./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test2-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 12:02:10,682 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 12:02:10,735 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 12:02:10,741 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 12:02:10,743 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 12:02:10,770 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 12:02:10,771 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 12:02:10,771 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 12:02:10,772 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 12:02:10,772 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 12:02:10,772 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 12:02:10,773 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 12:02:10,774 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 12:02:10,775 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 12:02:10,776 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 12:02:10,776 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 12:02:10,776 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 12:02:10,777 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 12:02:10,777 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 12:02:10,777 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 12:02:10,777 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 12:02:10,780 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 12:02:10,780 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 12:02:10,780 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 12:02:10,780 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 12:02:10,781 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 12:02:10,781 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 12:02:10,781 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 12:02:10,781 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 12:02:10,781 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 12:02:10,781 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 12:02:10,781 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 12:02:10,782 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 12:02:10,782 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 12:02:10,782 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 12:02:10,782 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 12:02:10,782 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 12:02:10,782 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 12:02:10,782 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 12:02:10,783 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 12:02:10,783 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 12:02:10,785 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 12:02:10,785 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c [2024-11-12 12:02:10,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 12:02:10,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 12:02:10,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 12:02:10,999 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 12:02:11,001 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 12:02:11,002 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test2-2.i [2024-11-12 12:02:12,239 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 12:02:12,472 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 12:02:12,473 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test2-2.i [2024-11-12 12:02:12,493 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72b8aa745/376e8eb43054406fa0e9f8fdd4bc43a9/FLAG0273227af [2024-11-12 12:02:12,508 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72b8aa745/376e8eb43054406fa0e9f8fdd4bc43a9 [2024-11-12 12:02:12,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 12:02:12,511 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 12:02:12,513 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 12:02:12,514 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 12:02:12,518 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 12:02:12,520 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:02:12" (1/1) ... [2024-11-12 12:02:12,520 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@103fb993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:02:12, skipping insertion in model container [2024-11-12 12:02:12,521 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:02:12" (1/1) ... [2024-11-12 12:02:12,583 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 12:02:12,925 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test2-2.i[37435,37448] [2024-11-12 12:02:13,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 12:02:13,062 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 12:02:13,098 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test2-2.i[37435,37448] [2024-11-12 12:02:13,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 12:02:13,194 INFO L204 MainTranslator]: Completed translation [2024-11-12 12:02:13,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:02:13 WrapperNode [2024-11-12 12:02:13,196 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 12:02:13,198 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 12:02:13,199 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 12:02:13,199 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 12:02:13,205 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:02:13" (1/1) ... [2024-11-12 12:02:13,233 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:02:13" (1/1) ... [2024-11-12 12:02:13,289 INFO L138 Inliner]: procedures = 207, calls = 272, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1443 [2024-11-12 12:02:13,289 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 12:02:13,290 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 12:02:13,290 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 12:02:13,290 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 12:02:13,304 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:02:13" (1/1) ... [2024-11-12 12:02:13,304 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:02:13" (1/1) ... [2024-11-12 12:02:13,314 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:02:13" (1/1) ... [2024-11-12 12:02:13,381 INFO L175 MemorySlicer]: Split 254 memory accesses to 3 slices as follows [2, 34, 218]. 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, 4, 50]. [2024-11-12 12:02:13,382 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:02:13" (1/1) ... [2024-11-12 12:02:13,382 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:02:13" (1/1) ... [2024-11-12 12:02:13,421 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:02:13" (1/1) ... [2024-11-12 12:02:13,434 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:02:13" (1/1) ... [2024-11-12 12:02:13,438 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:02:13" (1/1) ... [2024-11-12 12:02:13,448 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:02:13" (1/1) ... [2024-11-12 12:02:13,462 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 12:02:13,464 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 12:02:13,464 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 12:02:13,464 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 12:02:13,465 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:02:13" (1/1) ... [2024-11-12 12:02:13,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 12:02:13,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 12:02:13,499 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 12:02:13,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 12:02:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-12 12:02:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-12 12:02:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-12 12:02:13,537 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-12 12:02:13,537 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-12 12:02:13,537 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-12 12:02:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-12 12:02:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-12 12:02:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-12 12:02:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-12 12:02:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-12 12:02:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 12:02:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 12:02:13,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-12 12:02:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 12:02:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 12:02:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-12 12:02:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-12 12:02:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 12:02:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-12 12:02:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-12 12:02:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-12 12:02:13,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 12:02:13,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 12:02:13,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-12 12:02:13,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 12:02:13,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 12:02:13,720 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 12:02:13,722 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 12:02:14,882 INFO L? ?]: Removed 321 outVars from TransFormulas that were not future-live. [2024-11-12 12:02:14,882 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 12:02:14,904 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 12:02:14,904 INFO L316 CfgBuilder]: Removed 63 assume(true) statements. [2024-11-12 12:02:14,905 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:02:14 BoogieIcfgContainer [2024-11-12 12:02:14,905 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 12:02:14,906 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 12:02:14,906 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 12:02:14,909 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 12:02:14,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:02:12" (1/3) ... [2024-11-12 12:02:14,910 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ff0350e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:02:14, skipping insertion in model container [2024-11-12 12:02:14,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:02:13" (2/3) ... [2024-11-12 12:02:14,910 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ff0350e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:02:14, skipping insertion in model container [2024-11-12 12:02:14,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:02:14" (3/3) ... [2024-11-12 12:02:14,911 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_nondet_test2-2.i [2024-11-12 12:02:14,951 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 12:02:14,951 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-12 12:02:15,015 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 12:02:15,021 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;@37e4a250, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 12:02:15,021 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-12 12:02:15,025 INFO L276 IsEmpty]: Start isEmpty. Operand has 401 states, 395 states have (on average 1.620253164556962) internal successors, (640), 396 states have internal predecessors, (640), 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) [2024-11-12 12:02:15,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-12 12:02:15,030 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:02:15,031 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:02:15,031 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 12:02:15,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:02:15,035 INFO L85 PathProgramCache]: Analyzing trace with hash -271903450, now seen corresponding path program 1 times [2024-11-12 12:02:15,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:02:15,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616015877] [2024-11-12 12:02:15,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:02:15,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:02:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:15,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 12:02:15,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:02:15,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616015877] [2024-11-12 12:02:15,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616015877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:02:15,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:02:15,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 12:02:15,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121288846] [2024-11-12 12:02:15,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:02:15,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-12 12:02:15,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:02:15,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-12 12:02:15,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-12 12:02:15,220 INFO L87 Difference]: Start difference. First operand has 401 states, 395 states have (on average 1.620253164556962) internal successors, (640), 396 states have internal predecessors, (640), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 12:02:15,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 12:02:15,279 INFO L93 Difference]: Finished difference Result 799 states and 1288 transitions. [2024-11-12 12:02:15,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-12 12:02:15,281 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2024-11-12 12:02:15,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 12:02:15,291 INFO L225 Difference]: With dead ends: 799 [2024-11-12 12:02:15,291 INFO L226 Difference]: Without dead ends: 362 [2024-11-12 12:02:15,295 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-12 12:02:15,301 INFO L435 NwaCegarLoop]: 578 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 12:02:15,302 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 12:02:15,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2024-11-12 12:02:15,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2024-11-12 12:02:15,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 357 states have (on average 1.453781512605042) internal successors, (519), 357 states have internal predecessors, (519), 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) [2024-11-12 12:02:15,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 525 transitions. [2024-11-12 12:02:15,351 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 525 transitions. Word has length 11 [2024-11-12 12:02:15,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 12:02:15,351 INFO L471 AbstractCegarLoop]: Abstraction has 362 states and 525 transitions. [2024-11-12 12:02:15,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 12:02:15,351 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 525 transitions. [2024-11-12 12:02:15,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-12 12:02:15,357 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:02:15,358 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:02:15,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 12:02:15,358 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 12:02:15,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:02:15,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1335073267, now seen corresponding path program 1 times [2024-11-12 12:02:15,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:02:15,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254399512] [2024-11-12 12:02:15,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:02:15,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:02:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:15,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 12:02:15,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:02:15,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254399512] [2024-11-12 12:02:15,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254399512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:02:15,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:02:15,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 12:02:15,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084106896] [2024-11-12 12:02:15,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:02:15,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 12:02:15,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:02:15,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 12:02:15,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 12:02:15,696 INFO L87 Difference]: Start difference. First operand 362 states and 525 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 12:02:15,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 12:02:15,812 INFO L93 Difference]: Finished difference Result 479 states and 693 transitions. [2024-11-12 12:02:15,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 12:02:15,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 66 [2024-11-12 12:02:15,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 12:02:15,817 INFO L225 Difference]: With dead ends: 479 [2024-11-12 12:02:15,817 INFO L226 Difference]: Without dead ends: 320 [2024-11-12 12:02:15,818 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-12 12:02:15,821 INFO L435 NwaCegarLoop]: 423 mSDtfsCounter, 30 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 12:02:15,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1250 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 12:02:15,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-12 12:02:15,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2024-11-12 12:02:15,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 315 states have (on average 1.403174603174603) internal successors, (442), 315 states have internal predecessors, (442), 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) [2024-11-12 12:02:15,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 448 transitions. [2024-11-12 12:02:15,840 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 448 transitions. Word has length 66 [2024-11-12 12:02:15,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 12:02:15,840 INFO L471 AbstractCegarLoop]: Abstraction has 320 states and 448 transitions. [2024-11-12 12:02:15,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 12:02:15,841 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 448 transitions. [2024-11-12 12:02:15,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-12 12:02:15,843 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:02:15,843 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:02:15,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 12:02:15,843 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 12:02:15,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:02:15,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1779429657, now seen corresponding path program 1 times [2024-11-12 12:02:15,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:02:15,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938681166] [2024-11-12 12:02:15,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:02:15,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:02:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:16,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 12:02:16,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:02:16,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938681166] [2024-11-12 12:02:16,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938681166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:02:16,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:02:16,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 12:02:16,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359118652] [2024-11-12 12:02:16,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:02:16,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 12:02:16,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:02:16,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 12:02:16,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-12 12:02:16,298 INFO L87 Difference]: Start difference. First operand 320 states and 448 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 12:02:16,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 12:02:16,412 INFO L93 Difference]: Finished difference Result 752 states and 1048 transitions. [2024-11-12 12:02:16,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 12:02:16,413 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 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 66 [2024-11-12 12:02:16,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 12:02:16,416 INFO L225 Difference]: With dead ends: 752 [2024-11-12 12:02:16,417 INFO L226 Difference]: Without dead ends: 632 [2024-11-12 12:02:16,418 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-12 12:02:16,419 INFO L435 NwaCegarLoop]: 472 mSDtfsCounter, 428 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1839 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 12:02:16,421 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 1839 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 12:02:16,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2024-11-12 12:02:16,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 322. [2024-11-12 12:02:16,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 317 states have (on average 1.4006309148264984) internal successors, (444), 317 states have internal predecessors, (444), 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) [2024-11-12 12:02:16,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 450 transitions. [2024-11-12 12:02:16,436 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 450 transitions. Word has length 66 [2024-11-12 12:02:16,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 12:02:16,436 INFO L471 AbstractCegarLoop]: Abstraction has 322 states and 450 transitions. [2024-11-12 12:02:16,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 12:02:16,437 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 450 transitions. [2024-11-12 12:02:16,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-12 12:02:16,441 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:02:16,441 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:02:16,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 12:02:16,441 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 12:02:16,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:02:16,442 INFO L85 PathProgramCache]: Analyzing trace with hash 857389398, now seen corresponding path program 1 times [2024-11-12 12:02:16,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:02:16,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008146447] [2024-11-12 12:02:16,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:02:16,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:02:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:16,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 12:02:16,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:02:16,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008146447] [2024-11-12 12:02:16,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008146447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:02:16,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:02:16,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 12:02:16,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348469011] [2024-11-12 12:02:16,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:02:16,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 12:02:16,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:02:16,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 12:02:16,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 12:02:16,712 INFO L87 Difference]: Start difference. First operand 322 states and 450 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 12:02:16,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 12:02:16,783 INFO L93 Difference]: Finished difference Result 597 states and 829 transitions. [2024-11-12 12:02:16,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 12:02:16,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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 142 [2024-11-12 12:02:16,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 12:02:16,787 INFO L225 Difference]: With dead ends: 597 [2024-11-12 12:02:16,787 INFO L226 Difference]: Without dead ends: 280 [2024-11-12 12:02:16,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-12 12:02:16,788 INFO L435 NwaCegarLoop]: 340 mSDtfsCounter, 30 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 12:02:16,791 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1001 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 12:02:16,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-12 12:02:16,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2024-11-12 12:02:16,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 275 states have (on average 1.3345454545454545) internal successors, (367), 275 states have internal predecessors, (367), 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) [2024-11-12 12:02:16,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 373 transitions. [2024-11-12 12:02:16,799 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 373 transitions. Word has length 142 [2024-11-12 12:02:16,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 12:02:16,801 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 373 transitions. [2024-11-12 12:02:16,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 12:02:16,801 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 373 transitions. [2024-11-12 12:02:16,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-12 12:02:16,804 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:02:16,804 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:02:16,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 12:02:16,805 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 12:02:16,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:02:16,805 INFO L85 PathProgramCache]: Analyzing trace with hash -172432950, now seen corresponding path program 1 times [2024-11-12 12:02:16,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:02:16,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090561698] [2024-11-12 12:02:16,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:02:16,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:02:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:16,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 12:02:16,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:02:16,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090561698] [2024-11-12 12:02:16,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090561698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:02:16,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:02:16,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 12:02:16,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580790805] [2024-11-12 12:02:16,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:02:16,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 12:02:16,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:02:16,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 12:02:16,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 12:02:16,957 INFO L87 Difference]: Start difference. First operand 280 states and 373 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 12:02:17,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 12:02:17,007 INFO L93 Difference]: Finished difference Result 738 states and 988 transitions. [2024-11-12 12:02:17,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 12:02:17,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 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 142 [2024-11-12 12:02:17,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 12:02:17,010 INFO L225 Difference]: With dead ends: 738 [2024-11-12 12:02:17,010 INFO L226 Difference]: Without dead ends: 463 [2024-11-12 12:02:17,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 12:02:17,011 INFO L435 NwaCegarLoop]: 469 mSDtfsCounter, 178 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 12:02:17,012 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 813 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 12:02:17,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-11-12 12:02:17,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 461. [2024-11-12 12:02:17,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 456 states have (on average 1.3399122807017543) internal successors, (611), 456 states have internal predecessors, (611), 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) [2024-11-12 12:02:17,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 617 transitions. [2024-11-12 12:02:17,027 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 617 transitions. Word has length 142 [2024-11-12 12:02:17,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 12:02:17,027 INFO L471 AbstractCegarLoop]: Abstraction has 461 states and 617 transitions. [2024-11-12 12:02:17,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 12:02:17,028 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 617 transitions. [2024-11-12 12:02:17,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-12 12:02:17,032 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:02:17,032 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:02:17,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-12 12:02:17,032 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 12:02:17,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:02:17,033 INFO L85 PathProgramCache]: Analyzing trace with hash 227303843, now seen corresponding path program 1 times [2024-11-12 12:02:17,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:02:17,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171339207] [2024-11-12 12:02:17,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:02:17,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:02:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:17,285 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 12:02:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:17,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 12:02:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:17,296 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 12:02:17,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:02:17,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171339207] [2024-11-12 12:02:17,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171339207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:02:17,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:02:17,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-12 12:02:17,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682797615] [2024-11-12 12:02:17,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:02:17,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 12:02:17,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:02:17,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 12:02:17,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 12:02:17,299 INFO L87 Difference]: Start difference. First operand 461 states and 617 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 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) [2024-11-12 12:02:17,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 12:02:17,513 INFO L93 Difference]: Finished difference Result 890 states and 1201 transitions. [2024-11-12 12:02:17,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 12:02:17,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 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 157 [2024-11-12 12:02:17,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 12:02:17,517 INFO L225 Difference]: With dead ends: 890 [2024-11-12 12:02:17,519 INFO L226 Difference]: Without dead ends: 464 [2024-11-12 12:02:17,520 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-12 12:02:17,521 INFO L435 NwaCegarLoop]: 352 mSDtfsCounter, 3 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-12 12:02:17,522 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 984 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-12 12:02:17,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2024-11-12 12:02:17,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 461. [2024-11-12 12:02:17,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 456 states have (on average 1.3267543859649122) internal successors, (605), 456 states have internal predecessors, (605), 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) [2024-11-12 12:02:17,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 611 transitions. [2024-11-12 12:02:17,534 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 611 transitions. Word has length 157 [2024-11-12 12:02:17,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 12:02:17,534 INFO L471 AbstractCegarLoop]: Abstraction has 461 states and 611 transitions. [2024-11-12 12:02:17,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 3 states have internal predecessors, (150), 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) [2024-11-12 12:02:17,535 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 611 transitions. [2024-11-12 12:02:17,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-12 12:02:17,537 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:02:17,537 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:02:17,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-12 12:02:17,537 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 12:02:17,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:02:17,538 INFO L85 PathProgramCache]: Analyzing trace with hash 933900449, now seen corresponding path program 1 times [2024-11-12 12:02:17,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:02:17,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564300633] [2024-11-12 12:02:17,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:02:17,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:02:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:17,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 12:02:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:17,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 12:02:17,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:17,779 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 12:02:17,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:02:17,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564300633] [2024-11-12 12:02:17,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564300633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:02:17,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:02:17,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-12 12:02:17,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656948402] [2024-11-12 12:02:17,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:02:17,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-12 12:02:17,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:02:17,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-12 12:02:17,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-12 12:02:17,781 INFO L87 Difference]: Start difference. First operand 461 states and 611 transitions. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 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) [2024-11-12 12:02:18,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 12:02:18,082 INFO L93 Difference]: Finished difference Result 912 states and 1215 transitions. [2024-11-12 12:02:18,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-12 12:02:18,082 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 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 157 [2024-11-12 12:02:18,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 12:02:18,084 INFO L225 Difference]: With dead ends: 912 [2024-11-12 12:02:18,084 INFO L226 Difference]: Without dead ends: 543 [2024-11-12 12:02:18,085 INFO L434 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 [2024-11-12 12:02:18,085 INFO L435 NwaCegarLoop]: 429 mSDtfsCounter, 921 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 12:02:18,085 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 1269 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 12:02:18,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2024-11-12 12:02:18,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 367. [2024-11-12 12:02:18,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 362 states have (on average 1.3176795580110496) internal successors, (477), 362 states have internal predecessors, (477), 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) [2024-11-12 12:02:18,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 483 transitions. [2024-11-12 12:02:18,100 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 483 transitions. Word has length 157 [2024-11-12 12:02:18,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 12:02:18,101 INFO L471 AbstractCegarLoop]: Abstraction has 367 states and 483 transitions. [2024-11-12 12:02:18,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 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) [2024-11-12 12:02:18,101 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 483 transitions. [2024-11-12 12:02:18,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-12 12:02:18,102 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:02:18,102 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:02:18,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-12 12:02:18,103 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 12:02:18,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:02:18,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1074857037, now seen corresponding path program 1 times [2024-11-12 12:02:18,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:02:18,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626183539] [2024-11-12 12:02:18,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:02:18,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:02:18,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:18,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-12 12:02:18,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:18,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-12 12:02:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:18,579 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 12:02:18,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:02:18,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626183539] [2024-11-12 12:02:18,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626183539] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 12:02:18,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785601635] [2024-11-12 12:02:18,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:02:18,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 12:02:18,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 12:02:18,582 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 12:02:18,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-12 12:02:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:18,892 INFO L256 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-12 12:02:18,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 12:02:18,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-12 12:02:18,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2024-11-12 12:02:19,741 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 12:02:19,741 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 12:02:19,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785601635] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:02:19,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 12:02:19,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2024-11-12 12:02:19,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264130111] [2024-11-12 12:02:19,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:02:19,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 12:02:19,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:02:19,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 12:02:19,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-12 12:02:19,743 INFO L87 Difference]: Start difference. First operand 367 states and 483 transitions. Second operand has 11 states, 11 states have (on average 14.545454545454545) internal successors, (160), 11 states have internal predecessors, (160), 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) [2024-11-12 12:02:21,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 12:02:21,002 INFO L93 Difference]: Finished difference Result 861 states and 1146 transitions. [2024-11-12 12:02:21,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 12:02:21,003 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.545454545454545) internal successors, (160), 11 states have internal predecessors, (160), 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 167 [2024-11-12 12:02:21,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 12:02:21,006 INFO L225 Difference]: With dead ends: 861 [2024-11-12 12:02:21,006 INFO L226 Difference]: Without dead ends: 539 [2024-11-12 12:02:21,007 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2024-11-12 12:02:21,008 INFO L435 NwaCegarLoop]: 379 mSDtfsCounter, 463 mSDsluCounter, 1805 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 2184 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-12 12:02:21,008 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 2184 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-12 12:02:21,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2024-11-12 12:02:21,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 367. [2024-11-12 12:02:21,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 362 states have (on average 1.3149171270718232) internal successors, (476), 362 states have internal predecessors, (476), 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) [2024-11-12 12:02:21,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 482 transitions. [2024-11-12 12:02:21,021 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 482 transitions. Word has length 167 [2024-11-12 12:02:21,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 12:02:21,021 INFO L471 AbstractCegarLoop]: Abstraction has 367 states and 482 transitions. [2024-11-12 12:02:21,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.545454545454545) internal successors, (160), 11 states have internal predecessors, (160), 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) [2024-11-12 12:02:21,021 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 482 transitions. [2024-11-12 12:02:21,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-12 12:02:21,023 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:02:21,023 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:02:21,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-12 12:02:21,227 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 [2024-11-12 12:02:21,228 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 12:02:21,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:02:21,229 INFO L85 PathProgramCache]: Analyzing trace with hash -452928430, now seen corresponding path program 1 times [2024-11-12 12:02:21,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:02:21,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526240705] [2024-11-12 12:02:21,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:02:21,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:02:21,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:21,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-12 12:02:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:21,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-12 12:02:21,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:21,718 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 12:02:21,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:02:21,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526240705] [2024-11-12 12:02:21,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526240705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 12:02:21,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465641740] [2024-11-12 12:02:21,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:02:21,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 12:02:21,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 12:02:21,721 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 12:02:21,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-12 12:02:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:22,018 INFO L256 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-12 12:02:22,028 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 12:02:22,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-12 12:02:22,642 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-12 12:02:22,643 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 12:02:22,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465641740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:02:22,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 12:02:22,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2024-11-12 12:02:22,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266144624] [2024-11-12 12:02:22,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:02:22,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 12:02:22,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:02:22,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 12:02:22,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-12 12:02:22,645 INFO L87 Difference]: Start difference. First operand 367 states and 482 transitions. Second operand has 10 states, 10 states have (on average 16.0) internal successors, (160), 10 states have internal predecessors, (160), 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) [2024-11-12 12:02:23,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 12:02:23,351 INFO L93 Difference]: Finished difference Result 668 states and 879 transitions. [2024-11-12 12:02:23,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 12:02:23,352 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 10 states have internal predecessors, (160), 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 168 [2024-11-12 12:02:23,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 12:02:23,355 INFO L225 Difference]: With dead ends: 668 [2024-11-12 12:02:23,355 INFO L226 Difference]: Without dead ends: 551 [2024-11-12 12:02:23,356 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-11-12 12:02:23,357 INFO L435 NwaCegarLoop]: 400 mSDtfsCounter, 358 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 2324 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-12 12:02:23,357 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 2324 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-12 12:02:23,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2024-11-12 12:02:23,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 404. [2024-11-12 12:02:23,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 399 states have (on average 1.2957393483709274) internal successors, (517), 399 states have internal predecessors, (517), 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) [2024-11-12 12:02:23,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 523 transitions. [2024-11-12 12:02:23,371 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 523 transitions. Word has length 168 [2024-11-12 12:02:23,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 12:02:23,371 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 523 transitions. [2024-11-12 12:02:23,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.0) internal successors, (160), 10 states have internal predecessors, (160), 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) [2024-11-12 12:02:23,372 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 523 transitions. [2024-11-12 12:02:23,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-12 12:02:23,373 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:02:23,373 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:02:23,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-12 12:02:23,573 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 [2024-11-12 12:02:23,574 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 12:02:23,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:02:23,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1111494486, now seen corresponding path program 1 times [2024-11-12 12:02:23,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:02:23,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80422748] [2024-11-12 12:02:23,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:02:23,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:02:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:23,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-12 12:02:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:23,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-12 12:02:23,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:23,974 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 12:02:23,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:02:23,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80422748] [2024-11-12 12:02:23,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80422748] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 12:02:23,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826449196] [2024-11-12 12:02:23,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:02:23,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 12:02:23,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 12:02:23,978 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 12:02:23,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-12 12:02:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:24,419 INFO L256 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-12 12:02:24,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 12:02:24,479 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-12 12:02:24,479 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 12:02:24,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826449196] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:02:24,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 12:02:24,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-11-12 12:02:24,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634059521] [2024-11-12 12:02:24,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:02:24,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-12 12:02:24,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:02:24,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-12 12:02:24,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-12 12:02:24,481 INFO L87 Difference]: Start difference. First operand 404 states and 523 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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) [2024-11-12 12:02:24,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 12:02:24,640 INFO L93 Difference]: Finished difference Result 521 states and 679 transitions. [2024-11-12 12:02:24,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-12 12:02:24,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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 169 [2024-11-12 12:02:24,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 12:02:24,643 INFO L225 Difference]: With dead ends: 521 [2024-11-12 12:02:24,643 INFO L226 Difference]: Without dead ends: 404 [2024-11-12 12:02:24,644 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-12 12:02:24,644 INFO L435 NwaCegarLoop]: 347 mSDtfsCounter, 17 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 12:02:24,644 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1202 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 12:02:24,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-11-12 12:02:24,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 404. [2024-11-12 12:02:24,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 399 states have (on average 1.2932330827067668) internal successors, (516), 399 states have internal predecessors, (516), 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) [2024-11-12 12:02:24,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 522 transitions. [2024-11-12 12:02:24,657 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 522 transitions. Word has length 169 [2024-11-12 12:02:24,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 12:02:24,658 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 522 transitions. [2024-11-12 12:02:24,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 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) [2024-11-12 12:02:24,658 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 522 transitions. [2024-11-12 12:02:24,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-12 12:02:24,659 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:02:24,659 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:02:24,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-12 12:02:24,860 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 [2024-11-12 12:02:24,861 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 12:02:24,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:02:24,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1334240339, now seen corresponding path program 1 times [2024-11-12 12:02:24,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:02:24,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64856821] [2024-11-12 12:02:24,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:02:24,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:02:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:25,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-12 12:02:25,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:25,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-12 12:02:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:25,169 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-12 12:02:25,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:02:25,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64856821] [2024-11-12 12:02:25,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64856821] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:02:25,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:02:25,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 12:02:25,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076617886] [2024-11-12 12:02:25,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:02:25,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 12:02:25,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:02:25,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 12:02:25,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-12 12:02:25,171 INFO L87 Difference]: Start difference. First operand 404 states and 522 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 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) [2024-11-12 12:02:25,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 12:02:25,502 INFO L93 Difference]: Finished difference Result 527 states and 688 transitions. [2024-11-12 12:02:25,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 12:02:25,503 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 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 170 [2024-11-12 12:02:25,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 12:02:25,505 INFO L225 Difference]: With dead ends: 527 [2024-11-12 12:02:25,505 INFO L226 Difference]: Without dead ends: 410 [2024-11-12 12:02:25,505 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-12 12:02:25,506 INFO L435 NwaCegarLoop]: 346 mSDtfsCounter, 11 mSDsluCounter, 1381 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 12:02:25,506 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1727 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 12:02:25,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2024-11-12 12:02:25,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 407. [2024-11-12 12:02:25,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 402 states have (on average 1.291044776119403) internal successors, (519), 402 states have internal predecessors, (519), 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) [2024-11-12 12:02:25,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 525 transitions. [2024-11-12 12:02:25,519 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 525 transitions. Word has length 170 [2024-11-12 12:02:25,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 12:02:25,519 INFO L471 AbstractCegarLoop]: Abstraction has 407 states and 525 transitions. [2024-11-12 12:02:25,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 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) [2024-11-12 12:02:25,520 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 525 transitions. [2024-11-12 12:02:25,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-12 12:02:25,521 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:02:25,521 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:02:25,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-12 12:02:25,521 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 12:02:25,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:02:25,521 INFO L85 PathProgramCache]: Analyzing trace with hash -2099473725, now seen corresponding path program 1 times [2024-11-12 12:02:25,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:02:25,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628350685] [2024-11-12 12:02:25,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:02:25,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:02:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:25,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-12 12:02:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:25,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-12 12:02:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:25,831 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-12 12:02:25,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:02:25,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628350685] [2024-11-12 12:02:25,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628350685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:02:25,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:02:25,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 12:02:25,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924024408] [2024-11-12 12:02:25,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:02:25,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 12:02:25,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:02:25,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 12:02:25,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-12 12:02:25,832 INFO L87 Difference]: Start difference. First operand 407 states and 525 transitions. Second operand has 8 states, 8 states have (on average 20.375) internal successors, (163), 7 states have internal predecessors, (163), 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) [2024-11-12 12:02:26,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 12:02:26,251 INFO L93 Difference]: Finished difference Result 535 states and 697 transitions. [2024-11-12 12:02:26,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 12:02:26,252 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 7 states have internal predecessors, (163), 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 171 [2024-11-12 12:02:26,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 12:02:26,254 INFO L225 Difference]: With dead ends: 535 [2024-11-12 12:02:26,254 INFO L226 Difference]: Without dead ends: 415 [2024-11-12 12:02:26,255 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-12 12:02:26,255 INFO L435 NwaCegarLoop]: 336 mSDtfsCounter, 15 mSDsluCounter, 1643 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1979 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-12 12:02:26,255 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1979 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-12 12:02:26,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2024-11-12 12:02:26,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 411. [2024-11-12 12:02:26,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 406 states have (on average 1.29064039408867) internal successors, (524), 406 states have internal predecessors, (524), 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) [2024-11-12 12:02:26,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 530 transitions. [2024-11-12 12:02:26,268 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 530 transitions. Word has length 171 [2024-11-12 12:02:26,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 12:02:26,269 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 530 transitions. [2024-11-12 12:02:26,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.375) internal successors, (163), 7 states have internal predecessors, (163), 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) [2024-11-12 12:02:26,269 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 530 transitions. [2024-11-12 12:02:26,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-12 12:02:26,270 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:02:26,270 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:02:26,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-12 12:02:26,271 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 12:02:26,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:02:26,271 INFO L85 PathProgramCache]: Analyzing trace with hash 440345511, now seen corresponding path program 1 times [2024-11-12 12:02:26,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:02:26,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393770903] [2024-11-12 12:02:26,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:02:26,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:02:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:26,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-12 12:02:26,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:26,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-12 12:02:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:26,625 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 12:02:26,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:02:26,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393770903] [2024-11-12 12:02:26,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393770903] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 12:02:26,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097991083] [2024-11-12 12:02:26,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:02:26,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 12:02:26,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 12:02:26,627 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 12:02:26,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-12 12:02:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:26,926 INFO L256 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-12 12:02:26,930 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 12:02:26,973 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 12:02:26,973 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 12:02:26,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097991083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:02:26,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 12:02:26,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-12 12:02:26,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311201328] [2024-11-12 12:02:26,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:02:26,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 12:02:26,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:02:26,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 12:02:26,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-12 12:02:26,976 INFO L87 Difference]: Start difference. First operand 411 states and 530 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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) [2024-11-12 12:02:27,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 12:02:27,079 INFO L93 Difference]: Finished difference Result 777 states and 1012 transitions. [2024-11-12 12:02:27,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 12:02:27,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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 171 [2024-11-12 12:02:27,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 12:02:27,081 INFO L225 Difference]: With dead ends: 777 [2024-11-12 12:02:27,081 INFO L226 Difference]: Without dead ends: 411 [2024-11-12 12:02:27,082 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-12 12:02:27,082 INFO L435 NwaCegarLoop]: 347 mSDtfsCounter, 17 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-12 12:02:27,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 912 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-12 12:02:27,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2024-11-12 12:02:27,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2024-11-12 12:02:27,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 406 states have (on average 1.2857142857142858) internal successors, (522), 406 states have internal predecessors, (522), 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) [2024-11-12 12:02:27,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 528 transitions. [2024-11-12 12:02:27,095 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 528 transitions. Word has length 171 [2024-11-12 12:02:27,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 12:02:27,096 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 528 transitions. [2024-11-12 12:02:27,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 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) [2024-11-12 12:02:27,096 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 528 transitions. [2024-11-12 12:02:27,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-12 12:02:27,097 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:02:27,097 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:02:27,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-12 12:02:27,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 12:02:27,302 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 12:02:27,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:02:27,303 INFO L85 PathProgramCache]: Analyzing trace with hash -465614479, now seen corresponding path program 1 times [2024-11-12 12:02:27,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:02:27,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311283024] [2024-11-12 12:02:27,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:02:27,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:02:27,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:27,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-12 12:02:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:27,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-12 12:02:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:27,641 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 12:02:27,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:02:27,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311283024] [2024-11-12 12:02:27,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311283024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:02:27,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:02:27,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-12 12:02:27,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241242881] [2024-11-12 12:02:27,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:02:27,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 12:02:27,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:02:27,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 12:02:27,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-12 12:02:27,644 INFO L87 Difference]: Start difference. First operand 411 states and 528 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 6 states have internal predecessors, (165), 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) [2024-11-12 12:02:27,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 12:02:27,955 INFO L93 Difference]: Finished difference Result 783 states and 1020 transitions. [2024-11-12 12:02:27,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 12:02:27,955 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 6 states have internal predecessors, (165), 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 172 [2024-11-12 12:02:27,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 12:02:27,957 INFO L225 Difference]: With dead ends: 783 [2024-11-12 12:02:27,957 INFO L226 Difference]: Without dead ends: 420 [2024-11-12 12:02:27,958 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-12 12:02:27,959 INFO L435 NwaCegarLoop]: 345 mSDtfsCounter, 11 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 12:02:27,959 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1471 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 12:02:27,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2024-11-12 12:02:27,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 417. [2024-11-12 12:02:27,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 412 states have (on average 1.2815533980582525) internal successors, (528), 412 states have internal predecessors, (528), 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) [2024-11-12 12:02:27,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 534 transitions. [2024-11-12 12:02:27,976 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 534 transitions. Word has length 172 [2024-11-12 12:02:27,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 12:02:27,976 INFO L471 AbstractCegarLoop]: Abstraction has 417 states and 534 transitions. [2024-11-12 12:02:27,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 6 states have internal predecessors, (165), 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) [2024-11-12 12:02:27,977 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 534 transitions. [2024-11-12 12:02:27,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-12 12:02:27,978 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:02:27,979 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:02:27,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-12 12:02:27,979 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 12:02:27,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:02:27,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1458957326, now seen corresponding path program 1 times [2024-11-12 12:02:27,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:02:27,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343784642] [2024-11-12 12:02:27,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:02:27,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:02:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:28,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-12 12:02:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:28,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-12 12:02:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:28,244 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-12 12:02:28,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:02:28,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343784642] [2024-11-12 12:02:28,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343784642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:02:28,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:02:28,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-12 12:02:28,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568136549] [2024-11-12 12:02:28,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:02:28,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 12:02:28,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:02:28,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 12:02:28,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-12 12:02:28,246 INFO L87 Difference]: Start difference. First operand 417 states and 534 transitions. Second operand has 8 states, 8 states have (on average 20.75) internal successors, (166), 7 states have internal predecessors, (166), 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) [2024-11-12 12:02:28,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 12:02:28,662 INFO L93 Difference]: Finished difference Result 789 states and 1024 transitions. [2024-11-12 12:02:28,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 12:02:28,662 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.75) internal successors, (166), 7 states have internal predecessors, (166), 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 173 [2024-11-12 12:02:28,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 12:02:28,664 INFO L225 Difference]: With dead ends: 789 [2024-11-12 12:02:28,665 INFO L226 Difference]: Without dead ends: 430 [2024-11-12 12:02:28,665 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-12 12:02:28,666 INFO L435 NwaCegarLoop]: 335 mSDtfsCounter, 15 mSDsluCounter, 1637 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1972 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-12 12:02:28,667 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1972 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-12 12:02:28,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2024-11-12 12:02:28,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 425. [2024-11-12 12:02:28,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 420 states have (on average 1.2809523809523808) internal successors, (538), 420 states have internal predecessors, (538), 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) [2024-11-12 12:02:28,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 544 transitions. [2024-11-12 12:02:28,680 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 544 transitions. Word has length 173 [2024-11-12 12:02:28,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 12:02:28,680 INFO L471 AbstractCegarLoop]: Abstraction has 425 states and 544 transitions. [2024-11-12 12:02:28,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.75) internal successors, (166), 7 states have internal predecessors, (166), 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) [2024-11-12 12:02:28,681 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 544 transitions. [2024-11-12 12:02:28,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-12 12:02:28,682 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:02:28,682 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:02:28,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-12 12:02:28,682 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 12:02:28,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:02:28,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1465343658, now seen corresponding path program 1 times [2024-11-12 12:02:28,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:02:28,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958158650] [2024-11-12 12:02:28,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:02:28,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:02:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:28,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-12 12:02:28,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:28,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-12 12:02:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:28,992 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 12:02:28,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:02:28,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958158650] [2024-11-12 12:02:28,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958158650] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 12:02:28,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392170374] [2024-11-12 12:02:28,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:02:28,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 12:02:28,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 12:02:28,995 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 12:02:28,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-12 12:02:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:29,373 INFO L256 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-12 12:02:29,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 12:02:29,570 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-12 12:02:29,571 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 12:02:29,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392170374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:02:29,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 12:02:29,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2024-11-12 12:02:29,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524614684] [2024-11-12 12:02:29,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:02:29,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 12:02:29,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:02:29,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 12:02:29,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-12 12:02:29,573 INFO L87 Difference]: Start difference. First operand 425 states and 544 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 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) [2024-11-12 12:02:29,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 12:02:29,854 INFO L93 Difference]: Finished difference Result 554 states and 715 transitions. [2024-11-12 12:02:29,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-12 12:02:29,855 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 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 173 [2024-11-12 12:02:29,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 12:02:29,856 INFO L225 Difference]: With dead ends: 554 [2024-11-12 12:02:29,857 INFO L226 Difference]: Without dead ends: 430 [2024-11-12 12:02:29,857 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-12 12:02:29,858 INFO L435 NwaCegarLoop]: 342 mSDtfsCounter, 12 mSDsluCounter, 1361 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 12:02:29,858 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1703 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 12:02:29,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2024-11-12 12:02:29,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 425. [2024-11-12 12:02:29,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 420 states have (on average 1.2809523809523808) internal successors, (538), 420 states have internal predecessors, (538), 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) [2024-11-12 12:02:29,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 544 transitions. [2024-11-12 12:02:29,870 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 544 transitions. Word has length 173 [2024-11-12 12:02:29,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 12:02:29,871 INFO L471 AbstractCegarLoop]: Abstraction has 425 states and 544 transitions. [2024-11-12 12:02:29,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 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) [2024-11-12 12:02:29,871 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 544 transitions. [2024-11-12 12:02:29,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-12 12:02:29,872 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:02:29,872 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:02:29,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-12 12:02:30,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-12 12:02:30,074 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 12:02:30,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:02:30,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1167232734, now seen corresponding path program 1 times [2024-11-12 12:02:30,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:02:30,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472374438] [2024-11-12 12:02:30,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:02:30,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:02:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:30,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-12 12:02:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:30,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-12 12:02:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:30,435 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-12 12:02:30,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:02:30,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472374438] [2024-11-12 12:02:30,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472374438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:02:30,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:02:30,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-12 12:02:30,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446839215] [2024-11-12 12:02:30,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:02:30,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 12:02:30,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:02:30,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 12:02:30,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-12 12:02:30,437 INFO L87 Difference]: Start difference. First operand 425 states and 544 transitions. Second operand has 10 states, 10 states have (on average 16.6) internal successors, (166), 9 states have internal predecessors, (166), 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) [2024-11-12 12:02:30,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 12:02:30,860 INFO L93 Difference]: Finished difference Result 562 states and 727 transitions. [2024-11-12 12:02:30,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 12:02:30,860 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 9 states have internal predecessors, (166), 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 174 [2024-11-12 12:02:30,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 12:02:30,862 INFO L225 Difference]: With dead ends: 562 [2024-11-12 12:02:30,862 INFO L226 Difference]: Without dead ends: 438 [2024-11-12 12:02:30,863 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-12 12:02:30,863 INFO L435 NwaCegarLoop]: 335 mSDtfsCounter, 23 mSDsluCounter, 2252 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2587 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-12 12:02:30,864 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2587 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-12 12:02:30,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2024-11-12 12:02:30,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 432. [2024-11-12 12:02:30,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 427 states have (on average 1.2810304449648713) internal successors, (547), 427 states have internal predecessors, (547), 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) [2024-11-12 12:02:30,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 553 transitions. [2024-11-12 12:02:30,884 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 553 transitions. Word has length 174 [2024-11-12 12:02:30,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 12:02:30,884 INFO L471 AbstractCegarLoop]: Abstraction has 432 states and 553 transitions. [2024-11-12 12:02:30,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.6) internal successors, (166), 9 states have internal predecessors, (166), 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) [2024-11-12 12:02:30,884 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 553 transitions. [2024-11-12 12:02:30,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-12 12:02:30,885 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:02:30,886 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:02:30,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-12 12:02:30,886 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 12:02:30,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:02:30,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1702749574, now seen corresponding path program 1 times [2024-11-12 12:02:30,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:02:30,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230161723] [2024-11-12 12:02:30,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:02:30,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:02:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:31,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-12 12:02:31,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:31,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-12 12:02:31,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:31,222 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 12:02:31,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:02:31,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230161723] [2024-11-12 12:02:31,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230161723] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 12:02:31,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322199395] [2024-11-12 12:02:31,222 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:02:31,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 12:02:31,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 12:02:31,224 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 12:02:31,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-12 12:02:31,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:31,606 INFO L256 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-12 12:02:31,610 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 12:02:31,719 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-12 12:02:31,719 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 12:02:31,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322199395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:02:31,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 12:02:31,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2024-11-12 12:02:31,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867947440] [2024-11-12 12:02:31,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:02:31,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-12 12:02:31,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:02:31,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-12 12:02:31,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-12 12:02:31,722 INFO L87 Difference]: Start difference. First operand 432 states and 553 transitions. Second operand has 8 states, 8 states have (on average 20.75) internal successors, (166), 8 states have internal predecessors, (166), 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) [2024-11-12 12:02:32,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 12:02:32,045 INFO L93 Difference]: Finished difference Result 577 states and 743 transitions. [2024-11-12 12:02:32,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-12 12:02:32,046 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.75) internal successors, (166), 8 states have internal predecessors, (166), 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 174 [2024-11-12 12:02:32,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 12:02:32,048 INFO L225 Difference]: With dead ends: 577 [2024-11-12 12:02:32,048 INFO L226 Difference]: Without dead ends: 446 [2024-11-12 12:02:32,049 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-12 12:02:32,049 INFO L435 NwaCegarLoop]: 344 mSDtfsCounter, 41 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 2015 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-12 12:02:32,049 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 2015 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-12 12:02:32,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2024-11-12 12:02:32,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 437. [2024-11-12 12:02:32,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 432 states have (on average 1.2800925925925926) internal successors, (553), 432 states have internal predecessors, (553), 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) [2024-11-12 12:02:32,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 559 transitions. [2024-11-12 12:02:32,062 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 559 transitions. Word has length 174 [2024-11-12 12:02:32,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 12:02:32,062 INFO L471 AbstractCegarLoop]: Abstraction has 437 states and 559 transitions. [2024-11-12 12:02:32,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.75) internal successors, (166), 8 states have internal predecessors, (166), 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) [2024-11-12 12:02:32,063 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 559 transitions. [2024-11-12 12:02:32,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-12 12:02:32,064 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:02:32,064 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:02:32,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-12 12:02:32,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-12 12:02:32,265 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 12:02:32,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:02:32,266 INFO L85 PathProgramCache]: Analyzing trace with hash 179310810, now seen corresponding path program 1 times [2024-11-12 12:02:32,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:02:32,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016573014] [2024-11-12 12:02:32,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:02:32,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:02:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:32,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-12 12:02:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:32,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-12 12:02:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:32,745 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-12 12:02:32,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:02:32,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016573014] [2024-11-12 12:02:32,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016573014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:02:32,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 12:02:32,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-12 12:02:32,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233381812] [2024-11-12 12:02:32,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:02:32,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-12 12:02:32,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:02:32,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-12 12:02:32,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-12 12:02:32,747 INFO L87 Difference]: Start difference. First operand 437 states and 559 transitions. Second operand has 11 states, 11 states have (on average 15.181818181818182) internal successors, (167), 10 states have internal predecessors, (167), 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) [2024-11-12 12:02:33,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 12:02:33,204 INFO L93 Difference]: Finished difference Result 585 states and 757 transitions. [2024-11-12 12:02:33,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-12 12:02:33,205 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.181818181818182) internal successors, (167), 10 states have internal predecessors, (167), 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 175 [2024-11-12 12:02:33,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 12:02:33,206 INFO L225 Difference]: With dead ends: 585 [2024-11-12 12:02:33,207 INFO L226 Difference]: Without dead ends: 449 [2024-11-12 12:02:33,207 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-12 12:02:33,207 INFO L435 NwaCegarLoop]: 342 mSDtfsCounter, 29 mSDsluCounter, 1988 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 2330 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-12 12:02:33,207 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 2330 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-12 12:02:33,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2024-11-12 12:02:33,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 440. [2024-11-12 12:02:33,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 435 states have (on average 1.27816091954023) internal successors, (556), 435 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) [2024-11-12 12:02:33,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 562 transitions. [2024-11-12 12:02:33,220 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 562 transitions. Word has length 175 [2024-11-12 12:02:33,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 12:02:33,220 INFO L471 AbstractCegarLoop]: Abstraction has 440 states and 562 transitions. [2024-11-12 12:02:33,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.181818181818182) internal successors, (167), 10 states have internal predecessors, (167), 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) [2024-11-12 12:02:33,221 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 562 transitions. [2024-11-12 12:02:33,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-12 12:02:33,222 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:02:33,222 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:02:33,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-12 12:02:33,222 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 12:02:33,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:02:33,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1404172478, now seen corresponding path program 1 times [2024-11-12 12:02:33,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:02:33,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896793583] [2024-11-12 12:02:33,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:02:33,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:02:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:33,470 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-12 12:02:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:33,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-12 12:02:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:33,495 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 12:02:33,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:02:33,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896793583] [2024-11-12 12:02:33,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896793583] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 12:02:33,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162789865] [2024-11-12 12:02:33,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:02:33,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 12:02:33,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 12:02:33,497 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 12:02:33,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-12 12:02:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:33,913 INFO L256 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-12 12:02:33,916 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 12:02:33,929 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 12:02:33,930 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 12:02:33,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162789865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:02:33,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 12:02:33,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2024-11-12 12:02:33,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396866023] [2024-11-12 12:02:33,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:02:33,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-12 12:02:33,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:02:33,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-12 12:02:33,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 12:02:33,933 INFO L87 Difference]: Start difference. First operand 440 states and 562 transitions. Second operand has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 12:02:33,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 12:02:33,959 INFO L93 Difference]: Finished difference Result 781 states and 1000 transitions. [2024-11-12 12:02:33,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-12 12:02:33,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 175 [2024-11-12 12:02:33,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 12:02:33,962 INFO L225 Difference]: With dead ends: 781 [2024-11-12 12:02:33,962 INFO L226 Difference]: Without dead ends: 443 [2024-11-12 12:02:33,963 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-12 12:02:33,964 INFO L435 NwaCegarLoop]: 353 mSDtfsCounter, 0 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 12:02:33,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1055 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 12:02:33,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2024-11-12 12:02:33,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2024-11-12 12:02:33,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 437 states have (on average 1.2791762013729977) internal successors, (559), 438 states have internal predecessors, (559), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-12 12:02:33,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 566 transitions. [2024-11-12 12:02:33,982 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 566 transitions. Word has length 175 [2024-11-12 12:02:33,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 12:02:33,983 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 566 transitions. [2024-11-12 12:02:33,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-12 12:02:33,983 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 566 transitions. [2024-11-12 12:02:33,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-12 12:02:33,984 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:02:33,984 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:02:34,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-12 12:02:34,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 12:02:34,186 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 12:02:34,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:02:34,186 INFO L85 PathProgramCache]: Analyzing trace with hash -63831072, now seen corresponding path program 1 times [2024-11-12 12:02:34,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:02:34,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945432471] [2024-11-12 12:02:34,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:02:34,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:02:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:34,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-12 12:02:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:34,571 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-12 12:02:34,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:34,581 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 12:02:34,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:02:34,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945432471] [2024-11-12 12:02:34,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945432471] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 12:02:34,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137503199] [2024-11-12 12:02:34,581 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:02:34,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 12:02:34,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 12:02:34,583 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 12:02:34,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-12 12:02:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:35,053 INFO L256 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-12 12:02:35,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 12:02:35,408 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-12 12:02:35,408 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 12:02:35,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137503199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:02:35,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 12:02:35,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2024-11-12 12:02:35,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681154383] [2024-11-12 12:02:35,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:02:35,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-12 12:02:35,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:02:35,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-12 12:02:35,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-11-12 12:02:35,410 INFO L87 Difference]: Start difference. First operand 443 states and 566 transitions. Second operand has 10 states, 10 states have (on average 16.8) internal successors, (168), 10 states have internal predecessors, (168), 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) [2024-11-12 12:02:39,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-12 12:02:40,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 12:02:40,521 INFO L93 Difference]: Finished difference Result 592 states and 763 transitions. [2024-11-12 12:02:40,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-12 12:02:40,522 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.8) internal successors, (168), 10 states have internal predecessors, (168), 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 177 [2024-11-12 12:02:40,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 12:02:40,524 INFO L225 Difference]: With dead ends: 592 [2024-11-12 12:02:40,524 INFO L226 Difference]: Without dead ends: 453 [2024-11-12 12:02:40,524 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 172 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-11-12 12:02:40,525 INFO L435 NwaCegarLoop]: 343 mSDtfsCounter, 17 mSDsluCounter, 2199 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-12 12:02:40,525 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2542 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 778 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2024-11-12 12:02:40,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2024-11-12 12:02:40,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 450. [2024-11-12 12:02:40,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 444 states have (on average 1.2792792792792793) internal successors, (568), 445 states have internal predecessors, (568), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-12 12:02:40,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 575 transitions. [2024-11-12 12:02:40,537 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 575 transitions. Word has length 177 [2024-11-12 12:02:40,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 12:02:40,538 INFO L471 AbstractCegarLoop]: Abstraction has 450 states and 575 transitions. [2024-11-12 12:02:40,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.8) internal successors, (168), 10 states have internal predecessors, (168), 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) [2024-11-12 12:02:40,538 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 575 transitions. [2024-11-12 12:02:40,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-12 12:02:40,539 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:02:40,539 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:02:40,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-12 12:02:40,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-12 12:02:40,741 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 12:02:40,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:02:40,741 INFO L85 PathProgramCache]: Analyzing trace with hash -260248480, now seen corresponding path program 1 times [2024-11-12 12:02:40,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:02:40,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11529772] [2024-11-12 12:02:40,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:02:40,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:02:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:41,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-12 12:02:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:41,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-12 12:02:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:41,123 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-12 12:02:41,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:02:41,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11529772] [2024-11-12 12:02:41,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11529772] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 12:02:41,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886801048] [2024-11-12 12:02:41,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:02:41,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 12:02:41,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 12:02:41,125 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 12:02:41,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-12 12:02:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:41,542 INFO L256 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-12 12:02:41,545 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 12:02:41,621 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-12 12:02:41,621 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-12 12:02:41,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886801048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 12:02:41,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-12 12:02:41,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-11-12 12:02:41,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038766380] [2024-11-12 12:02:41,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 12:02:41,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-12 12:02:41,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 12:02:41,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-12 12:02:41,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-12 12:02:41,623 INFO L87 Difference]: Start difference. First operand 450 states and 575 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 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) [2024-11-12 12:02:41,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 12:02:41,842 INFO L93 Difference]: Finished difference Result 605 states and 777 transitions. [2024-11-12 12:02:41,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-12 12:02:41,843 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 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 177 [2024-11-12 12:02:41,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 12:02:41,845 INFO L225 Difference]: With dead ends: 605 [2024-11-12 12:02:41,845 INFO L226 Difference]: Without dead ends: 459 [2024-11-12 12:02:41,845 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-12 12:02:41,846 INFO L435 NwaCegarLoop]: 331 mSDtfsCounter, 40 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 1714 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-12 12:02:41,846 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 1714 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-12 12:02:41,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-11-12 12:02:41,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 452. [2024-11-12 12:02:41,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 446 states have (on average 1.2780269058295963) internal successors, (570), 447 states have internal predecessors, (570), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-12 12:02:41,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 577 transitions. [2024-11-12 12:02:41,859 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 577 transitions. Word has length 177 [2024-11-12 12:02:41,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 12:02:41,860 INFO L471 AbstractCegarLoop]: Abstraction has 452 states and 577 transitions. [2024-11-12 12:02:41,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 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) [2024-11-12 12:02:41,860 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 577 transitions. [2024-11-12 12:02:41,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-12 12:02:41,862 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 12:02:41,863 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 12:02:41,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-12 12:02:42,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 12:02:42,064 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-12 12:02:42,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 12:02:42,065 INFO L85 PathProgramCache]: Analyzing trace with hash -195129241, now seen corresponding path program 1 times [2024-11-12 12:02:42,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 12:02:42,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319283245] [2024-11-12 12:02:42,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:02:42,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 12:02:42,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:46,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-12 12:02:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:46,424 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-12 12:02:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:46,514 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-12 12:02:46,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 12:02:46,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319283245] [2024-11-12 12:02:46,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319283245] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-12 12:02:46,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769499835] [2024-11-12 12:02:46,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 12:02:46,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-12 12:02:46,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 12:02:46,517 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-12 12:02:46,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-12 12:02:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 12:02:46,981 INFO L256 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 118 conjuncts are in the unsatisfiable core [2024-11-12 12:02:46,991 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-12 12:02:47,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-12 12:02:47,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-12 12:02:47,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-12 12:02:47,278 INFO L349 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2024-11-12 12:02:47,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2024-11-12 12:02:47,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2024-11-12 12:02:47,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-12 12:02:47,545 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-12 12:02:47,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 51 [2024-11-12 12:02:47,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-12 12:02:49,448 INFO L190 IndexEqualityManager]: detected not equals via solver