./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 42d34b3801344b79b388ecea52b2e670196aa6b758fe24ea6ecf5c2b8bbf579b --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 06:22:40,164 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 06:22:40,219 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 06:22:40,230 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 06:22:40,230 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 06:22:40,265 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 06:22:40,265 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 06:22:40,266 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 06:22:40,267 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 06:22:40,269 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 06:22:40,269 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 06:22:40,270 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 06:22:40,270 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 06:22:40,271 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 06:22:40,300 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 06:22:40,301 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 06:22:40,301 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 06:22:40,301 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 06:22:40,301 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 06:22:40,302 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 06:22:40,302 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 06:22:40,305 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 06:22:40,305 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 06:22:40,306 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 06:22:40,306 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 06:22:40,306 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 06:22:40,306 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 06:22:40,307 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 06:22:40,307 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 06:22:40,307 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 06:22:40,307 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 06:22:40,307 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 06:22:40,308 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 06:22:40,308 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 06:22:40,308 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 06:22:40,308 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 06:22:40,308 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 06:22:40,309 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 06:22:40,309 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 06:22:40,309 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 06:22:40,312 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 06:22:40,317 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 06:22:40,317 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42d34b3801344b79b388ecea52b2e670196aa6b758fe24ea6ecf5c2b8bbf579b [2024-11-09 06:22:40,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 06:22:40,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 06:22:40,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 06:22:40,651 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 06:22:40,652 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 06:22:40,654 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i [2024-11-09 06:22:42,359 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 06:22:42,742 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 06:22:42,742 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i [2024-11-09 06:22:42,763 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbff664d0/130e5a3bf1c1465ab207535e22059bce/FLAG6be48621d [2024-11-09 06:22:42,779 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbff664d0/130e5a3bf1c1465ab207535e22059bce [2024-11-09 06:22:42,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 06:22:42,783 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 06:22:42,784 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 06:22:42,784 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 06:22:42,791 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 06:22:42,792 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:22:42" (1/1) ... [2024-11-09 06:22:42,793 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77637296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:42, skipping insertion in model container [2024-11-09 06:22:42,793 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 06:22:42" (1/1) ... [2024-11-09 06:22:42,843 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 06:22:43,303 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[33021,33034] [2024-11-09 06:22:43,433 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[45234,45247] [2024-11-09 06:22:43,459 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:22:43,472 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 06:22:43,521 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[33021,33034] [2024-11-09 06:22:43,640 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test8-2.i[45234,45247] [2024-11-09 06:22:43,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 06:22:43,725 INFO L204 MainTranslator]: Completed translation [2024-11-09 06:22:43,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:43 WrapperNode [2024-11-09 06:22:43,726 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 06:22:43,727 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 06:22:43,727 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 06:22:43,728 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 06:22:43,736 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:43" (1/1) ... [2024-11-09 06:22:43,770 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:43" (1/1) ... [2024-11-09 06:22:43,877 INFO L138 Inliner]: procedures = 177, calls = 340, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1589 [2024-11-09 06:22:43,878 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 06:22:43,880 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 06:22:43,880 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 06:22:43,880 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 06:22:43,892 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:43" (1/1) ... [2024-11-09 06:22:43,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:43" (1/1) ... [2024-11-09 06:22:43,916 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:43" (1/1) ... [2024-11-09 06:22:44,029 INFO L175 MemorySlicer]: Split 304 memory accesses to 3 slices as follows [2, 34, 268]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 62 writes are split as follows [0, 4, 58]. [2024-11-09 06:22:44,030 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:43" (1/1) ... [2024-11-09 06:22:44,030 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:43" (1/1) ... [2024-11-09 06:22:44,089 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:43" (1/1) ... [2024-11-09 06:22:44,112 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:43" (1/1) ... [2024-11-09 06:22:44,125 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:43" (1/1) ... [2024-11-09 06:22:44,138 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:43" (1/1) ... [2024-11-09 06:22:44,159 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 06:22:44,160 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 06:22:44,160 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 06:22:44,161 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 06:22:44,162 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:43" (1/1) ... [2024-11-09 06:22:44,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 06:22:44,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:22:44,210 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 06:22:44,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 06:22:44,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 06:22:44,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 06:22:44,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 06:22:44,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 06:22:44,284 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 06:22:44,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 06:22:44,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 06:22:44,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 06:22:44,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-09 06:22:44,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-09 06:22:44,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-09 06:22:44,284 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-09 06:22:44,285 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-09 06:22:44,285 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-09 06:22:44,285 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2024-11-09 06:22:44,285 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2024-11-09 06:22:44,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 06:22:44,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 06:22:44,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-09 06:22:44,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-09 06:22:44,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-09 06:22:44,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 06:22:44,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-09 06:22:44,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-09 06:22:44,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-09 06:22:44,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 06:22:44,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 06:22:44,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 06:22:44,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 06:22:44,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 06:22:44,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 06:22:44,498 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 06:22:44,500 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 06:22:46,089 INFO L? ?]: Removed 355 outVars from TransFormulas that were not future-live. [2024-11-09 06:22:46,090 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 06:22:46,110 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 06:22:46,111 INFO L316 CfgBuilder]: Removed 71 assume(true) statements. [2024-11-09 06:22:46,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:22:46 BoogieIcfgContainer [2024-11-09 06:22:46,112 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 06:22:46,114 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 06:22:46,114 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 06:22:46,117 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 06:22:46,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 06:22:42" (1/3) ... [2024-11-09 06:22:46,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@494f7030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:22:46, skipping insertion in model container [2024-11-09 06:22:46,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 06:22:43" (2/3) ... [2024-11-09 06:22:46,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@494f7030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 06:22:46, skipping insertion in model container [2024-11-09 06:22:46,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 06:22:46" (3/3) ... [2024-11-09 06:22:46,121 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test8-2.i [2024-11-09 06:22:46,138 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 06:22:46,138 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 06:22:46,258 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 06:22:46,265 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;@2addb9b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 06:22:46,266 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-09 06:22:46,272 INFO L276 IsEmpty]: Start isEmpty. Operand has 471 states, 445 states have (on average 1.6269662921348316) internal successors, (724), 462 states have internal predecessors, (724), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-09 06:22:46,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 06:22:46,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:22:46,280 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:22:46,280 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:22:46,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:22:46,286 INFO L85 PathProgramCache]: Analyzing trace with hash -351686983, now seen corresponding path program 1 times [2024-11-09 06:22:46,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:22:46,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771248101] [2024-11-09 06:22:46,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:22:46,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:22:46,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:46,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:22:46,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:22:46,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771248101] [2024-11-09 06:22:46,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771248101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:22:46,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:22:46,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 06:22:46,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473924803] [2024-11-09 06:22:46,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:22:46,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 06:22:46,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:22:46,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 06:22:46,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 06:22:46,475 INFO L87 Difference]: Start difference. First operand has 471 states, 445 states have (on average 1.6269662921348316) internal successors, (724), 462 states have internal predecessors, (724), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:22:46,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:22:46,538 INFO L93 Difference]: Finished difference Result 940 states and 1543 transitions. [2024-11-09 06:22:46,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 06:22:46,540 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-09 06:22:46,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:22:46,553 INFO L225 Difference]: With dead ends: 940 [2024-11-09 06:22:46,553 INFO L226 Difference]: Without dead ends: 432 [2024-11-09 06:22:46,559 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 06:22:46,562 INFO L432 NwaCegarLoop]: 687 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:22:46,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:22:46,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2024-11-09 06:22:46,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 432. [2024-11-09 06:22:46,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 407 states have (on average 1.461916461916462) internal successors, (595), 423 states have internal predecessors, (595), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-09 06:22:46,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 635 transitions. [2024-11-09 06:22:46,627 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 635 transitions. Word has length 9 [2024-11-09 06:22:46,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:22:46,627 INFO L471 AbstractCegarLoop]: Abstraction has 432 states and 635 transitions. [2024-11-09 06:22:46,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:22:46,628 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 635 transitions. [2024-11-09 06:22:46,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-09 06:22:46,631 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:22:46,632 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:22:46,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 06:22:46,632 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:22:46,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:22:46,633 INFO L85 PathProgramCache]: Analyzing trace with hash 559678017, now seen corresponding path program 1 times [2024-11-09 06:22:46,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:22:46,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849423995] [2024-11-09 06:22:46,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:22:46,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:22:46,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:47,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:22:47,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:22:47,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849423995] [2024-11-09 06:22:47,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849423995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:22:47,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:22:47,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:22:47,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636449779] [2024-11-09 06:22:47,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:22:47,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:22:47,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:22:47,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:22:47,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:22:47,014 INFO L87 Difference]: Start difference. First operand 432 states and 635 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:22:47,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:22:47,173 INFO L93 Difference]: Finished difference Result 1045 states and 1537 transitions. [2024-11-09 06:22:47,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:22:47,174 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 64 [2024-11-09 06:22:47,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:22:47,179 INFO L225 Difference]: With dead ends: 1045 [2024-11-09 06:22:47,180 INFO L226 Difference]: Without dead ends: 817 [2024-11-09 06:22:47,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:22:47,182 INFO L432 NwaCegarLoop]: 616 mSDtfsCounter, 547 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 1840 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:22:47,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 1840 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:22:47,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2024-11-09 06:22:47,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 434. [2024-11-09 06:22:47,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 409 states have (on average 1.4596577017114913) internal successors, (597), 425 states have internal predecessors, (597), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-09 06:22:47,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 637 transitions. [2024-11-09 06:22:47,241 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 637 transitions. Word has length 64 [2024-11-09 06:22:47,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:22:47,241 INFO L471 AbstractCegarLoop]: Abstraction has 434 states and 637 transitions. [2024-11-09 06:22:47,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:22:47,242 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 637 transitions. [2024-11-09 06:22:47,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-09 06:22:47,244 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:22:47,245 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:22:47,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 06:22:47,246 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:22:47,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:22:47,246 INFO L85 PathProgramCache]: Analyzing trace with hash 2092098682, now seen corresponding path program 1 times [2024-11-09 06:22:47,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:22:47,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153917737] [2024-11-09 06:22:47,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:22:47,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:22:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:47,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:22:47,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:22:47,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153917737] [2024-11-09 06:22:47,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153917737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:22:47,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:22:47,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 06:22:47,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267941471] [2024-11-09 06:22:47,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:22:47,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:22:47,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:22:47,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:22:47,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 06:22:47,695 INFO L87 Difference]: Start difference. First operand 434 states and 637 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:22:47,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:22:47,853 INFO L93 Difference]: Finished difference Result 822 states and 1204 transitions. [2024-11-09 06:22:47,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 06:22:47,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-11-09 06:22:47,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:22:47,859 INFO L225 Difference]: With dead ends: 822 [2024-11-09 06:22:47,861 INFO L226 Difference]: Without dead ends: 392 [2024-11-09 06:22:47,863 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:22:47,868 INFO L432 NwaCegarLoop]: 533 mSDtfsCounter, 30 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:22:47,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1580 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:22:47,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-11-09 06:22:47,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2024-11-09 06:22:47,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 367 states have (on average 1.4168937329700273) internal successors, (520), 383 states have internal predecessors, (520), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-09 06:22:47,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 560 transitions. [2024-11-09 06:22:47,899 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 560 transitions. Word has length 85 [2024-11-09 06:22:47,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:22:47,900 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 560 transitions. [2024-11-09 06:22:47,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:22:47,900 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 560 transitions. [2024-11-09 06:22:47,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-09 06:22:47,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:22:47,906 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:22:47,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 06:22:47,907 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:22:47,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:22:47,909 INFO L85 PathProgramCache]: Analyzing trace with hash -2046434962, now seen corresponding path program 1 times [2024-11-09 06:22:47,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:22:47,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486665199] [2024-11-09 06:22:47,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:22:47,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:22:48,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:48,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:22:48,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:22:48,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486665199] [2024-11-09 06:22:48,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486665199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:22:48,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:22:48,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 06:22:48,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636971035] [2024-11-09 06:22:48,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:22:48,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 06:22:48,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:22:48,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 06:22:48,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:22:48,187 INFO L87 Difference]: Start difference. First operand 392 states and 560 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:22:48,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:22:48,305 INFO L93 Difference]: Finished difference Result 1032 states and 1478 transitions. [2024-11-09 06:22:48,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 06:22:48,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-11-09 06:22:48,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:22:48,311 INFO L225 Difference]: With dead ends: 1032 [2024-11-09 06:22:48,311 INFO L226 Difference]: Without dead ends: 644 [2024-11-09 06:22:48,313 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 06:22:48,317 INFO L432 NwaCegarLoop]: 737 mSDtfsCounter, 295 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:22:48,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 1266 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:22:48,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2024-11-09 06:22:48,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 641. [2024-11-09 06:22:48,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 615 states have (on average 1.424390243902439) internal successors, (876), 631 states have internal predecessors, (876), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-09 06:22:48,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 918 transitions. [2024-11-09 06:22:48,349 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 918 transitions. Word has length 85 [2024-11-09 06:22:48,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:22:48,351 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 918 transitions. [2024-11-09 06:22:48,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 06:22:48,351 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 918 transitions. [2024-11-09 06:22:48,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-09 06:22:48,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:22:48,356 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] [2024-11-09 06:22:48,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 06:22:48,356 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:22:48,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:22:48,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1409542968, now seen corresponding path program 1 times [2024-11-09 06:22:48,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:22:48,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769927459] [2024-11-09 06:22:48,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:22:48,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:22:48,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:48,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-09 06:22:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:48,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-09 06:22:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:48,956 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:22:48,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:22:48,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769927459] [2024-11-09 06:22:48,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769927459] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:22:48,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733900426] [2024-11-09 06:22:48,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:22:48,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:22:48,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:22:48,961 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:22:48,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:22:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:49,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-09 06:22:49,387 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:22:49,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 06:22:49,469 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 22 treesize of output 7 [2024-11-09 06:22:50,043 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 06:22:50,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 55 [2024-11-09 06:22:50,297 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:22:50,299 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:22:50,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733900426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:22:50,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:22:50,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2024-11-09 06:22:50,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503536767] [2024-11-09 06:22:50,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:22:50,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 06:22:50,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:22:50,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 06:22:50,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-09 06:22:50,304 INFO L87 Difference]: Start difference. First operand 641 states and 918 transitions. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:22:53,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:22:53,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:22:53,833 INFO L93 Difference]: Finished difference Result 1537 states and 2203 transitions. [2024-11-09 06:22:53,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 06:22:53,834 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 100 [2024-11-09 06:22:53,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:22:53,839 INFO L225 Difference]: With dead ends: 1537 [2024-11-09 06:22:53,839 INFO L226 Difference]: Without dead ends: 940 [2024-11-09 06:22:53,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-11-09 06:22:53,842 INFO L432 NwaCegarLoop]: 534 mSDtfsCounter, 595 mSDsluCounter, 3598 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 4132 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:22:53,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 4132 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-09 06:22:53,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2024-11-09 06:22:53,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 641. [2024-11-09 06:22:53,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 615 states have (on average 1.4227642276422765) internal successors, (875), 631 states have internal predecessors, (875), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-09 06:22:53,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 917 transitions. [2024-11-09 06:22:53,867 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 917 transitions. Word has length 100 [2024-11-09 06:22:53,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:22:53,868 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 917 transitions. [2024-11-09 06:22:53,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:22:53,868 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 917 transitions. [2024-11-09 06:22:53,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-09 06:22:53,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:22:53,870 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] [2024-11-09 06:22:53,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 06:22:54,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:22:54,076 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:22:54,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:22:54,076 INFO L85 PathProgramCache]: Analyzing trace with hash 190823784, now seen corresponding path program 1 times [2024-11-09 06:22:54,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:22:54,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794438936] [2024-11-09 06:22:54,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:22:54,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:22:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:54,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-09 06:22:54,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:54,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-09 06:22:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:54,728 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:22:54,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:22:54,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794438936] [2024-11-09 06:22:54,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794438936] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:22:54,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364782401] [2024-11-09 06:22:54,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:22:54,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:22:54,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:22:54,733 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:22:54,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 06:22:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:55,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 06:22:55,084 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:22:55,143 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:22:55,146 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:22:55,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364782401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:22:55,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:22:55,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-09 06:22:55,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682004192] [2024-11-09 06:22:55,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:22:55,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:22:55,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:22:55,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:22:55,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:22:55,149 INFO L87 Difference]: Start difference. First operand 641 states and 917 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:22:55,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:22:55,273 INFO L93 Difference]: Finished difference Result 1238 states and 1784 transitions. [2024-11-09 06:22:55,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:22:55,274 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 101 [2024-11-09 06:22:55,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:22:55,279 INFO L225 Difference]: With dead ends: 1238 [2024-11-09 06:22:55,280 INFO L226 Difference]: Without dead ends: 641 [2024-11-09 06:22:55,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:22:55,282 INFO L432 NwaCegarLoop]: 542 mSDtfsCounter, 17 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:22:55,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 1497 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 06:22:55,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2024-11-09 06:22:55,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 641. [2024-11-09 06:22:55,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 615 states have (on average 1.4195121951219511) internal successors, (873), 631 states have internal predecessors, (873), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-09 06:22:55,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 915 transitions. [2024-11-09 06:22:55,303 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 915 transitions. Word has length 101 [2024-11-09 06:22:55,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:22:55,303 INFO L471 AbstractCegarLoop]: Abstraction has 641 states and 915 transitions. [2024-11-09 06:22:55,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:22:55,304 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 915 transitions. [2024-11-09 06:22:55,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-09 06:22:55,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:22:55,305 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] [2024-11-09 06:22:55,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 06:22:55,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 06:22:55,511 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:22:55,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:22:55,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1382799827, now seen corresponding path program 1 times [2024-11-09 06:22:55,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:22:55,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835853000] [2024-11-09 06:22:55,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:22:55,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:22:55,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:55,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-09 06:22:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:55,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-09 06:22:55,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:55,954 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:22:55,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:22:55,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835853000] [2024-11-09 06:22:55,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835853000] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:22:55,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:22:55,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 06:22:55,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237229143] [2024-11-09 06:22:55,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:22:55,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:22:55,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:22:55,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:22:55,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:22:55,960 INFO L87 Difference]: Start difference. First operand 641 states and 915 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:22:56,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:22:56,731 INFO L93 Difference]: Finished difference Result 1244 states and 1792 transitions. [2024-11-09 06:22:56,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:22:56,732 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 102 [2024-11-09 06:22:56,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:22:56,736 INFO L225 Difference]: With dead ends: 1244 [2024-11-09 06:22:56,736 INFO L226 Difference]: Without dead ends: 650 [2024-11-09 06:22:56,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-09 06:22:56,740 INFO L432 NwaCegarLoop]: 472 mSDtfsCounter, 64 mSDsluCounter, 1979 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 2451 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 06:22:56,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 2451 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 06:22:56,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2024-11-09 06:22:56,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 647. [2024-11-09 06:22:56,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 621 states have (on average 1.4154589371980677) internal successors, (879), 637 states have internal predecessors, (879), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-09 06:22:56,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 921 transitions. [2024-11-09 06:22:56,765 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 921 transitions. Word has length 102 [2024-11-09 06:22:56,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:22:56,767 INFO L471 AbstractCegarLoop]: Abstraction has 647 states and 921 transitions. [2024-11-09 06:22:56,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:22:56,768 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 921 transitions. [2024-11-09 06:22:56,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-09 06:22:56,770 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:22:56,770 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] [2024-11-09 06:22:56,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 06:22:56,770 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:22:56,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:22:56,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1156605761, now seen corresponding path program 1 times [2024-11-09 06:22:56,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:22:56,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373335433] [2024-11-09 06:22:56,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:22:56,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:22:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:57,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-09 06:22:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:57,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-09 06:22:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:57,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 06:22:57,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:22:57,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373335433] [2024-11-09 06:22:57,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373335433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:22:57,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:22:57,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 06:22:57,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698177307] [2024-11-09 06:22:57,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:22:57,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:22:57,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:22:57,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:22:57,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:22:57,196 INFO L87 Difference]: Start difference. First operand 647 states and 921 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:22:58,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:22:58,009 INFO L93 Difference]: Finished difference Result 1250 states and 1796 transitions. [2024-11-09 06:22:58,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 06:22:58,010 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 103 [2024-11-09 06:22:58,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:22:58,013 INFO L225 Difference]: With dead ends: 1250 [2024-11-09 06:22:58,013 INFO L226 Difference]: Without dead ends: 660 [2024-11-09 06:22:58,015 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:22:58,015 INFO L432 NwaCegarLoop]: 462 mSDtfsCounter, 68 mSDsluCounter, 2365 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 2827 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 06:22:58,016 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 2827 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 06:22:58,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2024-11-09 06:22:58,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 655. [2024-11-09 06:22:58,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 629 states have (on average 1.4133545310015898) internal successors, (889), 645 states have internal predecessors, (889), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-09 06:22:58,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 931 transitions. [2024-11-09 06:22:58,037 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 931 transitions. Word has length 103 [2024-11-09 06:22:58,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:22:58,037 INFO L471 AbstractCegarLoop]: Abstraction has 655 states and 931 transitions. [2024-11-09 06:22:58,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:22:58,038 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 931 transitions. [2024-11-09 06:22:58,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-09 06:22:58,039 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:22:58,039 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] [2024-11-09 06:22:58,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 06:22:58,039 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:22:58,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:22:58,040 INFO L85 PathProgramCache]: Analyzing trace with hash 728884005, now seen corresponding path program 1 times [2024-11-09 06:22:58,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:22:58,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607993189] [2024-11-09 06:22:58,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:22:58,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:22:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:58,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-09 06:22:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:58,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-09 06:22:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:58,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 06:22:58,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:22:58,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607993189] [2024-11-09 06:22:58,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607993189] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:22:58,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570911031] [2024-11-09 06:22:58,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:22:58,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:22:58,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:22:58,369 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:22:58,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 06:22:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:58,781 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 06:22:58,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:22:58,830 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 06:22:58,834 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:22:58,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570911031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:22:58,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:22:58,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2024-11-09 06:22:58,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106140064] [2024-11-09 06:22:58,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:22:58,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 06:22:58,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:22:58,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 06:22:58,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:22:58,837 INFO L87 Difference]: Start difference. First operand 655 states and 931 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:22:58,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:22:58,882 INFO L93 Difference]: Finished difference Result 1215 states and 1740 transitions. [2024-11-09 06:22:58,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 06:22:58,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 103 [2024-11-09 06:22:58,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:22:58,889 INFO L225 Difference]: With dead ends: 1215 [2024-11-09 06:22:58,889 INFO L226 Difference]: Without dead ends: 658 [2024-11-09 06:22:58,891 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 06:22:58,891 INFO L432 NwaCegarLoop]: 548 mSDtfsCounter, 0 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:22:58,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1640 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 06:22:58,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2024-11-09 06:22:58,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2024-11-09 06:22:58,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 631 states have (on average 1.4136291600633915) internal successors, (892), 648 states have internal predecessors, (892), 21 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-09 06:22:58,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 935 transitions. [2024-11-09 06:22:58,915 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 935 transitions. Word has length 103 [2024-11-09 06:22:58,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:22:58,917 INFO L471 AbstractCegarLoop]: Abstraction has 658 states and 935 transitions. [2024-11-09 06:22:58,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 06:22:58,917 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 935 transitions. [2024-11-09 06:22:58,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-09 06:22:58,918 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:22:58,918 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:22:58,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 06:22:59,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:22:59,121 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:22:59,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:22:59,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1574009597, now seen corresponding path program 1 times [2024-11-09 06:22:59,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:22:59,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944031149] [2024-11-09 06:22:59,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:22:59,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:22:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:59,654 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-09 06:22:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:59,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-11-09 06:22:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:22:59,765 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:22:59,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:22:59,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944031149] [2024-11-09 06:22:59,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944031149] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:22:59,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599033686] [2024-11-09 06:22:59,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:22:59,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:22:59,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:22:59,770 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:22:59,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 06:23:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:00,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 06:23:00,234 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:23:00,306 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:23:00,308 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:23:00,407 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 06:23:00,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599033686] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:23:00,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:23:00,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-09 06:23:00,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594001007] [2024-11-09 06:23:00,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:23:00,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 06:23:00,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:23:00,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 06:23:00,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-09 06:23:00,413 INFO L87 Difference]: Start difference. First operand 658 states and 935 transitions. Second operand has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 10 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 06:23:01,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:23:01,061 INFO L93 Difference]: Finished difference Result 1229 states and 1762 transitions. [2024-11-09 06:23:01,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 06:23:01,062 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 10 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 105 [2024-11-09 06:23:01,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:23:01,066 INFO L225 Difference]: With dead ends: 1229 [2024-11-09 06:23:01,066 INFO L226 Difference]: Without dead ends: 667 [2024-11-09 06:23:01,069 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2024-11-09 06:23:01,070 INFO L432 NwaCegarLoop]: 480 mSDtfsCounter, 62 mSDsluCounter, 2782 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 3262 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:23:01,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 3262 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 06:23:01,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2024-11-09 06:23:01,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 667. [2024-11-09 06:23:01,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 639 states have (on average 1.4147104851330203) internal successors, (904), 656 states have internal predecessors, (904), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (23), 7 states have call predecessors, (23), 21 states have call successors, (23) [2024-11-09 06:23:01,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 948 transitions. [2024-11-09 06:23:01,097 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 948 transitions. Word has length 105 [2024-11-09 06:23:01,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:23:01,097 INFO L471 AbstractCegarLoop]: Abstraction has 667 states and 948 transitions. [2024-11-09 06:23:01,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.090909090909092) internal successors, (111), 10 states have internal predecessors, (111), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 06:23:01,098 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 948 transitions. [2024-11-09 06:23:01,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-09 06:23:01,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:23:01,101 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:23:01,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 06:23:01,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:23:01,305 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:23:01,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:23:01,306 INFO L85 PathProgramCache]: Analyzing trace with hash 836960421, now seen corresponding path program 2 times [2024-11-09 06:23:01,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:23:01,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84216951] [2024-11-09 06:23:01,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:23:01,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:23:01,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:01,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-09 06:23:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:01,914 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-11-09 06:23:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:01,930 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 06:23:01,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:23:01,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84216951] [2024-11-09 06:23:01,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84216951] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:23:01,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686217926] [2024-11-09 06:23:01,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 06:23:01,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:23:01,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:23:01,934 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:23:01,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 06:23:02,360 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 06:23:02,360 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:23:02,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 06:23:02,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:23:02,693 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-09 06:23:02,693 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:23:02,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686217926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:23:02,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:23:02,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-09 06:23:02,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203298175] [2024-11-09 06:23:02,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:23:02,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:23:02,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:23:02,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:23:02,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-11-09 06:23:02,697 INFO L87 Difference]: Start difference. First operand 667 states and 948 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:23:03,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:23:03,085 INFO L93 Difference]: Finished difference Result 1283 states and 1839 transitions. [2024-11-09 06:23:03,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:23:03,086 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 109 [2024-11-09 06:23:03,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:23:03,090 INFO L225 Difference]: With dead ends: 1283 [2024-11-09 06:23:03,090 INFO L226 Difference]: Without dead ends: 677 [2024-11-09 06:23:03,092 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-11-09 06:23:03,093 INFO L432 NwaCegarLoop]: 537 mSDtfsCounter, 12 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2873 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:23:03,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2873 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:23:03,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 677 states. [2024-11-09 06:23:03,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 677 to 667. [2024-11-09 06:23:03,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 639 states have (on average 1.4147104851330203) internal successors, (904), 656 states have internal predecessors, (904), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (23), 7 states have call predecessors, (23), 21 states have call successors, (23) [2024-11-09 06:23:03,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 948 transitions. [2024-11-09 06:23:03,119 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 948 transitions. Word has length 109 [2024-11-09 06:23:03,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:23:03,120 INFO L471 AbstractCegarLoop]: Abstraction has 667 states and 948 transitions. [2024-11-09 06:23:03,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:23:03,120 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 948 transitions. [2024-11-09 06:23:03,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-09 06:23:03,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:23:03,122 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:23:03,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-09 06:23:03,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 06:23:03,323 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:23:03,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:23:03,324 INFO L85 PathProgramCache]: Analyzing trace with hash 87766439, now seen corresponding path program 1 times [2024-11-09 06:23:03,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:23:03,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029933861] [2024-11-09 06:23:03,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:23:03,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:23:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:03,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-09 06:23:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:03,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-09 06:23:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:03,823 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-09 06:23:03,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:23:03,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029933861] [2024-11-09 06:23:03,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029933861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:23:03,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:23:03,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 06:23:03,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206238916] [2024-11-09 06:23:03,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:23:03,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:23:03,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:23:03,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:23:03,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:23:03,828 INFO L87 Difference]: Start difference. First operand 667 states and 948 transitions. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 9 states have internal predecessors, (96), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:23:04,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:23:04,808 INFO L93 Difference]: Finished difference Result 1288 states and 1843 transitions. [2024-11-09 06:23:04,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 06:23:04,809 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 9 states have internal predecessors, (96), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 110 [2024-11-09 06:23:04,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:23:04,813 INFO L225 Difference]: With dead ends: 1288 [2024-11-09 06:23:04,814 INFO L226 Difference]: Without dead ends: 687 [2024-11-09 06:23:04,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-09 06:23:04,816 INFO L432 NwaCegarLoop]: 462 mSDtfsCounter, 76 mSDsluCounter, 3232 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 3694 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 06:23:04,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 3694 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 06:23:04,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2024-11-09 06:23:04,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 681. [2024-11-09 06:23:04,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 653 states have (on average 1.4119448698315467) internal successors, (922), 670 states have internal predecessors, (922), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (23), 7 states have call predecessors, (23), 21 states have call successors, (23) [2024-11-09 06:23:04,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 966 transitions. [2024-11-09 06:23:04,840 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 966 transitions. Word has length 110 [2024-11-09 06:23:04,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:23:04,841 INFO L471 AbstractCegarLoop]: Abstraction has 681 states and 966 transitions. [2024-11-09 06:23:04,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 9 states have internal predecessors, (96), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:23:04,841 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 966 transitions. [2024-11-09 06:23:04,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-09 06:23:04,842 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:23:04,843 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:23:04,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 06:23:04,843 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:23:04,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:23:04,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1330294461, now seen corresponding path program 1 times [2024-11-09 06:23:04,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:23:04,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637658299] [2024-11-09 06:23:04,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:23:04,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:23:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:05,283 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-09 06:23:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:05,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-09 06:23:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:05,402 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 06:23:05,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:23:05,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637658299] [2024-11-09 06:23:05,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637658299] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:23:05,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383614372] [2024-11-09 06:23:05,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:23:05,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:23:05,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:23:05,405 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:23:05,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 06:23:05,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:05,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 06:23:05,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:23:06,059 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-09 06:23:06,060 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:23:06,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383614372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:23:06,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:23:06,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-09 06:23:06,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957822926] [2024-11-09 06:23:06,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:23:06,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 06:23:06,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:23:06,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 06:23:06,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-09 06:23:06,064 INFO L87 Difference]: Start difference. First operand 681 states and 966 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:23:06,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:23:06,469 INFO L93 Difference]: Finished difference Result 1313 states and 1874 transitions. [2024-11-09 06:23:06,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 06:23:06,470 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 110 [2024-11-09 06:23:06,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:23:06,474 INFO L225 Difference]: With dead ends: 1313 [2024-11-09 06:23:06,474 INFO L226 Difference]: Without dead ends: 705 [2024-11-09 06:23:06,475 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-11-09 06:23:06,477 INFO L432 NwaCegarLoop]: 539 mSDtfsCounter, 41 mSDsluCounter, 2395 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 2934 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:23:06,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 2934 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:23:06,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2024-11-09 06:23:06,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 691. [2024-11-09 06:23:06,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 663 states have (on average 1.4087481146304677) internal successors, (934), 680 states have internal predecessors, (934), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (23), 7 states have call predecessors, (23), 21 states have call successors, (23) [2024-11-09 06:23:06,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 978 transitions. [2024-11-09 06:23:06,506 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 978 transitions. Word has length 110 [2024-11-09 06:23:06,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:23:06,506 INFO L471 AbstractCegarLoop]: Abstraction has 691 states and 978 transitions. [2024-11-09 06:23:06,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 8 states have internal predecessors, (96), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:23:06,507 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 978 transitions. [2024-11-09 06:23:06,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-09 06:23:06,508 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:23:06,508 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:23:06,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 06:23:06,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:23:06,710 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:23:06,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:23:06,710 INFO L85 PathProgramCache]: Analyzing trace with hash -540963691, now seen corresponding path program 1 times [2024-11-09 06:23:06,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:23:06,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876753151] [2024-11-09 06:23:06,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:23:06,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:23:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:07,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-09 06:23:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:07,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-09 06:23:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:07,369 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-09 06:23:07,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:23:07,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876753151] [2024-11-09 06:23:07,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876753151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:23:07,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:23:07,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-09 06:23:07,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219824783] [2024-11-09 06:23:07,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:23:07,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 06:23:07,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:23:07,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 06:23:07,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-09 06:23:07,372 INFO L87 Difference]: Start difference. First operand 691 states and 978 transitions. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:23:08,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:23:08,761 INFO L93 Difference]: Finished difference Result 1327 states and 1894 transitions. [2024-11-09 06:23:08,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 06:23:08,762 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 111 [2024-11-09 06:23:08,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:23:08,768 INFO L225 Difference]: With dead ends: 1327 [2024-11-09 06:23:08,768 INFO L226 Difference]: Without dead ends: 709 [2024-11-09 06:23:08,770 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-09 06:23:08,770 INFO L432 NwaCegarLoop]: 469 mSDtfsCounter, 82 mSDsluCounter, 3219 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 3688 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:23:08,771 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 3688 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1299 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 06:23:08,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2024-11-09 06:23:08,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 697. [2024-11-09 06:23:08,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 669 states have (on average 1.4050822122571) internal successors, (940), 686 states have internal predecessors, (940), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (23), 7 states have call predecessors, (23), 21 states have call successors, (23) [2024-11-09 06:23:08,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 984 transitions. [2024-11-09 06:23:08,795 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 984 transitions. Word has length 111 [2024-11-09 06:23:08,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:23:08,795 INFO L471 AbstractCegarLoop]: Abstraction has 697 states and 984 transitions. [2024-11-09 06:23:08,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:23:08,797 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 984 transitions. [2024-11-09 06:23:08,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-09 06:23:08,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:23:08,798 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:23:08,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 06:23:08,798 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:23:08,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:23:08,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1551178631, now seen corresponding path program 1 times [2024-11-09 06:23:08,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:23:08,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295608312] [2024-11-09 06:23:08,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:23:08,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:23:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:09,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-09 06:23:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:09,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-09 06:23:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:09,511 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 06:23:09,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:23:09,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295608312] [2024-11-09 06:23:09,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295608312] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:23:09,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126372420] [2024-11-09 06:23:09,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:23:09,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:23:09,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:23:09,515 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:23:09,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 06:23:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:10,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 06:23:10,084 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:23:10,658 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-09 06:23:10,658 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:23:10,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126372420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:23:10,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:23:10,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2024-11-09 06:23:10,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308804372] [2024-11-09 06:23:10,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:23:10,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:23:10,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:23:10,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:23:10,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-11-09 06:23:10,661 INFO L87 Difference]: Start difference. First operand 697 states and 984 transitions. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:23:11,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:23:11,602 INFO L93 Difference]: Finished difference Result 1338 states and 1908 transitions. [2024-11-09 06:23:11,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 06:23:11,603 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 111 [2024-11-09 06:23:11,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:23:11,607 INFO L225 Difference]: With dead ends: 1338 [2024-11-09 06:23:11,607 INFO L226 Difference]: Without dead ends: 717 [2024-11-09 06:23:11,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-11-09 06:23:11,611 INFO L432 NwaCegarLoop]: 538 mSDtfsCounter, 17 mSDsluCounter, 3759 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4297 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 06:23:11,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4297 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 06:23:11,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2024-11-09 06:23:11,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 711. [2024-11-09 06:23:11,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 683 states have (on average 1.4026354319180088) internal successors, (958), 700 states have internal predecessors, (958), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (23), 7 states have call predecessors, (23), 21 states have call successors, (23) [2024-11-09 06:23:11,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1002 transitions. [2024-11-09 06:23:11,638 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1002 transitions. Word has length 111 [2024-11-09 06:23:11,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:23:11,638 INFO L471 AbstractCegarLoop]: Abstraction has 711 states and 1002 transitions. [2024-11-09 06:23:11,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:23:11,639 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1002 transitions. [2024-11-09 06:23:11,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-09 06:23:11,640 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:23:11,640 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:23:11,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 06:23:11,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:23:11,845 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:23:11,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:23:11,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1578355961, now seen corresponding path program 1 times [2024-11-09 06:23:11,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:23:11,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679923605] [2024-11-09 06:23:11,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:23:11,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:23:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:12,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-09 06:23:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:12,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-09 06:23:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:12,357 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 06:23:12,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:23:12,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679923605] [2024-11-09 06:23:12,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679923605] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:23:12,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461596793] [2024-11-09 06:23:12,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:23:12,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:23:12,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:23:12,361 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:23:12,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 06:23:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:12,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 06:23:12,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:23:12,969 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-09 06:23:12,969 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:23:12,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461596793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:23:12,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:23:12,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-09 06:23:12,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462867975] [2024-11-09 06:23:12,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:23:12,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:23:12,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:23:12,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:23:12,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-11-09 06:23:12,979 INFO L87 Difference]: Start difference. First operand 711 states and 1002 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:23:13,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:23:13,277 INFO L93 Difference]: Finished difference Result 1348 states and 1916 transitions. [2024-11-09 06:23:13,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 06:23:13,278 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 111 [2024-11-09 06:23:13,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:23:13,285 INFO L225 Difference]: With dead ends: 1348 [2024-11-09 06:23:13,285 INFO L226 Difference]: Without dead ends: 725 [2024-11-09 06:23:13,287 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-09 06:23:13,288 INFO L432 NwaCegarLoop]: 526 mSDtfsCounter, 40 mSDsluCounter, 2358 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 2884 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 06:23:13,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 2884 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 06:23:13,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2024-11-09 06:23:13,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 715. [2024-11-09 06:23:13,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 687 states have (on average 1.4002911208151383) internal successors, (962), 704 states have internal predecessors, (962), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (23), 7 states have call predecessors, (23), 21 states have call successors, (23) [2024-11-09 06:23:13,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1006 transitions. [2024-11-09 06:23:13,321 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1006 transitions. Word has length 111 [2024-11-09 06:23:13,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:23:13,321 INFO L471 AbstractCegarLoop]: Abstraction has 715 states and 1006 transitions. [2024-11-09 06:23:13,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:23:13,321 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1006 transitions. [2024-11-09 06:23:13,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-09 06:23:13,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:23:13,322 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:23:13,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 06:23:13,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 06:23:13,527 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:23:13,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:23:13,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1129026816, now seen corresponding path program 1 times [2024-11-09 06:23:13,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:23:13,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894967306] [2024-11-09 06:23:13,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:23:13,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:23:13,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:13,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-09 06:23:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:14,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-09 06:23:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:14,028 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 06:23:14,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:23:14,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894967306] [2024-11-09 06:23:14,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894967306] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:23:14,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240444138] [2024-11-09 06:23:14,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:23:14,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:23:14,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:23:14,031 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:23:14,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 06:23:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:14,819 INFO L255 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 06:23:14,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:23:14,897 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 06:23:14,897 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:23:15,099 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 06:23:15,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240444138] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:23:15,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:23:15,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 15 [2024-11-09 06:23:15,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955149694] [2024-11-09 06:23:15,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:23:15,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 06:23:15,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:23:15,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 06:23:15,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-11-09 06:23:15,103 INFO L87 Difference]: Start difference. First operand 715 states and 1006 transitions. Second operand has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 14 states have internal predecessors, (119), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 06:23:16,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:23:16,082 INFO L93 Difference]: Finished difference Result 1316 states and 1868 transitions. [2024-11-09 06:23:16,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 06:23:16,083 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 14 states have internal predecessors, (119), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 111 [2024-11-09 06:23:16,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:23:16,088 INFO L225 Difference]: With dead ends: 1316 [2024-11-09 06:23:16,088 INFO L226 Difference]: Without dead ends: 723 [2024-11-09 06:23:16,092 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=437, Unknown=0, NotChecked=0, Total=600 [2024-11-09 06:23:16,092 INFO L432 NwaCegarLoop]: 469 mSDtfsCounter, 85 mSDsluCounter, 4551 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 5020 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 06:23:16,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 5020 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 06:23:16,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2024-11-09 06:23:16,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 719. [2024-11-09 06:23:16,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 691 states have (on average 1.4037626628075253) internal successors, (970), 708 states have internal predecessors, (970), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-09 06:23:16,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1013 transitions. [2024-11-09 06:23:16,133 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1013 transitions. Word has length 111 [2024-11-09 06:23:16,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:23:16,133 INFO L471 AbstractCegarLoop]: Abstraction has 719 states and 1013 transitions. [2024-11-09 06:23:16,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.933333333333334) internal successors, (119), 14 states have internal predecessors, (119), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 06:23:16,134 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1013 transitions. [2024-11-09 06:23:16,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-09 06:23:16,135 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:23:16,136 INFO L215 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 06:23:16,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 06:23:16,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 06:23:16,337 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:23:16,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:23:16,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1638978432, now seen corresponding path program 2 times [2024-11-09 06:23:16,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:23:16,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186982424] [2024-11-09 06:23:16,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:23:16,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:23:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:16,845 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-09 06:23:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:17,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-09 06:23:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:17,084 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 06:23:17,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:23:17,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186982424] [2024-11-09 06:23:17,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186982424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:23:17,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817461550] [2024-11-09 06:23:17,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 06:23:17,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:23:17,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:23:17,088 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:23:17,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 06:23:17,728 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 06:23:17,728 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:23:17,733 INFO L255 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 06:23:17,737 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:23:17,961 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-09 06:23:17,961 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:23:17,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817461550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:23:17,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:23:17,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2024-11-09 06:23:17,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191898459] [2024-11-09 06:23:17,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:23:17,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:23:17,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:23:17,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:23:17,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2024-11-09 06:23:17,963 INFO L87 Difference]: Start difference. First operand 719 states and 1013 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:23:18,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:23:18,333 INFO L93 Difference]: Finished difference Result 1363 states and 1940 transitions. [2024-11-09 06:23:18,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:23:18,334 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 115 [2024-11-09 06:23:18,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:23:18,337 INFO L225 Difference]: With dead ends: 1363 [2024-11-09 06:23:18,341 INFO L226 Difference]: Without dead ends: 729 [2024-11-09 06:23:18,343 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2024-11-09 06:23:18,343 INFO L432 NwaCegarLoop]: 537 mSDtfsCounter, 10 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2873 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 06:23:18,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2873 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 06:23:18,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2024-11-09 06:23:18,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 719. [2024-11-09 06:23:18,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 691 states have (on average 1.4037626628075253) internal successors, (970), 708 states have internal predecessors, (970), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-09 06:23:18,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1013 transitions. [2024-11-09 06:23:18,380 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1013 transitions. Word has length 115 [2024-11-09 06:23:18,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:23:18,381 INFO L471 AbstractCegarLoop]: Abstraction has 719 states and 1013 transitions. [2024-11-09 06:23:18,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:23:18,381 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1013 transitions. [2024-11-09 06:23:18,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-09 06:23:18,382 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:23:18,382 INFO L215 NwaCegarLoop]: trace histogram [10, 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] [2024-11-09 06:23:18,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 06:23:18,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 06:23:18,587 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:23:18,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:23:18,587 INFO L85 PathProgramCache]: Analyzing trace with hash -800838172, now seen corresponding path program 1 times [2024-11-09 06:23:18,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:23:18,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108892129] [2024-11-09 06:23:18,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:23:18,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:23:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:19,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-09 06:23:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:19,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-09 06:23:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:19,355 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 06:23:19,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:23:19,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108892129] [2024-11-09 06:23:19,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108892129] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:23:19,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771857740] [2024-11-09 06:23:19,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:23:19,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:23:19,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:23:19,362 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:23:19,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 06:23:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:20,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 06:23:20,012 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:23:20,099 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 22 proven. 37 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 06:23:20,100 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:23:28,333 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 37 proven. 8 refuted. 2 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-09 06:23:28,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771857740] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:23:28,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:23:28,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 23 [2024-11-09 06:23:28,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916396084] [2024-11-09 06:23:28,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:23:28,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 06:23:28,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:23:28,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 06:23:28,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=378, Unknown=2, NotChecked=0, Total=506 [2024-11-09 06:23:28,342 INFO L87 Difference]: Start difference. First operand 719 states and 1013 transitions. Second operand has 23 states, 23 states have (on average 5.521739130434782) internal successors, (127), 22 states have internal predecessors, (127), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 06:23:29,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:23:29,714 INFO L93 Difference]: Finished difference Result 1337 states and 1901 transitions. [2024-11-09 06:23:29,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-09 06:23:29,715 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.521739130434782) internal successors, (127), 22 states have internal predecessors, (127), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 116 [2024-11-09 06:23:29,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:23:29,719 INFO L225 Difference]: With dead ends: 1337 [2024-11-09 06:23:29,719 INFO L226 Difference]: Without dead ends: 734 [2024-11-09 06:23:29,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=344, Invalid=914, Unknown=2, NotChecked=0, Total=1260 [2024-11-09 06:23:29,722 INFO L432 NwaCegarLoop]: 469 mSDtfsCounter, 91 mSDsluCounter, 3642 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 4111 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 06:23:29,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 4111 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 06:23:29,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2024-11-09 06:23:29,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 728. [2024-11-09 06:23:29,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 700 states have (on average 1.4071428571428573) internal successors, (985), 717 states have internal predecessors, (985), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-09 06:23:29,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1028 transitions. [2024-11-09 06:23:29,746 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1028 transitions. Word has length 116 [2024-11-09 06:23:29,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:23:29,746 INFO L471 AbstractCegarLoop]: Abstraction has 728 states and 1028 transitions. [2024-11-09 06:23:29,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.521739130434782) internal successors, (127), 22 states have internal predecessors, (127), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 06:23:29,747 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1028 transitions. [2024-11-09 06:23:29,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-09 06:23:29,748 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:23:29,748 INFO L215 NwaCegarLoop]: trace histogram [19, 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] [2024-11-09 06:23:29,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 06:23:29,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:23:29,950 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:23:29,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:23:29,950 INFO L85 PathProgramCache]: Analyzing trace with hash 314447574, now seen corresponding path program 2 times [2024-11-09 06:23:29,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:23:29,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714483646] [2024-11-09 06:23:29,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:23:29,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:23:30,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:30,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-09 06:23:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:30,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-09 06:23:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:30,874 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-09 06:23:30,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:23:30,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714483646] [2024-11-09 06:23:30,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714483646] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:23:30,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105802137] [2024-11-09 06:23:30,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 06:23:30,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:23:30,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:23:30,878 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:23:30,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 06:23:32,596 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 06:23:32,597 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 06:23:32,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 06:23:32,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:23:32,928 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2024-11-09 06:23:32,928 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:23:32,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105802137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:23:32,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:23:32,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2024-11-09 06:23:32,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481185839] [2024-11-09 06:23:32,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:23:32,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 06:23:32,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:23:32,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 06:23:32,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2024-11-09 06:23:32,930 INFO L87 Difference]: Start difference. First operand 728 states and 1028 transitions. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:23:33,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:23:33,366 INFO L93 Difference]: Finished difference Result 1375 states and 1960 transitions. [2024-11-09 06:23:33,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 06:23:33,367 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 125 [2024-11-09 06:23:33,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:23:33,371 INFO L225 Difference]: With dead ends: 1375 [2024-11-09 06:23:33,371 INFO L226 Difference]: Without dead ends: 742 [2024-11-09 06:23:33,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2024-11-09 06:23:33,373 INFO L432 NwaCegarLoop]: 531 mSDtfsCounter, 13 mSDsluCounter, 3793 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4324 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 06:23:33,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4324 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 06:23:33,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2024-11-09 06:23:33,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 728. [2024-11-09 06:23:33,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 700 states have (on average 1.4071428571428573) internal successors, (985), 717 states have internal predecessors, (985), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-09 06:23:33,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1028 transitions. [2024-11-09 06:23:33,411 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1028 transitions. Word has length 125 [2024-11-09 06:23:33,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:23:33,412 INFO L471 AbstractCegarLoop]: Abstraction has 728 states and 1028 transitions. [2024-11-09 06:23:33,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 states have internal predecessors, (98), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 06:23:33,413 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1028 transitions. [2024-11-09 06:23:33,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-09 06:23:33,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:23:33,414 INFO L215 NwaCegarLoop]: trace histogram [19, 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] [2024-11-09 06:23:33,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 06:23:33,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:23:33,619 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:23:33,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:23:33,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1689399366, now seen corresponding path program 1 times [2024-11-09 06:23:33,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:23:33,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969107710] [2024-11-09 06:23:33,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:23:33,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:23:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:34,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-09 06:23:34,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:34,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-09 06:23:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:34,618 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-09 06:23:34,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:23:34,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969107710] [2024-11-09 06:23:34,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969107710] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:23:34,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028731838] [2024-11-09 06:23:34,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:23:34,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:23:34,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:23:34,622 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:23:34,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 06:23:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:35,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-09 06:23:35,519 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:23:35,704 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 107 proven. 28 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-09 06:23:35,704 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:23:48,123 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 131 refuted. 3 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-09 06:23:48,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028731838] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:23:48,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 06:23:48,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 29 [2024-11-09 06:23:48,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273864898] [2024-11-09 06:23:48,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 06:23:48,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 06:23:48,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 06:23:48,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 06:23:48,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=591, Unknown=3, NotChecked=0, Total=812 [2024-11-09 06:23:48,127 INFO L87 Difference]: Start difference. First operand 728 states and 1028 transitions. Second operand has 29 states, 29 states have (on average 4.586206896551724) internal successors, (133), 28 states have internal predecessors, (133), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 06:23:50,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:23:50,535 INFO L93 Difference]: Finished difference Result 1353 states and 1927 transitions. [2024-11-09 06:23:50,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-09 06:23:50,537 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.586206896551724) internal successors, (133), 28 states have internal predecessors, (133), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 125 [2024-11-09 06:23:50,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:23:50,541 INFO L225 Difference]: With dead ends: 1353 [2024-11-09 06:23:50,541 INFO L226 Difference]: Without dead ends: 741 [2024-11-09 06:23:50,543 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=620, Invalid=1447, Unknown=3, NotChecked=0, Total=2070 [2024-11-09 06:23:50,546 INFO L432 NwaCegarLoop]: 482 mSDtfsCounter, 66 mSDsluCounter, 5645 mSDsCounter, 0 mSdLazyCounter, 1340 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 6127 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:23:50,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 6127 Invalid, 1362 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 1340 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 06:23:50,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2024-11-09 06:23:50,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 737. [2024-11-09 06:23:50,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 709 states have (on average 1.3963328631875882) internal successors, (990), 726 states have internal predecessors, (990), 21 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (22), 7 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-09 06:23:50,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1033 transitions. [2024-11-09 06:23:50,573 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1033 transitions. Word has length 125 [2024-11-09 06:23:50,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:23:50,573 INFO L471 AbstractCegarLoop]: Abstraction has 737 states and 1033 transitions. [2024-11-09 06:23:50,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.586206896551724) internal successors, (133), 28 states have internal predecessors, (133), 2 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 06:23:50,574 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1033 transitions. [2024-11-09 06:23:50,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-09 06:23:50,574 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:23:50,575 INFO L215 NwaCegarLoop]: trace histogram [28, 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] [2024-11-09 06:23:50,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 06:23:50,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-09 06:23:50,777 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:23:50,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:23:50,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1491997888, now seen corresponding path program 2 times [2024-11-09 06:23:50,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 06:23:50,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573892031] [2024-11-09 06:23:50,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:23:50,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:23:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:51,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-09 06:23:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:52,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-11-09 06:23:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:23:52,361 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 359 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-09 06:23:52,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 06:23:52,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573892031] [2024-11-09 06:23:52,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573892031] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:23:52,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524215144] [2024-11-09 06:23:52,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 06:23:52,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:23:52,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 06:23:52,364 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:23:52,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process