./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c2bb9f0c15e3c3296f863c26b4377b27546cf1c417a60e9663a6ff48eb617ef8 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 16:40:16,728 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 16:40:16,796 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 16:40:16,809 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 16:40:16,809 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 16:40:16,831 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 16:40:16,831 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 16:40:16,832 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 16:40:16,832 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 16:40:16,833 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 16:40:16,834 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 16:40:16,834 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 16:40:16,835 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 16:40:16,837 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 16:40:16,837 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 16:40:16,837 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 16:40:16,837 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 16:40:16,838 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 16:40:16,838 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 16:40:16,838 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 16:40:16,838 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 16:40:16,839 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 16:40:16,839 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 16:40:16,840 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 16:40:16,840 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 16:40:16,840 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 16:40:16,840 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 16:40:16,840 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 16:40:16,841 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 16:40:16,841 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 16:40:16,841 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 16:40:16,841 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 16:40:16,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 16:40:16,842 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 16:40:16,842 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 16:40:16,842 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 16:40:16,842 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 16:40:16,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 16:40:16,843 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 16:40:16,843 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 16:40:16,843 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 16:40:16,844 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 16:40:16,844 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2bb9f0c15e3c3296f863c26b4377b27546cf1c417a60e9663a6ff48eb617ef8 [2024-10-14 16:40:17,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 16:40:17,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 16:40:17,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 16:40:17,061 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 16:40:17,061 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 16:40:17,062 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i [2024-10-14 16:40:18,348 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 16:40:18,544 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 16:40:18,544 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i [2024-10-14 16:40:18,556 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c427284c6/34d8e7f5c1384040b2a1033ed4b91453/FLAG9fe8ce19f [2024-10-14 16:40:18,900 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c427284c6/34d8e7f5c1384040b2a1033ed4b91453 [2024-10-14 16:40:18,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 16:40:18,903 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 16:40:18,904 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 16:40:18,904 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 16:40:18,908 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 16:40:18,909 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:40:18" (1/1) ... [2024-10-14 16:40:18,910 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4389dcc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:18, skipping insertion in model container [2024-10-14 16:40:18,910 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:40:18" (1/1) ... [2024-10-14 16:40:18,955 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 16:40:19,241 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[33021,33034] [2024-10-14 16:40:19,352 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[44124,44137] [2024-10-14 16:40:19,357 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[44245,44258] [2024-10-14 16:40:19,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 16:40:19,373 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 16:40:19,402 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[33021,33034] [2024-10-14 16:40:19,458 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[44124,44137] [2024-10-14 16:40:19,458 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-1.i[44245,44258] [2024-10-14 16:40:19,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 16:40:19,495 INFO L204 MainTranslator]: Completed translation [2024-10-14 16:40:19,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:19 WrapperNode [2024-10-14 16:40:19,495 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 16:40:19,496 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 16:40:19,496 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 16:40:19,497 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 16:40:19,502 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:19" (1/1) ... [2024-10-14 16:40:19,526 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:19" (1/1) ... [2024-10-14 16:40:19,600 INFO L138 Inliner]: procedures = 176, calls = 269, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1423 [2024-10-14 16:40:19,601 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 16:40:19,601 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 16:40:19,601 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 16:40:19,601 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 16:40:19,615 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:19" (1/1) ... [2024-10-14 16:40:19,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:19" (1/1) ... [2024-10-14 16:40:19,622 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:19" (1/1) ... [2024-10-14 16:40:19,689 INFO L175 MemorySlicer]: Split 253 memory accesses to 3 slices as follows [2, 217, 34]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 50, 4]. [2024-10-14 16:40:19,690 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:19" (1/1) ... [2024-10-14 16:40:19,690 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:19" (1/1) ... [2024-10-14 16:40:19,714 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:19" (1/1) ... [2024-10-14 16:40:19,733 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:19" (1/1) ... [2024-10-14 16:40:19,741 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:19" (1/1) ... [2024-10-14 16:40:19,747 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:19" (1/1) ... [2024-10-14 16:40:19,755 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 16:40:19,759 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 16:40:19,760 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 16:40:19,760 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 16:40:19,760 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:19" (1/1) ... [2024-10-14 16:40:19,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 16:40:19,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:40:19,790 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 16:40:19,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 16:40:19,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 16:40:19,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 16:40:19,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-14 16:40:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 16:40:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 16:40:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-14 16:40:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-14 16:40:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-14 16:40:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-10-14 16:40:19,831 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-14 16:40:19,831 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-14 16:40:19,832 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-10-14 16:40:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-14 16:40:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 16:40:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-14 16:40:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-14 16:40:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-14 16:40:19,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 16:40:19,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-14 16:40:19,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-14 16:40:19,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-14 16:40:19,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 16:40:19,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 16:40:19,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 16:40:19,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 16:40:19,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 16:40:19,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 16:40:20,003 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 16:40:20,004 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 16:40:21,100 INFO L? ?]: Removed 309 outVars from TransFormulas that were not future-live. [2024-10-14 16:40:21,100 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 16:40:21,137 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 16:40:21,137 INFO L314 CfgBuilder]: Removed 63 assume(true) statements. [2024-10-14 16:40:21,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:40:21 BoogieIcfgContainer [2024-10-14 16:40:21,138 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 16:40:21,139 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 16:40:21,140 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 16:40:21,142 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 16:40:21,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:40:18" (1/3) ... [2024-10-14 16:40:21,143 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b653a37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:40:21, skipping insertion in model container [2024-10-14 16:40:21,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:40:19" (2/3) ... [2024-10-14 16:40:21,143 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b653a37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:40:21, skipping insertion in model container [2024-10-14 16:40:21,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:40:21" (3/3) ... [2024-10-14 16:40:21,145 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test7-1.i [2024-10-14 16:40:21,157 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 16:40:21,157 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-14 16:40:21,225 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 16:40:21,230 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;@73351e78, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 16:40:21,230 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-14 16:40:21,234 INFO L276 IsEmpty]: Start isEmpty. Operand has 391 states, 384 states have (on average 1.6328125) internal successors, (627), 386 states have internal predecessors, (627), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-14 16:40:21,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-14 16:40:21,239 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:40:21,239 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:40:21,239 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:40:21,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:40:21,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1356440670, now seen corresponding path program 1 times [2024-10-14 16:40:21,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:40:21,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891287465] [2024-10-14 16:40:21,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:40:21,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:40:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:40:21,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:40:21,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:40:21,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891287465] [2024-10-14 16:40:21,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891287465] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:40:21,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:40:21,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 16:40:21,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813918556] [2024-10-14 16:40:21,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:40:21,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 16:40:21,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:40:21,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 16:40:21,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 16:40:21,421 INFO L87 Difference]: Start difference. First operand has 391 states, 384 states have (on average 1.6328125) internal successors, (627), 386 states have internal predecessors, (627), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:40:21,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:40:21,492 INFO L93 Difference]: Finished difference Result 781 states and 1265 transitions. [2024-10-14 16:40:21,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 16:40:21,494 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-14 16:40:21,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:40:21,502 INFO L225 Difference]: With dead ends: 781 [2024-10-14 16:40:21,503 INFO L226 Difference]: Without dead ends: 389 [2024-10-14 16:40:21,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 16:40:21,508 INFO L432 NwaCegarLoop]: 561 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 16:40:21,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 561 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 16:40:21,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2024-10-14 16:40:21,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2024-10-14 16:40:21,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 383 states have (on average 1.4516971279373367) internal successors, (556), 384 states have internal predecessors, (556), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-14 16:40:21,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 562 transitions. [2024-10-14 16:40:21,552 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 562 transitions. Word has length 7 [2024-10-14 16:40:21,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:40:21,552 INFO L471 AbstractCegarLoop]: Abstraction has 389 states and 562 transitions. [2024-10-14 16:40:21,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:40:21,552 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 562 transitions. [2024-10-14 16:40:21,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-14 16:40:21,553 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:40:21,553 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:40:21,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 16:40:21,553 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:40:21,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:40:21,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1301144548, now seen corresponding path program 1 times [2024-10-14 16:40:21,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:40:21,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582550867] [2024-10-14 16:40:21,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:40:21,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:40:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:40:21,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:40:21,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:40:21,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582550867] [2024-10-14 16:40:21,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582550867] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:40:21,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:40:21,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 16:40:21,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203458575] [2024-10-14 16:40:21,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:40:21,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 16:40:21,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:40:21,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 16:40:21,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 16:40:21,720 INFO L87 Difference]: Start difference. First operand 389 states and 562 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:40:21,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:40:21,865 INFO L93 Difference]: Finished difference Result 963 states and 1394 transitions. [2024-10-14 16:40:21,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 16:40:21,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-14 16:40:21,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:40:21,870 INFO L225 Difference]: With dead ends: 963 [2024-10-14 16:40:21,870 INFO L226 Difference]: Without dead ends: 773 [2024-10-14 16:40:21,871 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 16:40:21,873 INFO L432 NwaCegarLoop]: 584 mSDtfsCounter, 548 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 16:40:21,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 1705 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 16:40:21,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2024-10-14 16:40:21,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 391. [2024-10-14 16:40:21,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 385 states have (on average 1.4493506493506494) internal successors, (558), 386 states have internal predecessors, (558), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-14 16:40:21,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 564 transitions. [2024-10-14 16:40:21,905 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 564 transitions. Word has length 9 [2024-10-14 16:40:21,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:40:21,906 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 564 transitions. [2024-10-14 16:40:21,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:40:21,906 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 564 transitions. [2024-10-14 16:40:21,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-14 16:40:21,909 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:40:21,909 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:40:21,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 16:40:21,910 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:40:21,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:40:21,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1454214717, now seen corresponding path program 1 times [2024-10-14 16:40:21,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:40:21,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041394647] [2024-10-14 16:40:21,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:40:21,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:40:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:40:22,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:40:22,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:40:22,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041394647] [2024-10-14 16:40:22,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041394647] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:40:22,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:40:22,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 16:40:22,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092857011] [2024-10-14 16:40:22,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:40:22,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 16:40:22,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:40:22,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 16:40:22,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 16:40:22,217 INFO L87 Difference]: Start difference. First operand 391 states and 564 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:40:22,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:40:22,287 INFO L93 Difference]: Finished difference Result 737 states and 1059 transitions. [2024-10-14 16:40:22,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 16:40:22,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-10-14 16:40:22,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:40:22,289 INFO L225 Difference]: With dead ends: 737 [2024-10-14 16:40:22,289 INFO L226 Difference]: Without dead ends: 349 [2024-10-14 16:40:22,289 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 16:40:22,290 INFO L432 NwaCegarLoop]: 458 mSDtfsCounter, 30 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 16:40:22,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1357 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 16:40:22,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2024-10-14 16:40:22,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2024-10-14 16:40:22,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 343 states have (on average 1.402332361516035) internal successors, (481), 344 states have internal predecessors, (481), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-14 16:40:22,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 487 transitions. [2024-10-14 16:40:22,298 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 487 transitions. Word has length 85 [2024-10-14 16:40:22,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:40:22,298 INFO L471 AbstractCegarLoop]: Abstraction has 349 states and 487 transitions. [2024-10-14 16:40:22,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:40:22,298 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 487 transitions. [2024-10-14 16:40:22,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-14 16:40:22,301 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:40:22,302 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:40:22,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 16:40:22,302 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:40:22,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:40:22,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1209933513, now seen corresponding path program 1 times [2024-10-14 16:40:22,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:40:22,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91146364] [2024-10-14 16:40:22,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:40:22,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:40:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:40:22,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 16:40:22,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:40:22,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91146364] [2024-10-14 16:40:22,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91146364] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:40:22,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:40:22,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 16:40:22,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878001159] [2024-10-14 16:40:22,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:40:22,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 16:40:22,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:40:22,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 16:40:22,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 16:40:22,459 INFO L87 Difference]: Start difference. First operand 349 states and 487 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:40:22,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:40:22,552 INFO L93 Difference]: Finished difference Result 946 states and 1332 transitions. [2024-10-14 16:40:22,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 16:40:22,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-10-14 16:40:22,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:40:22,555 INFO L225 Difference]: With dead ends: 946 [2024-10-14 16:40:22,555 INFO L226 Difference]: Without dead ends: 600 [2024-10-14 16:40:22,556 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 16:40:22,556 INFO L432 NwaCegarLoop]: 663 mSDtfsCounter, 295 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 16:40:22,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 1117 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 16:40:22,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2024-10-14 16:40:22,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 596. [2024-10-14 16:40:22,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 590 states have (on average 1.4186440677966101) internal successors, (837), 591 states have internal predecessors, (837), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-14 16:40:22,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 843 transitions. [2024-10-14 16:40:22,567 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 843 transitions. Word has length 85 [2024-10-14 16:40:22,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:40:22,567 INFO L471 AbstractCegarLoop]: Abstraction has 596 states and 843 transitions. [2024-10-14 16:40:22,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 16:40:22,567 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 843 transitions. [2024-10-14 16:40:22,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-14 16:40:22,569 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:40:22,569 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:40:22,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 16:40:22,570 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:40:22,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:40:22,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1855407225, now seen corresponding path program 1 times [2024-10-14 16:40:22,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:40:22,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953176534] [2024-10-14 16:40:22,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:40:22,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:40:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:40:22,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-14 16:40:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:40:22,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-14 16:40:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:40:22,871 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 16:40:22,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:40:22,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953176534] [2024-10-14 16:40:22,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953176534] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:40:22,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:40:22,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 16:40:22,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499229346] [2024-10-14 16:40:22,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:40:22,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 16:40:22,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:40:22,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 16:40:22,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 16:40:22,878 INFO L87 Difference]: Start difference. First operand 596 states and 843 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:40:23,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:40:23,166 INFO L93 Difference]: Finished difference Result 880 states and 1249 transitions. [2024-10-14 16:40:23,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 16:40:23,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 98 [2024-10-14 16:40:23,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:40:23,170 INFO L225 Difference]: With dead ends: 880 [2024-10-14 16:40:23,171 INFO L226 Difference]: Without dead ends: 876 [2024-10-14 16:40:23,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 16:40:23,172 INFO L432 NwaCegarLoop]: 500 mSDtfsCounter, 460 mSDsluCounter, 1365 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 16:40:23,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 1865 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 16:40:23,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2024-10-14 16:40:23,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 598. [2024-10-14 16:40:23,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 592 states have (on average 1.4172297297297298) internal successors, (839), 593 states have internal predecessors, (839), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-14 16:40:23,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 845 transitions. [2024-10-14 16:40:23,183 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 845 transitions. Word has length 98 [2024-10-14 16:40:23,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:40:23,184 INFO L471 AbstractCegarLoop]: Abstraction has 598 states and 845 transitions. [2024-10-14 16:40:23,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:40:23,184 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 845 transitions. [2024-10-14 16:40:23,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-10-14 16:40:23,187 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:40:23,187 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:40:23,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 16:40:23,187 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:40:23,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:40:23,188 INFO L85 PathProgramCache]: Analyzing trace with hash -803185094, now seen corresponding path program 1 times [2024-10-14 16:40:23,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:40:23,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928642509] [2024-10-14 16:40:23,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:40:23,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:40:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:40:23,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-14 16:40:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:40:23,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-14 16:40:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:40:23,404 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 16:40:23,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:40:23,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928642509] [2024-10-14 16:40:23,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928642509] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:40:23,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:40:23,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 16:40:23,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679929592] [2024-10-14 16:40:23,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:40:23,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 16:40:23,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:40:23,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 16:40:23,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 16:40:23,407 INFO L87 Difference]: Start difference. First operand 598 states and 845 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:40:23,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:40:23,650 INFO L93 Difference]: Finished difference Result 865 states and 1230 transitions. [2024-10-14 16:40:23,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 16:40:23,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 152 [2024-10-14 16:40:23,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:40:23,653 INFO L225 Difference]: With dead ends: 865 [2024-10-14 16:40:23,653 INFO L226 Difference]: Without dead ends: 516 [2024-10-14 16:40:23,654 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 16:40:23,654 INFO L432 NwaCegarLoop]: 374 mSDtfsCounter, 32 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1408 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-14 16:40:23,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 1408 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-14 16:40:23,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2024-10-14 16:40:23,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 514. [2024-10-14 16:40:23,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 508 states have (on average 1.3484251968503937) internal successors, (685), 509 states have internal predecessors, (685), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-14 16:40:23,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 691 transitions. [2024-10-14 16:40:23,667 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 691 transitions. Word has length 152 [2024-10-14 16:40:23,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:40:23,667 INFO L471 AbstractCegarLoop]: Abstraction has 514 states and 691 transitions. [2024-10-14 16:40:23,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:40:23,667 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 691 transitions. [2024-10-14 16:40:23,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-10-14 16:40:23,669 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:40:23,669 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:40:23,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 16:40:23,670 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:40:23,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:40:23,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1974699218, now seen corresponding path program 1 times [2024-10-14 16:40:23,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:40:23,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290134286] [2024-10-14 16:40:23,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:40:23,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:40:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:40:23,906 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-14 16:40:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:40:23,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-14 16:40:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:40:23,914 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:40:23,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:40:23,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290134286] [2024-10-14 16:40:23,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290134286] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:40:23,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 16:40:23,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 16:40:23,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787749283] [2024-10-14 16:40:23,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:40:23,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 16:40:23,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:40:23,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 16:40:23,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 16:40:23,916 INFO L87 Difference]: Start difference. First operand 514 states and 691 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:40:24,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:40:24,345 INFO L93 Difference]: Finished difference Result 1287 states and 1734 transitions. [2024-10-14 16:40:24,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 16:40:24,345 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 152 [2024-10-14 16:40:24,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:40:24,348 INFO L225 Difference]: With dead ends: 1287 [2024-10-14 16:40:24,348 INFO L226 Difference]: Without dead ends: 863 [2024-10-14 16:40:24,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-14 16:40:24,352 INFO L432 NwaCegarLoop]: 463 mSDtfsCounter, 1155 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1157 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 16:40:24,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1157 Valid, 1781 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 16:40:24,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2024-10-14 16:40:24,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 653. [2024-10-14 16:40:24,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 647 states have (on average 1.3508500772797527) internal successors, (874), 648 states have internal predecessors, (874), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-14 16:40:24,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 880 transitions. [2024-10-14 16:40:24,382 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 880 transitions. Word has length 152 [2024-10-14 16:40:24,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:40:24,382 INFO L471 AbstractCegarLoop]: Abstraction has 653 states and 880 transitions. [2024-10-14 16:40:24,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:40:24,383 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 880 transitions. [2024-10-14 16:40:24,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-10-14 16:40:24,388 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:40:24,388 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 16:40:24,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 16:40:24,388 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:40:24,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:40:24,388 INFO L85 PathProgramCache]: Analyzing trace with hash 443991906, now seen corresponding path program 1 times [2024-10-14 16:40:24,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:40:24,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592812439] [2024-10-14 16:40:24,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:40:24,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:40:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:40:25,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-14 16:40:25,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:40:25,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-14 16:40:25,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:40:25,073 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:40:25,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:40:25,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592812439] [2024-10-14 16:40:25,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592812439] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:40:25,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132738637] [2024-10-14 16:40:25,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:40:25,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:40:25,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:40:25,076 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:40:25,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 16:40:25,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:40:25,345 INFO L255 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-14 16:40:25,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:40:25,385 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 [2024-10-14 16:40:25,555 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 [2024-10-14 16:40:25,565 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 [2024-10-14 16:40:25,569 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:40:25,569 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 16:40:25,731 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:40:25,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132738637] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 16:40:25,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 16:40:25,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 12 [2024-10-14 16:40:25,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077443341] [2024-10-14 16:40:25,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 16:40:25,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 16:40:25,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:40:25,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 16:40:25,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-10-14 16:40:25,733 INFO L87 Difference]: Start difference. First operand 653 states and 880 transitions. Second operand has 12 states, 12 states have (on average 20.5) internal successors, (246), 11 states have internal predecessors, (246), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-14 16:40:26,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:40:26,177 INFO L93 Difference]: Finished difference Result 2930 states and 3963 transitions. [2024-10-14 16:40:26,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 16:40:26,178 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 20.5) internal successors, (246), 11 states have internal predecessors, (246), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 162 [2024-10-14 16:40:26,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:40:26,185 INFO L225 Difference]: With dead ends: 2930 [2024-10-14 16:40:26,185 INFO L226 Difference]: Without dead ends: 2523 [2024-10-14 16:40:26,186 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 320 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-10-14 16:40:26,188 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 2025 mSDsluCounter, 3057 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2037 SdHoareTripleChecker+Valid, 3479 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 16:40:26,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2037 Valid, 3479 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 16:40:26,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2523 states. [2024-10-14 16:40:26,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2523 to 999. [2024-10-14 16:40:26,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 989 states have (on average 1.3447927199191103) internal successors, (1330), 990 states have internal predecessors, (1330), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-14 16:40:26,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1342 transitions. [2024-10-14 16:40:26,231 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1342 transitions. Word has length 162 [2024-10-14 16:40:26,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:40:26,232 INFO L471 AbstractCegarLoop]: Abstraction has 999 states and 1342 transitions. [2024-10-14 16:40:26,232 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.5) internal successors, (246), 11 states have internal predecessors, (246), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-14 16:40:26,232 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1342 transitions. [2024-10-14 16:40:26,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2024-10-14 16:40:26,235 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:40:26,235 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2024-10-14 16:40:26,253 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 16:40:26,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:40:26,438 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:40:26,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:40:26,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1130981993, now seen corresponding path program 1 times [2024-10-14 16:40:26,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:40:26,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689999795] [2024-10-14 16:40:26,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:40:26,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:40:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:40:28,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-14 16:40:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:40:28,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-14 16:40:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:40:28,915 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:40:28,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:40:28,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689999795] [2024-10-14 16:40:28,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689999795] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:40:28,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747611129] [2024-10-14 16:40:28,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:40:28,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:40:28,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:40:28,918 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:40:28,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 16:40:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:40:29,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 1896 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-14 16:40:29,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:40:29,474 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 [2024-10-14 16:40:29,619 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 [2024-10-14 16:40:29,711 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 [2024-10-14 16:40:29,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-10-14 16:40:29,876 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 [2024-10-14 16:40:29,883 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 [2024-10-14 16:40:29,887 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:40:29,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 16:40:30,301 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:40:30,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747611129] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 16:40:30,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 16:40:30,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 20 [2024-10-14 16:40:30,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386464989] [2024-10-14 16:40:30,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 16:40:30,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-14 16:40:30,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:40:30,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-14 16:40:30,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2024-10-14 16:40:30,305 INFO L87 Difference]: Start difference. First operand 999 states and 1342 transitions. Second operand has 20 states, 20 states have (on average 35.3) internal successors, (706), 19 states have internal predecessors, (706), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-14 16:40:31,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:40:31,025 INFO L93 Difference]: Finished difference Result 6218 states and 8418 transitions. [2024-10-14 16:40:31,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-14 16:40:31,025 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 35.3) internal successors, (706), 19 states have internal predecessors, (706), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 390 [2024-10-14 16:40:31,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:40:31,040 INFO L225 Difference]: With dead ends: 6218 [2024-10-14 16:40:31,041 INFO L226 Difference]: Without dead ends: 5811 [2024-10-14 16:40:31,042 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 802 GetRequests, 773 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=230, Invalid=526, Unknown=0, NotChecked=0, Total=756 [2024-10-14 16:40:31,043 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 6347 mSDsluCounter, 5657 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6371 SdHoareTripleChecker+Valid, 6079 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 16:40:31,043 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6371 Valid, 6079 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 16:40:31,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5811 states. [2024-10-14 16:40:31,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5811 to 1863. [2024-10-14 16:40:31,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1847 states have (on average 1.3405522468868436) internal successors, (2476), 1848 states have internal predecessors, (2476), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-14 16:40:31,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 2500 transitions. [2024-10-14 16:40:31,101 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 2500 transitions. Word has length 390 [2024-10-14 16:40:31,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:40:31,102 INFO L471 AbstractCegarLoop]: Abstraction has 1863 states and 2500 transitions. [2024-10-14 16:40:31,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 35.3) internal successors, (706), 19 states have internal predecessors, (706), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-14 16:40:31,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 2500 transitions. [2024-10-14 16:40:31,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 847 [2024-10-14 16:40:31,113 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:40:31,113 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 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] [2024-10-14 16:40:31,131 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-14 16:40:31,314 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,SelfDestructingSolverStorable8 [2024-10-14 16:40:31,314 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:40:31,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:40:31,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1434636791, now seen corresponding path program 2 times [2024-10-14 16:40:31,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:40:31,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206030956] [2024-10-14 16:40:31,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:40:31,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:40:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:40:39,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-14 16:40:39,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:40:39,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-14 16:40:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:40:39,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3425 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:40:39,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:40:39,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206030956] [2024-10-14 16:40:39,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206030956] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:40:39,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644014250] [2024-10-14 16:40:39,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 16:40:39,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:40:39,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:40:39,491 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:40:39,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 16:40:40,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 16:40:40,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 16:40:40,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-14 16:40:40,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:40:40,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-14 16:40:40,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3425 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3425 trivial. 0 not checked. [2024-10-14 16:40:40,555 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 16:40:40,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644014250] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 16:40:40,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-14 16:40:40,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19] total 27 [2024-10-14 16:40:40,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463392382] [2024-10-14 16:40:40,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 16:40:40,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-14 16:40:40,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:40:40,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-14 16:40:40,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=531, Unknown=0, NotChecked=0, Total=702 [2024-10-14 16:40:40,557 INFO L87 Difference]: Start difference. First operand 1863 states and 2500 transitions. Second operand has 10 states, 10 states have (on average 15.8) internal successors, (158), 10 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:40:41,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:40:41,154 INFO L93 Difference]: Finished difference Result 2447 states and 3283 transitions. [2024-10-14 16:40:41,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 16:40:41,154 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.8) internal successors, (158), 10 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 846 [2024-10-14 16:40:41,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:40:41,161 INFO L225 Difference]: With dead ends: 2447 [2024-10-14 16:40:41,161 INFO L226 Difference]: Without dead ends: 2043 [2024-10-14 16:40:41,162 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 875 GetRequests, 843 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=296, Invalid=826, Unknown=0, NotChecked=0, Total=1122 [2024-10-14 16:40:41,162 INFO L432 NwaCegarLoop]: 436 mSDtfsCounter, 395 mSDsluCounter, 1826 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 2262 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-14 16:40:41,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 2262 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-14 16:40:41,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2024-10-14 16:40:41,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 1898. [2024-10-14 16:40:41,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1898 states, 1882 states have (on average 1.3363443145589797) internal successors, (2515), 1883 states have internal predecessors, (2515), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-14 16:40:41,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1898 states to 1898 states and 2539 transitions. [2024-10-14 16:40:41,207 INFO L78 Accepts]: Start accepts. Automaton has 1898 states and 2539 transitions. Word has length 846 [2024-10-14 16:40:41,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:40:41,207 INFO L471 AbstractCegarLoop]: Abstraction has 1898 states and 2539 transitions. [2024-10-14 16:40:41,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.8) internal successors, (158), 10 states have internal predecessors, (158), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 16:40:41,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1898 states and 2539 transitions. [2024-10-14 16:40:41,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 848 [2024-10-14 16:40:41,224 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:40:41,225 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 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] [2024-10-14 16:40:41,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 16:40:41,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:40:41,429 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:40:41,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:40:41,430 INFO L85 PathProgramCache]: Analyzing trace with hash 417008794, now seen corresponding path program 1 times [2024-10-14 16:40:41,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:40:41,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342819095] [2024-10-14 16:40:41,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:40:41,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:40:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:40:49,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-14 16:40:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:40:49,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-14 16:40:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:40:49,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3425 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:40:49,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:40:49,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342819095] [2024-10-14 16:40:49,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342819095] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:40:49,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918151987] [2024-10-14 16:40:49,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:40:49,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:40:49,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:40:49,643 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:40:49,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 16:40:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:40:50,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 4159 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-10-14 16:40:50,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 16:40:50,777 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 [2024-10-14 16:40:50,921 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 [2024-10-14 16:40:51,011 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 [2024-10-14 16:40:51,101 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 [2024-10-14 16:40:51,201 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 [2024-10-14 16:40:51,297 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 [2024-10-14 16:40:51,387 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 [2024-10-14 16:40:51,477 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 [2024-10-14 16:40:51,575 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 [2024-10-14 16:40:51,654 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 [2024-10-14 16:40:51,737 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 [2024-10-14 16:40:51,740 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 [2024-10-14 16:40:51,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3425 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:40:51,745 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 16:40:52,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3425 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:40:52,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918151987] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 16:40:52,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 16:40:52,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 14, 14] total 33 [2024-10-14 16:40:52,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283829332] [2024-10-14 16:40:52,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 16:40:52,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-14 16:40:52,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 16:40:52,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-14 16:40:52,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=643, Unknown=0, NotChecked=0, Total=1056 [2024-10-14 16:40:52,679 INFO L87 Difference]: Start difference. First operand 1898 states and 2539 transitions. Second operand has 33 states, 33 states have (on average 49.121212121212125) internal successors, (1621), 32 states have internal predecessors, (1621), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-14 16:40:54,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 16:40:54,370 INFO L93 Difference]: Finished difference Result 12829 states and 17366 transitions. [2024-10-14 16:40:54,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-10-14 16:40:54,371 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 49.121212121212125) internal successors, (1621), 32 states have internal predecessors, (1621), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 847 [2024-10-14 16:40:54,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 16:40:54,404 INFO L225 Difference]: With dead ends: 12829 [2024-10-14 16:40:54,405 INFO L226 Difference]: Without dead ends: 12387 [2024-10-14 16:40:54,409 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1736 GetRequests, 1683 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=878, Invalid=1774, Unknown=0, NotChecked=0, Total=2652 [2024-10-14 16:40:54,410 INFO L432 NwaCegarLoop]: 422 mSDtfsCounter, 22755 mSDsluCounter, 11243 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22803 SdHoareTripleChecker+Valid, 11665 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-14 16:40:54,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22803 Valid, 11665 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-14 16:40:54,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12387 states. [2024-10-14 16:40:54,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12387 to 3626. [2024-10-14 16:40:54,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3626 states, 3598 states have (on average 1.3360200111172873) internal successors, (4807), 3599 states have internal predecessors, (4807), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-14 16:40:54,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 4855 transitions. [2024-10-14 16:40:54,539 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 4855 transitions. Word has length 847 [2024-10-14 16:40:54,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 16:40:54,540 INFO L471 AbstractCegarLoop]: Abstraction has 3626 states and 4855 transitions. [2024-10-14 16:40:54,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 49.121212121212125) internal successors, (1621), 32 states have internal predecessors, (1621), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-14 16:40:54,541 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 4855 transitions. [2024-10-14 16:40:54,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1760 [2024-10-14 16:40:54,557 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 16:40:54,558 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 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] [2024-10-14 16:40:54,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-14 16:40:54,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:40:54,759 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 16:40:54,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 16:40:54,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1921080062, now seen corresponding path program 2 times [2024-10-14 16:40:54,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 16:40:54,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618377358] [2024-10-14 16:40:54,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 16:40:54,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 16:40:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:41:28,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-14 16:41:28,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:41:28,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-14 16:41:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 16:41:28,356 INFO L134 CoverageAnalysis]: Checked inductivity of 17561 backedges. 0 proven. 17558 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-14 16:41:28,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 16:41:28,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618377358] [2024-10-14 16:41:28,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618377358] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 16:41:28,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035890557] [2024-10-14 16:41:28,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 16:41:28,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 16:41:28,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 16:41:28,358 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 16:41:28,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 16:41:29,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-14 16:41:29,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 16:41:29,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-14 16:41:29,317 INFO L278 TraceCheckSpWp]: Computing forward predicates...