./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-2.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 be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 17:09:43,714 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 17:09:43,801 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 17:09:43,806 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 17:09:43,808 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 17:09:43,829 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 17:09:43,830 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 17:09:43,830 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 17:09:43,831 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 17:09:43,831 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 17:09:43,832 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 17:09:43,832 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 17:09:43,832 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 17:09:43,834 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 17:09:43,834 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 17:09:43,834 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 17:09:43,835 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 17:09:43,835 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 17:09:43,835 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 17:09:43,835 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 17:09:43,835 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 17:09:43,836 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 17:09:43,836 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 17:09:43,839 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 17:09:43,839 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 17:09:43,839 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 17:09:43,840 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 17:09:43,840 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 17:09:43,840 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 17:09:43,840 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 17:09:43,840 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 17:09:43,840 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 17:09:43,840 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 17:09:43,841 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 17:09:43,841 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 17:09:43,841 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 17:09:43,841 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 17:09:43,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 17:09:43,841 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 17:09:43,841 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 17:09:43,842 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 17:09:43,843 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 17:09:43,843 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 [2024-11-22 17:09:44,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 17:09:44,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 17:09:44,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 17:09:44,057 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 17:09:44,057 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 17:09:44,058 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-2.i [2024-11-22 17:09:45,356 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 17:09:45,567 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 17:09:45,567 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-2.i [2024-11-22 17:09:45,580 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fb9f71bd/a9a6466139f34ae19e13894199a713ca/FLAG68aa3e0a0 [2024-11-22 17:09:45,903 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fb9f71bd/a9a6466139f34ae19e13894199a713ca [2024-11-22 17:09:45,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 17:09:45,906 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 17:09:45,906 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 17:09:45,906 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 17:09:45,911 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 17:09:45,912 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 05:09:45" (1/1) ... [2024-11-22 17:09:45,913 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3230cfd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:09:45, skipping insertion in model container [2024-11-22 17:09:45,913 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 05:09:45" (1/1) ... [2024-11-22 17:09:45,949 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 17:09:46,282 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-2.i[33519,33532] [2024-11-22 17:09:46,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 17:09:46,406 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 17:09:46,425 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test3-2.i[33519,33532] [2024-11-22 17:09:46,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 17:09:46,532 INFO L204 MainTranslator]: Completed translation [2024-11-22 17:09:46,533 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:09:46 WrapperNode [2024-11-22 17:09:46,533 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 17:09:46,534 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 17:09:46,534 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 17:09:46,535 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 17:09:46,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:09:46" (1/1) ... [2024-11-22 17:09:46,568 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:09:46" (1/1) ... [2024-11-22 17:09:46,634 INFO L138 Inliner]: procedures = 177, calls = 324, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1597 [2024-11-22 17:09:46,638 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 17:09:46,639 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 17:09:46,639 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 17:09:46,639 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 17:09:46,652 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:09:46" (1/1) ... [2024-11-22 17:09:46,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:09:46" (1/1) ... [2024-11-22 17:09:46,668 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:09:46" (1/1) ... [2024-11-22 17:09:46,752 INFO L175 MemorySlicer]: Split 302 memory accesses to 3 slices as follows [2, 34, 266]. 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, 4, 58]. [2024-11-22 17:09:46,752 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:09:46" (1/1) ... [2024-11-22 17:09:46,753 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:09:46" (1/1) ... [2024-11-22 17:09:46,814 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:09:46" (1/1) ... [2024-11-22 17:09:46,851 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:09:46" (1/1) ... [2024-11-22 17:09:46,862 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:09:46" (1/1) ... [2024-11-22 17:09:46,870 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:09:46" (1/1) ... [2024-11-22 17:09:46,883 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 17:09:46,884 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 17:09:46,885 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 17:09:46,885 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 17:09:46,885 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:09:46" (1/1) ... [2024-11-22 17:09:46,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 17:09:46,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:09:46,913 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 17:09:46,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 17:09:46,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 17:09:46,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 17:09:46,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-22 17:09:46,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-22 17:09:46,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-22 17:09:46,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 17:09:46,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 17:09:46,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-22 17:09:46,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-22 17:09:46,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-22 17:09:46,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-22 17:09:46,956 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-22 17:09:46,956 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-22 17:09:46,956 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-22 17:09:46,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 17:09:46,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 17:09:46,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-22 17:09:46,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-22 17:09:46,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-22 17:09:46,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-22 17:09:46,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-22 17:09:46,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-22 17:09:46,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-22 17:09:46,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 17:09:46,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 17:09:46,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 17:09:46,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 17:09:46,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 17:09:46,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 17:09:47,134 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 17:09:47,135 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 17:09:48,343 INFO L? ?]: Removed 338 outVars from TransFormulas that were not future-live. [2024-11-22 17:09:48,344 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 17:09:48,367 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 17:09:48,370 INFO L316 CfgBuilder]: Removed 72 assume(true) statements. [2024-11-22 17:09:48,371 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 05:09:48 BoogieIcfgContainer [2024-11-22 17:09:48,371 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 17:09:48,372 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 17:09:48,372 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 17:09:48,375 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 17:09:48,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 05:09:45" (1/3) ... [2024-11-22 17:09:48,376 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41155e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 05:09:48, skipping insertion in model container [2024-11-22 17:09:48,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 05:09:46" (2/3) ... [2024-11-22 17:09:48,376 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41155e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 05:09:48, skipping insertion in model container [2024-11-22 17:09:48,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 05:09:48" (3/3) ... [2024-11-22 17:09:48,378 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_nondet_test3-2.i [2024-11-22 17:09:48,392 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 17:09:48,393 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 17:09:48,466 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 17:09:48,471 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;@25f74f95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 17:09:48,472 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 17:09:48,476 INFO L276 IsEmpty]: Start isEmpty. Operand has 437 states, 428 states have (on average 1.6214953271028036) internal successors, (694), 430 states have internal predecessors, (694), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 17:09:48,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-22 17:09:48,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:09:48,482 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:09:48,482 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:09:48,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:09:48,486 INFO L85 PathProgramCache]: Analyzing trace with hash 517723227, now seen corresponding path program 1 times [2024-11-22 17:09:48,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:09:48,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311627198] [2024-11-22 17:09:48,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:09:48,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:09:48,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:09:48,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:09:48,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:09:48,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311627198] [2024-11-22 17:09:48,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311627198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:09:48,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:09:48,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 17:09:48,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084307167] [2024-11-22 17:09:48,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:09:48,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 17:09:48,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:09:48,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 17:09:48,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 17:09:48,731 INFO L87 Difference]: Start difference. First operand has 437 states, 428 states have (on average 1.6214953271028036) internal successors, (694), 430 states have internal predecessors, (694), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:09:48,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:09:48,787 INFO L93 Difference]: Finished difference Result 871 states and 1406 transitions. [2024-11-22 17:09:48,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 17:09:48,789 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-22 17:09:48,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:09:48,798 INFO L225 Difference]: With dead ends: 871 [2024-11-22 17:09:48,798 INFO L226 Difference]: Without dead ends: 398 [2024-11-22 17:09:48,803 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 [2024-11-22 17:09:48,805 INFO L432 NwaCegarLoop]: 627 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 17:09:48,806 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 17:09:48,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2024-11-22 17:09:48,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2024-11-22 17:09:48,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 390 states have (on average 1.4461538461538461) internal successors, (564), 391 states have internal predecessors, (564), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 17:09:48,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 574 transitions. [2024-11-22 17:09:48,890 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 574 transitions. Word has length 12 [2024-11-22 17:09:48,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:09:48,891 INFO L471 AbstractCegarLoop]: Abstraction has 398 states and 574 transitions. [2024-11-22 17:09:48,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:09:48,891 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 574 transitions. [2024-11-22 17:09:48,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-22 17:09:48,892 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:09:48,892 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:09:48,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 17:09:48,892 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:09:48,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:09:48,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1025747970, now seen corresponding path program 1 times [2024-11-22 17:09:48,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:09:48,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077436966] [2024-11-22 17:09:48,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:09:48,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:09:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:09:49,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:09:49,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:09:49,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077436966] [2024-11-22 17:09:49,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077436966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:09:49,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:09:49,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 17:09:49,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043137253] [2024-11-22 17:09:49,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:09:49,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 17:09:49,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:09:49,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 17:09:49,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 17:09:49,048 INFO L87 Difference]: Start difference. First operand 398 states and 574 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:09:49,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:09:49,271 INFO L93 Difference]: Finished difference Result 1089 states and 1589 transitions. [2024-11-22 17:09:49,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 17:09:49,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-22 17:09:49,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:09:49,275 INFO L225 Difference]: With dead ends: 1089 [2024-11-22 17:09:49,275 INFO L226 Difference]: Without dead ends: 692 [2024-11-22 17:09:49,276 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 [2024-11-22 17:09:49,277 INFO L432 NwaCegarLoop]: 563 mSDtfsCounter, 431 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 17:09:49,277 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 1642 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 17:09:49,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2024-11-22 17:09:49,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 691. [2024-11-22 17:09:49,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 682 states have (on average 1.466275659824047) internal successors, (1000), 684 states have internal predecessors, (1000), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-22 17:09:49,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2024-11-22 17:09:49,309 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 14 [2024-11-22 17:09:49,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:09:49,310 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2024-11-22 17:09:49,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:09:49,310 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2024-11-22 17:09:49,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-22 17:09:49,313 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:09:49,313 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] [2024-11-22 17:09:49,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 17:09:49,313 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:09:49,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:09:49,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1308050195, now seen corresponding path program 1 times [2024-11-22 17:09:49,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:09:49,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746408257] [2024-11-22 17:09:49,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:09:49,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:09:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:09:49,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:09:49,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:09:49,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746408257] [2024-11-22 17:09:49,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746408257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:09:49,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:09:49,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 17:09:49,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871785484] [2024-11-22 17:09:49,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:09:49,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 17:09:49,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:09:49,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 17:09:49,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 17:09:49,476 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:09:49,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:09:49,560 INFO L93 Difference]: Finished difference Result 963 states and 1402 transitions. [2024-11-22 17:09:49,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 17:09:49,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-22 17:09:49,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:09:49,565 INFO L225 Difference]: With dead ends: 963 [2024-11-22 17:09:49,565 INFO L226 Difference]: Without dead ends: 607 [2024-11-22 17:09:49,566 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 17:09:49,567 INFO L432 NwaCegarLoop]: 472 mSDtfsCounter, 30 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 17:09:49,570 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1397 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 17:09:49,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2024-11-22 17:09:49,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2024-11-22 17:09:49,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 598 states have (on average 1.414715719063545) internal successors, (846), 600 states have internal predecessors, (846), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-22 17:09:49,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 858 transitions. [2024-11-22 17:09:49,601 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 858 transitions. Word has length 68 [2024-11-22 17:09:49,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:09:49,601 INFO L471 AbstractCegarLoop]: Abstraction has 607 states and 858 transitions. [2024-11-22 17:09:49,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:09:49,601 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 858 transitions. [2024-11-22 17:09:49,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-22 17:09:49,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:09:49,603 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] [2024-11-22 17:09:49,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 17:09:49,607 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:09:49,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:09:49,608 INFO L85 PathProgramCache]: Analyzing trace with hash 753154847, now seen corresponding path program 1 times [2024-11-22 17:09:49,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:09:49,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431245729] [2024-11-22 17:09:49,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:09:49,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:09:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:09:49,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 17:09:49,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:09:49,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431245729] [2024-11-22 17:09:49,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431245729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:09:49,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:09:49,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 17:09:49,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100635794] [2024-11-22 17:09:49,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:09:49,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 17:09:49,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:09:49,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 17:09:49,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 17:09:49,955 INFO L87 Difference]: Start difference. First operand 607 states and 858 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:09:50,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:09:50,089 INFO L93 Difference]: Finished difference Result 1122 states and 1555 transitions. [2024-11-22 17:09:50,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 17:09:50,089 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-22 17:09:50,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:09:50,092 INFO L225 Difference]: With dead ends: 1122 [2024-11-22 17:09:50,092 INFO L226 Difference]: Without dead ends: 847 [2024-11-22 17:09:50,093 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 17:09:50,094 INFO L432 NwaCegarLoop]: 521 mSDtfsCounter, 465 mSDsluCounter, 2479 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 3000 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 17:09:50,094 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 3000 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 17:09:50,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2024-11-22 17:09:50,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 606. [2024-11-22 17:09:50,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 597 states have (on average 1.4137353433835846) internal successors, (844), 599 states have internal predecessors, (844), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-22 17:09:50,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 856 transitions. [2024-11-22 17:09:50,108 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 856 transitions. Word has length 68 [2024-11-22 17:09:50,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:09:50,109 INFO L471 AbstractCegarLoop]: Abstraction has 606 states and 856 transitions. [2024-11-22 17:09:50,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 17:09:50,109 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 856 transitions. [2024-11-22 17:09:50,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-22 17:09:50,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:09:50,111 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:09:50,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 17:09:50,111 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:09:50,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:09:50,112 INFO L85 PathProgramCache]: Analyzing trace with hash 355503232, now seen corresponding path program 1 times [2024-11-22 17:09:50,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:09:50,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924130213] [2024-11-22 17:09:50,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:09:50,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:09:50,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:09:50,367 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 17:09:50,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:09:50,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924130213] [2024-11-22 17:09:50,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924130213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:09:50,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:09:50,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 17:09:50,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073469774] [2024-11-22 17:09:50,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:09:50,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 17:09:50,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:09:50,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 17:09:50,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 17:09:50,372 INFO L87 Difference]: Start difference. First operand 606 states and 856 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 17:09:50,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:09:50,445 INFO L93 Difference]: Finished difference Result 1118 states and 1570 transitions. [2024-11-22 17:09:50,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 17:09:50,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 105 [2024-11-22 17:09:50,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:09:50,448 INFO L225 Difference]: With dead ends: 1118 [2024-11-22 17:09:50,448 INFO L226 Difference]: Without dead ends: 522 [2024-11-22 17:09:50,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 17:09:50,451 INFO L432 NwaCegarLoop]: 389 mSDtfsCounter, 30 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 17:09:50,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1148 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 17:09:50,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2024-11-22 17:09:50,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 522. [2024-11-22 17:09:50,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 513 states have (on average 1.345029239766082) internal successors, (690), 515 states have internal predecessors, (690), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-22 17:09:50,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 702 transitions. [2024-11-22 17:09:50,466 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 702 transitions. Word has length 105 [2024-11-22 17:09:50,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:09:50,467 INFO L471 AbstractCegarLoop]: Abstraction has 522 states and 702 transitions. [2024-11-22 17:09:50,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 17:09:50,468 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 702 transitions. [2024-11-22 17:09:50,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-22 17:09:50,468 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:09:50,468 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:09:50,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 17:09:50,469 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:09:50,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:09:50,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1095820404, now seen corresponding path program 1 times [2024-11-22 17:09:50,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:09:50,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377973560] [2024-11-22 17:09:50,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:09:50,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:09:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:09:50,661 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 17:09:50,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:09:50,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377973560] [2024-11-22 17:09:50,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377973560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:09:50,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:09:50,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 17:09:50,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497252768] [2024-11-22 17:09:50,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:09:50,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 17:09:50,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:09:50,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 17:09:50,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 17:09:50,667 INFO L87 Difference]: Start difference. First operand 522 states and 702 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 17:09:50,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:09:50,739 INFO L93 Difference]: Finished difference Result 1009 states and 1365 transitions. [2024-11-22 17:09:50,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 17:09:50,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 105 [2024-11-22 17:09:50,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:09:50,742 INFO L225 Difference]: With dead ends: 1009 [2024-11-22 17:09:50,742 INFO L226 Difference]: Without dead ends: 522 [2024-11-22 17:09:50,744 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 17:09:50,745 INFO L432 NwaCegarLoop]: 402 mSDtfsCounter, 0 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 17:09:50,747 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 782 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 17:09:50,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2024-11-22 17:09:50,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 522. [2024-11-22 17:09:50,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 513 states have (on average 1.3333333333333333) internal successors, (684), 515 states have internal predecessors, (684), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-22 17:09:50,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 696 transitions. [2024-11-22 17:09:50,758 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 696 transitions. Word has length 105 [2024-11-22 17:09:50,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:09:50,758 INFO L471 AbstractCegarLoop]: Abstraction has 522 states and 696 transitions. [2024-11-22 17:09:50,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 17:09:50,759 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 696 transitions. [2024-11-22 17:09:50,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-22 17:09:50,761 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:09:50,761 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:09:50,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 17:09:50,761 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:09:50,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:09:50,761 INFO L85 PathProgramCache]: Analyzing trace with hash 815222154, now seen corresponding path program 1 times [2024-11-22 17:09:50,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:09:50,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419909845] [2024-11-22 17:09:50,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:09:50,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:09:50,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:09:51,164 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 17:09:51,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:09:51,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419909845] [2024-11-22 17:09:51,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419909845] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:09:51,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031286134] [2024-11-22 17:09:51,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:09:51,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:09:51,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:09:51,171 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 17:09:51,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 17:09:51,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:09:51,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-22 17:09:51,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:09:51,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 17:09:51,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2024-11-22 17:09:52,354 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 17:09:52,354 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 17:09:52,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031286134] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:09:52,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 17:09:52,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [4] total 13 [2024-11-22 17:09:52,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065653836] [2024-11-22 17:09:52,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:09:52,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 17:09:52,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:09:52,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 17:09:52,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-22 17:09:52,357 INFO L87 Difference]: Start difference. First operand 522 states and 696 transitions. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 17:09:53,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:09:53,511 INFO L93 Difference]: Finished difference Result 1242 states and 1672 transitions. [2024-11-22 17:09:53,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 17:09:53,512 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 105 [2024-11-22 17:09:53,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:09:53,514 INFO L225 Difference]: With dead ends: 1242 [2024-11-22 17:09:53,515 INFO L226 Difference]: Without dead ends: 765 [2024-11-22 17:09:53,515 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2024-11-22 17:09:53,516 INFO L432 NwaCegarLoop]: 386 mSDtfsCounter, 497 mSDsluCounter, 1914 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 2300 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 17:09:53,517 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 2300 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 17:09:53,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2024-11-22 17:09:53,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 522. [2024-11-22 17:09:53,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 513 states have (on average 1.331384015594542) internal successors, (683), 515 states have internal predecessors, (683), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-22 17:09:53,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 695 transitions. [2024-11-22 17:09:53,530 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 695 transitions. Word has length 105 [2024-11-22 17:09:53,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:09:53,531 INFO L471 AbstractCegarLoop]: Abstraction has 522 states and 695 transitions. [2024-11-22 17:09:53,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 11 states have internal predecessors, (97), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 17:09:53,531 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 695 transitions. [2024-11-22 17:09:53,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-22 17:09:53,532 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:09:53,532 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:09:53,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 17:09:53,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:09:53,734 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:09:53,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:09:53,734 INFO L85 PathProgramCache]: Analyzing trace with hash -500572081, now seen corresponding path program 1 times [2024-11-22 17:09:53,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:09:53,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106584812] [2024-11-22 17:09:53,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:09:53,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:09:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:09:54,086 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 17:09:54,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:09:54,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106584812] [2024-11-22 17:09:54,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106584812] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:09:54,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353593114] [2024-11-22 17:09:54,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:09:54,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:09:54,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:09:54,092 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 17:09:54,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 17:09:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:09:54,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 17:09:54,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:09:54,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 17:09:54,528 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 17:09:54,529 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 17:09:54,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353593114] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:09:54,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 17:09:54,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2024-11-22 17:09:54,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333398784] [2024-11-22 17:09:54,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:09:54,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 17:09:54,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:09:54,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 17:09:54,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-22 17:09:54,531 INFO L87 Difference]: Start difference. First operand 522 states and 695 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 17:09:54,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:09:54,604 INFO L93 Difference]: Finished difference Result 707 states and 945 transitions. [2024-11-22 17:09:54,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 17:09:54,605 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 106 [2024-11-22 17:09:54,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:09:54,607 INFO L225 Difference]: With dead ends: 707 [2024-11-22 17:09:54,608 INFO L226 Difference]: Without dead ends: 696 [2024-11-22 17:09:54,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-22 17:09:54,608 INFO L432 NwaCegarLoop]: 399 mSDtfsCounter, 483 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 17:09:54,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 1177 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 17:09:54,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2024-11-22 17:09:54,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 524. [2024-11-22 17:09:54,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 515 states have (on average 1.3300970873786409) internal successors, (685), 517 states have internal predecessors, (685), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-22 17:09:54,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 697 transitions. [2024-11-22 17:09:54,622 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 697 transitions. Word has length 106 [2024-11-22 17:09:54,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:09:54,622 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 697 transitions. [2024-11-22 17:09:54,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 17:09:54,622 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 697 transitions. [2024-11-22 17:09:54,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-22 17:09:54,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:09:54,624 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:09:54,632 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 17:09:54,827 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,SelfDestructingSolverStorable7 [2024-11-22 17:09:54,828 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:09:54,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:09:54,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1592192084, now seen corresponding path program 1 times [2024-11-22 17:09:54,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:09:54,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141548128] [2024-11-22 17:09:54,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:09:54,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:09:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:09:55,103 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 17:09:55,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:09:55,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141548128] [2024-11-22 17:09:55,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141548128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:09:55,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 17:09:55,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 17:09:55,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916714019] [2024-11-22 17:09:55,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:09:55,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 17:09:55,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:09:55,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 17:09:55,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 17:09:55,106 INFO L87 Difference]: Start difference. First operand 524 states and 697 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 17:09:55,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:09:55,397 INFO L93 Difference]: Finished difference Result 1306 states and 1752 transitions. [2024-11-22 17:09:55,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 17:09:55,398 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 160 [2024-11-22 17:09:55,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:09:55,401 INFO L225 Difference]: With dead ends: 1306 [2024-11-22 17:09:55,401 INFO L226 Difference]: Without dead ends: 874 [2024-11-22 17:09:55,402 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-22 17:09:55,402 INFO L432 NwaCegarLoop]: 505 mSDtfsCounter, 910 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 1437 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 17:09:55,402 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 1437 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 17:09:55,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2024-11-22 17:09:55,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 664. [2024-11-22 17:09:55,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 654 states have (on average 1.3363914373088686) internal successors, (874), 657 states have internal predecessors, (874), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-22 17:09:55,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 888 transitions. [2024-11-22 17:09:55,421 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 888 transitions. Word has length 160 [2024-11-22 17:09:55,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:09:55,421 INFO L471 AbstractCegarLoop]: Abstraction has 664 states and 888 transitions. [2024-11-22 17:09:55,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 17:09:55,421 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 888 transitions. [2024-11-22 17:09:55,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2024-11-22 17:09:55,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:09:55,423 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:09:55,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 17:09:55,423 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:09:55,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:09:55,423 INFO L85 PathProgramCache]: Analyzing trace with hash 404449816, now seen corresponding path program 1 times [2024-11-22 17:09:55,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:09:55,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143463388] [2024-11-22 17:09:55,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:09:55,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:09:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:09:55,801 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 17:09:55,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:09:55,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143463388] [2024-11-22 17:09:55,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143463388] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:09:55,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182216567] [2024-11-22 17:09:55,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:09:55,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:09:55,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:09:55,804 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 17:09:55,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 17:09:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:09:56,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-22 17:09:56,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:09:56,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 17:09:56,570 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 17:09:56,570 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 17:09:56,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182216567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 17:09:56,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 17:09:56,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2024-11-22 17:09:56,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674516702] [2024-11-22 17:09:56,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 17:09:56,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 17:09:56,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 17:09:56,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 17:09:56,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-22 17:09:56,573 INFO L87 Difference]: Start difference. First operand 664 states and 888 transitions. Second operand has 10 states, 10 states have (on average 16.1) internal successors, (161), 10 states have internal predecessors, (161), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 17:09:57,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 17:09:57,073 INFO L93 Difference]: Finished difference Result 1308 states and 1755 transitions. [2024-11-22 17:09:57,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 17:09:57,074 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.1) internal successors, (161), 10 states have internal predecessors, (161), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 170 [2024-11-22 17:09:57,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 17:09:57,077 INFO L225 Difference]: With dead ends: 1308 [2024-11-22 17:09:57,077 INFO L226 Difference]: Without dead ends: 896 [2024-11-22 17:09:57,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-11-22 17:09:57,079 INFO L432 NwaCegarLoop]: 450 mSDtfsCounter, 396 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 17:09:57,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 1982 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 17:09:57,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2024-11-22 17:09:57,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 699. [2024-11-22 17:09:57,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 689 states have (on average 1.3251088534107403) internal successors, (913), 692 states have internal predecessors, (913), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-22 17:09:57,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 927 transitions. [2024-11-22 17:09:57,103 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 927 transitions. Word has length 170 [2024-11-22 17:09:57,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 17:09:57,103 INFO L471 AbstractCegarLoop]: Abstraction has 699 states and 927 transitions. [2024-11-22 17:09:57,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.1) internal successors, (161), 10 states have internal predecessors, (161), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 17:09:57,104 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 927 transitions. [2024-11-22 17:09:57,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-22 17:09:57,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 17:09:57,105 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 17:09:57,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 17:09:57,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:09:57,307 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 17:09:57,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 17:09:57,308 INFO L85 PathProgramCache]: Analyzing trace with hash 105131120, now seen corresponding path program 1 times [2024-11-22 17:09:57,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 17:09:57,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169067211] [2024-11-22 17:09:57,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:09:57,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 17:09:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:09:57,688 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 17:09:57,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 17:09:57,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169067211] [2024-11-22 17:09:57,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169067211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 17:09:57,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999139371] [2024-11-22 17:09:57,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 17:09:57,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 17:09:57,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 17:09:57,691 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 17:09:57,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 17:09:58,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 17:09:58,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-22 17:09:58,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 17:10:24,562 WARN L286 SmtUtils]: Spent 6.59s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-22 17:10:33,867 WARN L286 SmtUtils]: Spent 9.30s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-22 17:10:45,901 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-22 17:11:01,968 WARN L286 SmtUtils]: Spent 12.01s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-22 17:11:16,612 WARN L286 SmtUtils]: Spent 10.23s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)