./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 3061b6dc 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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 valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8bb47039b70660cfe333b6887d0f99d94255697a030b075b004d2298d7cf4777 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 06:19:19,964 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 06:19:20,014 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2024-11-19 06:19:20,020 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 06:19:20,021 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 06:19:20,045 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 06:19:20,046 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 06:19:20,046 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 06:19:20,046 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 06:19:20,047 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 06:19:20,048 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 06:19:20,048 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 06:19:20,048 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 06:19:20,048 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 06:19:20,050 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 06:19:20,050 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 06:19:20,050 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 06:19:20,050 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 06:19:20,051 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 06:19:20,051 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 06:19:20,051 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 06:19:20,054 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 06:19:20,054 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 06:19:20,054 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 06:19:20,054 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 06:19:20,054 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 06:19:20,055 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 06:19:20,055 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 06:19:20,055 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 06:19:20,055 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 06:19:20,055 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 06:19:20,055 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 06:19:20,055 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 06:19:20,056 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 06:19:20,056 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 06:19:20,056 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 06:19:20,056 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 06:19:20,056 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 06:19:20,056 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 06:19:20,057 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 06:19:20,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 06:19:20,058 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 06:19:20,058 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 06:19:20,058 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 06:19:20,058 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 06:19:20,059 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8bb47039b70660cfe333b6887d0f99d94255697a030b075b004d2298d7cf4777 [2024-11-19 06:19:20,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 06:19:20,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 06:19:20,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 06:19:20,287 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 06:19:20,287 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 06:19:20,289 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i [2024-11-19 06:19:21,488 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 06:19:21,777 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 06:19:21,778 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test9-1.i [2024-11-19 06:19:21,803 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67b817df3/2174e0c39b654ed38a8210d303ab3841/FLAGc976445bf [2024-11-19 06:19:22,052 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67b817df3/2174e0c39b654ed38a8210d303ab3841 [2024-11-19 06:19:22,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 06:19:22,055 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 06:19:22,056 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 06:19:22,056 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 06:19:22,060 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 06:19:22,060 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:19:22" (1/1) ... [2024-11-19 06:19:22,061 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d40220c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:19:22, skipping insertion in model container [2024-11-19 06:19:22,061 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:19:22" (1/1) ... [2024-11-19 06:19:22,109 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 06:19:22,610 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 06:19:22,625 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 06:19:22,627 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 06:19:22,629 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 06:19:22,632 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 06:19:22,646 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 06:19:22,646 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 06:19:22,647 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 06:19:22,648 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-19 06:19:22,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 06:19:22,659 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 06:19:22,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 06:19:22,792 INFO L204 MainTranslator]: Completed translation [2024-11-19 06:19:22,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:19:22 WrapperNode [2024-11-19 06:19:22,792 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 06:19:22,793 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 06:19:22,793 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 06:19:22,793 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 06:19:22,799 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:19:22" (1/1) ... [2024-11-19 06:19:22,837 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:19:22" (1/1) ... [2024-11-19 06:19:22,921 INFO L138 Inliner]: procedures = 177, calls = 724, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3282 [2024-11-19 06:19:22,922 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 06:19:22,923 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 06:19:22,923 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 06:19:22,923 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 06:19:22,931 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:19:22" (1/1) ... [2024-11-19 06:19:22,932 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:19:22" (1/1) ... [2024-11-19 06:19:22,945 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:19:22" (1/1) ... [2024-11-19 06:19:23,004 INFO L175 MemorySlicer]: Split 208 memory accesses to 3 slices as follows [2, 172, 34]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 46 writes are split as follows [0, 42, 4]. [2024-11-19 06:19:23,004 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:19:22" (1/1) ... [2024-11-19 06:19:23,005 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:19:22" (1/1) ... [2024-11-19 06:19:23,036 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:19:22" (1/1) ... [2024-11-19 06:19:23,057 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:19:22" (1/1) ... [2024-11-19 06:19:23,066 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:19:22" (1/1) ... [2024-11-19 06:19:23,075 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:19:22" (1/1) ... [2024-11-19 06:19:23,089 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 06:19:23,090 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 06:19:23,090 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 06:19:23,090 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 06:19:23,091 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:19:22" (1/1) ... [2024-11-19 06:19:23,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 06:19:23,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:19:23,119 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) [2024-11-19 06:19:23,124 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 [2024-11-19 06:19:23,160 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-11-19 06:19:23,161 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-11-19 06:19:23,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 06:19:23,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 06:19:23,161 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 06:19:23,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-19 06:19:23,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-19 06:19:23,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 06:19:23,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 06:19:23,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 06:19:23,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-19 06:19:23,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-19 06:19:23,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-19 06:19:23,163 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-19 06:19:23,163 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-19 06:19:23,163 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-19 06:19:23,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 06:19:23,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 06:19:23,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-19 06:19:23,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-19 06:19:23,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-19 06:19:23,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 06:19:23,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-19 06:19:23,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-19 06:19:23,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-19 06:19:23,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 06:19:23,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 06:19:23,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 06:19:23,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 06:19:23,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 06:19:23,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 06:19:23,323 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 06:19:23,324 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 06:19:25,231 INFO L? ?]: Removed 799 outVars from TransFormulas that were not future-live. [2024-11-19 06:19:25,231 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 06:19:25,263 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 06:19:25,263 INFO L316 CfgBuilder]: Removed 54 assume(true) statements. [2024-11-19 06:19:25,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:19:25 BoogieIcfgContainer [2024-11-19 06:19:25,264 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 06:19:25,266 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 06:19:25,266 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 06:19:25,269 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 06:19:25,269 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:19:22" (1/3) ... [2024-11-19 06:19:25,270 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e47f1df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:19:25, skipping insertion in model container [2024-11-19 06:19:25,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:19:22" (2/3) ... [2024-11-19 06:19:25,270 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e47f1df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:19:25, skipping insertion in model container [2024-11-19 06:19:25,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:19:25" (3/3) ... [2024-11-19 06:19:25,272 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test9-1.i [2024-11-19 06:19:25,285 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 06:19:25,285 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-19 06:19:25,339 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 06:19:25,344 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=None, 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;@4f79d9e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 06:19:25,344 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-19 06:19:25,350 INFO L276 IsEmpty]: Start isEmpty. Operand has 1375 states, 864 states have (on average 1.8391203703703705) internal successors, (1589), 1368 states have internal predecessors, (1589), 505 states have call successors, (505), 3 states have call predecessors, (505), 3 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) [2024-11-19 06:19:25,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-19 06:19:25,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:19:25,355 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:19:25,355 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-19 06:19:25,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:19:25,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1582134003, now seen corresponding path program 1 times [2024-11-19 06:19:25,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:19:25,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008009230] [2024-11-19 06:19:25,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:19:25,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:19:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:19:25,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:19:25,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:19:25,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008009230] [2024-11-19 06:19:25,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008009230] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:19:25,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:19:25,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:19:25,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393934389] [2024-11-19 06:19:25,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:19:25,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 06:19:25,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:19:25,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 06:19:25,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 06:19:25,519 INFO L87 Difference]: Start difference. First operand has 1375 states, 864 states have (on average 1.8391203703703705) internal successors, (1589), 1368 states have internal predecessors, (1589), 505 states have call successors, (505), 3 states have call predecessors, (505), 3 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2024-11-19 06:19:25,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:19:25,632 INFO L93 Difference]: Finished difference Result 1373 states and 2536 transitions. [2024-11-19 06:19:25,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 06:19:25,636 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2024-11-19 06:19:25,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:19:25,661 INFO L225 Difference]: With dead ends: 1373 [2024-11-19 06:19:25,661 INFO L226 Difference]: Without dead ends: 1371 [2024-11-19 06:19:25,662 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 [2024-11-19 06:19:25,664 INFO L432 NwaCegarLoop]: 2536 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, 2536 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 [2024-11-19 06:19:25,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2536 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:19:25,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2024-11-19 06:19:25,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1371. [2024-11-19 06:19:25,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1371 states, 862 states have (on average 1.7703016241299303) internal successors, (1526), 1364 states have internal predecessors, (1526), 505 states have call successors, (505), 3 states have call predecessors, (505), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2024-11-19 06:19:25,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 2534 transitions. [2024-11-19 06:19:25,868 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 2534 transitions. Word has length 7 [2024-11-19 06:19:25,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:19:25,868 INFO L471 AbstractCegarLoop]: Abstraction has 1371 states and 2534 transitions. [2024-11-19 06:19:25,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2024-11-19 06:19:25,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 2534 transitions. [2024-11-19 06:19:25,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-19 06:19:25,869 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:19:25,869 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:19:25,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 06:19:25,870 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-19 06:19:25,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:19:25,870 INFO L85 PathProgramCache]: Analyzing trace with hash -940141398, now seen corresponding path program 1 times [2024-11-19 06:19:25,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:19:25,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046211732] [2024-11-19 06:19:25,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:19:25,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:19:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:19:26,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:19:26,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:19:26,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046211732] [2024-11-19 06:19:26,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046211732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:19:26,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:19:26,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 06:19:26,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270037788] [2024-11-19 06:19:26,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:19:26,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:19:26,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:19:26,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:19:26,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:19:26,016 INFO L87 Difference]: Start difference. First operand 1371 states and 2534 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2024-11-19 06:19:26,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:19:26,672 INFO L93 Difference]: Finished difference Result 2725 states and 5052 transitions. [2024-11-19 06:19:26,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:19:26,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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 [2024-11-19 06:19:26,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:19:26,684 INFO L225 Difference]: With dead ends: 2725 [2024-11-19 06:19:26,684 INFO L226 Difference]: Without dead ends: 2725 [2024-11-19 06:19:26,684 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 [2024-11-19 06:19:26,685 INFO L432 NwaCegarLoop]: 2623 mSDtfsCounter, 1508 mSDsluCounter, 4630 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2011 SdHoareTripleChecker+Valid, 7253 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 06:19:26,685 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2011 Valid, 7253 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 06:19:26,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2725 states. [2024-11-19 06:19:26,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2725 to 1373. [2024-11-19 06:19:26,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 864 states have (on average 1.7685185185185186) internal successors, (1528), 1366 states have internal predecessors, (1528), 505 states have call successors, (505), 3 states have call predecessors, (505), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2024-11-19 06:19:26,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 2536 transitions. [2024-11-19 06:19:26,899 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 2536 transitions. Word has length 9 [2024-11-19 06:19:26,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:19:26,901 INFO L471 AbstractCegarLoop]: Abstraction has 1373 states and 2536 transitions. [2024-11-19 06:19:26,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2024-11-19 06:19:26,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 2536 transitions. [2024-11-19 06:19:26,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-19 06:19:26,904 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:19:26,904 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:19:26,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 06:19:26,905 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-19 06:19:26,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:19:26,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1595289559, now seen corresponding path program 1 times [2024-11-19 06:19:26,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:19:26,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008695897] [2024-11-19 06:19:26,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:19:26,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:19:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:19:27,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:19:27,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:19:27,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008695897] [2024-11-19 06:19:27,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008695897] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:19:27,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:19:27,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 06:19:27,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508166505] [2024-11-19 06:19:27,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:19:27,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:19:27,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:19:27,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:19:27,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:19:27,194 INFO L87 Difference]: Start difference. First operand 1373 states and 2536 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2024-11-19 06:19:27,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:19:27,280 INFO L93 Difference]: Finished difference Result 1331 states and 2459 transitions. [2024-11-19 06:19:27,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:19:27,281 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 85 [2024-11-19 06:19:27,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:19:27,288 INFO L225 Difference]: With dead ends: 1331 [2024-11-19 06:19:27,288 INFO L226 Difference]: Without dead ends: 1331 [2024-11-19 06:19:27,290 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 [2024-11-19 06:19:27,291 INFO L432 NwaCegarLoop]: 2429 mSDtfsCounter, 36 mSDsluCounter, 4844 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 7273 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:19:27,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 7273 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:19:27,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2024-11-19 06:19:27,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1331. [2024-11-19 06:19:27,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1331 states, 822 states have (on average 1.7652068126520681) internal successors, (1451), 1324 states have internal predecessors, (1451), 505 states have call successors, (505), 3 states have call predecessors, (505), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2024-11-19 06:19:27,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 2459 transitions. [2024-11-19 06:19:27,400 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 2459 transitions. Word has length 85 [2024-11-19 06:19:27,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:19:27,400 INFO L471 AbstractCegarLoop]: Abstraction has 1331 states and 2459 transitions. [2024-11-19 06:19:27,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2024-11-19 06:19:27,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 2459 transitions. [2024-11-19 06:19:27,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-19 06:19:27,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:19:27,405 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:19:27,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 06:19:27,405 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-19 06:19:27,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:19:27,407 INFO L85 PathProgramCache]: Analyzing trace with hash -820400491, now seen corresponding path program 1 times [2024-11-19 06:19:27,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:19:27,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298340138] [2024-11-19 06:19:27,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:19:27,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:19:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:19:27,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:19:27,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:19:27,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298340138] [2024-11-19 06:19:27,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298340138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:19:27,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:19:27,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 06:19:27,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755057391] [2024-11-19 06:19:27,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:19:27,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:19:27,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:19:27,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:19:27,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:19:27,567 INFO L87 Difference]: Start difference. First operand 1331 states and 2459 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2024-11-19 06:19:27,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:19:27,631 INFO L93 Difference]: Finished difference Result 1325 states and 2449 transitions. [2024-11-19 06:19:27,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:19:27,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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 85 [2024-11-19 06:19:27,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:19:27,639 INFO L225 Difference]: With dead ends: 1325 [2024-11-19 06:19:27,639 INFO L226 Difference]: Without dead ends: 1325 [2024-11-19 06:19:27,639 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 [2024-11-19 06:19:27,640 INFO L432 NwaCegarLoop]: 2431 mSDtfsCounter, 9 mSDsluCounter, 4843 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 7274 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:19:27,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 7274 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:19:27,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2024-11-19 06:19:27,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1325. [2024-11-19 06:19:27,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1325 states, 816 states have (on average 1.7659313725490196) internal successors, (1441), 1318 states have internal predecessors, (1441), 505 states have call successors, (505), 3 states have call predecessors, (505), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2024-11-19 06:19:27,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 2449 transitions. [2024-11-19 06:19:27,720 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 2449 transitions. Word has length 85 [2024-11-19 06:19:27,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:19:27,721 INFO L471 AbstractCegarLoop]: Abstraction has 1325 states and 2449 transitions. [2024-11-19 06:19:27,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2024-11-19 06:19:27,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 2449 transitions. [2024-11-19 06:19:27,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-19 06:19:27,724 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:19:27,724 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:19:27,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 06:19:27,724 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-19 06:19:27,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:19:27,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1922320029, now seen corresponding path program 1 times [2024-11-19 06:19:27,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:19:27,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251096960] [2024-11-19 06:19:27,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:19:27,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:19:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:19:27,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 06:19:27,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:19:27,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251096960] [2024-11-19 06:19:27,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251096960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:19:27,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:19:27,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:19:27,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646612677] [2024-11-19 06:19:27,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:19:27,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:19:27,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:19:27,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:19:27,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:19:27,833 INFO L87 Difference]: Start difference. First operand 1325 states and 2449 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-11-19 06:19:27,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:19:27,908 INFO L93 Difference]: Finished difference Result 2546 states and 4764 transitions. [2024-11-19 06:19:27,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:19:27,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 85 [2024-11-19 06:19:27,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:19:27,919 INFO L225 Difference]: With dead ends: 2546 [2024-11-19 06:19:27,919 INFO L226 Difference]: Without dead ends: 2546 [2024-11-19 06:19:27,919 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 [2024-11-19 06:19:27,920 INFO L432 NwaCegarLoop]: 2654 mSDtfsCounter, 1259 mSDsluCounter, 2433 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1759 SdHoareTripleChecker+Valid, 5087 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:19:27,920 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1759 Valid, 5087 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:19:27,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2024-11-19 06:19:28,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 2542. [2024-11-19 06:19:28,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2542 states, 1533 states have (on average 1.7958251793868232) internal successors, (2753), 2535 states have internal predecessors, (2753), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2024-11-19 06:19:28,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2542 states to 2542 states and 4761 transitions. [2024-11-19 06:19:28,104 INFO L78 Accepts]: Start accepts. Automaton has 2542 states and 4761 transitions. Word has length 85 [2024-11-19 06:19:28,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:19:28,105 INFO L471 AbstractCegarLoop]: Abstraction has 2542 states and 4761 transitions. [2024-11-19 06:19:28,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-11-19 06:19:28,105 INFO L276 IsEmpty]: Start isEmpty. Operand 2542 states and 4761 transitions. [2024-11-19 06:19:28,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-19 06:19:28,106 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:19:28,106 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] [2024-11-19 06:19:28,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 06:19:28,107 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-19 06:19:28,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:19:28,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1699085116, now seen corresponding path program 1 times [2024-11-19 06:19:28,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:19:28,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9513435] [2024-11-19 06:19:28,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:19:28,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:19:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:19:28,344 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 06:19:28,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:19:28,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9513435] [2024-11-19 06:19:28,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9513435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:19:28,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:19:28,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 06:19:28,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487998469] [2024-11-19 06:19:28,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:19:28,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:19:28,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:19:28,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:19:28,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:19:28,347 INFO L87 Difference]: Start difference. First operand 2542 states and 4761 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, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 06:19:28,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:19:28,880 INFO L93 Difference]: Finished difference Result 4769 states and 9085 transitions. [2024-11-19 06:19:28,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:19:28,880 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, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 100 [2024-11-19 06:19:28,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:19:28,898 INFO L225 Difference]: With dead ends: 4769 [2024-11-19 06:19:28,899 INFO L226 Difference]: Without dead ends: 4769 [2024-11-19 06:19:28,899 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 [2024-11-19 06:19:28,900 INFO L432 NwaCegarLoop]: 2657 mSDtfsCounter, 1417 mSDsluCounter, 4577 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1920 SdHoareTripleChecker+Valid, 7234 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 06:19:28,900 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1920 Valid, 7234 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 06:19:28,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4769 states. [2024-11-19 06:19:29,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4769 to 2544. [2024-11-19 06:19:29,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2544 states, 1535 states have (on average 1.794788273615635) internal successors, (2755), 2537 states have internal predecessors, (2755), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2024-11-19 06:19:29,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2544 states to 2544 states and 4763 transitions. [2024-11-19 06:19:29,273 INFO L78 Accepts]: Start accepts. Automaton has 2544 states and 4763 transitions. Word has length 100 [2024-11-19 06:19:29,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:19:29,274 INFO L471 AbstractCegarLoop]: Abstraction has 2544 states and 4763 transitions. [2024-11-19 06:19:29,274 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, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 06:19:29,274 INFO L276 IsEmpty]: Start isEmpty. Operand 2544 states and 4763 transitions. [2024-11-19 06:19:29,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-19 06:19:29,278 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:19:29,278 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:19:29,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 06:19:29,278 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-19 06:19:29,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:19:29,279 INFO L85 PathProgramCache]: Analyzing trace with hash -542448974, now seen corresponding path program 1 times [2024-11-19 06:19:29,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:19:29,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583538452] [2024-11-19 06:19:29,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:19:29,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:19:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:19:29,532 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 06:19:29,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:19:29,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583538452] [2024-11-19 06:19:29,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583538452] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:19:29,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:19:29,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 06:19:29,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721108189] [2024-11-19 06:19:29,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:19:29,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 06:19:29,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:19:29,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 06:19:29,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:19:29,535 INFO L87 Difference]: Start difference. First operand 2544 states and 4763 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 06:19:29,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:19:29,614 INFO L93 Difference]: Finished difference Result 2460 states and 4609 transitions. [2024-11-19 06:19:29,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:19:29,614 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 157 [2024-11-19 06:19:29,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:19:29,624 INFO L225 Difference]: With dead ends: 2460 [2024-11-19 06:19:29,624 INFO L226 Difference]: Without dead ends: 2460 [2024-11-19 06:19:29,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:19:29,626 INFO L432 NwaCegarLoop]: 2342 mSDtfsCounter, 41 mSDsluCounter, 4670 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 7012 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:19:29,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 7012 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:19:29,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2024-11-19 06:19:29,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 2460. [2024-11-19 06:19:29,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2460 states, 1451 states have (on average 1.7925568573397657) internal successors, (2601), 2453 states have internal predecessors, (2601), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2024-11-19 06:19:29,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2460 states to 2460 states and 4609 transitions. [2024-11-19 06:19:29,836 INFO L78 Accepts]: Start accepts. Automaton has 2460 states and 4609 transitions. Word has length 157 [2024-11-19 06:19:29,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:19:29,840 INFO L471 AbstractCegarLoop]: Abstraction has 2460 states and 4609 transitions. [2024-11-19 06:19:29,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 06:19:29,841 INFO L276 IsEmpty]: Start isEmpty. Operand 2460 states and 4609 transitions. [2024-11-19 06:19:29,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-19 06:19:29,841 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:19:29,842 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:19:29,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 06:19:29,842 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-19 06:19:29,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:19:29,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1086705184, now seen corresponding path program 1 times [2024-11-19 06:19:29,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:19:29,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689416334] [2024-11-19 06:19:29,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:19:29,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:19:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:19:29,998 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 06:19:29,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:19:29,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689416334] [2024-11-19 06:19:29,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689416334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:19:29,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:19:29,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 06:19:29,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532700678] [2024-11-19 06:19:29,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:19:30,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:19:30,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:19:30,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:19:30,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:19:30,001 INFO L87 Difference]: Start difference. First operand 2460 states and 4609 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 06:19:30,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:19:30,061 INFO L93 Difference]: Finished difference Result 2448 states and 4589 transitions. [2024-11-19 06:19:30,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:19:30,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 157 [2024-11-19 06:19:30,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:19:30,076 INFO L225 Difference]: With dead ends: 2448 [2024-11-19 06:19:30,076 INFO L226 Difference]: Without dead ends: 2448 [2024-11-19 06:19:30,077 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 [2024-11-19 06:19:30,077 INFO L432 NwaCegarLoop]: 2344 mSDtfsCounter, 9 mSDsluCounter, 4669 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 7013 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:19:30,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 7013 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:19:30,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2448 states. [2024-11-19 06:19:30,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2448 to 2448. [2024-11-19 06:19:30,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2448 states, 1439 states have (on average 1.7936066712995136) internal successors, (2581), 2441 states have internal predecessors, (2581), 1005 states have call successors, (1005), 3 states have call predecessors, (1005), 2 states have return successors, (1003), 5 states have call predecessors, (1003), 1003 states have call successors, (1003) [2024-11-19 06:19:30,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 4589 transitions. [2024-11-19 06:19:30,267 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 4589 transitions. Word has length 157 [2024-11-19 06:19:30,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:19:30,267 INFO L471 AbstractCegarLoop]: Abstraction has 2448 states and 4589 transitions. [2024-11-19 06:19:30,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 06:19:30,268 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 4589 transitions. [2024-11-19 06:19:30,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-19 06:19:30,269 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:19:30,269 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:19:30,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 06:19:30,270 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-19 06:19:30,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:19:30,270 INFO L85 PathProgramCache]: Analyzing trace with hash -342155800, now seen corresponding path program 1 times [2024-11-19 06:19:30,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:19:30,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973262854] [2024-11-19 06:19:30,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:19:30,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:19:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:19:30,467 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 06:19:30,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:19:30,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973262854] [2024-11-19 06:19:30,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973262854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:19:30,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:19:30,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 06:19:30,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130209701] [2024-11-19 06:19:30,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:19:30,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 06:19:30,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:19:30,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 06:19:30,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:19:30,468 INFO L87 Difference]: Start difference. First operand 2448 states and 4589 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 06:19:32,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:19:32,312 INFO L93 Difference]: Finished difference Result 2531 states and 4696 transitions. [2024-11-19 06:19:32,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:19:32,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 157 [2024-11-19 06:19:32,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:19:32,325 INFO L225 Difference]: With dead ends: 2531 [2024-11-19 06:19:32,325 INFO L226 Difference]: Without dead ends: 2531 [2024-11-19 06:19:32,325 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:19:32,326 INFO L432 NwaCegarLoop]: 2504 mSDtfsCounter, 4968 mSDsluCounter, 2546 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 1427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5469 SdHoareTripleChecker+Valid, 5050 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1427 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-19 06:19:32,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5469 Valid, 5050 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1427 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-19 06:19:32,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2531 states. [2024-11-19 06:19:32,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2531 to 1360. [2024-11-19 06:19:32,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 851 states have (on average 1.7179788484136311) internal successors, (1462), 1353 states have internal predecessors, (1462), 505 states have call successors, (505), 3 states have call predecessors, (505), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2024-11-19 06:19:32,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 2470 transitions. [2024-11-19 06:19:32,556 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 2470 transitions. Word has length 157 [2024-11-19 06:19:32,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:19:32,556 INFO L471 AbstractCegarLoop]: Abstraction has 1360 states and 2470 transitions. [2024-11-19 06:19:32,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 06:19:32,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 2470 transitions. [2024-11-19 06:19:32,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-19 06:19:32,557 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:19:32,558 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:19:32,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 06:19:32,558 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-19 06:19:32,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:19:32,558 INFO L85 PathProgramCache]: Analyzing trace with hash -562105860, now seen corresponding path program 1 times [2024-11-19 06:19:32,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:19:32,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650313131] [2024-11-19 06:19:32,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:19:32,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:19:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:19:33,091 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 06:19:33,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:19:33,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650313131] [2024-11-19 06:19:33,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650313131] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:19:33,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112467348] [2024-11-19 06:19:33,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:19:33,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:19:33,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:19:33,094 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) [2024-11-19 06:19:33,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 06:19:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:19:33,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 772 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 06:19:33,367 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:19:33,389 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 [2024-11-19 06:19:33,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 06:19:33,604 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 06:19:33,606 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:19:33,765 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 06:19:33,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112467348] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:19:33,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:19:33,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 12 [2024-11-19 06:19:33,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110763652] [2024-11-19 06:19:33,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:19:33,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 06:19:33,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:19:33,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 06:19:33,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-19 06:19:33,768 INFO L87 Difference]: Start difference. First operand 1360 states and 2470 transitions. Second operand has 12 states, 12 states have (on average 27.333333333333332) internal successors, (328), 12 states have internal predecessors, (328), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-19 06:19:37,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:19:37,814 INFO L93 Difference]: Finished difference Result 4058 states and 7393 transitions. [2024-11-19 06:19:37,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 06:19:37,815 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 27.333333333333332) internal successors, (328), 12 states have internal predecessors, (328), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 167 [2024-11-19 06:19:37,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:19:37,824 INFO L225 Difference]: With dead ends: 4058 [2024-11-19 06:19:37,824 INFO L226 Difference]: Without dead ends: 4058 [2024-11-19 06:19:37,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 326 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-19 06:19:37,825 INFO L432 NwaCegarLoop]: 2020 mSDtfsCounter, 7298 mSDsluCounter, 10030 mSDsCounter, 0 mSdLazyCounter, 4631 mSolverCounterSat, 1511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8302 SdHoareTripleChecker+Valid, 12050 SdHoareTripleChecker+Invalid, 6142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1511 IncrementalHoareTripleChecker+Valid, 4631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-19 06:19:37,825 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8302 Valid, 12050 Invalid, 6142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1511 Valid, 4631 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-19 06:19:37,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4058 states. [2024-11-19 06:19:38,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4058 to 1695. [2024-11-19 06:19:38,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 1182 states have (on average 1.6065989847715736) internal successors, (1899), 1684 states have internal predecessors, (1899), 508 states have call successors, (508), 4 states have call predecessors, (508), 3 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2024-11-19 06:19:38,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2913 transitions. [2024-11-19 06:19:38,084 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2913 transitions. Word has length 167 [2024-11-19 06:19:38,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:19:38,084 INFO L471 AbstractCegarLoop]: Abstraction has 1695 states and 2913 transitions. [2024-11-19 06:19:38,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.333333333333332) internal successors, (328), 12 states have internal predecessors, (328), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-19 06:19:38,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2913 transitions. [2024-11-19 06:19:38,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2024-11-19 06:19:38,087 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:19:38,088 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:19:38,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 06:19:38,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-19 06:19:38,289 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-19 06:19:38,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:19:38,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1112616957, now seen corresponding path program 1 times [2024-11-19 06:19:38,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:19:38,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320456604] [2024-11-19 06:19:38,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:19:38,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:19:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:19:40,904 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 06:19:40,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:19:40,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320456604] [2024-11-19 06:19:40,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320456604] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:19:40,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584709667] [2024-11-19 06:19:40,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:19:40,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:19:40,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:19:40,907 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) [2024-11-19 06:19:40,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 06:19:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:19:41,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 1903 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-19 06:19:41,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:19:41,405 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 [2024-11-19 06:19:41,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 06:19:41,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 06:19:41,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 06:19:41,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 06:19:41,853 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 06:19:41,853 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:19:42,298 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 06:19:42,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584709667] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:19:42,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:19:42,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 8] total 24 [2024-11-19 06:19:42,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553064447] [2024-11-19 06:19:42,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:19:42,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 06:19:42,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:19:42,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 06:19:42,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=370, Unknown=0, NotChecked=0, Total=552 [2024-11-19 06:19:42,301 INFO L87 Difference]: Start difference. First operand 1695 states and 2913 transitions. Second operand has 24 states, 24 states have (on average 42.166666666666664) internal successors, (1012), 24 states have internal predecessors, (1012), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-19 06:19:54,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:19:54,102 INFO L93 Difference]: Finished difference Result 9330 states and 17083 transitions. [2024-11-19 06:19:54,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-19 06:19:54,103 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 42.166666666666664) internal successors, (1012), 24 states have internal predecessors, (1012), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 395 [2024-11-19 06:19:54,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:19:54,120 INFO L225 Difference]: With dead ends: 9330 [2024-11-19 06:19:54,121 INFO L226 Difference]: Without dead ends: 9330 [2024-11-19 06:19:54,121 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 813 GetRequests, 779 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=318, Invalid=738, Unknown=0, NotChecked=0, Total=1056 [2024-11-19 06:19:54,122 INFO L432 NwaCegarLoop]: 6836 mSDtfsCounter, 15948 mSDsluCounter, 41249 mSDsCounter, 0 mSdLazyCounter, 20230 mSolverCounterSat, 3522 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18958 SdHoareTripleChecker+Valid, 48085 SdHoareTripleChecker+Invalid, 23752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3522 IncrementalHoareTripleChecker+Valid, 20230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:19:54,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18958 Valid, 48085 Invalid, 23752 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3522 Valid, 20230 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2024-11-19 06:19:54,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9330 states. [2024-11-19 06:19:54,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9330 to 2523. [2024-11-19 06:19:54,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2004 states have (on average 1.4895209580838322) internal successors, (2985), 2506 states have internal predecessors, (2985), 514 states have call successors, (514), 4 states have call predecessors, (514), 3 states have return successors, (512), 13 states have call predecessors, (512), 512 states have call successors, (512) [2024-11-19 06:19:54,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 4011 transitions. [2024-11-19 06:19:54,706 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 4011 transitions. Word has length 395 [2024-11-19 06:19:54,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:19:54,707 INFO L471 AbstractCegarLoop]: Abstraction has 2523 states and 4011 transitions. [2024-11-19 06:19:54,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 42.166666666666664) internal successors, (1012), 24 states have internal predecessors, (1012), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-19 06:19:54,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 4011 transitions. [2024-11-19 06:19:54,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 852 [2024-11-19 06:19:54,718 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:19:54,718 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:19:54,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-19 06:19:54,919 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,SelfDestructingSolverStorable10 [2024-11-19 06:19:54,919 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-19 06:19:54,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:19:54,921 INFO L85 PathProgramCache]: Analyzing trace with hash 178662801, now seen corresponding path program 2 times [2024-11-19 06:19:54,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:19:54,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540199790] [2024-11-19 06:19:54,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:19:54,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:19:55,146 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 06:19:55,146 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:19:55,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3426 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3426 trivial. 0 not checked. [2024-11-19 06:19:55,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:19:55,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540199790] [2024-11-19 06:19:55,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540199790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:19:55,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:19:55,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 06:19:55,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393481518] [2024-11-19 06:19:55,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:19:55,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 06:19:55,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:19:55,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 06:19:55,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:19:55,354 INFO L87 Difference]: Start difference. First operand 2523 states and 4011 transitions. Second operand has 8 states, 8 states have (on average 20.125) internal successors, (161), 8 states have internal predecessors, (161), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 06:19:55,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:19:55,670 INFO L93 Difference]: Finished difference Result 2528 states and 4016 transitions. [2024-11-19 06:19:55,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 06:19:55,671 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.125) internal successors, (161), 8 states have internal predecessors, (161), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 851 [2024-11-19 06:19:55,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:19:55,675 INFO L225 Difference]: With dead ends: 2528 [2024-11-19 06:19:55,676 INFO L226 Difference]: Without dead ends: 2528 [2024-11-19 06:19:55,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-19 06:19:55,676 INFO L432 NwaCegarLoop]: 2337 mSDtfsCounter, 34 mSDsluCounter, 13597 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 15934 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 06:19:55,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 15934 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 06:19:55,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2528 states. [2024-11-19 06:19:55,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2528 to 2527. [2024-11-19 06:19:55,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2527 states, 2008 states have (on average 1.4885458167330676) internal successors, (2989), 2510 states have internal predecessors, (2989), 514 states have call successors, (514), 4 states have call predecessors, (514), 3 states have return successors, (512), 13 states have call predecessors, (512), 512 states have call successors, (512) [2024-11-19 06:19:55,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2527 states to 2527 states and 4015 transitions. [2024-11-19 06:19:55,766 INFO L78 Accepts]: Start accepts. Automaton has 2527 states and 4015 transitions. Word has length 851 [2024-11-19 06:19:55,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:19:55,767 INFO L471 AbstractCegarLoop]: Abstraction has 2527 states and 4015 transitions. [2024-11-19 06:19:55,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.125) internal successors, (161), 8 states have internal predecessors, (161), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 06:19:55,767 INFO L276 IsEmpty]: Start isEmpty. Operand 2527 states and 4015 transitions. [2024-11-19 06:19:55,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 853 [2024-11-19 06:19:55,781 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:19:55,781 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 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] [2024-11-19 06:19:55,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 06:19:55,781 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-19 06:19:55,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:19:55,782 INFO L85 PathProgramCache]: Analyzing trace with hash 2043642823, now seen corresponding path program 1 times [2024-11-19 06:19:55,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:19:55,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256184807] [2024-11-19 06:19:55,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:19:55,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:19:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:19:58,195 INFO L134 CoverageAnalysis]: Checked inductivity of 3426 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3426 trivial. 0 not checked. [2024-11-19 06:19:58,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:19:58,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256184807] [2024-11-19 06:19:58,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256184807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:19:58,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:19:58,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 06:19:58,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819460134] [2024-11-19 06:19:58,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:19:58,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 06:19:58,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:19:58,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 06:19:58,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:19:58,199 INFO L87 Difference]: Start difference. First operand 2527 states and 4015 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 06:19:58,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:19:58,449 INFO L93 Difference]: Finished difference Result 2532 states and 4021 transitions. [2024-11-19 06:19:58,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 06:19:58,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 852 [2024-11-19 06:19:58,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:19:58,454 INFO L225 Difference]: With dead ends: 2532 [2024-11-19 06:19:58,455 INFO L226 Difference]: Without dead ends: 2532 [2024-11-19 06:19:58,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:19:58,455 INFO L432 NwaCegarLoop]: 2344 mSDtfsCounter, 9 mSDsluCounter, 9077 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 11421 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:19:58,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 11421 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:19:58,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2024-11-19 06:19:58,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 2531. [2024-11-19 06:19:58,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2531 states, 2012 states have (on average 1.4880715705765408) internal successors, (2994), 2514 states have internal predecessors, (2994), 514 states have call successors, (514), 4 states have call predecessors, (514), 3 states have return successors, (512), 13 states have call predecessors, (512), 512 states have call successors, (512) [2024-11-19 06:19:58,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2531 states to 2531 states and 4020 transitions. [2024-11-19 06:19:58,550 INFO L78 Accepts]: Start accepts. Automaton has 2531 states and 4020 transitions. Word has length 852 [2024-11-19 06:19:58,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:19:58,550 INFO L471 AbstractCegarLoop]: Abstraction has 2531 states and 4020 transitions. [2024-11-19 06:19:58,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 06:19:58,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2531 states and 4020 transitions. [2024-11-19 06:19:58,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 853 [2024-11-19 06:19:58,556 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:19:58,556 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 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] [2024-11-19 06:19:58,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 06:19:58,557 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-19 06:19:58,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:19:58,557 INFO L85 PathProgramCache]: Analyzing trace with hash 85822555, now seen corresponding path program 1 times [2024-11-19 06:19:58,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:19:58,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278826306] [2024-11-19 06:19:58,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:19:58,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:19:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:20:00,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3426 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3426 trivial. 0 not checked. [2024-11-19 06:20:00,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:20:00,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278826306] [2024-11-19 06:20:00,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278826306] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:20:00,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:20:00,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 06:20:00,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354037537] [2024-11-19 06:20:00,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:20:00,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 06:20:00,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:20:00,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 06:20:00,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:20:00,296 INFO L87 Difference]: Start difference. First operand 2531 states and 4020 transitions. Second operand has 8 states, 8 states have (on average 20.25) internal successors, (162), 8 states have internal predecessors, (162), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 06:20:00,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:20:00,498 INFO L93 Difference]: Finished difference Result 2536 states and 4026 transitions. [2024-11-19 06:20:00,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 06:20:00,499 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.25) internal successors, (162), 8 states have internal predecessors, (162), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 852 [2024-11-19 06:20:00,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:20:00,505 INFO L225 Difference]: With dead ends: 2536 [2024-11-19 06:20:00,505 INFO L226 Difference]: Without dead ends: 2536 [2024-11-19 06:20:00,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:20:00,506 INFO L432 NwaCegarLoop]: 2337 mSDtfsCounter, 10 mSDsluCounter, 11368 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 13705 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:20:00,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 13705 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:20:00,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2536 states. [2024-11-19 06:20:00,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2536 to 2531. [2024-11-19 06:20:00,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2531 states, 2012 states have (on average 1.4880715705765408) internal successors, (2994), 2514 states have internal predecessors, (2994), 514 states have call successors, (514), 4 states have call predecessors, (514), 3 states have return successors, (512), 13 states have call predecessors, (512), 512 states have call successors, (512) [2024-11-19 06:20:00,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2531 states to 2531 states and 4020 transitions. [2024-11-19 06:20:00,600 INFO L78 Accepts]: Start accepts. Automaton has 2531 states and 4020 transitions. Word has length 852 [2024-11-19 06:20:00,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:20:00,601 INFO L471 AbstractCegarLoop]: Abstraction has 2531 states and 4020 transitions. [2024-11-19 06:20:00,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.25) internal successors, (162), 8 states have internal predecessors, (162), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 06:20:00,602 INFO L276 IsEmpty]: Start isEmpty. Operand 2531 states and 4020 transitions. [2024-11-19 06:20:00,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 854 [2024-11-19 06:20:00,607 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:20:00,608 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 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] [2024-11-19 06:20:00,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 06:20:00,608 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-19 06:20:00,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:20:00,609 INFO L85 PathProgramCache]: Analyzing trace with hash -834404803, now seen corresponding path program 1 times [2024-11-19 06:20:00,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:20:00,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036792131] [2024-11-19 06:20:00,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:20:00,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:20:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:20:02,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3426 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3426 trivial. 0 not checked. [2024-11-19 06:20:02,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:20:02,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036792131] [2024-11-19 06:20:02,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036792131] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:20:02,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:20:02,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 06:20:02,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769312034] [2024-11-19 06:20:02,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:20:02,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 06:20:02,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:20:02,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 06:20:02,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-19 06:20:02,411 INFO L87 Difference]: Start difference. First operand 2531 states and 4020 transitions. Second operand has 9 states, 9 states have (on average 18.11111111111111) internal successors, (163), 9 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 06:20:02,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:20:02,773 INFO L93 Difference]: Finished difference Result 2542 states and 4034 transitions. [2024-11-19 06:20:02,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 06:20:02,774 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.11111111111111) internal successors, (163), 9 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 853 [2024-11-19 06:20:02,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:20:02,778 INFO L225 Difference]: With dead ends: 2542 [2024-11-19 06:20:02,778 INFO L226 Difference]: Without dead ends: 2542 [2024-11-19 06:20:02,779 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-19 06:20:02,780 INFO L432 NwaCegarLoop]: 2345 mSDtfsCounter, 28 mSDsluCounter, 16002 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 18347 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 06:20:02,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 18347 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 06:20:02,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2024-11-19 06:20:02,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 2539. [2024-11-19 06:20:02,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2539 states, 2020 states have (on average 1.4871287128712871) internal successors, (3004), 2522 states have internal predecessors, (3004), 514 states have call successors, (514), 4 states have call predecessors, (514), 3 states have return successors, (512), 13 states have call predecessors, (512), 512 states have call successors, (512) [2024-11-19 06:20:02,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2539 states to 2539 states and 4030 transitions. [2024-11-19 06:20:02,945 INFO L78 Accepts]: Start accepts. Automaton has 2539 states and 4030 transitions. Word has length 853 [2024-11-19 06:20:02,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:20:02,946 INFO L471 AbstractCegarLoop]: Abstraction has 2539 states and 4030 transitions. [2024-11-19 06:20:02,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.11111111111111) internal successors, (163), 9 states have internal predecessors, (163), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 06:20:02,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2539 states and 4030 transitions. [2024-11-19 06:20:02,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 855 [2024-11-19 06:20:02,955 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:20:02,956 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:20:02,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 06:20:02,956 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-19 06:20:02,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:20:02,957 INFO L85 PathProgramCache]: Analyzing trace with hash -396314206, now seen corresponding path program 1 times [2024-11-19 06:20:02,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:20:02,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326648007] [2024-11-19 06:20:02,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:20:02,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:20:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:20:04,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3426 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3426 trivial. 0 not checked. [2024-11-19 06:20:04,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:20:04,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326648007] [2024-11-19 06:20:04,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326648007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:20:04,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:20:04,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 06:20:04,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799626942] [2024-11-19 06:20:04,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:20:04,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 06:20:04,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:20:04,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 06:20:04,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:20:04,593 INFO L87 Difference]: Start difference. First operand 2539 states and 4030 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 06:20:04,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:20:04,818 INFO L93 Difference]: Finished difference Result 2542 states and 4033 transitions. [2024-11-19 06:20:04,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 06:20:04,819 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 854 [2024-11-19 06:20:04,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:20:04,823 INFO L225 Difference]: With dead ends: 2542 [2024-11-19 06:20:04,823 INFO L226 Difference]: Without dead ends: 2542 [2024-11-19 06:20:04,824 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:20:04,824 INFO L432 NwaCegarLoop]: 2348 mSDtfsCounter, 4 mSDsluCounter, 11345 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13693 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:20:04,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13693 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:20:04,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2024-11-19 06:20:04,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 2542. [2024-11-19 06:20:04,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2542 states, 2023 states have (on average 1.4864063272367771) internal successors, (3007), 2525 states have internal predecessors, (3007), 514 states have call successors, (514), 4 states have call predecessors, (514), 3 states have return successors, (512), 13 states have call predecessors, (512), 512 states have call successors, (512) [2024-11-19 06:20:04,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2542 states to 2542 states and 4033 transitions. [2024-11-19 06:20:04,919 INFO L78 Accepts]: Start accepts. Automaton has 2542 states and 4033 transitions. Word has length 854 [2024-11-19 06:20:04,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:20:04,920 INFO L471 AbstractCegarLoop]: Abstraction has 2542 states and 4033 transitions. [2024-11-19 06:20:04,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-19 06:20:04,920 INFO L276 IsEmpty]: Start isEmpty. Operand 2542 states and 4033 transitions. [2024-11-19 06:20:04,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 855 [2024-11-19 06:20:04,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:20:04,925 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:20:04,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 06:20:04,925 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2024-11-19 06:20:04,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:20:04,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1890956930, now seen corresponding path program 1 times [2024-11-19 06:20:04,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:20:04,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390975284] [2024-11-19 06:20:04,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:20:04,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:20:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:20:13,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3426 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 06:20:13,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:20:13,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390975284] [2024-11-19 06:20:13,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390975284] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:20:13,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147657638] [2024-11-19 06:20:13,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:20:13,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:20:13,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:20:13,391 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) [2024-11-19 06:20:13,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 06:20:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:20:14,446 INFO L255 TraceCheckSpWp]: Trace formula consists of 4165 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-19 06:20:14,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:20:14,466 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 [2024-11-19 06:20:14,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 06:20:14,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 06:20:14,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 06:20:14,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 06:20:14,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 06:20:14,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 06:20:15,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 06:20:15,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 06:20:15,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 06:20:15,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-19 06:20:15,346 INFO L134 CoverageAnalysis]: Checked inductivity of 3426 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 06:20:15,346 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:20:16,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3426 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 06:20:16,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147657638] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:20:16,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:20:16,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 15, 14] total 48 [2024-11-19 06:20:16,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293650860] [2024-11-19 06:20:16,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:20:16,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-19 06:20:16,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:20:16,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-19 06:20:16,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=755, Invalid=1501, Unknown=0, NotChecked=0, Total=2256 [2024-11-19 06:20:16,280 INFO L87 Difference]: Start difference. First operand 2542 states and 4033 transitions. Second operand has 48 states, 48 states have (on average 49.645833333333336) internal successors, (2383), 48 states have internal predecessors, (2383), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6)