponding path program 1 times [2024-11-12 11:57:22,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:57:22,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228096030] [2024-11-12 11:57:22,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:57:22,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:57:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:57:29,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 11:57:29,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:57:29,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 11:57:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:57:29,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-12 11:57:29,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:57:29,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-12 11:57:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:57:29,213 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 11:57:29,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 11:57:29,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228096030] [2024-11-12 11:57:29,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228096030] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 11:57:29,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301552499] [2024-11-12 11:57:29,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:57:29,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 11:57:29,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 11:57:29,216 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 11:57:29,224 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 11:57:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 11:57:32,242 INFO L256 TraceCheckSpWp]: Trace formula consists of 8007 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-12 11:57:32,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 11:57:32,293 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 11:57:32,662 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 11:57:32,867 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 11:57:33,079 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 11:57:33,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-12 11:57:33,494 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 11:57:33,654 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 11:57:33,806 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 11:57:33,966 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 11:57:34,135 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 11:57:34,303 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 11:57:34,390 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 11:57:34,394 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 11:57:34,403 INFO L134 CoverageAnalysis]: Checked inductivity of 7438 backedges. 0 proven. 7414 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-12 11:57:34,404 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-12 11:57:36,029 INFO L134 CoverageAnalysis]: Checked inductivity of 7438 backedges. 0 proven. 7414 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-12 11:57:36,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301552499] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-12 11:57:36,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-12 11:57:36,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16, 15] total 33 [2024-11-12 11:57:36,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101037346] [2024-11-12 11:57:36,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-12 11:57:36,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-12 11:57:36,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 11:57:36,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-12 11:57:36,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=698, Unknown=0, NotChecked=0, Total=1056 [2024-11-12 11:57:36,040 INFO L87 Difference]: Start difference. First operand 3994 states and 5442 transitions. Second operand has 33 states, 33 states have (on average 102.78787878787878) internal successors, (3392), 32 states have internal predecessors, (3392), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-12 11:57:38,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 11:57:38,733 INFO L93 Difference]: Finished difference Result 6894 states and 9505 transitions. [2024-11-12 11:57:38,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-11-12 11:57:38,735 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 102.78787878787878) internal successors, (3392), 32 states have internal predecessors, (3392), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 1666 [2024-11-12 11:57:38,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 11:57:38,748 INFO L225 Difference]: With dead ends: 6894 [2024-11-12 11:57:38,748 INFO L226 Difference]: Without dead ends: 6005 [2024-11-12 11:57:38,752 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3398 GetRequests, 3312 SyntacticMatches, 7 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2054 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1677, Invalid=4803, Unknown=0, NotChecked=0, Total=6480 [2024-11-12 11:57:38,752 INFO L435 NwaCegarLoop]: 1168 mSDtfsCounter, 14063 mSDsluCounter, 14809 mSDsCounter, 0 mSdLazyCounter, 1213 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14226 SdHoareTripleChecker+Valid, 15977 SdHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-12 11:57:38,753 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14226 Valid, 15977 Invalid, 1357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1213 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-12 11:57:38,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6005 states. [2024-11-12 11:57:38,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6005 to 5996. [2024-11-12 11:57:38,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5996 states, 5890 states have (on average 1.3410865874363327) internal successors, (7899), 5899 states have internal predecessors, (7899), 98 states have call successors, (98), 7 states have call predecessors, (98), 7 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) [2024-11-12 11:57:38,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5996 states to 5996 states and 8094 transitions. [2024-11-12 11:57:38,910 INFO L78 Accepts]: Start accepts. Automaton has 5996 states and 8094 transitions. Word has length 1666 [2024-11-12 11:57:38,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 11:57:38,912 INFO L471 AbstractCegarLoop]: Abstraction has 5996 states and 8094 transitions. [2024-11-12 11:57:38,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 102.78787878787878) internal successors, (3392), 32 states have internal predecessors, (3392), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-12 11:57:38,913 INFO L276 IsEmpty]: Start isEmpty. Operand 5996 states and 8094 transitions. [2024-11-12 11:57:38,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2668 [2024-11-12 11:57:38,980 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 11:57:38,980 INFO L218 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 23, 14, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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 11:57:39,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-12 11:57:39,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-12 11:57:39,185 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 11:57:39,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 11:57:39,187 INFO L85 PathProgramCache]: Analyzing trace with hash 795274672, now seen corresponding path program 2 times [2024-11-12 11:57:39,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 11:57:39,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046881017] [2024-11-12 11:57:39,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 11:57:39,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 11:57:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat