./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a379a11019678fc2a367efcf212f49fd3083d5f94e928c550866b32de723f686 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 23:04:05,859 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 23:04:05,929 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 23:04:05,936 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 23:04:05,936 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 23:04:05,961 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 23:04:05,962 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 23:04:05,962 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 23:04:05,963 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 23:04:05,965 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 23:04:05,965 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 23:04:05,965 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 23:04:05,966 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 23:04:05,966 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 23:04:05,966 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 23:04:05,967 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 23:04:05,967 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 23:04:05,967 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 23:04:05,967 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 23:04:05,968 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 23:04:05,968 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 23:04:05,973 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 23:04:05,973 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 23:04:05,973 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 23:04:05,974 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 23:04:05,974 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 23:04:05,974 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 23:04:05,974 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 23:04:05,975 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 23:04:05,975 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 23:04:05,975 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 23:04:05,975 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 23:04:05,975 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 23:04:05,976 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 23:04:05,976 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 23:04:05,977 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 23:04:05,977 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 23:04:05,977 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 23:04:05,978 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 23:04:05,978 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 23:04:05,978 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 23:04:05,978 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 23:04:05,978 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a379a11019678fc2a367efcf212f49fd3083d5f94e928c550866b32de723f686 [2024-11-16 23:04:06,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 23:04:06,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 23:04:06,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 23:04:06,238 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 23:04:06,238 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 23:04:06,239 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i [2024-11-16 23:04:07,681 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 23:04:07,974 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 23:04:07,975 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test3-1.i [2024-11-16 23:04:08,001 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/861295552/4315028e0f164df4a96348379db6efaf/FLAG1484cb1b2 [2024-11-16 23:04:08,248 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/861295552/4315028e0f164df4a96348379db6efaf [2024-11-16 23:04:08,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 23:04:08,252 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 23:04:08,253 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 23:04:08,254 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 23:04:08,259 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 23:04:08,261 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:04:08" (1/1) ... [2024-11-16 23:04:08,262 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f4058b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:08, skipping insertion in model container [2024-11-16 23:04:08,262 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:04:08" (1/1) ... [2024-11-16 23:04:08,324 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 23:04:08,760 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_SAX_test3-1.i[33021,33034] [2024-11-16 23:04:08,880 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_SAX_test3-1.i[44590,44603] [2024-11-16 23:04:08,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 23:04:08,903 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 23:04:08,945 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_SAX_test3-1.i[33021,33034] [2024-11-16 23:04:08,996 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_SAX_test3-1.i[44590,44603] [2024-11-16 23:04:09,000 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 23:04:09,048 INFO L204 MainTranslator]: Completed translation [2024-11-16 23:04:09,049 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:09 WrapperNode [2024-11-16 23:04:09,049 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 23:04:09,051 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 23:04:09,051 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 23:04:09,051 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 23:04:09,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:09" (1/1) ... [2024-11-16 23:04:09,099 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:09" (1/1) ... [2024-11-16 23:04:09,189 INFO L138 Inliner]: procedures = 177, calls = 277, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1420 [2024-11-16 23:04:09,190 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 23:04:09,194 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 23:04:09,195 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 23:04:09,195 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 23:04:09,207 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:09" (1/1) ... [2024-11-16 23:04:09,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:09" (1/1) ... [2024-11-16 23:04:09,220 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:09" (1/1) ... [2024-11-16 23:04:09,311 INFO L175 MemorySlicer]: Split 255 memory accesses to 3 slices as follows [2, 34, 219]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 4, 50]. [2024-11-16 23:04:09,312 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:09" (1/1) ... [2024-11-16 23:04:09,312 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:09" (1/1) ... [2024-11-16 23:04:09,348 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:09" (1/1) ... [2024-11-16 23:04:09,351 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:09" (1/1) ... [2024-11-16 23:04:09,358 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:09" (1/1) ... [2024-11-16 23:04:09,368 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:09" (1/1) ... [2024-11-16 23:04:09,385 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 23:04:09,386 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 23:04:09,386 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 23:04:09,387 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 23:04:09,387 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:09" (1/1) ... [2024-11-16 23:04:09,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 23:04:09,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:04:09,429 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) [2024-11-16 23:04:09,439 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 [2024-11-16 23:04:09,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 23:04:09,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 23:04:09,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 23:04:09,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-16 23:04:09,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-16 23:04:09,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 23:04:09,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 23:04:09,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 23:04:09,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-16 23:04:09,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-16 23:04:09,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-16 23:04:09,486 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-16 23:04:09,486 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-16 23:04:09,486 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-16 23:04:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 23:04:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 23:04:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-16 23:04:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-16 23:04:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-16 23:04:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 23:04:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-16 23:04:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-16 23:04:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-16 23:04:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 23:04:09,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 23:04:09,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 23:04:09,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 23:04:09,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 23:04:09,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 23:04:09,694 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 23:04:09,697 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 23:04:10,899 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L733: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2024-11-16 23:04:11,000 INFO L? ?]: Removed 322 outVars from TransFormulas that were not future-live. [2024-11-16 23:04:11,000 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 23:04:11,095 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 23:04:11,096 INFO L336 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-16 23:04:11,096 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 11:04:11 BoogieIcfgContainer [2024-11-16 23:04:11,096 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 23:04:11,100 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 23:04:11,100 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 23:04:11,104 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 23:04:11,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:04:08" (1/3) ... [2024-11-16 23:04:11,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a374ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:04:11, skipping insertion in model container [2024-11-16 23:04:11,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:09" (2/3) ... [2024-11-16 23:04:11,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a374ec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:04:11, skipping insertion in model container [2024-11-16 23:04:11,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 11:04:11" (3/3) ... [2024-11-16 23:04:11,106 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test3-1.i [2024-11-16 23:04:11,125 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 23:04:11,125 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 23:04:11,218 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 23:04:11,225 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;@5791de5a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 23:04:11,226 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-16 23:04:11,232 INFO L276 IsEmpty]: Start isEmpty. Operand has 416 states, 403 states have (on average 1.617866004962779) internal successors, (652), 410 states have internal predecessors, (652), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-16 23:04:11,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-16 23:04:11,237 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:04:11,238 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:04:11,238 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:04:11,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:04:11,242 INFO L85 PathProgramCache]: Analyzing trace with hash -760840493, now seen corresponding path program 1 times [2024-11-16 23:04:11,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:04:11,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996924274] [2024-11-16 23:04:11,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:04:11,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:04:11,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:04:11,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:04:11,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:04:11,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996924274] [2024-11-16 23:04:11,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996924274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:04:11,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:04:11,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 23:04:11,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040684015] [2024-11-16 23:04:11,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:04:11,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 23:04:11,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:04:11,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 23:04:11,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 23:04:11,473 INFO L87 Difference]: Start difference. First operand has 416 states, 403 states have (on average 1.617866004962779) internal successors, (652), 410 states have internal predecessors, (652), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:04:11,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:04:11,617 INFO L93 Difference]: Finished difference Result 830 states and 1339 transitions. [2024-11-16 23:04:11,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 23:04:11,620 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-16 23:04:11,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:04:11,637 INFO L225 Difference]: With dead ends: 830 [2024-11-16 23:04:11,637 INFO L226 Difference]: Without dead ends: 412 [2024-11-16 23:04:11,642 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 [2024-11-16 23:04:11,645 INFO L432 NwaCegarLoop]: 557 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 23:04:11,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 557 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 23:04:11,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2024-11-16 23:04:11,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2024-11-16 23:04:11,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 400 states have (on average 1.4475) internal successors, (579), 406 states have internal predecessors, (579), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-16 23:04:11,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 595 transitions. [2024-11-16 23:04:11,707 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 595 transitions. Word has length 9 [2024-11-16 23:04:11,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:04:11,708 INFO L471 AbstractCegarLoop]: Abstraction has 412 states and 595 transitions. [2024-11-16 23:04:11,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:04:11,708 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 595 transitions. [2024-11-16 23:04:11,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-16 23:04:11,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:04:11,710 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:04:11,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 23:04:11,711 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:04:11,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:04:11,711 INFO L85 PathProgramCache]: Analyzing trace with hash 856882925, now seen corresponding path program 1 times [2024-11-16 23:04:11,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:04:11,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737581438] [2024-11-16 23:04:11,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:04:11,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:04:11,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:04:11,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:04:11,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:04:11,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737581438] [2024-11-16 23:04:11,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737581438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:04:11,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:04:11,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 23:04:11,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986210782] [2024-11-16 23:04:11,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:04:11,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 23:04:11,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:04:11,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 23:04:11,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 23:04:11,965 INFO L87 Difference]: Start difference. First operand 412 states and 595 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2024-11-16 23:04:12,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:04:12,310 INFO L93 Difference]: Finished difference Result 1020 states and 1482 transitions. [2024-11-16 23:04:12,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 23:04:12,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 15 [2024-11-16 23:04:12,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:04:12,317 INFO L225 Difference]: With dead ends: 1020 [2024-11-16 23:04:12,317 INFO L226 Difference]: Without dead ends: 811 [2024-11-16 23:04:12,319 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 [2024-11-16 23:04:12,320 INFO L432 NwaCegarLoop]: 536 mSDtfsCounter, 564 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 23:04:12,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 1595 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 23:04:12,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2024-11-16 23:04:12,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 414. [2024-11-16 23:04:12,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 402 states have (on average 1.445273631840796) internal successors, (581), 408 states have internal predecessors, (581), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-16 23:04:12,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 597 transitions. [2024-11-16 23:04:12,367 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 597 transitions. Word has length 15 [2024-11-16 23:04:12,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:04:12,367 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 597 transitions. [2024-11-16 23:04:12,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2024-11-16 23:04:12,367 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 597 transitions. [2024-11-16 23:04:12,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-16 23:04:12,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:04:12,373 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:04:12,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 23:04:12,374 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:04:12,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:04:12,377 INFO L85 PathProgramCache]: Analyzing trace with hash 673248852, now seen corresponding path program 1 times [2024-11-16 23:04:12,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:04:12,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198582467] [2024-11-16 23:04:12,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:04:12,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:04:12,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:04:12,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:04:12,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:04:12,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198582467] [2024-11-16 23:04:12,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198582467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:04:12,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:04:12,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 23:04:12,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021895383] [2024-11-16 23:04:12,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:04:12,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 23:04:12,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:04:12,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 23:04:12,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 23:04:12,856 INFO L87 Difference]: Start difference. First operand 414 states and 597 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2024-11-16 23:04:13,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:04:13,037 INFO L93 Difference]: Finished difference Result 782 states and 1124 transitions. [2024-11-16 23:04:13,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 23:04:13,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 92 [2024-11-16 23:04:13,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:04:13,040 INFO L225 Difference]: With dead ends: 782 [2024-11-16 23:04:13,041 INFO L226 Difference]: Without dead ends: 372 [2024-11-16 23:04:13,042 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 [2024-11-16 23:04:13,043 INFO L432 NwaCegarLoop]: 460 mSDtfsCounter, 30 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1360 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 23:04:13,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1360 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 23:04:13,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-11-16 23:04:13,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2024-11-16 23:04:13,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 360 states have (on average 1.4) internal successors, (504), 366 states have internal predecessors, (504), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-16 23:04:13,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 520 transitions. [2024-11-16 23:04:13,066 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 520 transitions. Word has length 92 [2024-11-16 23:04:13,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:04:13,068 INFO L471 AbstractCegarLoop]: Abstraction has 372 states and 520 transitions. [2024-11-16 23:04:13,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2024-11-16 23:04:13,068 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 520 transitions. [2024-11-16 23:04:13,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-16 23:04:13,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:04:13,073 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:04:13,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 23:04:13,074 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:04:13,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:04:13,075 INFO L85 PathProgramCache]: Analyzing trace with hash -751376851, now seen corresponding path program 1 times [2024-11-16 23:04:13,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:04:13,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493389261] [2024-11-16 23:04:13,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:04:13,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:04:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:04:13,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:04:13,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:04:13,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493389261] [2024-11-16 23:04:13,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493389261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:04:13,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:04:13,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 23:04:13,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311497202] [2024-11-16 23:04:13,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:04:13,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 23:04:13,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:04:13,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 23:04:13,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 23:04:13,298 INFO L87 Difference]: Start difference. First operand 372 states and 520 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2024-11-16 23:04:13,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:04:13,500 INFO L93 Difference]: Finished difference Result 993 states and 1399 transitions. [2024-11-16 23:04:13,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 23:04:13,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 92 [2024-11-16 23:04:13,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:04:13,504 INFO L225 Difference]: With dead ends: 993 [2024-11-16 23:04:13,506 INFO L226 Difference]: Without dead ends: 625 [2024-11-16 23:04:13,508 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 23:04:13,509 INFO L432 NwaCegarLoop]: 648 mSDtfsCounter, 296 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-16 23:04:13,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 1103 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-16 23:04:13,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2024-11-16 23:04:13,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 621. [2024-11-16 23:04:13,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 609 states have (on average 1.4154351395730707) internal successors, (862), 615 states have internal predecessors, (862), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-16 23:04:13,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 878 transitions. [2024-11-16 23:04:13,533 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 878 transitions. Word has length 92 [2024-11-16 23:04:13,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:04:13,535 INFO L471 AbstractCegarLoop]: Abstraction has 621 states and 878 transitions. [2024-11-16 23:04:13,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2024-11-16 23:04:13,535 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 878 transitions. [2024-11-16 23:04:13,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-16 23:04:13,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:04:13,542 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] [2024-11-16 23:04:13,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 23:04:13,542 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:04:13,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:04:13,543 INFO L85 PathProgramCache]: Analyzing trace with hash 476259006, now seen corresponding path program 1 times [2024-11-16 23:04:13,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:04:13,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037287281] [2024-11-16 23:04:13,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:04:13,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:04:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:04:13,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 23:04:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:04:14,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-16 23:04:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:04:14,009 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 23:04:14,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:04:14,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037287281] [2024-11-16 23:04:14,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037287281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:04:14,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:04:14,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 23:04:14,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021641931] [2024-11-16 23:04:14,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:04:14,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 23:04:14,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:04:14,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 23:04:14,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 23:04:14,015 INFO L87 Difference]: Start difference. First operand 621 states and 878 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 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) [2024-11-16 23:04:14,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:04:14,481 INFO L93 Difference]: Finished difference Result 926 states and 1315 transitions. [2024-11-16 23:04:14,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 23:04:14,482 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 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 107 [2024-11-16 23:04:14,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:04:14,487 INFO L225 Difference]: With dead ends: 926 [2024-11-16 23:04:14,487 INFO L226 Difference]: Without dead ends: 905 [2024-11-16 23:04:14,488 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:04:14,490 INFO L432 NwaCegarLoop]: 454 mSDtfsCounter, 470 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 23:04:14,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 1718 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 23:04:14,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2024-11-16 23:04:14,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 623. [2024-11-16 23:04:14,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 611 states have (on average 1.414075286415712) internal successors, (864), 617 states have internal predecessors, (864), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-16 23:04:14,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 880 transitions. [2024-11-16 23:04:14,545 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 880 transitions. Word has length 107 [2024-11-16 23:04:14,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:04:14,547 INFO L471 AbstractCegarLoop]: Abstraction has 623 states and 880 transitions. [2024-11-16 23:04:14,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 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) [2024-11-16 23:04:14,547 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 880 transitions. [2024-11-16 23:04:14,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-16 23:04:14,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:04:14,551 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] [2024-11-16 23:04:14,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 23:04:14,552 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:04:14,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:04:14,552 INFO L85 PathProgramCache]: Analyzing trace with hash 655584747, now seen corresponding path program 1 times [2024-11-16 23:04:14,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:04:14,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060620434] [2024-11-16 23:04:14,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:04:14,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:04:14,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:04:14,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 23:04:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:04:14,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-16 23:04:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:04:14,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 23:04:14,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:04:14,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060620434] [2024-11-16 23:04:14,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060620434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:04:14,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:04:14,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 23:04:14,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155517252] [2024-11-16 23:04:14,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:04:14,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 23:04:14,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:04:14,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 23:04:14,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 23:04:14,908 INFO L87 Difference]: Start difference. First operand 623 states and 880 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:04:15,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:04:15,313 INFO L93 Difference]: Finished difference Result 911 states and 1296 transitions. [2024-11-16 23:04:15,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 23:04:15,314 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 157 [2024-11-16 23:04:15,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:04:15,317 INFO L225 Difference]: With dead ends: 911 [2024-11-16 23:04:15,318 INFO L226 Difference]: Without dead ends: 542 [2024-11-16 23:04:15,319 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:04:15,320 INFO L432 NwaCegarLoop]: 380 mSDtfsCounter, 38 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1407 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 23:04:15,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1407 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 23:04:15,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2024-11-16 23:04:15,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 539. [2024-11-16 23:04:15,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 527 states have (on average 1.3472485768500948) internal successors, (710), 533 states have internal predecessors, (710), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-16 23:04:15,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 726 transitions. [2024-11-16 23:04:15,339 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 726 transitions. Word has length 157 [2024-11-16 23:04:15,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:04:15,339 INFO L471 AbstractCegarLoop]: Abstraction has 539 states and 726 transitions. [2024-11-16 23:04:15,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:04:15,340 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 726 transitions. [2024-11-16 23:04:15,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-16 23:04:15,342 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:04:15,342 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] [2024-11-16 23:04:15,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 23:04:15,343 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:04:15,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:04:15,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1531407684, now seen corresponding path program 1 times [2024-11-16 23:04:15,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:04:15,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688950473] [2024-11-16 23:04:15,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:04:15,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:04:15,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:04:15,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 23:04:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:04:15,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-16 23:04:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:04:15,669 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 23:04:15,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:04:15,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688950473] [2024-11-16 23:04:15,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688950473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:04:15,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:04:15,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 23:04:15,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289923692] [2024-11-16 23:04:15,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:04:15,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 23:04:15,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:04:15,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 23:04:15,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:04:15,673 INFO L87 Difference]: Start difference. First operand 539 states and 726 transitions. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:04:16,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:04:16,333 INFO L93 Difference]: Finished difference Result 1352 states and 1830 transitions. [2024-11-16 23:04:16,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 23:04:16,334 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 157 [2024-11-16 23:04:16,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:04:16,338 INFO L225 Difference]: With dead ends: 1352 [2024-11-16 23:04:16,339 INFO L226 Difference]: Without dead ends: 905 [2024-11-16 23:04:16,340 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-16 23:04:16,341 INFO L432 NwaCegarLoop]: 481 mSDtfsCounter, 939 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 1843 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 23:04:16,341 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 1843 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 23:04:16,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2024-11-16 23:04:16,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 680. [2024-11-16 23:04:16,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 668 states have (on average 1.348802395209581) internal successors, (901), 674 states have internal predecessors, (901), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-16 23:04:16,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 917 transitions. [2024-11-16 23:04:16,384 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 917 transitions. Word has length 157 [2024-11-16 23:04:16,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:04:16,384 INFO L471 AbstractCegarLoop]: Abstraction has 680 states and 917 transitions. [2024-11-16 23:04:16,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-16 23:04:16,385 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 917 transitions. [2024-11-16 23:04:16,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-16 23:04:16,386 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:04:16,387 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] [2024-11-16 23:04:16,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 23:04:16,387 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:04:16,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:04:16,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1297205156, now seen corresponding path program 1 times [2024-11-16 23:04:16,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:04:16,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117674156] [2024-11-16 23:04:16,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:04:16,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:04:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:04:17,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 23:04:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:04:17,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-16 23:04:17,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:04:17,189 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 23:04:17,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:04:17,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117674156] [2024-11-16 23:04:17,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117674156] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:04:17,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810789178] [2024-11-16 23:04:17,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:04:17,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:04:17,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:04:17,193 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) [2024-11-16 23:04:17,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 23:04:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:04:17,548 INFO L255 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 23:04:17,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:04:17,603 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 [2024-11-16 23:04:17,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-16 23:04:17,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-16 23:04:17,902 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 23:04:17,902 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 23:04:18,117 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 23:04:18,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810789178] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 23:04:18,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 23:04:18,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 5] total 12 [2024-11-16 23:04:18,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541472591] [2024-11-16 23:04:18,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 23:04:18,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-16 23:04:18,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:04:18,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-16 23:04:18,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-16 23:04:18,125 INFO L87 Difference]: Start difference. First operand 680 states and 917 transitions. Second operand has 12 states, 12 states have (on average 27.666666666666668) internal successors, (332), 11 states have internal predecessors, (332), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-16 23:04:18,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:04:18,971 INFO L93 Difference]: Finished difference Result 2199 states and 2975 transitions. [2024-11-16 23:04:18,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-16 23:04:18,972 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 27.666666666666668) internal successors, (332), 11 states have internal predecessors, (332), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 168 [2024-11-16 23:04:18,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:04:18,979 INFO L225 Difference]: With dead ends: 2199 [2024-11-16 23:04:18,980 INFO L226 Difference]: Without dead ends: 1770 [2024-11-16 23:04:18,981 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 333 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2024-11-16 23:04:18,982 INFO L432 NwaCegarLoop]: 428 mSDtfsCounter, 1112 mSDsluCounter, 3331 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 3759 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 23:04:18,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1125 Valid, 3759 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 23:04:18,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2024-11-16 23:04:19,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1032. [2024-11-16 23:04:19,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1032 states, 1016 states have (on average 1.3415354330708662) internal successors, (1363), 1022 states have internal predecessors, (1363), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-16 23:04:19,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1385 transitions. [2024-11-16 23:04:19,037 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1385 transitions. Word has length 168 [2024-11-16 23:04:19,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:04:19,038 INFO L471 AbstractCegarLoop]: Abstraction has 1032 states and 1385 transitions. [2024-11-16 23:04:19,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.666666666666668) internal successors, (332), 11 states have internal predecessors, (332), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-16 23:04:19,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1385 transitions. [2024-11-16 23:04:19,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2024-11-16 23:04:19,043 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:04:19,044 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2024-11-16 23:04:19,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 23:04:19,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:04:19,249 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:04:19,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:04:19,249 INFO L85 PathProgramCache]: Analyzing trace with hash -985156962, now seen corresponding path program 1 times [2024-11-16 23:04:19,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:04:19,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359877742] [2024-11-16 23:04:19,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:04:19,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:04:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:04:23,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 23:04:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:04:23,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-16 23:04:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:04:23,102 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 464 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 23:04:23,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:04:23,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359877742] [2024-11-16 23:04:23,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359877742] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:04:23,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062493905] [2024-11-16 23:04:23,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:04:23,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:04:23,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:04:23,106 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) [2024-11-16 23:04:23,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 23:04:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:04:23,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 1904 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 23:04:23,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:04:23,833 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 [2024-11-16 23:04:24,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-16 23:04:24,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-16 23:04:24,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-16 23:04:24,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-16 23:04:24,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-16 23:04:24,390 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 464 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 23:04:24,391 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 23:04:24,978 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 464 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-16 23:04:24,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062493905] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 23:04:24,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 23:04:24,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 8] total 21 [2024-11-16 23:04:24,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685404611] [2024-11-16 23:04:24,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 23:04:24,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-16 23:04:24,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:04:24,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-16 23:04:24,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=274, Unknown=0, NotChecked=0, Total=420 [2024-11-16 23:04:24,983 INFO L87 Difference]: Start difference. First operand 1032 states and 1385 transitions. Second operand has 21 states, 21 states have (on average 38.095238095238095) internal successors, (800), 20 states have internal predecessors, (800), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-16 23:04:26,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 23:04:26,446 INFO L93 Difference]: Finished difference Result 4335 states and 5879 transitions. [2024-11-16 23:04:26,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-16 23:04:26,447 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 38.095238095238095) internal successors, (800), 20 states have internal predecessors, (800), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 399 [2024-11-16 23:04:26,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 23:04:26,463 INFO L225 Difference]: With dead ends: 4335 [2024-11-16 23:04:26,464 INFO L226 Difference]: Without dead ends: 3906 [2024-11-16 23:04:26,467 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 823 GetRequests, 794 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=229, Invalid=527, Unknown=0, NotChecked=0, Total=756 [2024-11-16 23:04:26,470 INFO L432 NwaCegarLoop]: 431 mSDtfsCounter, 5200 mSDsluCounter, 4653 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5240 SdHoareTripleChecker+Valid, 5084 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-16 23:04:26,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5240 Valid, 5084 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-16 23:04:26,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3906 states. [2024-11-16 23:04:26,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3906 to 1908. [2024-11-16 23:04:26,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1908 states, 1886 states have (on average 1.3366914103923648) internal successors, (2521), 1892 states have internal predecessors, (2521), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-16 23:04:26,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 2555 transitions. [2024-11-16 23:04:26,558 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 2555 transitions. Word has length 399 [2024-11-16 23:04:26,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 23:04:26,559 INFO L471 AbstractCegarLoop]: Abstraction has 1908 states and 2555 transitions. [2024-11-16 23:04:26,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 38.095238095238095) internal successors, (800), 20 states have internal predecessors, (800), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-16 23:04:26,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 2555 transitions. [2024-11-16 23:04:26,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 862 [2024-11-16 23:04:26,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 23:04:26,578 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 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] [2024-11-16 23:04:26,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 23:04:26,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-16 23:04:26,784 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 23:04:26,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:04:26,784 INFO L85 PathProgramCache]: Analyzing trace with hash -7589666, now seen corresponding path program 2 times [2024-11-16 23:04:26,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:04:26,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605401332] [2024-11-16 23:04:26,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:04:26,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms