./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 d993ff45e37665d9abd93530677e1201b0648bf8ee13fa84b0c68926f580d988 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 16:38:58,184 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 16:38:58,253 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 16:38:58,258 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 16:38:58,258 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 16:38:58,284 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 16:38:58,286 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 16:38:58,287 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 16:38:58,287 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 16:38:58,290 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 16:38:58,290 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 16:38:58,290 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 16:38:58,291 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 16:38:58,292 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 16:38:58,292 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 16:38:58,292 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 16:38:58,296 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 16:38:58,297 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 16:38:58,297 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 16:38:58,297 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 16:38:58,297 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 16:38:58,298 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 16:38:58,299 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 16:38:58,299 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 16:38:58,299 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 16:38:58,300 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 16:38:58,300 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 16:38:58,300 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 16:38:58,301 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 16:38:58,301 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 16:38:58,301 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 16:38:58,301 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 16:38:58,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 16:38:58,302 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 16:38:58,302 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 16:38:58,303 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 16:38:58,303 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 16:38:58,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 16:38:58,320 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 16:38:58,320 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 16:38:58,320 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 16:38:58,321 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 16:38:58,321 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d993ff45e37665d9abd93530677e1201b0648bf8ee13fa84b0c68926f580d988 [2024-10-11 16:38:58,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 16:38:58,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 16:38:58,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 16:38:58,626 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 16:38:58,627 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 16:38:58,628 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i [2024-10-11 16:39:00,151 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 16:39:00,552 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 16:39:00,554 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i [2024-10-11 16:39:00,590 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/bf3ed86b9/ae51f200d6a040e7a1bc345e587347e8/FLAGf5196a028 [2024-10-11 16:39:00,607 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/bf3ed86b9/ae51f200d6a040e7a1bc345e587347e8 [2024-10-11 16:39:00,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 16:39:00,613 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 16:39:00,616 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 16:39:00,616 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 16:39:00,621 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 16:39:00,622 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:39:00" (1/1) ... [2024-10-11 16:39:00,625 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74c7daa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:39:00, skipping insertion in model container [2024-10-11 16:39:00,626 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:39:00" (1/1) ... [2024-10-11 16:39:00,689 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 16:39:01,156 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i[33021,33034] [2024-10-11 16:39:01,396 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i[84583,84596] [2024-10-11 16:39:01,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 16:39:01,426 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 16:39:01,506 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i[33021,33034] [2024-10-11 16:39:01,636 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-2.i[84583,84596] [2024-10-11 16:39:01,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 16:39:01,696 INFO L204 MainTranslator]: Completed translation [2024-10-11 16:39:01,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:39:01 WrapperNode [2024-10-11 16:39:01,697 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 16:39:01,698 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 16:39:01,699 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 16:39:01,699 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 16:39:01,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:39:01" (1/1) ... [2024-10-11 16:39:01,749 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:39:01" (1/1) ... [2024-10-11 16:39:01,854 INFO L138 Inliner]: procedures = 177, calls = 773, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3448 [2024-10-11 16:39:01,855 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 16:39:01,857 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 16:39:01,857 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 16:39:01,857 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 16:39:01,868 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:39:01" (1/1) ... [2024-10-11 16:39:01,868 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:39:01" (1/1) ... [2024-10-11 16:39:01,891 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:39:01" (1/1) ... [2024-10-11 16:39:01,986 INFO L175 MemorySlicer]: Split 256 memory accesses to 3 slices as follows [2, 220, 34]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 50, 4]. [2024-10-11 16:39:01,987 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:39:01" (1/1) ... [2024-10-11 16:39:01,987 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:39:01" (1/1) ... [2024-10-11 16:39:02,037 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:39:01" (1/1) ... [2024-10-11 16:39:02,074 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:39:01" (1/1) ... [2024-10-11 16:39:02,087 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:39:01" (1/1) ... [2024-10-11 16:39:02,103 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:39:01" (1/1) ... [2024-10-11 16:39:02,125 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 16:39:02,127 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 16:39:02,127 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 16:39:02,127 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 16:39:02,128 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:39:01" (1/1) ... [2024-10-11 16:39:02,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 16:39:02,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:39:02,165 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 16:39:02,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 16:39:02,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 16:39:02,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 16:39:02,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-11 16:39:02,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-11 16:39:02,224 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-11 16:39:02,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 16:39:02,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 16:39:02,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-11 16:39:02,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-11 16:39:02,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-11 16:39:02,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-10-11 16:39:02,226 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-11 16:39:02,226 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-11 16:39:02,226 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-10-11 16:39:02,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 16:39:02,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 16:39:02,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-11 16:39:02,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-11 16:39:02,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-11 16:39:02,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 16:39:02,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-11 16:39:02,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-11 16:39:02,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-11 16:39:02,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 16:39:02,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 16:39:02,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 16:39:02,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 16:39:02,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 16:39:02,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 16:39:02,483 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 16:39:02,486 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 16:39:05,349 INFO L? ?]: Removed 824 outVars from TransFormulas that were not future-live. [2024-10-11 16:39:05,349 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 16:39:05,424 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 16:39:05,425 INFO L314 CfgBuilder]: Removed 63 assume(true) statements. [2024-10-11 16:39:05,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:39:05 BoogieIcfgContainer [2024-10-11 16:39:05,425 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 16:39:05,428 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 16:39:05,428 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 16:39:05,432 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 16:39:05,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 04:39:00" (1/3) ... [2024-10-11 16:39:05,433 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c13f516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:39:05, skipping insertion in model container [2024-10-11 16:39:05,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:39:01" (2/3) ... [2024-10-11 16:39:05,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c13f516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:39:05, skipping insertion in model container [2024-10-11 16:39:05,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:39:05" (3/3) ... [2024-10-11 16:39:05,436 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test9-2.i [2024-10-11 16:39:05,454 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 16:39:05,455 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 16:39:05,583 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:39:05,590 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;@1989f2eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:39:05,590 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-11 16:39:05,601 INFO L276 IsEmpty]: Start isEmpty. Operand has 1400 states, 892 states have (on average 1.836322869955157) internal successors, (1638), 1394 states have internal predecessors, (1638), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2024-10-11 16:39:05,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-11 16:39:05,608 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:39:05,609 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:39:05,609 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:39:05,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:39:05,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1216099773, now seen corresponding path program 1 times [2024-10-11 16:39:05,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:39:05,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498880056] [2024-10-11 16:39:05,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:39:05,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:39:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:39:05,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:39:05,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:39:05,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498880056] [2024-10-11 16:39:05,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498880056] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:39:05,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:39:05,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:39:05,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957901541] [2024-10-11 16:39:05,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:39:05,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 16:39:05,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:39:05,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 16:39:05,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 16:39:05,834 INFO L87 Difference]: Start difference. First operand has 1400 states, 892 states have (on average 1.836322869955157) internal successors, (1638), 1394 states have internal predecessors, (1638), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:39:06,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:39:06,047 INFO L93 Difference]: Finished difference Result 2799 states and 5787 transitions. [2024-10-11 16:39:06,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 16:39:06,050 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-11 16:39:06,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:39:06,083 INFO L225 Difference]: With dead ends: 2799 [2024-10-11 16:39:06,084 INFO L226 Difference]: Without dead ends: 1364 [2024-10-11 16:39:06,099 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 16:39:06,102 INFO L432 NwaCegarLoop]: 2570 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2570 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 16:39:06,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2570 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 16:39:06,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2024-10-11 16:39:06,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1364. [2024-10-11 16:39:06,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 857 states have (on average 1.7736289381563595) internal successors, (1520), 1358 states have internal predecessors, (1520), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2024-10-11 16:39:06,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 2526 transitions. [2024-10-11 16:39:06,500 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 2526 transitions. Word has length 8 [2024-10-11 16:39:06,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:39:06,501 INFO L471 AbstractCegarLoop]: Abstraction has 1364 states and 2526 transitions. [2024-10-11 16:39:06,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:39:06,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 2526 transitions. [2024-10-11 16:39:06,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-11 16:39:06,506 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:39:06,507 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:39:06,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 16:39:06,510 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:39:06,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:39:06,510 INFO L85 PathProgramCache]: Analyzing trace with hash -271741673, now seen corresponding path program 1 times [2024-10-11 16:39:06,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:39:06,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444994968] [2024-10-11 16:39:06,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:39:06,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:39:06,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:39:06,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:39:06,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:39:06,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444994968] [2024-10-11 16:39:06,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444994968] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:39:06,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:39:06,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 16:39:06,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852843806] [2024-10-11 16:39:06,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:39:07,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 16:39:07,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:39:07,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 16:39:07,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 16:39:07,003 INFO L87 Difference]: Start difference. First operand 1364 states and 2526 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:39:07,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:39:07,990 INFO L93 Difference]: Finished difference Result 3882 states and 7281 transitions. [2024-10-11 16:39:07,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 16:39:07,993 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-10-11 16:39:07,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:39:08,019 INFO L225 Difference]: With dead ends: 3882 [2024-10-11 16:39:08,020 INFO L226 Difference]: Without dead ends: 2717 [2024-10-11 16:39:08,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 16:39:08,031 INFO L432 NwaCegarLoop]: 2740 mSDtfsCounter, 1507 mSDsluCounter, 4740 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2010 SdHoareTripleChecker+Valid, 7480 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-10-11 16:39:08,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2010 Valid, 7480 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-10-11 16:39:08,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2717 states. [2024-10-11 16:39:08,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2717 to 1366. [2024-10-11 16:39:08,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1366 states, 859 states have (on average 1.7718277066356227) internal successors, (1522), 1360 states have internal predecessors, (1522), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2024-10-11 16:39:08,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1366 states to 1366 states and 2528 transitions. [2024-10-11 16:39:08,327 INFO L78 Accepts]: Start accepts. Automaton has 1366 states and 2528 transitions. Word has length 63 [2024-10-11 16:39:08,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:39:08,328 INFO L471 AbstractCegarLoop]: Abstraction has 1366 states and 2528 transitions. [2024-10-11 16:39:08,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:39:08,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1366 states and 2528 transitions. [2024-10-11 16:39:08,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-10-11 16:39:08,332 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:39:08,332 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:39:08,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 16:39:08,333 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:39:08,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:39:08,334 INFO L85 PathProgramCache]: Analyzing trace with hash -930208392, now seen corresponding path program 1 times [2024-10-11 16:39:08,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:39:08,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403208591] [2024-10-11 16:39:08,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:39:08,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:39:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:39:08,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:39:08,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:39:08,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403208591] [2024-10-11 16:39:08,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403208591] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:39:08,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:39:08,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 16:39:08,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249637116] [2024-10-11 16:39:08,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:39:08,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 16:39:08,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:39:08,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 16:39:08,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 16:39:08,735 INFO L87 Difference]: Start difference. First operand 1366 states and 2528 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:39:08,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:39:08,899 INFO L93 Difference]: Finished difference Result 2687 states and 4987 transitions. [2024-10-11 16:39:08,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 16:39:08,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 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 139 [2024-10-11 16:39:08,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:39:08,913 INFO L225 Difference]: With dead ends: 2687 [2024-10-11 16:39:08,913 INFO L226 Difference]: Without dead ends: 1324 [2024-10-11 16:39:08,920 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 16:39:08,922 INFO L432 NwaCegarLoop]: 2421 mSDtfsCounter, 30 mSDsluCounter, 4825 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 7246 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 16:39:08,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 7246 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 16:39:08,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2024-10-11 16:39:09,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1324. [2024-10-11 16:39:09,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1324 states, 817 states have (on average 1.7686658506731947) internal successors, (1445), 1318 states have internal predecessors, (1445), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2024-10-11 16:39:09,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 2451 transitions. [2024-10-11 16:39:09,101 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 2451 transitions. Word has length 139 [2024-10-11 16:39:09,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:39:09,102 INFO L471 AbstractCegarLoop]: Abstraction has 1324 states and 2451 transitions. [2024-10-11 16:39:09,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:39:09,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 2451 transitions. [2024-10-11 16:39:09,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-10-11 16:39:09,107 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:39:09,107 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:39:09,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 16:39:09,107 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:39:09,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:39:09,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1343313156, now seen corresponding path program 1 times [2024-10-11 16:39:09,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:39:09,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908366308] [2024-10-11 16:39:09,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:39:09,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:39:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:39:09,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:39:09,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:39:09,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908366308] [2024-10-11 16:39:09,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908366308] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:39:09,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:39:09,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 16:39:09,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893430130] [2024-10-11 16:39:09,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:39:09,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:39:09,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:39:09,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:39:09,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:39:09,319 INFO L87 Difference]: Start difference. First operand 1324 states and 2451 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:39:09,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:39:09,508 INFO L93 Difference]: Finished difference Result 3869 states and 7222 transitions. [2024-10-11 16:39:09,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:39:09,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 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 139 [2024-10-11 16:39:09,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:39:09,530 INFO L225 Difference]: With dead ends: 3869 [2024-10-11 16:39:09,530 INFO L226 Difference]: Without dead ends: 2548 [2024-10-11 16:39:09,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:39:09,541 INFO L432 NwaCegarLoop]: 2895 mSDtfsCounter, 1260 mSDsluCounter, 2427 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1760 SdHoareTripleChecker+Valid, 5322 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 16:39:09,542 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1760 Valid, 5322 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 16:39:09,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2024-10-11 16:39:09,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2546. [2024-10-11 16:39:09,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2546 states, 1539 states have (on average 1.796621182586095) internal successors, (2765), 2540 states have internal predecessors, (2765), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2024-10-11 16:39:09,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2546 states to 2546 states and 4771 transitions. [2024-10-11 16:39:09,835 INFO L78 Accepts]: Start accepts. Automaton has 2546 states and 4771 transitions. Word has length 139 [2024-10-11 16:39:09,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:39:09,837 INFO L471 AbstractCegarLoop]: Abstraction has 2546 states and 4771 transitions. [2024-10-11 16:39:09,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 2 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 16:39:09,837 INFO L276 IsEmpty]: Start isEmpty. Operand 2546 states and 4771 transitions. [2024-10-11 16:39:09,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-10-11 16:39:09,839 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:39:09,839 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:39:09,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 16:39:09,840 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:39:09,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:39:09,841 INFO L85 PathProgramCache]: Analyzing trace with hash 551944948, now seen corresponding path program 1 times [2024-10-11 16:39:09,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:39:09,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184065939] [2024-10-11 16:39:09,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:39:09,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:39:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:39:10,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-11 16:39:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:39:10,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-11 16:39:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:39:10,182 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 16:39:10,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:39:10,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184065939] [2024-10-11 16:39:10,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184065939] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:39:10,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:39:10,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 16:39:10,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472592380] [2024-10-11 16:39:10,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:39:10,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-11 16:39:10,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:39:10,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-11 16:39:10,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-11 16:39:10,188 INFO L87 Difference]: Start difference. First operand 2546 states and 4771 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:39:12,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:39:12,774 INFO L93 Difference]: Finished difference Result 4763 states and 9084 transitions. [2024-10-11 16:39:12,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 16:39:12,775 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 152 [2024-10-11 16:39:12,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:39:12,797 INFO L225 Difference]: With dead ends: 4763 [2024-10-11 16:39:12,797 INFO L226 Difference]: Without dead ends: 2464 [2024-10-11 16:39:12,807 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 16:39:12,809 INFO L432 NwaCegarLoop]: 2332 mSDtfsCounter, 37 mSDsluCounter, 4925 mSDsCounter, 0 mSdLazyCounter, 1647 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 7257 SdHoareTripleChecker+Invalid, 2170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 1647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-11 16:39:12,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 7257 Invalid, 2170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [523 Valid, 1647 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-11 16:39:12,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2024-10-11 16:39:13,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 2462. [2024-10-11 16:39:13,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2462 states, 1455 states have (on average 1.7945017182130585) internal successors, (2611), 2456 states have internal predecessors, (2611), 1003 states have call successors, (1003), 2 states have call predecessors, (1003), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2024-10-11 16:39:13,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2462 states to 2462 states and 4617 transitions. [2024-10-11 16:39:13,118 INFO L78 Accepts]: Start accepts. Automaton has 2462 states and 4617 transitions. Word has length 152 [2024-10-11 16:39:13,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:39:13,119 INFO L471 AbstractCegarLoop]: Abstraction has 2462 states and 4617 transitions. [2024-10-11 16:39:13,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:39:13,119 INFO L276 IsEmpty]: Start isEmpty. Operand 2462 states and 4617 transitions. [2024-10-11 16:39:13,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-10-11 16:39:13,121 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:39:13,121 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:39:13,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 16:39:13,122 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:39:13,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:39:13,122 INFO L85 PathProgramCache]: Analyzing trace with hash -619569176, now seen corresponding path program 1 times [2024-10-11 16:39:13,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:39:13,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995057154] [2024-10-11 16:39:13,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:39:13,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:39:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:39:13,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-11 16:39:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:39:13,458 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-11 16:39:13,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:39:13,464 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 16:39:13,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:39:13,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995057154] [2024-10-11 16:39:13,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995057154] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:39:13,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:39:13,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 16:39:13,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740366371] [2024-10-11 16:39:13,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:39:13,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 16:39:13,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:39:13,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 16:39:13,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-11 16:39:13,469 INFO L87 Difference]: Start difference. First operand 2462 states and 4617 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:39:19,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:39:19,225 INFO L93 Difference]: Finished difference Result 4915 states and 9225 transitions. [2024-10-11 16:39:19,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 16:39:19,226 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 152 [2024-10-11 16:39:19,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:39:19,246 INFO L225 Difference]: With dead ends: 4915 [2024-10-11 16:39:19,247 INFO L226 Difference]: Without dead ends: 2543 [2024-10-11 16:39:19,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-11 16:39:19,259 INFO L432 NwaCegarLoop]: 2686 mSDtfsCounter, 6050 mSDsluCounter, 3847 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 2541 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6552 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 3979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2541 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-10-11 16:39:19,259 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6552 Valid, 6533 Invalid, 3979 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2541 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-10-11 16:39:19,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2543 states. [2024-10-11 16:39:19,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2543 to 1369. [2024-10-11 16:39:19,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 862 states have (on average 1.7215777262180973) internal successors, (1484), 1363 states have internal predecessors, (1484), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2024-10-11 16:39:19,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 2490 transitions. [2024-10-11 16:39:19,622 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 2490 transitions. Word has length 152 [2024-10-11 16:39:19,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:39:19,625 INFO L471 AbstractCegarLoop]: Abstraction has 1369 states and 2490 transitions. [2024-10-11 16:39:19,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 5 states have internal predecessors, (146), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 16:39:19,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 2490 transitions. [2024-10-11 16:39:19,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-10-11 16:39:19,627 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:39:19,627 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:39:19,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 16:39:19,628 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:39:19,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:39:19,628 INFO L85 PathProgramCache]: Analyzing trace with hash -261366884, now seen corresponding path program 1 times [2024-10-11 16:39:19,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:39:19,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995839893] [2024-10-11 16:39:19,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:39:19,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:39:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:39:20,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-11 16:39:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:39:20,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-11 16:39:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:39:20,522 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 16:39:20,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:39:20,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995839893] [2024-10-11 16:39:20,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995839893] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:39:20,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404078906] [2024-10-11 16:39:20,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:39:20,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:39:20,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:39:20,525 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:39:20,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 16:39:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:39:20,879 INFO L255 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-11 16:39:20,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:39:20,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-11 16:39:21,153 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 25 treesize of output 13 [2024-10-11 16:39:21,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-11 16:39:21,172 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 16:39:21,172 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:39:21,367 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 16:39:21,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404078906] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:39:21,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:39:21,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 12 [2024-10-11 16:39:21,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651729150] [2024-10-11 16:39:21,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:39:21,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 16:39:21,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:39:21,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 16:39:21,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-10-11 16:39:21,370 INFO L87 Difference]: Start difference. First operand 1369 states and 2490 transitions. Second operand has 12 states, 12 states have (on average 20.5) internal successors, (246), 11 states have internal predecessors, (246), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 16:39:30,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:39:30,501 INFO L93 Difference]: Finished difference Result 5222 states and 9633 transitions. [2024-10-11 16:39:30,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 16:39:30,502 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 20.5) internal successors, (246), 11 states have internal predecessors, (246), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 162 [2024-10-11 16:39:30,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:39:30,528 INFO L225 Difference]: With dead ends: 5222 [2024-10-11 16:39:30,529 INFO L226 Difference]: Without dead ends: 4099 [2024-10-11 16:39:30,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 320 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-10-11 16:39:30,536 INFO L432 NwaCegarLoop]: 1879 mSDtfsCounter, 4315 mSDsluCounter, 10035 mSDsCounter, 0 mSdLazyCounter, 6200 mSolverCounterSat, 2512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5327 SdHoareTripleChecker+Valid, 11914 SdHoareTripleChecker+Invalid, 8712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2512 IncrementalHoareTripleChecker+Valid, 6200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-10-11 16:39:30,536 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5327 Valid, 11914 Invalid, 8712 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2512 Valid, 6200 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2024-10-11 16:39:30,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4099 states. [2024-10-11 16:39:30,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4099 to 1715. [2024-10-11 16:39:30,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 1204 states have (on average 1.611295681063123) internal successors, (1940), 1705 states have internal predecessors, (1940), 506 states have call successors, (506), 3 states have call predecessors, (506), 3 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2024-10-11 16:39:30,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2952 transitions. [2024-10-11 16:39:30,989 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2952 transitions. Word has length 162 [2024-10-11 16:39:30,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:39:30,990 INFO L471 AbstractCegarLoop]: Abstraction has 1715 states and 2952 transitions. [2024-10-11 16:39:30,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.5) internal successors, (246), 11 states have internal predecessors, (246), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 16:39:30,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2952 transitions. [2024-10-11 16:39:30,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2024-10-11 16:39:30,995 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:39:30,995 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:39:31,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 16:39:31,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:39:31,197 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:39:31,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:39:31,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1775265373, now seen corresponding path program 1 times [2024-10-11 16:39:31,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:39:31,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327485257] [2024-10-11 16:39:31,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:39:31,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:39:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:39:35,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-11 16:39:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:39:35,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-11 16:39:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:39:35,184 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 16:39:35,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:39:35,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327485257] [2024-10-11 16:39:35,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327485257] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:39:35,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494785670] [2024-10-11 16:39:35,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:39:35,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:39:35,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:39:35,188 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:39:35,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 16:39:35,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:39:35,862 INFO L255 TraceCheckSpWp]: Trace formula consists of 1898 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-11 16:39:35,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:39:35,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-11 16:39:36,068 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 25 treesize of output 13 [2024-10-11 16:39:36,190 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 25 treesize of output 13 [2024-10-11 16:39:36,295 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 25 treesize of output 13 [2024-10-11 16:39:36,400 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 25 treesize of output 13 [2024-10-11 16:39:36,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-11 16:39:36,413 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 16:39:36,413 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:39:36,899 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 16:39:36,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494785670] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:39:36,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:39:36,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 20 [2024-10-11 16:39:36,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550384316] [2024-10-11 16:39:36,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:39:36,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-11 16:39:36,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:39:36,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-11 16:39:36,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=247, Unknown=0, NotChecked=0, Total=380 [2024-10-11 16:39:36,903 INFO L87 Difference]: Start difference. First operand 1715 states and 2952 transitions. Second operand has 20 states, 20 states have (on average 35.35) internal successors, (707), 19 states have internal predecessors, (707), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 16:39:55,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 16:39:55,861 INFO L93 Difference]: Finished difference Result 10550 states and 19420 transitions. [2024-10-11 16:39:55,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-11 16:39:55,862 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 35.35) internal successors, (707), 19 states have internal predecessors, (707), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 390 [2024-10-11 16:39:55,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 16:39:55,915 INFO L225 Difference]: With dead ends: 10550 [2024-10-11 16:39:55,915 INFO L226 Difference]: Without dead ends: 9427 [2024-10-11 16:39:55,923 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 804 GetRequests, 776 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=216, Invalid=486, Unknown=0, NotChecked=0, Total=702 [2024-10-11 16:39:55,923 INFO L432 NwaCegarLoop]: 1879 mSDtfsCounter, 16054 mSDsluCounter, 20613 mSDsCounter, 0 mSdLazyCounter, 12095 mSolverCounterSat, 5812 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19074 SdHoareTripleChecker+Valid, 22492 SdHoareTripleChecker+Invalid, 17907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5812 IncrementalHoareTripleChecker+Valid, 12095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2024-10-11 16:39:55,924 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19074 Valid, 22492 Invalid, 17907 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5812 Valid, 12095 Invalid, 0 Unknown, 0 Unchecked, 17.6s Time] [2024-10-11 16:39:55,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9427 states. [2024-10-11 16:39:56,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9427 to 2579. [2024-10-11 16:39:56,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2579 states, 2062 states have (on average 1.4966052376333656) internal successors, (3086), 2563 states have internal predecessors, (3086), 512 states have call successors, (512), 3 states have call predecessors, (512), 3 states have return successors, (512), 13 states have call predecessors, (512), 512 states have call successors, (512) [2024-10-11 16:39:56,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2579 states to 2579 states and 4110 transitions. [2024-10-11 16:39:56,943 INFO L78 Accepts]: Start accepts. Automaton has 2579 states and 4110 transitions. Word has length 390 [2024-10-11 16:39:56,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 16:39:56,945 INFO L471 AbstractCegarLoop]: Abstraction has 2579 states and 4110 transitions. [2024-10-11 16:39:56,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 35.35) internal successors, (707), 19 states have internal predecessors, (707), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-10-11 16:39:56,945 INFO L276 IsEmpty]: Start isEmpty. Operand 2579 states and 4110 transitions. [2024-10-11 16:39:56,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 847 [2024-10-11 16:39:56,969 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 16:39:56,969 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:39:56,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 16:39:57,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:39:57,174 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 16:39:57,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:39:57,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1140766513, now seen corresponding path program 2 times [2024-10-11 16:39:57,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:39:57,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659897324] [2024-10-11 16:39:57,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:39:57,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:39:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:40:09,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-11 16:40:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:40:09,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-11 16:40:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:40:09,167 INFO L134 CoverageAnalysis]: Checked inductivity of 3425 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 16:40:09,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:40:09,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659897324] [2024-10-11 16:40:09,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659897324] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:40:09,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639405550] [2024-10-11 16:40:09,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 16:40:09,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:40:09,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:40:09,175 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:40:09,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 16:40:09,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 16:40:09,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 16:40:09,948 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-11 16:40:09,959 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:40:09,982 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