./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.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 dfe9cedb3fb732c747a1ef802da6fccda86efe7de6f5d2fc74063f23f28dc4dd --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 09:24:52,225 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 09:24:52,293 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 09:24:52,298 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 09:24:52,301 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 09:24:52,329 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 09:24:52,330 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 09:24:52,331 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 09:24:52,331 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 09:24:52,335 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 09:24:52,336 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 09:24:52,336 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 09:24:52,336 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 09:24:52,337 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 09:24:52,337 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 09:24:52,337 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 09:24:52,337 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 09:24:52,338 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 09:24:52,338 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 09:24:52,338 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 09:24:52,341 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 09:24:52,342 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 09:24:52,342 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 09:24:52,342 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 09:24:52,342 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 09:24:52,342 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 09:24:52,343 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 09:24:52,343 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 09:24:52,343 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 09:24:52,343 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 09:24:52,344 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 09:24:52,344 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 09:24:52,344 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:24:52,344 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 09:24:52,345 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 09:24:52,345 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 09:24:52,345 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 09:24:52,345 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 09:24:52,346 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 09:24:52,346 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 09:24:52,347 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 09:24:52,347 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 09:24:52,347 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfe9cedb3fb732c747a1ef802da6fccda86efe7de6f5d2fc74063f23f28dc4dd [2024-10-13 09:24:52,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 09:24:52,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 09:24:52,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 09:24:52,615 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 09:24:52,615 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 09:24:52,616 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i [2024-10-13 09:24:54,102 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 09:24:54,396 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 09:24:54,396 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i [2024-10-13 09:24:54,415 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be2f62528/4e861bd71b6a4a7d86d8e7a86fe12d02/FLAGe9c5e17f3 [2024-10-13 09:24:54,434 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be2f62528/4e861bd71b6a4a7d86d8e7a86fe12d02 [2024-10-13 09:24:54,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 09:24:54,440 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 09:24:54,442 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 09:24:54,442 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 09:24:54,448 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 09:24:54,449 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:24:54" (1/1) ... [2024-10-13 09:24:54,449 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15c1445d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:24:54, skipping insertion in model container [2024-10-13 09:24:54,450 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:24:54" (1/1) ... [2024-10-13 09:24:54,504 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 09:24:54,969 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i[33021,33034] [2024-10-13 09:24:55,111 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i[45234,45247] [2024-10-13 09:24:55,128 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:24:55,143 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 09:24:55,182 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i[33021,33034] [2024-10-13 09:24:55,240 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i[45234,45247] [2024-10-13 09:24:55,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:24:55,294 INFO L204 MainTranslator]: Completed translation [2024-10-13 09:24:55,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:24:55 WrapperNode [2024-10-13 09:24:55,295 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 09:24:55,296 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 09:24:55,297 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 09:24:55,297 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 09:24:55,305 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:24:55" (1/1) ... [2024-10-13 09:24:55,337 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:24:55" (1/1) ... [2024-10-13 09:24:55,400 INFO L138 Inliner]: procedures = 177, calls = 340, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1589 [2024-10-13 09:24:55,400 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 09:24:55,401 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 09:24:55,401 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 09:24:55,401 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 09:24:55,419 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:24:55" (1/1) ... [2024-10-13 09:24:55,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:24:55" (1/1) ... [2024-10-13 09:24:55,431 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:24:55" (1/1) ... [2024-10-13 09:24:55,534 INFO L175 MemorySlicer]: Split 304 memory accesses to 3 slices as follows [2, 268, 34]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 62 writes are split as follows [0, 58, 4]. [2024-10-13 09:24:55,538 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:24:55" (1/1) ... [2024-10-13 09:24:55,538 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:24:55" (1/1) ... [2024-10-13 09:24:55,585 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:24:55" (1/1) ... [2024-10-13 09:24:55,604 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:24:55" (1/1) ... [2024-10-13 09:24:55,609 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:24:55" (1/1) ... [2024-10-13 09:24:55,616 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:24:55" (1/1) ... [2024-10-13 09:24:55,626 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 09:24:55,628 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 09:24:55,628 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 09:24:55,628 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 09:24:55,628 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:24:55" (1/1) ... [2024-10-13 09:24:55,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:24:55,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:24:55,666 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 09:24:55,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 09:24:55,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 09:24:55,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 09:24:55,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-13 09:24:55,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-13 09:24:55,716 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-13 09:24:55,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 09:24:55,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 09:24:55,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-13 09:24:55,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-13 09:24:55,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-13 09:24:55,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-10-13 09:24:55,717 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-13 09:24:55,717 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-13 09:24:55,718 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-10-13 09:24:55,718 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2024-10-13 09:24:55,718 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2024-10-13 09:24:55,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-13 09:24:55,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 09:24:55,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-13 09:24:55,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-13 09:24:55,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-13 09:24:55,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 09:24:55,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-13 09:24:55,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-13 09:24:55,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-13 09:24:55,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 09:24:55,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 09:24:55,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 09:24:55,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 09:24:55,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 09:24:55,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 09:24:55,995 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 09:24:56,000 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 09:24:57,629 INFO L? ?]: Removed 355 outVars from TransFormulas that were not future-live. [2024-10-13 09:24:57,629 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 09:24:57,720 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 09:24:57,724 INFO L314 CfgBuilder]: Removed 71 assume(true) statements. [2024-10-13 09:24:57,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:24:57 BoogieIcfgContainer [2024-10-13 09:24:57,725 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 09:24:57,727 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 09:24:57,728 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 09:24:57,732 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 09:24:57,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:24:54" (1/3) ... [2024-10-13 09:24:57,733 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c52d420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:24:57, skipping insertion in model container [2024-10-13 09:24:57,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:24:55" (2/3) ... [2024-10-13 09:24:57,733 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c52d420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:24:57, skipping insertion in model container [2024-10-13 09:24:57,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:24:57" (3/3) ... [2024-10-13 09:24:57,735 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test8-2.i [2024-10-13 09:24:57,752 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 09:24:57,752 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-13 09:24:57,824 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:24:57,830 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;@53b533f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:24:57,831 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-13 09:24:57,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 464 states, 438 states have (on average 1.6369863013698631) internal successors, (717), 455 states have internal predecessors, (717), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-13 09:24:57,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-13 09:24:57,844 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:24:57,845 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:24:57,845 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:24:57,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:24:57,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1067961426, now seen corresponding path program 1 times [2024-10-13 09:24:57,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:24:57,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708902825] [2024-10-13 09:24:57,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:24:57,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:24:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:24:58,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:24:58,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:24:58,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708902825] [2024-10-13 09:24:58,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708902825] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:24:58,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:24:58,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:24:58,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954331420] [2024-10-13 09:24:58,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:24:58,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 09:24:58,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:24:58,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 09:24:58,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 09:24:58,054 INFO L87 Difference]: Start difference. First operand has 464 states, 438 states have (on average 1.6369863013698631) internal successors, (717), 455 states have internal predecessors, (717), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:24:58,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:24:58,168 INFO L93 Difference]: Finished difference Result 927 states and 1530 transitions. [2024-10-13 09:24:58,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 09:24:58,172 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2024-10-13 09:24:58,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:24:58,188 INFO L225 Difference]: With dead ends: 927 [2024-10-13 09:24:58,189 INFO L226 Difference]: Without dead ends: 428 [2024-10-13 09:24:58,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 09:24:58,202 INFO L432 NwaCegarLoop]: 674 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 09:24:58,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 674 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 09:24:58,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2024-10-13 09:24:58,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2024-10-13 09:24:58,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 403 states have (on average 1.466501240694789) internal successors, (591), 419 states have internal predecessors, (591), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-13 09:24:58,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 631 transitions. [2024-10-13 09:24:58,268 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 631 transitions. Word has length 8 [2024-10-13 09:24:58,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:24:58,268 INFO L471 AbstractCegarLoop]: Abstraction has 428 states and 631 transitions. [2024-10-13 09:24:58,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:24:58,270 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 631 transitions. [2024-10-13 09:24:58,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-13 09:24:58,277 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:24:58,277 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:24:58,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 09:24:58,278 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:24:58,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:24:58,279 INFO L85 PathProgramCache]: Analyzing trace with hash 403066284, now seen corresponding path program 1 times [2024-10-13 09:24:58,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:24:58,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126493495] [2024-10-13 09:24:58,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:24:58,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:24:58,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:24:58,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:24:58,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:24:58,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126493495] [2024-10-13 09:24:58,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126493495] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:24:58,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:24:58,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 09:24:58,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067610798] [2024-10-13 09:24:58,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:24:58,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 09:24:58,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:24:58,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 09:24:58,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 09:24:58,740 INFO L87 Difference]: Start difference. First operand 428 states and 631 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:24:58,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:24:58,952 INFO L93 Difference]: Finished difference Result 1039 states and 1531 transitions. [2024-10-13 09:24:58,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 09:24:58,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2024-10-13 09:24:58,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:24:58,959 INFO L225 Difference]: With dead ends: 1039 [2024-10-13 09:24:58,960 INFO L226 Difference]: Without dead ends: 812 [2024-10-13 09:24:58,962 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 09:24:58,963 INFO L432 NwaCegarLoop]: 652 mSDtfsCounter, 546 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 09:24:58,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 1907 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 09:24:58,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2024-10-13 09:24:59,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 430. [2024-10-13 09:24:59,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 405 states have (on average 1.4641975308641975) internal successors, (593), 421 states have internal predecessors, (593), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-13 09:24:59,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 633 transitions. [2024-10-13 09:24:59,006 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 633 transitions. Word has length 63 [2024-10-13 09:24:59,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:24:59,007 INFO L471 AbstractCegarLoop]: Abstraction has 430 states and 633 transitions. [2024-10-13 09:24:59,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:24:59,007 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 633 transitions. [2024-10-13 09:24:59,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-13 09:24:59,017 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:24:59,017 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:24:59,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 09:24:59,018 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:24:59,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:24:59,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1680180753, now seen corresponding path program 1 times [2024-10-13 09:24:59,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:24:59,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699915768] [2024-10-13 09:24:59,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:24:59,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:24:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:24:59,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:24:59,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:24:59,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699915768] [2024-10-13 09:24:59,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699915768] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:24:59,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:24:59,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 09:24:59,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837462112] [2024-10-13 09:24:59,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:24:59,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 09:24:59,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:24:59,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 09:24:59,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 09:24:59,373 INFO L87 Difference]: Start difference. First operand 430 states and 633 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:24:59,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:24:59,480 INFO L93 Difference]: Finished difference Result 860 states and 1266 transitions. [2024-10-13 09:24:59,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 09:24:59,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-10-13 09:24:59,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:24:59,485 INFO L225 Difference]: With dead ends: 860 [2024-10-13 09:24:59,485 INFO L226 Difference]: Without dead ends: 433 [2024-10-13 09:24:59,488 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 09:24:59,489 INFO L432 NwaCegarLoop]: 599 mSDtfsCounter, 105 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 09:24:59,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1706 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 09:24:59,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2024-10-13 09:24:59,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 430. [2024-10-13 09:24:59,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 405 states have (on average 1.4469135802469135) internal successors, (586), 421 states have internal predecessors, (586), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-13 09:24:59,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 626 transitions. [2024-10-13 09:24:59,512 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 626 transitions. Word has length 84 [2024-10-13 09:24:59,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:24:59,513 INFO L471 AbstractCegarLoop]: Abstraction has 430 states and 626 transitions. [2024-10-13 09:24:59,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:24:59,513 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 626 transitions. [2024-10-13 09:24:59,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-13 09:24:59,515 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:24:59,515 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:24:59,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 09:24:59,516 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:24:59,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:24:59,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1523747101, now seen corresponding path program 1 times [2024-10-13 09:24:59,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:24:59,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962828365] [2024-10-13 09:24:59,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:24:59,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:24:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:24:59,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:24:59,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:24:59,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962828365] [2024-10-13 09:24:59,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962828365] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:24:59,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:24:59,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:24:59,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113944314] [2024-10-13 09:24:59,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:24:59,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:24:59,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:24:59,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:24:59,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:24:59,743 INFO L87 Difference]: Start difference. First operand 430 states and 626 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:24:59,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:24:59,858 INFO L93 Difference]: Finished difference Result 1151 states and 1681 transitions. [2024-10-13 09:24:59,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:24:59,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2024-10-13 09:24:59,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:24:59,863 INFO L225 Difference]: With dead ends: 1151 [2024-10-13 09:24:59,863 INFO L226 Difference]: Without dead ends: 724 [2024-10-13 09:24:59,864 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:24:59,868 INFO L432 NwaCegarLoop]: 808 mSDtfsCounter, 371 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 09:24:59,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 1406 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 09:24:59,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2024-10-13 09:24:59,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 721. [2024-10-13 09:24:59,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 695 states have (on average 1.4561151079136692) internal successors, (1012), 711 states have internal predecessors, (1012), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-13 09:24:59,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1054 transitions. [2024-10-13 09:24:59,898 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1054 transitions. Word has length 84 [2024-10-13 09:24:59,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:24:59,900 INFO L471 AbstractCegarLoop]: Abstraction has 721 states and 1054 transitions. [2024-10-13 09:24:59,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:24:59,900 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1054 transitions. [2024-10-13 09:24:59,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-10-13 09:24:59,904 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:24:59,905 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-13 09:24:59,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 09:24:59,905 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:24:59,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:24:59,906 INFO L85 PathProgramCache]: Analyzing trace with hash 2001950907, now seen corresponding path program 1 times [2024-10-13 09:24:59,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:24:59,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970321632] [2024-10-13 09:24:59,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:24:59,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:25:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:00,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-13 09:25:00,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:00,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-13 09:25:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:00,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 09:25:00,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:25:00,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970321632] [2024-10-13 09:25:00,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970321632] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:25:00,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344986586] [2024-10-13 09:25:00,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:25:00,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:25:00,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:25:00,573 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:25:00,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 09:25:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:00,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-13 09:25:00,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:25:00,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 09:25:01,008 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 [2024-10-13 09:25:01,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 09:25:01,975 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:25:01,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344986586] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:25:01,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:25:01,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 14 [2024-10-13 09:25:01,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639072542] [2024-10-13 09:25:01,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:25:01,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 09:25:01,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:25:01,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 09:25:01,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-10-13 09:25:01,978 INFO L87 Difference]: Start difference. First operand 721 states and 1054 transitions. Second operand has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 10 states have internal predecessors, (89), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 09:25:04,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:25:04,059 INFO L93 Difference]: Finished difference Result 1690 states and 2454 transitions. [2024-10-13 09:25:04,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 09:25:04,062 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 10 states have internal predecessors, (89), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 97 [2024-10-13 09:25:04,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:25:04,067 INFO L225 Difference]: With dead ends: 1690 [2024-10-13 09:25:04,067 INFO L226 Difference]: Without dead ends: 1054 [2024-10-13 09:25:04,070 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2024-10-13 09:25:04,071 INFO L432 NwaCegarLoop]: 602 mSDtfsCounter, 816 mSDsluCounter, 2917 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 3519 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-13 09:25:04,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 3519 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-13 09:25:04,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2024-10-13 09:25:04,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 747. [2024-10-13 09:25:04,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 721 states have (on average 1.4466019417475728) internal successors, (1043), 737 states have internal predecessors, (1043), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-13 09:25:04,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1085 transitions. [2024-10-13 09:25:04,101 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1085 transitions. Word has length 97 [2024-10-13 09:25:04,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:25:04,102 INFO L471 AbstractCegarLoop]: Abstraction has 747 states and 1085 transitions. [2024-10-13 09:25:04,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 10 states have internal predecessors, (89), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 09:25:04,103 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1085 transitions. [2024-10-13 09:25:04,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-10-13 09:25:04,107 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:25:04,108 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-13 09:25:04,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-13 09:25:04,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:25:04,313 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:25:04,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:25:04,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1928637173, now seen corresponding path program 1 times [2024-10-13 09:25:04,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:25:04,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734245670] [2024-10-13 09:25:04,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:25:04,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:25:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:04,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-13 09:25:04,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:04,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-13 09:25:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:04,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 09:25:04,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:25:04,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734245670] [2024-10-13 09:25:04,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734245670] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:25:04,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502440008] [2024-10-13 09:25:04,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:25:04,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:25:04,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:25:04,738 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:25:04,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 09:25:05,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:05,207 INFO L255 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-10-13 09:25:05,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:25:05,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 09:25:05,245 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 [2024-10-13 09:25:06,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 09:25:06,197 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:25:06,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502440008] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:25:06,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:25:06,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 15 [2024-10-13 09:25:06,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385486461] [2024-10-13 09:25:06,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:25:06,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 09:25:06,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:25:06,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 09:25:06,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-10-13 09:25:06,199 INFO L87 Difference]: Start difference. First operand 747 states and 1085 transitions. Second operand has 12 states, 12 states have (on average 7.5) internal successors, (90), 11 states have internal predecessors, (90), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 09:25:11,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-13 09:25:12,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:25:12,343 INFO L93 Difference]: Finished difference Result 1738 states and 2518 transitions. [2024-10-13 09:25:12,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-13 09:25:12,344 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 11 states have internal predecessors, (90), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 98 [2024-10-13 09:25:12,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:25:12,350 INFO L225 Difference]: With dead ends: 1738 [2024-10-13 09:25:12,350 INFO L226 Difference]: Without dead ends: 1107 [2024-10-13 09:25:12,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2024-10-13 09:25:12,353 INFO L432 NwaCegarLoop]: 598 mSDtfsCounter, 882 mSDsluCounter, 3088 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 3686 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-10-13 09:25:12,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 3686 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 943 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2024-10-13 09:25:12,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2024-10-13 09:25:12,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 783. [2024-10-13 09:25:12,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 757 states have (on average 1.4385733157199472) internal successors, (1089), 773 states have internal predecessors, (1089), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-13 09:25:12,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1131 transitions. [2024-10-13 09:25:12,389 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1131 transitions. Word has length 98 [2024-10-13 09:25:12,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:25:12,391 INFO L471 AbstractCegarLoop]: Abstraction has 783 states and 1131 transitions. [2024-10-13 09:25:12,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 11 states have internal predecessors, (90), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 09:25:12,392 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1131 transitions. [2024-10-13 09:25:12,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-13 09:25:12,393 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:25:12,393 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-13 09:25:12,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 09:25:12,593 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,SelfDestructingSolverStorable5 [2024-10-13 09:25:12,594 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:25:12,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:25:12,594 INFO L85 PathProgramCache]: Analyzing trace with hash -422667761, now seen corresponding path program 1 times [2024-10-13 09:25:12,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:25:12,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743311231] [2024-10-13 09:25:12,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:25:12,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:25:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:13,006 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-13 09:25:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:13,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-13 09:25:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:13,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 09:25:13,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:25:13,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743311231] [2024-10-13 09:25:13,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743311231] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:25:13,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:25:13,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-13 09:25:13,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845897083] [2024-10-13 09:25:13,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:25:13,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 09:25:13,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:25:13,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 09:25:13,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-13 09:25:13,017 INFO L87 Difference]: Start difference. First operand 783 states and 1131 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 09:25:14,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:25:14,179 INFO L93 Difference]: Finished difference Result 1476 states and 2146 transitions. [2024-10-13 09:25:14,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 09:25:14,180 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 99 [2024-10-13 09:25:14,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:25:14,185 INFO L225 Difference]: With dead ends: 1476 [2024-10-13 09:25:14,185 INFO L226 Difference]: Without dead ends: 819 [2024-10-13 09:25:14,187 INFO L431 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 [2024-10-13 09:25:14,188 INFO L432 NwaCegarLoop]: 532 mSDtfsCounter, 68 mSDsluCounter, 2493 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-10-13 09:25:14,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 3025 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-10-13 09:25:14,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2024-10-13 09:25:14,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 811. [2024-10-13 09:25:14,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 785 states have (on average 1.4394904458598725) internal successors, (1130), 801 states have internal predecessors, (1130), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-13 09:25:14,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1172 transitions. [2024-10-13 09:25:14,238 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1172 transitions. Word has length 99 [2024-10-13 09:25:14,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:25:14,238 INFO L471 AbstractCegarLoop]: Abstraction has 811 states and 1172 transitions. [2024-10-13 09:25:14,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 09:25:14,242 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1172 transitions. [2024-10-13 09:25:14,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-10-13 09:25:14,243 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:25:14,244 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-13 09:25:14,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 09:25:14,244 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:25:14,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:25:14,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1667412822, now seen corresponding path program 1 times [2024-10-13 09:25:14,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:25:14,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722364927] [2024-10-13 09:25:14,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:25:14,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:25:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:14,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-13 09:25:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:14,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-13 09:25:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:14,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 09:25:14,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:25:14,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722364927] [2024-10-13 09:25:14,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722364927] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:25:14,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:25:14,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-13 09:25:14,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718672450] [2024-10-13 09:25:14,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:25:14,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 09:25:14,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:25:14,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 09:25:14,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-13 09:25:14,623 INFO L87 Difference]: Start difference. First operand 811 states and 1172 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 09:25:15,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:25:15,515 INFO L93 Difference]: Finished difference Result 1502 states and 2183 transitions. [2024-10-13 09:25:15,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 09:25:15,520 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 99 [2024-10-13 09:25:15,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:25:15,525 INFO L225 Difference]: With dead ends: 1502 [2024-10-13 09:25:15,525 INFO L226 Difference]: Without dead ends: 819 [2024-10-13 09:25:15,527 INFO L431 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 [2024-10-13 09:25:15,527 INFO L432 NwaCegarLoop]: 544 mSDtfsCounter, 63 mSDsluCounter, 2092 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 2636 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-13 09:25:15,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 2636 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-13 09:25:15,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2024-10-13 09:25:15,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 817. [2024-10-13 09:25:15,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 791 states have (on average 1.436156763590392) internal successors, (1136), 807 states have internal predecessors, (1136), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-13 09:25:15,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1178 transitions. [2024-10-13 09:25:15,554 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1178 transitions. Word has length 99 [2024-10-13 09:25:15,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:25:15,554 INFO L471 AbstractCegarLoop]: Abstraction has 817 states and 1178 transitions. [2024-10-13 09:25:15,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 09:25:15,554 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1178 transitions. [2024-10-13 09:25:15,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-13 09:25:15,555 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:25:15,555 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-13 09:25:15,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 09:25:15,556 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:25:15,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:25:15,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1813840567, now seen corresponding path program 1 times [2024-10-13 09:25:15,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:25:15,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465838637] [2024-10-13 09:25:15,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:25:15,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:25:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:16,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-13 09:25:16,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:16,039 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-13 09:25:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:16,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 09:25:16,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:25:16,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465838637] [2024-10-13 09:25:16,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465838637] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:25:16,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351232049] [2024-10-13 09:25:16,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:25:16,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:25:16,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:25:16,045 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:25:16,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 09:25:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:16,388 INFO L255 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-13 09:25:16,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:25:16,493 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 09:25:16,494 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:25:16,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351232049] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:25:16,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:25:16,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2024-10-13 09:25:16,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475642104] [2024-10-13 09:25:16,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:25:16,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 09:25:16,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:25:16,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 09:25:16,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-13 09:25:16,497 INFO L87 Difference]: Start difference. First operand 817 states and 1178 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 09:25:16,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:25:16,985 INFO L93 Difference]: Finished difference Result 1530 states and 2217 transitions. [2024-10-13 09:25:16,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 09:25:16,986 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 100 [2024-10-13 09:25:16,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:25:16,990 INFO L225 Difference]: With dead ends: 1530 [2024-10-13 09:25:16,990 INFO L226 Difference]: Without dead ends: 837 [2024-10-13 09:25:16,991 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-10-13 09:25:16,992 INFO L432 NwaCegarLoop]: 602 mSDtfsCounter, 43 mSDsluCounter, 2483 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3085 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-13 09:25:16,992 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3085 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-13 09:25:16,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2024-10-13 09:25:17,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 813. [2024-10-13 09:25:17,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 787 states have (on average 1.434561626429479) internal successors, (1129), 803 states have internal predecessors, (1129), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-13 09:25:17,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1171 transitions. [2024-10-13 09:25:17,015 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1171 transitions. Word has length 100 [2024-10-13 09:25:17,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:25:17,016 INFO L471 AbstractCegarLoop]: Abstraction has 813 states and 1171 transitions. [2024-10-13 09:25:17,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 09:25:17,016 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1171 transitions. [2024-10-13 09:25:17,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-13 09:25:17,017 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:25:17,017 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-13 09:25:17,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 09:25:17,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:25:17,222 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:25:17,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:25:17,223 INFO L85 PathProgramCache]: Analyzing trace with hash -69680462, now seen corresponding path program 1 times [2024-10-13 09:25:17,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:25:17,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102901741] [2024-10-13 09:25:17,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:25:17,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:25:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:17,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-13 09:25:17,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:17,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-13 09:25:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:17,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 09:25:17,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:25:17,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102901741] [2024-10-13 09:25:17,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102901741] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:25:17,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225010826] [2024-10-13 09:25:17,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:25:17,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:25:17,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:25:17,559 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:25:17,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 09:25:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:25:17,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 09:25:17,938 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:25:35,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 09:25:35,088 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:25:35,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225010826] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:25:35,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:25:35,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2024-10-13 09:25:35,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631664660] [2024-10-13 09:25:35,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:25:35,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 09:25:35,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:25:35,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 09:25:35,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-10-13 09:25:35,093 INFO L87 Difference]: Start difference. First operand 813 states and 1171 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 09:25:39,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-13 09:25:43,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-13 09:25:47,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-13 09:25:50,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.85s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-13 09:25:52,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-13 09:25:56,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-13 09:26:00,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-13 09:26:04,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-10-13 09:26:05,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:26:05,093 INFO L93 Difference]: Finished difference Result 1497 states and 2166 transitions. [2024-10-13 09:26:05,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 09:26:05,094 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 100 [2024-10-13 09:26:05,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:26:05,098 INFO L225 Difference]: With dead ends: 1497 [2024-10-13 09:26:05,098 INFO L226 Difference]: Without dead ends: 825 [2024-10-13 09:26:05,099 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-10-13 09:26:05,100 INFO L432 NwaCegarLoop]: 606 mSDtfsCounter, 12 mSDsluCounter, 2384 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2990 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.9s IncrementalHoareTripleChecker+Time [2024-10-13 09:26:05,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2990 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 794 Invalid, 6 Unknown, 0 Unchecked, 29.9s Time] [2024-10-13 09:26:05,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2024-10-13 09:26:05,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 817. [2024-10-13 09:26:05,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 791 states have (on average 1.4323640960809103) internal successors, (1133), 807 states have internal predecessors, (1133), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-13 09:26:05,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1175 transitions. [2024-10-13 09:26:05,125 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1175 transitions. Word has length 100 [2024-10-13 09:26:05,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:26:05,125 INFO L471 AbstractCegarLoop]: Abstraction has 817 states and 1175 transitions. [2024-10-13 09:26:05,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 09:26:05,125 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1175 transitions. [2024-10-13 09:26:05,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-10-13 09:26:05,126 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:26:05,127 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-13 09:26:05,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 09:26:05,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:26:05,328 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:26:05,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:26:05,329 INFO L85 PathProgramCache]: Analyzing trace with hash 2036675938, now seen corresponding path program 1 times [2024-10-13 09:26:05,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:26:05,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516122646] [2024-10-13 09:26:05,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:26:05,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:26:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:26:05,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-13 09:26:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:26:05,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-13 09:26:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:26:05,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 09:26:05,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:26:05,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516122646] [2024-10-13 09:26:05,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516122646] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:26:05,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:26:05,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-13 09:26:05,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735289999] [2024-10-13 09:26:05,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:26:05,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 09:26:05,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:26:05,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 09:26:05,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-10-13 09:26:05,783 INFO L87 Difference]: Start difference. First operand 817 states and 1175 transitions. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 10 states have internal predecessors, (94), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 09:26:07,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:26:07,082 INFO L93 Difference]: Finished difference Result 1525 states and 2204 transitions. [2024-10-13 09:26:07,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-13 09:26:07,082 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 10 states have internal predecessors, (94), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 102 [2024-10-13 09:26:07,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:26:07,087 INFO L225 Difference]: With dead ends: 1525 [2024-10-13 09:26:07,087 INFO L226 Difference]: Without dead ends: 851 [2024-10-13 09:26:07,088 INFO L431 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 [2024-10-13 09:26:07,089 INFO L432 NwaCegarLoop]: 540 mSDtfsCounter, 77 mSDsluCounter, 3408 mSDsCounter, 0 mSdLazyCounter, 1762 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 3948 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-13 09:26:07,089 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 3948 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1762 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-13 09:26:07,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2024-10-13 09:26:07,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 837. [2024-10-13 09:26:07,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 811 states have (on average 1.4266337854500617) internal successors, (1157), 827 states have internal predecessors, (1157), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-13 09:26:07,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1199 transitions. [2024-10-13 09:26:07,111 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1199 transitions. Word has length 102 [2024-10-13 09:26:07,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:26:07,111 INFO L471 AbstractCegarLoop]: Abstraction has 837 states and 1199 transitions. [2024-10-13 09:26:07,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 10 states have internal predecessors, (94), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 09:26:07,112 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1199 transitions. [2024-10-13 09:26:07,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-10-13 09:26:07,113 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:26:07,113 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-13 09:26:07,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 09:26:07,113 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:26:07,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:26:07,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1608954182, now seen corresponding path program 1 times [2024-10-13 09:26:07,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:26:07,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733696260] [2024-10-13 09:26:07,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:26:07,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:26:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:26:07,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-13 09:26:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:26:07,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-13 09:26:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:26:07,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 09:26:07,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:26:07,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733696260] [2024-10-13 09:26:07,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733696260] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:26:07,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994016504] [2024-10-13 09:26:07,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:26:07,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:26:07,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:26:07,383 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:26:07,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 09:26:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:26:07,959 INFO L255 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-13 09:26:07,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:26:08,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 09:26:08,554 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:26:08,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994016504] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:26:08,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:26:08,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2024-10-13 09:26:08,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404384887] [2024-10-13 09:26:08,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:26:08,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:26:08,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:26:08,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:26:08,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-10-13 09:26:08,556 INFO L87 Difference]: Start difference. First operand 837 states and 1199 transitions. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 09:26:10,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 09:26:10,186 INFO L93 Difference]: Finished difference Result 1547 states and 2231 transitions. [2024-10-13 09:26:10,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 09:26:10,186 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 102 [2024-10-13 09:26:10,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 09:26:10,190 INFO L225 Difference]: With dead ends: 1547 [2024-10-13 09:26:10,190 INFO L226 Difference]: Without dead ends: 863 [2024-10-13 09:26:10,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-10-13 09:26:10,192 INFO L432 NwaCegarLoop]: 598 mSDtfsCounter, 18 mSDsluCounter, 3868 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 4466 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-13 09:26:10,192 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 4466 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-13 09:26:10,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2024-10-13 09:26:10,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 857. [2024-10-13 09:26:10,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 831 states have (on average 1.4259927797833936) internal successors, (1185), 847 states have internal predecessors, (1185), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-13 09:26:10,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1227 transitions. [2024-10-13 09:26:10,212 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1227 transitions. Word has length 102 [2024-10-13 09:26:10,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 09:26:10,212 INFO L471 AbstractCegarLoop]: Abstraction has 857 states and 1227 transitions. [2024-10-13 09:26:10,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-13 09:26:10,212 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1227 transitions. [2024-10-13 09:26:10,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-10-13 09:26:10,213 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 09:26:10,213 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-10-13 09:26:10,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-13 09:26:10,414 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,SelfDestructingSolverStorable11 [2024-10-13 09:26:10,414 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-13 09:26:10,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:26:10,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1567586803, now seen corresponding path program 1 times [2024-10-13 09:26:10,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:26:10,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106318985] [2024-10-13 09:26:10,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:26:10,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:26:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:26:10,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-13 09:26:10,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:26:10,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-13 09:26:10,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:26:10,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 09:26:10,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:26:10,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106318985] [2024-10-13 09:26:10,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106318985] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:26:10,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736038127] [2024-10-13 09:26:10,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:26:10,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:26:10,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:26:10,708 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:26:10,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 09:26:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:26:11,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-13 09:26:11,193 INFO L278 TraceCheckSpWp]: Computing forward predicates...