./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/basename-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/basename-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-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-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 77d101c015aa227688f75df3fd905b74c24dd55f9fd8e8478582e7eae4d24583 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 16:51:10,718 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 16:51:10,799 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-20 16:51:10,806 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 16:51:10,806 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 16:51:10,836 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 16:51:10,837 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 16:51:10,837 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 16:51:10,838 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 16:51:10,840 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 16:51:10,840 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 16:51:10,840 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 16:51:10,841 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 16:51:10,841 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 16:51:10,844 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 16:51:10,844 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 16:51:10,845 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 16:51:10,845 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 16:51:10,845 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-20 16:51:10,845 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-20 16:51:10,845 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-20 16:51:10,846 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 16:51:10,847 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-20 16:51:10,847 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 16:51:10,847 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 16:51:10,847 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 16:51:10,848 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 16:51:10,848 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 16:51:10,848 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 16:51:10,849 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 16:51:10,849 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 16:51:10,850 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 16:51:10,850 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 16:51:10,850 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 16:51:10,851 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 16:51:10,851 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 16:51:10,851 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 16:51:10,851 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 16:51:10,852 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 16:51:10,852 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77d101c015aa227688f75df3fd905b74c24dd55f9fd8e8478582e7eae4d24583 [2024-11-20 16:51:11,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 16:51:11,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 16:51:11,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 16:51:11,139 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 16:51:11,140 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 16:51:11,142 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2024-11-20 16:51:12,669 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 16:51:12,988 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 16:51:12,989 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2024-11-20 16:51:13,018 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/275058a5c/ba7ab4ffd5a84443ac72c4092c984db0/FLAG2585ea7fa [2024-11-20 16:51:13,040 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/275058a5c/ba7ab4ffd5a84443ac72c4092c984db0 [2024-11-20 16:51:13,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 16:51:13,045 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 16:51:13,046 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 16:51:13,046 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 16:51:13,052 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 16:51:13,053 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:51:13" (1/1) ... [2024-11-20 16:51:13,054 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@556ab4ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:51:13, skipping insertion in model container [2024-11-20 16:51:13,054 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:51:13" (1/1) ... [2024-11-20 16:51:13,112 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 16:51:13,578 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-20 16:51:13,590 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-20 16:51:13,592 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-20 16:51:13,596 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-20 16:51:13,599 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-20 16:51:13,607 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-20 16:51:13,608 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-20 16:51:13,609 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-20 16:51:13,614 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-20 16:51:13,618 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-20 16:51:13,633 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-20 16:51:13,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 16:51:13,662 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 16:51:13,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 16:51:13,900 INFO L204 MainTranslator]: Completed translation [2024-11-20 16:51:13,900 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:51:13 WrapperNode [2024-11-20 16:51:13,901 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 16:51:13,901 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 16:51:13,901 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 16:51:13,902 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 16:51:13,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:51:13" (1/1) ... [2024-11-20 16:51:13,939 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:51:13" (1/1) ... [2024-11-20 16:51:13,998 INFO L138 Inliner]: procedures = 346, calls = 463, calls flagged for inlining = 11, calls inlined = 10, statements flattened = 746 [2024-11-20 16:51:13,999 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 16:51:13,999 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 16:51:13,999 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 16:51:14,000 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 16:51:14,014 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:51:13" (1/1) ... [2024-11-20 16:51:14,014 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:51:13" (1/1) ... [2024-11-20 16:51:14,026 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:51:13" (1/1) ... [2024-11-20 16:51:14,084 INFO L175 MemorySlicer]: Split 412 memory accesses to 14 slices as follows [2, 3, 3, 3, 4, 4, 4, 3, 3, 355, 12, 2, 12, 2]. 86 percent of accesses are in the largest equivalence class. The 379 initializations are split as follows [2, 3, 3, 3, 3, 3, 3, 3, 1, 355, 0, 0, 0, 0]. The 11 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 2, 1, 5, 2]. [2024-11-20 16:51:14,084 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:51:13" (1/1) ... [2024-11-20 16:51:14,085 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:51:13" (1/1) ... [2024-11-20 16:51:14,136 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:51:13" (1/1) ... [2024-11-20 16:51:14,145 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:51:13" (1/1) ... [2024-11-20 16:51:14,162 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:51:13" (1/1) ... [2024-11-20 16:51:14,174 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:51:13" (1/1) ... [2024-11-20 16:51:14,191 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 16:51:14,192 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 16:51:14,193 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 16:51:14,193 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 16:51:14,194 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:51:13" (1/1) ... [2024-11-20 16:51:14,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 16:51:14,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:51:14,232 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) [2024-11-20 16:51:14,235 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 [2024-11-20 16:51:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-20 16:51:14,284 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-20 16:51:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-20 16:51:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-20 16:51:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-20 16:51:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-20 16:51:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-20 16:51:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-20 16:51:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-20 16:51:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-20 16:51:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-20 16:51:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-20 16:51:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-20 16:51:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-11-20 16:51:14,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-11-20 16:51:14,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2024-11-20 16:51:14,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 16:51:14,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 16:51:14,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 16:51:14,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 16:51:14,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-20 16:51:14,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-20 16:51:14,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-20 16:51:14,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-20 16:51:14,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-20 16:51:14,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-20 16:51:14,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-20 16:51:14,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-20 16:51:14,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-20 16:51:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-20 16:51:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-20 16:51:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 16:51:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 16:51:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-20 16:51:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-20 16:51:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-20 16:51:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-20 16:51:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-20 16:51:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-20 16:51:14,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-20 16:51:14,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-20 16:51:14,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-20 16:51:14,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-20 16:51:14,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-20 16:51:14,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-20 16:51:14,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 16:51:14,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 16:51:14,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-20 16:51:14,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-20 16:51:14,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-20 16:51:14,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-20 16:51:14,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-20 16:51:14,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-20 16:51:14,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-20 16:51:14,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-20 16:51:14,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-20 16:51:14,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-20 16:51:14,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-11-20 16:51:14,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2024-11-20 16:51:14,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2024-11-20 16:51:14,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2024-11-20 16:51:14,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 16:51:14,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 16:51:14,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 16:51:14,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-20 16:51:14,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-20 16:51:14,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-20 16:51:14,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-20 16:51:14,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-20 16:51:14,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-20 16:51:14,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-20 16:51:14,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-20 16:51:14,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-20 16:51:14,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-20 16:51:14,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-20 16:51:14,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 16:51:14,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 16:51:14,648 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 16:51:14,650 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 16:51:15,454 INFO L? ?]: Removed 262 outVars from TransFormulas that were not future-live. [2024-11-20 16:51:15,455 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 16:51:15,485 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 16:51:15,487 INFO L316 CfgBuilder]: Removed 9 assume(true) statements. [2024-11-20 16:51:15,488 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:51:15 BoogieIcfgContainer [2024-11-20 16:51:15,488 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 16:51:15,490 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 16:51:15,491 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 16:51:15,495 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 16:51:15,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 04:51:13" (1/3) ... [2024-11-20 16:51:15,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb40624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:51:15, skipping insertion in model container [2024-11-20 16:51:15,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:51:13" (2/3) ... [2024-11-20 16:51:15,498 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb40624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:51:15, skipping insertion in model container [2024-11-20 16:51:15,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:51:15" (3/3) ... [2024-11-20 16:51:15,499 INFO L112 eAbstractionObserver]: Analyzing ICFG basename-2.i [2024-11-20 16:51:15,539 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 16:51:15,539 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 96 error locations. [2024-11-20 16:51:15,604 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 16:51:15,612 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;@3e8ec4af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 16:51:15,612 INFO L334 AbstractCegarLoop]: Starting to check reachability of 96 error locations. [2024-11-20 16:51:15,619 INFO L276 IsEmpty]: Start isEmpty. Operand has 250 states, 150 states have (on average 1.9266666666666667) internal successors, (289), 246 states have internal predecessors, (289), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:51:15,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-20 16:51:15,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:15,628 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-20 16:51:15,628 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:51:15,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:15,636 INFO L85 PathProgramCache]: Analyzing trace with hash 37801, now seen corresponding path program 1 times [2024-11-20 16:51:15,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:15,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012003353] [2024-11-20 16:51:15,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:15,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:16,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 16:51:16,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:16,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012003353] [2024-11-20 16:51:16,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012003353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:51:16,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:51:16,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 16:51:16,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002456647] [2024-11-20 16:51:16,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:51:16,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 16:51:16,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:16,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 16:51:16,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 16:51:16,253 INFO L87 Difference]: Start difference. First operand has 250 states, 150 states have (on average 1.9266666666666667) internal successors, (289), 246 states have internal predecessors, (289), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2024-11-20 16:51:16,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:16,511 INFO L93 Difference]: Finished difference Result 260 states and 292 transitions. [2024-11-20 16:51:16,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 16:51:16,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2024-11-20 16:51:16,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:16,524 INFO L225 Difference]: With dead ends: 260 [2024-11-20 16:51:16,525 INFO L226 Difference]: Without dead ends: 258 [2024-11-20 16:51:16,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 16:51:16,530 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 242 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:16,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 209 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 16:51:16,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-20 16:51:16,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 241. [2024-11-20 16:51:16,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 146 states have (on average 1.8356164383561644) internal successors, (268), 237 states have internal predecessors, (268), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:51:16,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 272 transitions. [2024-11-20 16:51:16,608 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 272 transitions. Word has length 3 [2024-11-20 16:51:16,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:16,608 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 272 transitions. [2024-11-20 16:51:16,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2024-11-20 16:51:16,609 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 272 transitions. [2024-11-20 16:51:16,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-20 16:51:16,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:16,609 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-20 16:51:16,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 16:51:16,610 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:51:16,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:16,611 INFO L85 PathProgramCache]: Analyzing trace with hash 37802, now seen corresponding path program 1 times [2024-11-20 16:51:16,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:16,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866001551] [2024-11-20 16:51:16,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:16,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:16,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 16:51:16,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:16,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866001551] [2024-11-20 16:51:16,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866001551] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:51:16,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:51:16,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 16:51:16,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184292624] [2024-11-20 16:51:16,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:51:16,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 16:51:16,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:16,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 16:51:16,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 16:51:16,931 INFO L87 Difference]: Start difference. First operand 241 states and 272 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2024-11-20 16:51:17,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:17,128 INFO L93 Difference]: Finished difference Result 240 states and 271 transitions. [2024-11-20 16:51:17,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 16:51:17,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2024-11-20 16:51:17,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:17,131 INFO L225 Difference]: With dead ends: 240 [2024-11-20 16:51:17,134 INFO L226 Difference]: Without dead ends: 240 [2024-11-20 16:51:17,134 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 16:51:17,135 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 11 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:17,136 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 436 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 16:51:17,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-20 16:51:17,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2024-11-20 16:51:17,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 146 states have (on average 1.8287671232876712) internal successors, (267), 236 states have internal predecessors, (267), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:51:17,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 271 transitions. [2024-11-20 16:51:17,158 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 271 transitions. Word has length 3 [2024-11-20 16:51:17,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:17,158 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 271 transitions. [2024-11-20 16:51:17,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2024-11-20 16:51:17,159 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 271 transitions. [2024-11-20 16:51:17,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-20 16:51:17,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:17,159 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-20 16:51:17,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 16:51:17,159 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:51:17,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:17,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1126113961, now seen corresponding path program 1 times [2024-11-20 16:51:17,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:17,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227921565] [2024-11-20 16:51:17,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:17,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:17,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 16:51:17,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:17,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227921565] [2024-11-20 16:51:17,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227921565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:51:17,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:51:17,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 16:51:17,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589478998] [2024-11-20 16:51:17,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:51:17,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 16:51:17,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:17,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 16:51:17,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-20 16:51:17,545 INFO L87 Difference]: Start difference. First operand 240 states and 271 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2024-11-20 16:51:17,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:17,719 INFO L93 Difference]: Finished difference Result 243 states and 274 transitions. [2024-11-20 16:51:17,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 16:51:17,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2024-11-20 16:51:17,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:17,722 INFO L225 Difference]: With dead ends: 243 [2024-11-20 16:51:17,723 INFO L226 Difference]: Without dead ends: 243 [2024-11-20 16:51:17,723 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-20 16:51:17,724 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 12 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:17,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 436 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 16:51:17,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-11-20 16:51:17,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 242. [2024-11-20 16:51:17,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 148 states have (on average 1.8175675675675675) internal successors, (269), 238 states have internal predecessors, (269), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:51:17,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 273 transitions. [2024-11-20 16:51:17,751 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 273 transitions. Word has length 6 [2024-11-20 16:51:17,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:17,751 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 273 transitions. [2024-11-20 16:51:17,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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) [2024-11-20 16:51:17,751 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 273 transitions. [2024-11-20 16:51:17,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-20 16:51:17,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:17,752 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:17,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 16:51:17,752 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:51:17,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:17,753 INFO L85 PathProgramCache]: Analyzing trace with hash 71430167, now seen corresponding path program 1 times [2024-11-20 16:51:17,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:17,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377288474] [2024-11-20 16:51:17,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:17,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:18,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 16:51:18,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:18,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377288474] [2024-11-20 16:51:18,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377288474] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:51:18,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278673926] [2024-11-20 16:51:18,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:18,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:18,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:51:18,179 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) [2024-11-20 16:51:18,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 16:51:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:18,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 16:51:18,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:51:18,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 16:51:18,593 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:51:18,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-20 16:51:18,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 16:51:18,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278673926] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 16:51:18,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 16:51:18,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-11-20 16:51:18,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657998610] [2024-11-20 16:51:18,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 16:51:18,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-20 16:51:18,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:18,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-20 16:51:18,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2024-11-20 16:51:18,716 INFO L87 Difference]: Start difference. First operand 242 states and 273 transitions. Second operand has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 states have internal predecessors, (25), 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) [2024-11-20 16:51:19,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:19,101 INFO L93 Difference]: Finished difference Result 246 states and 277 transitions. [2024-11-20 16:51:19,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 16:51:19,101 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 states have internal predecessors, (25), 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 [2024-11-20 16:51:19,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:19,103 INFO L225 Difference]: With dead ends: 246 [2024-11-20 16:51:19,103 INFO L226 Difference]: Without dead ends: 246 [2024-11-20 16:51:19,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2024-11-20 16:51:19,104 INFO L432 NwaCegarLoop]: 259 mSDtfsCounter, 516 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:19,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 955 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 16:51:19,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-20 16:51:19,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2024-11-20 16:51:19,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 153 states have (on average 1.7843137254901962) internal successors, (273), 242 states have internal predecessors, (273), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:51:19,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 277 transitions. [2024-11-20 16:51:19,120 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 277 transitions. Word has length 9 [2024-11-20 16:51:19,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:19,120 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 277 transitions. [2024-11-20 16:51:19,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 states have internal predecessors, (25), 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) [2024-11-20 16:51:19,121 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 277 transitions. [2024-11-20 16:51:19,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-20 16:51:19,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:19,122 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:19,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-20 16:51:19,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:19,323 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:51:19,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:19,324 INFO L85 PathProgramCache]: Analyzing trace with hash 994856290, now seen corresponding path program 1 times [2024-11-20 16:51:19,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:19,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211648637] [2024-11-20 16:51:19,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:19,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:19,519 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 16:51:19,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:19,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211648637] [2024-11-20 16:51:19,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211648637] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:51:19,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017438478] [2024-11-20 16:51:19,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:19,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:19,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:51:19,523 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) [2024-11-20 16:51:19,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 16:51:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:19,805 INFO L255 TraceCheckSpWp]: Trace formula consists of 925 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 16:51:19,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:51:19,838 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 16:51:19,839 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:51:19,896 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 16:51:19,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017438478] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 16:51:19,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 16:51:19,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-20 16:51:19,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277315739] [2024-11-20 16:51:19,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 16:51:19,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 16:51:19,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:19,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 16:51:19,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-20 16:51:19,899 INFO L87 Difference]: Start difference. First operand 246 states and 277 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 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) [2024-11-20 16:51:19,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:19,952 INFO L93 Difference]: Finished difference Result 261 states and 292 transitions. [2024-11-20 16:51:19,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 16:51:19,953 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 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 16 [2024-11-20 16:51:19,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:19,955 INFO L225 Difference]: With dead ends: 261 [2024-11-20 16:51:19,955 INFO L226 Difference]: Without dead ends: 261 [2024-11-20 16:51:19,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-20 16:51:19,957 INFO L432 NwaCegarLoop]: 267 mSDtfsCounter, 4 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:19,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 793 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 16:51:19,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-11-20 16:51:19,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2024-11-20 16:51:19,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 168 states have (on average 1.7142857142857142) internal successors, (288), 257 states have internal predecessors, (288), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:51:19,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 292 transitions. [2024-11-20 16:51:19,964 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 292 transitions. Word has length 16 [2024-11-20 16:51:19,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:19,965 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 292 transitions. [2024-11-20 16:51:19,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 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) [2024-11-20 16:51:19,965 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 292 transitions. [2024-11-20 16:51:19,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-20 16:51:19,966 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:19,966 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:19,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 16:51:20,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:20,167 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:51:20,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:20,168 INFO L85 PathProgramCache]: Analyzing trace with hash -23468336, now seen corresponding path program 2 times [2024-11-20 16:51:20,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:20,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153347947] [2024-11-20 16:51:20,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:20,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:20,557 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 16:51:20,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:20,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153347947] [2024-11-20 16:51:20,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153347947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:51:20,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837857290] [2024-11-20 16:51:20,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 16:51:20,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:20,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:51:20,561 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) [2024-11-20 16:51:20,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 16:51:20,829 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-20 16:51:20,829 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 16:51:20,835 INFO L255 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-20 16:51:20,837 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:51:20,886 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-20 16:51:20,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-20 16:51:20,991 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-20 16:51:20,991 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 16:51:20,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837857290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:51:20,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 16:51:20,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [11] total 12 [2024-11-20 16:51:20,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230025717] [2024-11-20 16:51:20,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:51:20,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 16:51:20,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:20,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 16:51:20,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-20 16:51:20,992 INFO L87 Difference]: Start difference. First operand 261 states and 292 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2024-11-20 16:51:21,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:21,091 INFO L93 Difference]: Finished difference Result 277 states and 309 transitions. [2024-11-20 16:51:21,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 16:51:21,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 31 [2024-11-20 16:51:21,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:21,093 INFO L225 Difference]: With dead ends: 277 [2024-11-20 16:51:21,093 INFO L226 Difference]: Without dead ends: 277 [2024-11-20 16:51:21,094 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-20 16:51:21,094 INFO L432 NwaCegarLoop]: 183 mSDtfsCounter, 241 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:21,095 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 204 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 16:51:21,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-11-20 16:51:21,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 260. [2024-11-20 16:51:21,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 168 states have (on average 1.7083333333333333) internal successors, (287), 256 states have internal predecessors, (287), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:51:21,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 291 transitions. [2024-11-20 16:51:21,100 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 291 transitions. Word has length 31 [2024-11-20 16:51:21,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:21,101 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 291 transitions. [2024-11-20 16:51:21,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2024-11-20 16:51:21,101 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 291 transitions. [2024-11-20 16:51:21,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-20 16:51:21,102 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:21,102 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:21,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-20 16:51:21,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:21,303 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:51:21,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:21,303 INFO L85 PathProgramCache]: Analyzing trace with hash -23468335, now seen corresponding path program 1 times [2024-11-20 16:51:21,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:21,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478535927] [2024-11-20 16:51:21,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:21,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:21,700 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 16:51:21,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:21,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478535927] [2024-11-20 16:51:21,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478535927] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:51:21,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031497176] [2024-11-20 16:51:21,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:21,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:21,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:51:21,704 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:51:21,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 16:51:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:21,980 INFO L255 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 16:51:21,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:51:22,044 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 16:51:22,045 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:51:22,146 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 16:51:22,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031497176] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 16:51:22,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 16:51:22,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2024-11-20 16:51:22,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623352916] [2024-11-20 16:51:22,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 16:51:22,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 16:51:22,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:22,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 16:51:22,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-20 16:51:22,148 INFO L87 Difference]: Start difference. First operand 260 states and 291 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 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) [2024-11-20 16:51:22,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:22,215 INFO L93 Difference]: Finished difference Result 266 states and 297 transitions. [2024-11-20 16:51:22,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 16:51:22,216 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 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 31 [2024-11-20 16:51:22,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:22,217 INFO L225 Difference]: With dead ends: 266 [2024-11-20 16:51:22,217 INFO L226 Difference]: Without dead ends: 266 [2024-11-20 16:51:22,217 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-20 16:51:22,218 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 2 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:22,218 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1052 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 16:51:22,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-20 16:51:22,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2024-11-20 16:51:22,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 174 states have (on average 1.6839080459770115) internal successors, (293), 262 states have internal predecessors, (293), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:51:22,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 297 transitions. [2024-11-20 16:51:22,228 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 297 transitions. Word has length 31 [2024-11-20 16:51:22,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:22,228 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 297 transitions. [2024-11-20 16:51:22,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 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) [2024-11-20 16:51:22,229 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 297 transitions. [2024-11-20 16:51:22,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-20 16:51:22,230 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:22,230 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:22,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 16:51:22,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:22,431 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:51:22,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:22,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1894060655, now seen corresponding path program 2 times [2024-11-20 16:51:22,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:22,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964895958] [2024-11-20 16:51:22,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:22,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:22,971 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:22,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:22,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964895958] [2024-11-20 16:51:22,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964895958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:51:22,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:51:22,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 16:51:22,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664520451] [2024-11-20 16:51:22,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:51:22,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 16:51:22,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:22,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 16:51:22,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 16:51:22,973 INFO L87 Difference]: Start difference. First operand 266 states and 297 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2024-11-20 16:51:23,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:23,191 INFO L93 Difference]: Finished difference Result 282 states and 314 transitions. [2024-11-20 16:51:23,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 16:51:23,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 37 [2024-11-20 16:51:23,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:23,192 INFO L225 Difference]: With dead ends: 282 [2024-11-20 16:51:23,193 INFO L226 Difference]: Without dead ends: 282 [2024-11-20 16:51:23,193 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-20 16:51:23,193 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 516 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:23,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 154 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 16:51:23,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-20 16:51:23,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 265. [2024-11-20 16:51:23,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 174 states have (on average 1.6781609195402298) internal successors, (292), 261 states have internal predecessors, (292), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:51:23,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 296 transitions. [2024-11-20 16:51:23,200 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 296 transitions. Word has length 37 [2024-11-20 16:51:23,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:23,202 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 296 transitions. [2024-11-20 16:51:23,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2024-11-20 16:51:23,202 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 296 transitions. [2024-11-20 16:51:23,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-20 16:51:23,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:23,204 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:23,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 16:51:23,204 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:51:23,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:23,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1983337925, now seen corresponding path program 1 times [2024-11-20 16:51:23,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:23,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995636332] [2024-11-20 16:51:23,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:23,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:23,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:51:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:23,602 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:23,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:23,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995636332] [2024-11-20 16:51:23,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995636332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:51:23,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:51:23,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 16:51:23,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95413923] [2024-11-20 16:51:23,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:51:23,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 16:51:23,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:23,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 16:51:23,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 16:51:23,606 INFO L87 Difference]: Start difference. First operand 265 states and 296 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:23,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:23,737 INFO L93 Difference]: Finished difference Result 277 states and 309 transitions. [2024-11-20 16:51:23,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 16:51:23,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2024-11-20 16:51:23,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:23,739 INFO L225 Difference]: With dead ends: 277 [2024-11-20 16:51:23,739 INFO L226 Difference]: Without dead ends: 277 [2024-11-20 16:51:23,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 16:51:23,739 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 221 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:23,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 212 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 16:51:23,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-11-20 16:51:23,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 260. [2024-11-20 16:51:23,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 174 states have (on average 1.6494252873563218) internal successors, (287), 256 states have internal predecessors, (287), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:51:23,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 291 transitions. [2024-11-20 16:51:23,747 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 291 transitions. Word has length 45 [2024-11-20 16:51:23,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:23,748 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 291 transitions. [2024-11-20 16:51:23,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:23,749 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 291 transitions. [2024-11-20 16:51:23,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-20 16:51:23,752 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:23,752 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:23,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 16:51:23,752 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:51:23,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:23,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1983337924, now seen corresponding path program 1 times [2024-11-20 16:51:23,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:23,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492428357] [2024-11-20 16:51:23,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:23,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:23,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:24,468 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:51:24,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:24,508 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:24,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:24,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492428357] [2024-11-20 16:51:24,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492428357] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:51:24,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:51:24,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 16:51:24,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506936618] [2024-11-20 16:51:24,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:51:24,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 16:51:24,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:24,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 16:51:24,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 16:51:24,510 INFO L87 Difference]: Start difference. First operand 260 states and 291 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:24,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:24,824 INFO L93 Difference]: Finished difference Result 423 states and 484 transitions. [2024-11-20 16:51:24,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 16:51:24,825 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2024-11-20 16:51:24,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:24,827 INFO L225 Difference]: With dead ends: 423 [2024-11-20 16:51:24,827 INFO L226 Difference]: Without dead ends: 423 [2024-11-20 16:51:24,828 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 16:51:24,828 INFO L432 NwaCegarLoop]: 212 mSDtfsCounter, 413 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:24,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 827 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 16:51:24,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2024-11-20 16:51:24,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 259. [2024-11-20 16:51:24,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 174 states have (on average 1.6436781609195403) internal successors, (286), 255 states have internal predecessors, (286), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:51:24,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 290 transitions. [2024-11-20 16:51:24,835 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 290 transitions. Word has length 45 [2024-11-20 16:51:24,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:24,835 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 290 transitions. [2024-11-20 16:51:24,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:24,835 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 290 transitions. [2024-11-20 16:51:24,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-20 16:51:24,836 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:24,836 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:24,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 16:51:24,837 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:51:24,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:24,837 INFO L85 PathProgramCache]: Analyzing trace with hash 244978578, now seen corresponding path program 1 times [2024-11-20 16:51:24,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:24,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960291567] [2024-11-20 16:51:24,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:24,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:25,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:51:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:25,272 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:25,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:25,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960291567] [2024-11-20 16:51:25,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960291567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:51:25,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:51:25,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 16:51:25,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804276894] [2024-11-20 16:51:25,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:51:25,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 16:51:25,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:25,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 16:51:25,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-20 16:51:25,274 INFO L87 Difference]: Start difference. First operand 259 states and 290 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:25,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:25,556 INFO L93 Difference]: Finished difference Result 296 states and 331 transitions. [2024-11-20 16:51:25,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 16:51:25,557 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2024-11-20 16:51:25,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:25,559 INFO L225 Difference]: With dead ends: 296 [2024-11-20 16:51:25,559 INFO L226 Difference]: Without dead ends: 296 [2024-11-20 16:51:25,559 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 [2024-11-20 16:51:25,559 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 303 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:25,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 319 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 16:51:25,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-11-20 16:51:25,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 272. [2024-11-20 16:51:25,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 188 states have (on average 1.6329787234042554) internal successors, (307), 268 states have internal predecessors, (307), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:51:25,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 311 transitions. [2024-11-20 16:51:25,566 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 311 transitions. Word has length 48 [2024-11-20 16:51:25,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:25,568 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 311 transitions. [2024-11-20 16:51:25,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:25,568 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 311 transitions. [2024-11-20 16:51:25,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-20 16:51:25,568 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:25,569 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:25,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 16:51:25,569 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:51:25,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:25,570 INFO L85 PathProgramCache]: Analyzing trace with hash -995599198, now seen corresponding path program 1 times [2024-11-20 16:51:25,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:25,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342077691] [2024-11-20 16:51:25,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:25,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:25,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:51:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:25,769 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:25,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:25,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342077691] [2024-11-20 16:51:25,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342077691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:51:25,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:51:25,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 16:51:25,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573758526] [2024-11-20 16:51:25,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:51:25,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 16:51:25,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:25,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 16:51:25,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 16:51:25,772 INFO L87 Difference]: Start difference. First operand 272 states and 311 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:25,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:25,947 INFO L93 Difference]: Finished difference Result 306 states and 352 transitions. [2024-11-20 16:51:25,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 16:51:25,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2024-11-20 16:51:25,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:25,949 INFO L225 Difference]: With dead ends: 306 [2024-11-20 16:51:25,949 INFO L226 Difference]: Without dead ends: 306 [2024-11-20 16:51:25,950 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 [2024-11-20 16:51:25,950 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 375 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:25,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 289 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 16:51:25,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-11-20 16:51:25,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 265. [2024-11-20 16:51:25,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 188 states have (on average 1.5957446808510638) internal successors, (300), 261 states have internal predecessors, (300), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:51:25,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 304 transitions. [2024-11-20 16:51:25,956 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 304 transitions. Word has length 49 [2024-11-20 16:51:25,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:25,956 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 304 transitions. [2024-11-20 16:51:25,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:25,957 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 304 transitions. [2024-11-20 16:51:25,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-20 16:51:25,957 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:25,957 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:25,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-20 16:51:25,958 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:51:25,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:25,958 INFO L85 PathProgramCache]: Analyzing trace with hash -995599197, now seen corresponding path program 1 times [2024-11-20 16:51:25,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:25,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6847342] [2024-11-20 16:51:25,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:25,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:26,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:51:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:26,289 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:26,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:26,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6847342] [2024-11-20 16:51:26,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6847342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:51:26,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:51:26,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 16:51:26,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891737912] [2024-11-20 16:51:26,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:51:26,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 16:51:26,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:26,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 16:51:26,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 16:51:26,292 INFO L87 Difference]: Start difference. First operand 265 states and 304 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:26,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:26,367 INFO L93 Difference]: Finished difference Result 272 states and 305 transitions. [2024-11-20 16:51:26,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 16:51:26,368 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2024-11-20 16:51:26,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:26,369 INFO L225 Difference]: With dead ends: 272 [2024-11-20 16:51:26,369 INFO L226 Difference]: Without dead ends: 272 [2024-11-20 16:51:26,369 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 16:51:26,370 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 236 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:26,370 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 966 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 16:51:26,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-11-20 16:51:26,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 265. [2024-11-20 16:51:26,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 188 states have (on average 1.5904255319148937) internal successors, (299), 261 states have internal predecessors, (299), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:51:26,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 303 transitions. [2024-11-20 16:51:26,378 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 303 transitions. Word has length 49 [2024-11-20 16:51:26,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:26,378 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 303 transitions. [2024-11-20 16:51:26,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:26,379 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 303 transitions. [2024-11-20 16:51:26,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-20 16:51:26,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:26,380 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:26,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-20 16:51:26,380 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:51:26,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:26,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1007374377, now seen corresponding path program 1 times [2024-11-20 16:51:26,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:26,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121292743] [2024-11-20 16:51:26,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:26,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:26,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:51:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:26,654 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:26,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:26,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121292743] [2024-11-20 16:51:26,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121292743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:51:26,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:51:26,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 16:51:26,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838590027] [2024-11-20 16:51:26,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:51:26,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 16:51:26,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:26,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 16:51:26,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 16:51:26,656 INFO L87 Difference]: Start difference. First operand 265 states and 303 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:26,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:26,774 INFO L93 Difference]: Finished difference Result 271 states and 311 transitions. [2024-11-20 16:51:26,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 16:51:26,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2024-11-20 16:51:26,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:26,776 INFO L225 Difference]: With dead ends: 271 [2024-11-20 16:51:26,776 INFO L226 Difference]: Without dead ends: 271 [2024-11-20 16:51:26,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 16:51:26,777 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 207 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:26,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 208 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 16:51:26,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-20 16:51:26,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 270. [2024-11-20 16:51:26,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 194 states have (on average 1.5824742268041236) internal successors, (307), 266 states have internal predecessors, (307), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:51:26,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 311 transitions. [2024-11-20 16:51:26,783 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 311 transitions. Word has length 51 [2024-11-20 16:51:26,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:26,783 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 311 transitions. [2024-11-20 16:51:26,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:26,784 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 311 transitions. [2024-11-20 16:51:26,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-20 16:51:26,784 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:26,784 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:26,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-20 16:51:26,785 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:51:26,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:26,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1007374378, now seen corresponding path program 1 times [2024-11-20 16:51:26,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:26,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694932627] [2024-11-20 16:51:26,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:26,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:26,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:27,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:51:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:27,651 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:27,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:27,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694932627] [2024-11-20 16:51:27,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694932627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:51:27,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:51:27,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 16:51:27,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349029860] [2024-11-20 16:51:27,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:51:27,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 16:51:27,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:27,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 16:51:27,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-20 16:51:27,657 INFO L87 Difference]: Start difference. First operand 270 states and 311 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:28,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:28,058 INFO L93 Difference]: Finished difference Result 276 states and 312 transitions. [2024-11-20 16:51:28,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 16:51:28,059 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2024-11-20 16:51:28,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:28,060 INFO L225 Difference]: With dead ends: 276 [2024-11-20 16:51:28,060 INFO L226 Difference]: Without dead ends: 276 [2024-11-20 16:51:28,060 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-20 16:51:28,061 INFO L432 NwaCegarLoop]: 241 mSDtfsCounter, 33 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:28,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 638 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 16:51:28,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-20 16:51:28,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 270. [2024-11-20 16:51:28,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 194 states have (on average 1.577319587628866) internal successors, (306), 266 states have internal predecessors, (306), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:51:28,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 310 transitions. [2024-11-20 16:51:28,069 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 310 transitions. Word has length 51 [2024-11-20 16:51:28,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:28,069 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 310 transitions. [2024-11-20 16:51:28,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:28,069 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 310 transitions. [2024-11-20 16:51:28,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-20 16:51:28,071 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:28,071 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:28,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-20 16:51:28,072 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:51:28,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:28,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1753597880, now seen corresponding path program 1 times [2024-11-20 16:51:28,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:28,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189498523] [2024-11-20 16:51:28,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:28,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:28,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:51:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:28,484 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:28,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:28,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189498523] [2024-11-20 16:51:28,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189498523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:51:28,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:51:28,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 16:51:28,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174475101] [2024-11-20 16:51:28,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:51:28,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 16:51:28,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:28,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 16:51:28,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 16:51:28,486 INFO L87 Difference]: Start difference. First operand 270 states and 310 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:28,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:28,703 INFO L93 Difference]: Finished difference Result 269 states and 308 transitions. [2024-11-20 16:51:28,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 16:51:28,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2024-11-20 16:51:28,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:28,705 INFO L225 Difference]: With dead ends: 269 [2024-11-20 16:51:28,705 INFO L226 Difference]: Without dead ends: 269 [2024-11-20 16:51:28,706 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 16:51:28,706 INFO L432 NwaCegarLoop]: 238 mSDtfsCounter, 14 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:28,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 726 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 16:51:28,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-11-20 16:51:28,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2024-11-20 16:51:28,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 194 states have (on average 1.5670103092783505) internal successors, (304), 265 states have internal predecessors, (304), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:51:28,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 308 transitions. [2024-11-20 16:51:28,714 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 308 transitions. Word has length 54 [2024-11-20 16:51:28,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:28,715 INFO L471 AbstractCegarLoop]: Abstraction has 269 states and 308 transitions. [2024-11-20 16:51:28,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:28,715 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 308 transitions. [2024-11-20 16:51:28,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-20 16:51:28,716 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:28,716 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:28,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-20 16:51:28,716 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:51:28,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:28,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1753597881, now seen corresponding path program 1 times [2024-11-20 16:51:28,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:28,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431253814] [2024-11-20 16:51:28,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:28,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:29,273 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:51:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:29,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:29,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431253814] [2024-11-20 16:51:29,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431253814] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:51:29,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:51:29,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 16:51:29,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600165668] [2024-11-20 16:51:29,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:51:29,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 16:51:29,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:29,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 16:51:29,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 16:51:29,285 INFO L87 Difference]: Start difference. First operand 269 states and 308 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:29,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:29,512 INFO L93 Difference]: Finished difference Result 268 states and 306 transitions. [2024-11-20 16:51:29,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 16:51:29,512 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2024-11-20 16:51:29,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:29,513 INFO L225 Difference]: With dead ends: 268 [2024-11-20 16:51:29,513 INFO L226 Difference]: Without dead ends: 268 [2024-11-20 16:51:29,513 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 16:51:29,514 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 13 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:29,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 728 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 16:51:29,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-20 16:51:29,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2024-11-20 16:51:29,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 194 states have (on average 1.556701030927835) internal successors, (302), 264 states have internal predecessors, (302), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:51:29,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 306 transitions. [2024-11-20 16:51:29,519 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 306 transitions. Word has length 54 [2024-11-20 16:51:29,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:29,519 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 306 transitions. [2024-11-20 16:51:29,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:29,519 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 306 transitions. [2024-11-20 16:51:29,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-20 16:51:29,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:29,520 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:29,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-20 16:51:29,520 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:51:29,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:29,521 INFO L85 PathProgramCache]: Analyzing trace with hash -216475537, now seen corresponding path program 1 times [2024-11-20 16:51:29,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:29,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924268742] [2024-11-20 16:51:29,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:29,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:29,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:51:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:29,733 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:29,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:29,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924268742] [2024-11-20 16:51:29,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924268742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:51:29,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:51:29,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 16:51:29,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637342499] [2024-11-20 16:51:29,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:51:29,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 16:51:29,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:29,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 16:51:29,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 16:51:29,736 INFO L87 Difference]: Start difference. First operand 268 states and 306 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:29,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:29,929 INFO L93 Difference]: Finished difference Result 267 states and 304 transitions. [2024-11-20 16:51:29,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 16:51:29,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2024-11-20 16:51:29,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:29,930 INFO L225 Difference]: With dead ends: 267 [2024-11-20 16:51:29,931 INFO L226 Difference]: Without dead ends: 267 [2024-11-20 16:51:29,931 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 16:51:29,932 INFO L432 NwaCegarLoop]: 244 mSDtfsCounter, 7 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:29,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 785 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 16:51:29,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-11-20 16:51:29,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2024-11-20 16:51:29,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 194 states have (on average 1.5463917525773196) internal successors, (300), 263 states have internal predecessors, (300), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:51:29,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 304 transitions. [2024-11-20 16:51:29,937 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 304 transitions. Word has length 59 [2024-11-20 16:51:29,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:29,937 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 304 transitions. [2024-11-20 16:51:29,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:29,937 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 304 transitions. [2024-11-20 16:51:29,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-20 16:51:29,939 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:29,939 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:29,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-20 16:51:29,940 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:51:29,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:29,940 INFO L85 PathProgramCache]: Analyzing trace with hash -216475536, now seen corresponding path program 1 times [2024-11-20 16:51:29,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:29,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609296911] [2024-11-20 16:51:29,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:29,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:29,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:30,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:51:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:30,683 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:30,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:30,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609296911] [2024-11-20 16:51:30,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609296911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:51:30,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:51:30,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 16:51:30,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459482033] [2024-11-20 16:51:30,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:51:30,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 16:51:30,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:30,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 16:51:30,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-20 16:51:30,689 INFO L87 Difference]: Start difference. First operand 267 states and 304 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:30,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:30,964 INFO L93 Difference]: Finished difference Result 277 states and 315 transitions. [2024-11-20 16:51:30,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 16:51:30,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2024-11-20 16:51:30,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:30,965 INFO L225 Difference]: With dead ends: 277 [2024-11-20 16:51:30,966 INFO L226 Difference]: Without dead ends: 277 [2024-11-20 16:51:30,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-20 16:51:30,966 INFO L432 NwaCegarLoop]: 234 mSDtfsCounter, 16 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:30,966 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 725 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 16:51:30,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-11-20 16:51:30,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 275. [2024-11-20 16:51:30,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 202 states have (on average 1.5297029702970297) internal successors, (309), 271 states have internal predecessors, (309), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:51:30,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 313 transitions. [2024-11-20 16:51:30,971 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 313 transitions. Word has length 59 [2024-11-20 16:51:30,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:30,972 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 313 transitions. [2024-11-20 16:51:30,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:30,972 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 313 transitions. [2024-11-20 16:51:30,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-20 16:51:30,972 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:30,973 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:30,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-20 16:51:30,973 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:51:30,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:30,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1826213462, now seen corresponding path program 1 times [2024-11-20 16:51:30,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:30,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881511986] [2024-11-20 16:51:30,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:30,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:31,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:31,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:51:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:31,641 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:31,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:31,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881511986] [2024-11-20 16:51:31,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881511986] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:51:31,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409874987] [2024-11-20 16:51:31,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:31,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:31,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:51:31,644 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:51:31,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 16:51:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:32,009 INFO L255 TraceCheckSpWp]: Trace formula consists of 1262 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-20 16:51:32,029 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:51:32,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-20 16:51:32,071 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 23 treesize of output 1 [2024-11-20 16:51:32,078 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 23 treesize of output 1 [2024-11-20 16:51:32,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2024-11-20 16:51:32,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 12 [2024-11-20 16:51:32,321 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:32,323 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:51:32,599 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:32,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409874987] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 16:51:32,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 16:51:32,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 20 [2024-11-20 16:51:32,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064500302] [2024-11-20 16:51:32,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 16:51:32,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-20 16:51:32,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:32,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-20 16:51:32,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2024-11-20 16:51:32,601 INFO L87 Difference]: Start difference. First operand 275 states and 313 transitions. Second operand has 21 states, 20 states have (on average 3.55) internal successors, (71), 21 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:33,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:33,459 INFO L93 Difference]: Finished difference Result 288 states and 326 transitions. [2024-11-20 16:51:33,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 16:51:33,459 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.55) internal successors, (71), 21 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2024-11-20 16:51:33,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:33,460 INFO L225 Difference]: With dead ends: 288 [2024-11-20 16:51:33,460 INFO L226 Difference]: Without dead ends: 288 [2024-11-20 16:51:33,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2024-11-20 16:51:33,461 INFO L432 NwaCegarLoop]: 234 mSDtfsCounter, 37 mSDsluCounter, 1906 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 2140 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:33,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 2140 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-20 16:51:33,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-20 16:51:33,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2024-11-20 16:51:33,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 216 states have (on average 1.4907407407407407) internal successors, (322), 284 states have internal predecessors, (322), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:51:33,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 326 transitions. [2024-11-20 16:51:33,468 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 326 transitions. Word has length 64 [2024-11-20 16:51:33,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:33,468 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 326 transitions. [2024-11-20 16:51:33,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.55) internal successors, (71), 21 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:33,468 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 326 transitions. [2024-11-20 16:51:33,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-20 16:51:33,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:33,469 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 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] [2024-11-20 16:51:33,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-20 16:51:33,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:33,673 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:51:33,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:33,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1054215480, now seen corresponding path program 1 times [2024-11-20 16:51:33,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:33,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82964903] [2024-11-20 16:51:33,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:33,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:33,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:51:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:33,921 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:33,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:33,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82964903] [2024-11-20 16:51:33,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82964903] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:51:33,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591892078] [2024-11-20 16:51:33,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:33,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:33,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:51:33,924 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:51:33,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 16:51:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:34,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 1326 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-20 16:51:34,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:51:34,350 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:34,351 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:51:34,399 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:34,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591892078] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 16:51:34,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 16:51:34,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-20 16:51:34,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340742823] [2024-11-20 16:51:34,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 16:51:34,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 16:51:34,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:34,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 16:51:34,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-20 16:51:34,402 INFO L87 Difference]: Start difference. First operand 288 states and 326 transitions. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:34,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:34,456 INFO L93 Difference]: Finished difference Result 345 states and 381 transitions. [2024-11-20 16:51:34,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-20 16:51:34,457 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2024-11-20 16:51:34,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:34,459 INFO L225 Difference]: With dead ends: 345 [2024-11-20 16:51:34,459 INFO L226 Difference]: Without dead ends: 345 [2024-11-20 16:51:34,459 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-20 16:51:34,459 INFO L432 NwaCegarLoop]: 246 mSDtfsCounter, 20 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1465 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:34,460 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1465 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 16:51:34,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2024-11-20 16:51:34,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 338. [2024-11-20 16:51:34,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 266 states have (on average 1.4172932330827068) internal successors, (377), 334 states have internal predecessors, (377), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:51:34,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 381 transitions. [2024-11-20 16:51:34,466 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 381 transitions. Word has length 75 [2024-11-20 16:51:34,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:34,467 INFO L471 AbstractCegarLoop]: Abstraction has 338 states and 381 transitions. [2024-11-20 16:51:34,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:34,467 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 381 transitions. [2024-11-20 16:51:34,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-20 16:51:34,468 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:34,468 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 8, 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] [2024-11-20 16:51:34,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-20 16:51:34,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:34,669 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:51:34,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:34,670 INFO L85 PathProgramCache]: Analyzing trace with hash -592392318, now seen corresponding path program 2 times [2024-11-20 16:51:34,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:34,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741274688] [2024-11-20 16:51:34,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:34,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:35,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:51:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:35,142 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 2 proven. 148 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:35,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:35,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741274688] [2024-11-20 16:51:35,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741274688] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:51:35,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439232177] [2024-11-20 16:51:35,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 16:51:35,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:35,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:51:35,145 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:51:35,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 16:51:35,563 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 16:51:35,563 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 16:51:35,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 1471 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-20 16:51:35,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:51:35,635 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 2 proven. 148 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:35,636 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:51:35,756 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 2 proven. 148 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-20 16:51:35,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439232177] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 16:51:35,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 16:51:35,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2024-11-20 16:51:35,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363787600] [2024-11-20 16:51:35,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 16:51:35,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 16:51:35,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:35,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 16:51:35,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-20 16:51:35,761 INFO L87 Difference]: Start difference. First operand 338 states and 381 transitions. Second operand has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:35,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:35,812 INFO L93 Difference]: Finished difference Result 367 states and 403 transitions. [2024-11-20 16:51:35,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 16:51:35,812 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2024-11-20 16:51:35,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:35,814 INFO L225 Difference]: With dead ends: 367 [2024-11-20 16:51:35,814 INFO L226 Difference]: Without dead ends: 367 [2024-11-20 16:51:35,814 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 192 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-20 16:51:35,817 INFO L432 NwaCegarLoop]: 246 mSDtfsCounter, 32 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:35,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 754 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 16:51:35,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2024-11-20 16:51:35,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 358. [2024-11-20 16:51:35,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 286 states have (on average 1.3951048951048952) internal successors, (399), 354 states have internal predecessors, (399), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:51:35,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 403 transitions. [2024-11-20 16:51:35,849 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 403 transitions. Word has length 100 [2024-11-20 16:51:35,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:35,850 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 403 transitions. [2024-11-20 16:51:35,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:35,850 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 403 transitions. [2024-11-20 16:51:35,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-20 16:51:35,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:35,851 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 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] [2024-11-20 16:51:35,864 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-20 16:51:36,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:36,053 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:51:36,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:36,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1911546690, now seen corresponding path program 3 times [2024-11-20 16:51:36,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:36,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012577146] [2024-11-20 16:51:36,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:36,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:36,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:51:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:36,864 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:51:36,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:36,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012577146] [2024-11-20 16:51:36,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012577146] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:51:36,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201170295] [2024-11-20 16:51:36,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 16:51:36,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:36,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:51:36,867 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:51:36,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 16:51:37,279 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-20 16:51:37,279 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 16:51:37,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-20 16:51:37,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:51:37,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 16:51:37,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2024-11-20 16:51:37,366 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-20 16:51:37,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-20 16:51:37,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 16:51:37,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2024-11-20 16:51:37,851 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-20 16:51:37,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-20 16:51:37,866 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:51:37,866 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:51:39,299 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 16:51:39,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 72 [2024-11-20 16:51:39,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2024-11-20 16:51:39,516 INFO L349 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2024-11-20 16:51:39,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 59 [2024-11-20 16:51:39,558 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:51:39,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201170295] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 16:51:39,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 16:51:39,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2024-11-20 16:51:39,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964184071] [2024-11-20 16:51:39,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 16:51:39,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-20 16:51:39,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:39,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-20 16:51:39,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2024-11-20 16:51:39,560 INFO L87 Difference]: Start difference. First operand 358 states and 403 transitions. Second operand has 21 states, 20 states have (on average 4.0) internal successors, (80), 21 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:40,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:40,283 INFO L93 Difference]: Finished difference Result 363 states and 398 transitions. [2024-11-20 16:51:40,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 16:51:40,283 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.0) internal successors, (80), 21 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 110 [2024-11-20 16:51:40,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:40,285 INFO L225 Difference]: With dead ends: 363 [2024-11-20 16:51:40,285 INFO L226 Difference]: Without dead ends: 363 [2024-11-20 16:51:40,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 208 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=157, Invalid=395, Unknown=0, NotChecked=0, Total=552 [2024-11-20 16:51:40,285 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 480 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:40,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 1272 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-20 16:51:40,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-11-20 16:51:40,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 299. [2024-11-20 16:51:40,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 231 states have (on average 1.4285714285714286) internal successors, (330), 295 states have internal predecessors, (330), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:51:40,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 334 transitions. [2024-11-20 16:51:40,292 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 334 transitions. Word has length 110 [2024-11-20 16:51:40,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:40,293 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 334 transitions. [2024-11-20 16:51:40,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.0) internal successors, (80), 21 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:40,293 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 334 transitions. [2024-11-20 16:51:40,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-20 16:51:40,294 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:40,294 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:40,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-20 16:51:40,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-20 16:51:40,495 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:51:40,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:40,496 INFO L85 PathProgramCache]: Analyzing trace with hash -871595277, now seen corresponding path program 1 times [2024-11-20 16:51:40,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:40,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373525007] [2024-11-20 16:51:40,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:40,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:40,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:41,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:51:41,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:41,244 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:51:41,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:41,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373525007] [2024-11-20 16:51:41,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373525007] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:51:41,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755418521] [2024-11-20 16:51:41,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:41,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:41,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:51:41,248 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:51:41,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 16:51:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:41,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 1529 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-20 16:51:41,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:51:41,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 16:51:41,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-20 16:51:41,712 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-20 16:51:41,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-20 16:51:41,938 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:51:41,938 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:51:42,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2024-11-20 16:51:42,300 INFO L349 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2024-11-20 16:51:42,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 49 [2024-11-20 16:51:42,337 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:51:42,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755418521] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 16:51:42,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 16:51:42,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2024-11-20 16:51:42,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75398484] [2024-11-20 16:51:42,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 16:51:42,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-20 16:51:42,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:42,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-20 16:51:42,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2024-11-20 16:51:42,339 INFO L87 Difference]: Start difference. First operand 299 states and 334 transitions. Second operand has 18 states, 17 states have (on average 4.882352941176471) internal successors, (83), 18 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:42,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:42,838 INFO L93 Difference]: Finished difference Result 365 states and 399 transitions. [2024-11-20 16:51:42,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 16:51:42,838 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.882352941176471) internal successors, (83), 18 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2024-11-20 16:51:42,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:42,840 INFO L225 Difference]: With dead ends: 365 [2024-11-20 16:51:42,840 INFO L226 Difference]: Without dead ends: 365 [2024-11-20 16:51:42,840 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2024-11-20 16:51:42,841 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 1615 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1615 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:42,841 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1615 Valid, 666 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 16:51:42,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2024-11-20 16:51:42,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 296. [2024-11-20 16:51:42,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 231 states have (on average 1.4155844155844155) internal successors, (327), 292 states have internal predecessors, (327), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:51:42,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 331 transitions. [2024-11-20 16:51:42,846 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 331 transitions. Word has length 111 [2024-11-20 16:51:42,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:42,846 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 331 transitions. [2024-11-20 16:51:42,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.882352941176471) internal successors, (83), 18 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:42,847 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 331 transitions. [2024-11-20 16:51:42,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-20 16:51:42,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:42,848 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 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] [2024-11-20 16:51:42,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-20 16:51:43,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-20 16:51:43,049 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:51:43,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:43,049 INFO L85 PathProgramCache]: Analyzing trace with hash -83942790, now seen corresponding path program 1 times [2024-11-20 16:51:43,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:43,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478890003] [2024-11-20 16:51:43,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:43,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:44,286 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:51:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:44,294 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:51:44,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:44,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478890003] [2024-11-20 16:51:44,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478890003] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:51:44,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974566322] [2024-11-20 16:51:44,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:44,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:44,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:51:44,298 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:51:44,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 16:51:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:44,732 INFO L255 TraceCheckSpWp]: Trace formula consists of 1554 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-20 16:51:44,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:51:44,763 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-20 16:51:44,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 19 treesize of output 18 [2024-11-20 16:51:44,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-20 16:51:44,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 16:51:44,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 16:51:44,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2024-11-20 16:51:44,974 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-20 16:51:44,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2024-11-20 16:51:46,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 16:51:46,249 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-20 16:51:46,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 63 [2024-11-20 16:51:46,267 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-20 16:51:46,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-20 16:51:46,350 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:51:46,351 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:51:47,462 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 16:51:47,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2024-11-20 16:51:47,763 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:51:47,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974566322] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 16:51:47,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 16:51:47,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 22 [2024-11-20 16:51:47,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54412874] [2024-11-20 16:51:47,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 16:51:47,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-20 16:51:47,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:47,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-20 16:51:47,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2024-11-20 16:51:47,767 INFO L87 Difference]: Start difference. First operand 296 states and 331 transitions. Second operand has 23 states, 22 states have (on average 4.045454545454546) internal successors, (89), 23 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:49,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:49,285 INFO L93 Difference]: Finished difference Result 482 states and 521 transitions. [2024-11-20 16:51:49,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 16:51:49,289 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 4.045454545454546) internal successors, (89), 23 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2024-11-20 16:51:49,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:49,291 INFO L225 Difference]: With dead ends: 482 [2024-11-20 16:51:49,291 INFO L226 Difference]: Without dead ends: 482 [2024-11-20 16:51:49,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 213 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=243, Invalid=749, Unknown=0, NotChecked=0, Total=992 [2024-11-20 16:51:49,292 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 1147 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:49,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 1052 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-20 16:51:49,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2024-11-20 16:51:49,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 291. [2024-11-20 16:51:49,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 227 states have (on average 1.4140969162995596) internal successors, (321), 287 states have internal predecessors, (321), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:51:49,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 325 transitions. [2024-11-20 16:51:49,301 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 325 transitions. Word has length 113 [2024-11-20 16:51:49,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:49,301 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 325 transitions. [2024-11-20 16:51:49,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 4.045454545454546) internal successors, (89), 23 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:49,302 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 325 transitions. [2024-11-20 16:51:49,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-20 16:51:49,302 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:49,303 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:49,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-20 16:51:49,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-20 16:51:49,503 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:51:49,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:49,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1677526631, now seen corresponding path program 1 times [2024-11-20 16:51:49,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:49,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748962914] [2024-11-20 16:51:49,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:49,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:49,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:49,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:51:49,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:49,985 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-20 16:51:49,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:49,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748962914] [2024-11-20 16:51:49,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748962914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:51:49,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:51:49,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 16:51:49,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548314292] [2024-11-20 16:51:49,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:51:49,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 16:51:49,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:49,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 16:51:49,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 16:51:49,988 INFO L87 Difference]: Start difference. First operand 291 states and 325 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:50,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:50,154 INFO L93 Difference]: Finished difference Result 338 states and 383 transitions. [2024-11-20 16:51:50,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 16:51:50,155 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 114 [2024-11-20 16:51:50,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:50,156 INFO L225 Difference]: With dead ends: 338 [2024-11-20 16:51:50,156 INFO L226 Difference]: Without dead ends: 338 [2024-11-20 16:51:50,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-20 16:51:50,157 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 357 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:50,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 672 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 16:51:50,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2024-11-20 16:51:50,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 294. [2024-11-20 16:51:50,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 230 states have (on average 1.4130434782608696) internal successors, (325), 290 states have internal predecessors, (325), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-20 16:51:50,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 329 transitions. [2024-11-20 16:51:50,165 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 329 transitions. Word has length 114 [2024-11-20 16:51:50,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:50,165 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 329 transitions. [2024-11-20 16:51:50,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:50,166 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 329 transitions. [2024-11-20 16:51:50,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-20 16:51:50,167 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:50,167 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:50,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-20 16:51:50,167 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:51:50,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:50,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1490505751, now seen corresponding path program 1 times [2024-11-20 16:51:50,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:50,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316525692] [2024-11-20 16:51:50,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:50,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:50,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:51:50,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:50,573 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:51:50,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:50,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316525692] [2024-11-20 16:51:50,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316525692] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:51:50,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199110804] [2024-11-20 16:51:50,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:50,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:50,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:51:50,576 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:51:50,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-20 16:51:51,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:51,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 1551 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 16:51:51,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:51:51,299 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:51:51,299 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:51:51,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-11-20 16:51:51,580 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:51:51,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199110804] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 16:51:51,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 16:51:51,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2024-11-20 16:51:51,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372436372] [2024-11-20 16:51:51,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 16:51:51,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 16:51:51,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:51,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 16:51:51,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-11-20 16:51:51,582 INFO L87 Difference]: Start difference. First operand 294 states and 329 transitions. Second operand has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 12 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:51,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:51,872 INFO L93 Difference]: Finished difference Result 426 states and 475 transitions. [2024-11-20 16:51:51,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-20 16:51:51,873 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 12 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 116 [2024-11-20 16:51:51,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:51,875 INFO L225 Difference]: With dead ends: 426 [2024-11-20 16:51:51,875 INFO L226 Difference]: Without dead ends: 426 [2024-11-20 16:51:51,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 227 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2024-11-20 16:51:51,876 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 687 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:51,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 945 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 16:51:51,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2024-11-20 16:51:51,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 339. [2024-11-20 16:51:51,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 275 states have (on average 1.4472727272727273) internal successors, (398), 334 states have internal predecessors, (398), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 16:51:51,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 404 transitions. [2024-11-20 16:51:51,891 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 404 transitions. Word has length 116 [2024-11-20 16:51:51,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:51,892 INFO L471 AbstractCegarLoop]: Abstraction has 339 states and 404 transitions. [2024-11-20 16:51:51,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 12 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:51,892 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 404 transitions. [2024-11-20 16:51:51,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-20 16:51:51,893 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:51,894 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:51,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-20 16:51:52,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-20 16:51:52,095 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:51:52,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:52,096 INFO L85 PathProgramCache]: Analyzing trace with hash -92028026, now seen corresponding path program 1 times [2024-11-20 16:51:52,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:52,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195546824] [2024-11-20 16:51:52,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:52,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:53,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:51:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:53,820 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:51:53,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:53,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195546824] [2024-11-20 16:51:53,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195546824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:51:53,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371749593] [2024-11-20 16:51:53,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:53,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:53,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:51:53,824 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:51:53,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-20 16:51:54,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:54,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 1551 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-20 16:51:54,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:51:54,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-20 16:51:54,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-20 16:51:54,369 INFO L349 Elim1Store]: treesize reduction 25, result has 30.6 percent of original size [2024-11-20 16:51:54,369 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 1 case distinctions, treesize of input 27 treesize of output 15 [2024-11-20 16:51:54,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 16:51:54,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-20 16:51:54,913 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:51:54,914 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:51:55,401 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:51:55,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371749593] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 16:51:55,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 16:51:55,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 22 [2024-11-20 16:51:55,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324106001] [2024-11-20 16:51:55,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 16:51:55,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-20 16:51:55,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:55,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-20 16:51:55,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2024-11-20 16:51:55,404 INFO L87 Difference]: Start difference. First operand 339 states and 404 transitions. Second operand has 22 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 22 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:55,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:55,697 INFO L93 Difference]: Finished difference Result 569 states and 690 transitions. [2024-11-20 16:51:55,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 16:51:55,697 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 22 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 117 [2024-11-20 16:51:55,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:55,699 INFO L225 Difference]: With dead ends: 569 [2024-11-20 16:51:55,699 INFO L226 Difference]: Without dead ends: 569 [2024-11-20 16:51:55,699 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=195, Invalid=675, Unknown=0, NotChecked=0, Total=870 [2024-11-20 16:51:55,700 INFO L432 NwaCegarLoop]: 238 mSDtfsCounter, 1128 mSDsluCounter, 2065 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1130 SdHoareTripleChecker+Valid, 2303 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:55,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1130 Valid, 2303 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 16:51:55,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2024-11-20 16:51:55,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 404. [2024-11-20 16:51:55,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 340 states have (on average 1.3676470588235294) internal successors, (465), 399 states have internal predecessors, (465), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 16:51:55,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 471 transitions. [2024-11-20 16:51:55,708 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 471 transitions. Word has length 117 [2024-11-20 16:51:55,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:55,708 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 471 transitions. [2024-11-20 16:51:55,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 22 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:55,709 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 471 transitions. [2024-11-20 16:51:55,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-20 16:51:55,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:55,710 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:55,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-20 16:51:55,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-20 16:51:55,910 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr83ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:51:55,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:55,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1038961600, now seen corresponding path program 1 times [2024-11-20 16:51:55,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:55,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212643103] [2024-11-20 16:51:55,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:55,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:56,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:56,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:51:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:56,690 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:51:56,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:56,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212643103] [2024-11-20 16:51:56,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212643103] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:51:56,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801407872] [2024-11-20 16:51:56,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:56,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:56,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:51:56,694 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:51:56,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-20 16:51:57,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:57,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 1559 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-20 16:51:57,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:51:57,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 16:51:57,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-20 16:51:57,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2024-11-20 16:51:57,483 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-11-20 16:51:57,483 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:51:57,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-20 16:51:57,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-20 16:51:57,768 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-11-20 16:51:57,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801407872] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 16:51:57,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 16:51:57,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 11] total 25 [2024-11-20 16:51:57,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037579251] [2024-11-20 16:51:57,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 16:51:57,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-20 16:51:57,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:57,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-20 16:51:57,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2024-11-20 16:51:57,771 INFO L87 Difference]: Start difference. First operand 404 states and 471 transitions. Second operand has 26 states, 25 states have (on average 3.84) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:58,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:58,199 INFO L93 Difference]: Finished difference Result 568 states and 690 transitions. [2024-11-20 16:51:58,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 16:51:58,200 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.84) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 117 [2024-11-20 16:51:58,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:58,201 INFO L225 Difference]: With dead ends: 568 [2024-11-20 16:51:58,202 INFO L226 Difference]: Without dead ends: 568 [2024-11-20 16:51:58,202 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=191, Invalid=739, Unknown=0, NotChecked=0, Total=930 [2024-11-20 16:51:58,203 INFO L432 NwaCegarLoop]: 244 mSDtfsCounter, 619 mSDsluCounter, 3207 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 3451 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:58,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 3451 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 16:51:58,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2024-11-20 16:51:58,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 517. [2024-11-20 16:51:58,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 451 states have (on average 1.4523281596452329) internal successors, (655), 510 states have internal predecessors, (655), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 16:51:58,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 665 transitions. [2024-11-20 16:51:58,214 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 665 transitions. Word has length 117 [2024-11-20 16:51:58,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:58,214 INFO L471 AbstractCegarLoop]: Abstraction has 517 states and 665 transitions. [2024-11-20 16:51:58,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.84) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:58,215 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 665 transitions. [2024-11-20 16:51:58,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-20 16:51:58,216 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:58,216 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:58,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-20 16:51:58,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-20 16:51:58,417 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:51:58,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:58,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1043430180, now seen corresponding path program 1 times [2024-11-20 16:51:58,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:58,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175737013] [2024-11-20 16:51:58,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:58,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:58,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:58,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:51:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:58,940 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-20 16:51:58,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:58,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175737013] [2024-11-20 16:51:58,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175737013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:51:58,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:51:58,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-20 16:51:58,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938217226] [2024-11-20 16:51:58,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:51:58,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 16:51:58,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:51:58,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 16:51:58,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-20 16:51:58,941 INFO L87 Difference]: Start difference. First operand 517 states and 665 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:59,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:51:59,022 INFO L93 Difference]: Finished difference Result 559 states and 713 transitions. [2024-11-20 16:51:59,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 16:51:59,022 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 117 [2024-11-20 16:51:59,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:51:59,024 INFO L225 Difference]: With dead ends: 559 [2024-11-20 16:51:59,025 INFO L226 Difference]: Without dead ends: 559 [2024-11-20 16:51:59,025 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-20 16:51:59,025 INFO L432 NwaCegarLoop]: 233 mSDtfsCounter, 41 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 16:51:59,027 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 1330 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 16:51:59,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2024-11-20 16:51:59,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 515. [2024-11-20 16:51:59,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 449 states have (on average 1.4365256124721604) internal successors, (645), 508 states have internal predecessors, (645), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 16:51:59,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 655 transitions. [2024-11-20 16:51:59,039 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 655 transitions. Word has length 117 [2024-11-20 16:51:59,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:51:59,039 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 655 transitions. [2024-11-20 16:51:59,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:51:59,039 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 655 transitions. [2024-11-20 16:51:59,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-20 16:51:59,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:51:59,040 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:51:59,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-20 16:51:59,041 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr84ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:51:59,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:51:59,041 INFO L85 PathProgramCache]: Analyzing trace with hash -2143038058, now seen corresponding path program 1 times [2024-11-20 16:51:59,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:51:59,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23999316] [2024-11-20 16:51:59,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:59,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:51:59,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:59,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:51:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:51:59,966 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:51:59,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:51:59,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23999316] [2024-11-20 16:51:59,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23999316] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:51:59,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846018057] [2024-11-20 16:51:59,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:51:59,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:51:59,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:51:59,968 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:51:59,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-20 16:52:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:00,454 INFO L255 TraceCheckSpWp]: Trace formula consists of 1561 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-20 16:52:00,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:52:00,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 16:52:00,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-20 16:52:00,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 16:52:00,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-20 16:52:00,666 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:52:00,666 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:52:00,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-20 16:52:00,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-11-20 16:52:00,810 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:52:00,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846018057] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 16:52:00,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 16:52:00,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 16 [2024-11-20 16:52:00,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275405311] [2024-11-20 16:52:00,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 16:52:00,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-20 16:52:00,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:52:00,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-20 16:52:00,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2024-11-20 16:52:00,812 INFO L87 Difference]: Start difference. First operand 515 states and 655 transitions. Second operand has 17 states, 16 states have (on average 5.3125) internal successors, (85), 17 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:00,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:52:00,990 INFO L93 Difference]: Finished difference Result 559 states and 679 transitions. [2024-11-20 16:52:00,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 16:52:00,991 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.3125) internal successors, (85), 17 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 118 [2024-11-20 16:52:00,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:52:00,992 INFO L225 Difference]: With dead ends: 559 [2024-11-20 16:52:00,992 INFO L226 Difference]: Without dead ends: 559 [2024-11-20 16:52:00,993 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 230 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2024-11-20 16:52:00,993 INFO L432 NwaCegarLoop]: 242 mSDtfsCounter, 449 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 16:52:00,993 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 1208 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 16:52:00,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2024-11-20 16:52:00,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 516. [2024-11-20 16:52:00,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 450 states have (on average 1.4355555555555555) internal successors, (646), 509 states have internal predecessors, (646), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 16:52:01,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 656 transitions. [2024-11-20 16:52:01,001 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 656 transitions. Word has length 118 [2024-11-20 16:52:01,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:52:01,001 INFO L471 AbstractCegarLoop]: Abstraction has 516 states and 656 transitions. [2024-11-20 16:52:01,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.3125) internal successors, (85), 17 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:01,002 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 656 transitions. [2024-11-20 16:52:01,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-20 16:52:01,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:52:01,003 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:52:01,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-20 16:52:01,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:52:01,204 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr87ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:52:01,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:52:01,205 INFO L85 PathProgramCache]: Analyzing trace with hash -2143083802, now seen corresponding path program 1 times [2024-11-20 16:52:01,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:52:01,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933805642] [2024-11-20 16:52:01,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:52:01,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:52:01,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:01,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:52:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:01,364 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-20 16:52:01,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:52:01,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933805642] [2024-11-20 16:52:01,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933805642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:52:01,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:52:01,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 16:52:01,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656525638] [2024-11-20 16:52:01,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:52:01,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 16:52:01,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:52:01,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 16:52:01,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 16:52:01,366 INFO L87 Difference]: Start difference. First operand 516 states and 656 transitions. Second operand has 3 states, 2 states have (on average 22.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:01,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:52:01,395 INFO L93 Difference]: Finished difference Result 515 states and 654 transitions. [2024-11-20 16:52:01,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 16:52:01,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 22.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 118 [2024-11-20 16:52:01,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:52:01,398 INFO L225 Difference]: With dead ends: 515 [2024-11-20 16:52:01,398 INFO L226 Difference]: Without dead ends: 515 [2024-11-20 16:52:01,399 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 16:52:01,399 INFO L432 NwaCegarLoop]: 228 mSDtfsCounter, 176 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 16:52:01,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 250 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 16:52:01,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2024-11-20 16:52:01,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2024-11-20 16:52:01,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 450 states have (on average 1.431111111111111) internal successors, (644), 508 states have internal predecessors, (644), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 16:52:01,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 654 transitions. [2024-11-20 16:52:01,411 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 654 transitions. Word has length 118 [2024-11-20 16:52:01,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:52:01,413 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 654 transitions. [2024-11-20 16:52:01,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 22.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:01,413 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 654 transitions. [2024-11-20 16:52:01,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-20 16:52:01,414 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:52:01,414 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:52:01,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-20 16:52:01,415 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr85ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:52:01,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:52:01,415 INFO L85 PathProgramCache]: Analyzing trace with hash -2009669886, now seen corresponding path program 1 times [2024-11-20 16:52:01,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:52:01,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880323694] [2024-11-20 16:52:01,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:52:01,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:52:01,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:02,306 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:52:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:02,312 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:52:02,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:52:02,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880323694] [2024-11-20 16:52:02,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880323694] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:52:02,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139541460] [2024-11-20 16:52:02,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:52:02,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:52:02,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:52:02,313 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:52:02,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-20 16:52:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:02,827 INFO L255 TraceCheckSpWp]: Trace formula consists of 1563 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-20 16:52:02,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:52:02,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-20 16:52:02,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 16:52:02,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-20 16:52:02,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 16:52:03,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-20 16:52:03,052 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:52:03,052 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:52:03,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-11-20 16:52:03,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-20 16:52:03,278 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:52:03,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139541460] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 16:52:03,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 16:52:03,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 19 [2024-11-20 16:52:03,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014224158] [2024-11-20 16:52:03,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 16:52:03,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-20 16:52:03,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:52:03,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-20 16:52:03,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-11-20 16:52:03,280 INFO L87 Difference]: Start difference. First operand 515 states and 654 transitions. Second operand has 20 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 20 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:03,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:52:03,787 INFO L93 Difference]: Finished difference Result 545 states and 661 transitions. [2024-11-20 16:52:03,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 16:52:03,788 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 20 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 119 [2024-11-20 16:52:03,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:52:03,789 INFO L225 Difference]: With dead ends: 545 [2024-11-20 16:52:03,789 INFO L226 Difference]: Without dead ends: 545 [2024-11-20 16:52:03,789 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2024-11-20 16:52:03,790 INFO L432 NwaCegarLoop]: 198 mSDtfsCounter, 546 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 1808 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 16:52:03,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 1808 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 16:52:03,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2024-11-20 16:52:03,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 516. [2024-11-20 16:52:03,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 451 states have (on average 1.4301552106430155) internal successors, (645), 509 states have internal predecessors, (645), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 16:52:03,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 655 transitions. [2024-11-20 16:52:03,796 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 655 transitions. Word has length 119 [2024-11-20 16:52:03,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:52:03,797 INFO L471 AbstractCegarLoop]: Abstraction has 516 states and 655 transitions. [2024-11-20 16:52:03,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 20 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:03,797 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 655 transitions. [2024-11-20 16:52:03,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-20 16:52:03,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:52:03,798 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:52:03,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-20 16:52:03,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:52:03,998 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:52:03,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:52:03,999 INFO L85 PathProgramCache]: Analyzing trace with hash -2127993722, now seen corresponding path program 1 times [2024-11-20 16:52:03,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:52:03,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115903989] [2024-11-20 16:52:03,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:52:03,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:52:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:04,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:52:04,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:04,209 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-20 16:52:04,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:52:04,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115903989] [2024-11-20 16:52:04,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115903989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:52:04,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:52:04,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 16:52:04,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403389238] [2024-11-20 16:52:04,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:52:04,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 16:52:04,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:52:04,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 16:52:04,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 16:52:04,211 INFO L87 Difference]: Start difference. First operand 516 states and 655 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:04,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:52:04,225 INFO L93 Difference]: Finished difference Result 514 states and 646 transitions. [2024-11-20 16:52:04,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 16:52:04,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 120 [2024-11-20 16:52:04,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:52:04,227 INFO L225 Difference]: With dead ends: 514 [2024-11-20 16:52:04,227 INFO L226 Difference]: Without dead ends: 514 [2024-11-20 16:52:04,227 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 16:52:04,228 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 0 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 16:52:04,228 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 700 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 16:52:04,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2024-11-20 16:52:04,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 514. [2024-11-20 16:52:04,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 449 states have (on average 1.4164810690423162) internal successors, (636), 507 states have internal predecessors, (636), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 16:52:04,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 646 transitions. [2024-11-20 16:52:04,237 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 646 transitions. Word has length 120 [2024-11-20 16:52:04,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:52:04,238 INFO L471 AbstractCegarLoop]: Abstraction has 514 states and 646 transitions. [2024-11-20 16:52:04,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:04,238 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 646 transitions. [2024-11-20 16:52:04,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-20 16:52:04,239 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:52:04,239 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:52:04,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-20 16:52:04,239 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr90ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:52:04,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:52:04,239 INFO L85 PathProgramCache]: Analyzing trace with hash 79790336, now seen corresponding path program 1 times [2024-11-20 16:52:04,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:52:04,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287858963] [2024-11-20 16:52:04,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:52:04,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:52:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:04,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:52:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:04,379 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-20 16:52:04,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:52:04,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287858963] [2024-11-20 16:52:04,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287858963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:52:04,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:52:04,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 16:52:04,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086028600] [2024-11-20 16:52:04,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:52:04,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 16:52:04,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:52:04,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 16:52:04,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 16:52:04,382 INFO L87 Difference]: Start difference. First operand 514 states and 646 transitions. Second operand has 3 states, 2 states have (on average 23.5) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:04,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:52:04,422 INFO L93 Difference]: Finished difference Result 513 states and 645 transitions. [2024-11-20 16:52:04,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 16:52:04,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 23.5) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2024-11-20 16:52:04,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:52:04,424 INFO L225 Difference]: With dead ends: 513 [2024-11-20 16:52:04,424 INFO L226 Difference]: Without dead ends: 513 [2024-11-20 16:52:04,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 16:52:04,425 INFO L432 NwaCegarLoop]: 224 mSDtfsCounter, 179 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 16:52:04,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 243 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 16:52:04,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2024-11-20 16:52:04,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 513. [2024-11-20 16:52:04,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 449 states have (on average 1.4142538975501113) internal successors, (635), 506 states have internal predecessors, (635), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 16:52:04,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 645 transitions. [2024-11-20 16:52:04,435 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 645 transitions. Word has length 121 [2024-11-20 16:52:04,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:52:04,436 INFO L471 AbstractCegarLoop]: Abstraction has 513 states and 645 transitions. [2024-11-20 16:52:04,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 23.5) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:04,436 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 645 transitions. [2024-11-20 16:52:04,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-20 16:52:04,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:52:04,437 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 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] [2024-11-20 16:52:04,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-20 16:52:04,437 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:52:04,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:52:04,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1769002747, now seen corresponding path program 1 times [2024-11-20 16:52:04,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:52:04,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608263228] [2024-11-20 16:52:04,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:52:04,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:52:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:04,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:52:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:04,763 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:52:04,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:52:04,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608263228] [2024-11-20 16:52:04,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608263228] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:52:04,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7266633] [2024-11-20 16:52:04,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:52:04,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:52:04,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:52:04,767 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:52:04,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-20 16:52:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:05,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 1569 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 16:52:05,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:52:05,471 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:52:05,471 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:52:05,561 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:52:05,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7266633] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 16:52:05,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 16:52:05,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-20 16:52:05,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215039428] [2024-11-20 16:52:05,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 16:52:05,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 16:52:05,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:52:05,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 16:52:05,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-20 16:52:05,563 INFO L87 Difference]: Start difference. First operand 513 states and 645 transitions. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:05,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:52:05,658 INFO L93 Difference]: Finished difference Result 596 states and 709 transitions. [2024-11-20 16:52:05,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 16:52:05,659 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 122 [2024-11-20 16:52:05,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:52:05,661 INFO L225 Difference]: With dead ends: 596 [2024-11-20 16:52:05,661 INFO L226 Difference]: Without dead ends: 596 [2024-11-20 16:52:05,661 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 239 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-20 16:52:05,661 INFO L432 NwaCegarLoop]: 242 mSDtfsCounter, 100 mSDsluCounter, 1643 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 1885 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 16:52:05,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 1885 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 16:52:05,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2024-11-20 16:52:05,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 515. [2024-11-20 16:52:05,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 451 states have (on average 1.4124168514412416) internal successors, (637), 508 states have internal predecessors, (637), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 16:52:05,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 647 transitions. [2024-11-20 16:52:05,671 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 647 transitions. Word has length 122 [2024-11-20 16:52:05,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:52:05,672 INFO L471 AbstractCegarLoop]: Abstraction has 515 states and 647 transitions. [2024-11-20 16:52:05,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:05,672 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 647 transitions. [2024-11-20 16:52:05,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-20 16:52:05,673 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:52:05,673 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:52:05,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-20 16:52:05,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-20 16:52:05,874 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr91ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:52:05,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:52:05,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1821466390, now seen corresponding path program 1 times [2024-11-20 16:52:05,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:52:05,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88488704] [2024-11-20 16:52:05,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:52:05,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:52:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:06,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:52:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:06,204 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:52:06,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:52:06,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88488704] [2024-11-20 16:52:06,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88488704] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:52:06,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780044291] [2024-11-20 16:52:06,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:52:06,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:52:06,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:52:06,207 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:52:06,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-20 16:52:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:06,731 INFO L255 TraceCheckSpWp]: Trace formula consists of 1563 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 16:52:06,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:52:06,800 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:52:06,801 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:52:06,874 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:52:06,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780044291] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 16:52:06,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 16:52:06,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-20 16:52:06,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800675556] [2024-11-20 16:52:06,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 16:52:06,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-20 16:52:06,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:52:06,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-20 16:52:06,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-20 16:52:06,876 INFO L87 Difference]: Start difference. First operand 515 states and 647 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:06,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:52:06,944 INFO L93 Difference]: Finished difference Result 518 states and 646 transitions. [2024-11-20 16:52:06,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 16:52:06,945 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 122 [2024-11-20 16:52:06,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:52:06,947 INFO L225 Difference]: With dead ends: 518 [2024-11-20 16:52:06,947 INFO L226 Difference]: Without dead ends: 518 [2024-11-20 16:52:06,947 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 241 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-20 16:52:06,947 INFO L432 NwaCegarLoop]: 224 mSDtfsCounter, 227 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 16:52:06,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 1086 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 16:52:06,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2024-11-20 16:52:06,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 511. [2024-11-20 16:52:06,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 447 states have (on average 1.407158836689038) internal successors, (629), 504 states have internal predecessors, (629), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 16:52:06,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 639 transitions. [2024-11-20 16:52:06,955 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 639 transitions. Word has length 122 [2024-11-20 16:52:06,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:52:06,955 INFO L471 AbstractCegarLoop]: Abstraction has 511 states and 639 transitions. [2024-11-20 16:52:06,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:06,956 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 639 transitions. [2024-11-20 16:52:06,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-20 16:52:06,956 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:52:06,957 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:52:06,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-20 16:52:07,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-20 16:52:07,157 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr59REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:52:07,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:52:07,158 INFO L85 PathProgramCache]: Analyzing trace with hash -596758811, now seen corresponding path program 1 times [2024-11-20 16:52:07,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:52:07,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999130813] [2024-11-20 16:52:07,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:52:07,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:52:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:07,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:52:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:07,314 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-20 16:52:07,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:52:07,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999130813] [2024-11-20 16:52:07,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999130813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:52:07,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:52:07,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 16:52:07,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479947187] [2024-11-20 16:52:07,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:52:07,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 16:52:07,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:52:07,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 16:52:07,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 16:52:07,316 INFO L87 Difference]: Start difference. First operand 511 states and 639 transitions. Second operand has 3 states, 2 states have (on average 24.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:07,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:52:07,396 INFO L93 Difference]: Finished difference Result 510 states and 637 transitions. [2024-11-20 16:52:07,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 16:52:07,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 24.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 122 [2024-11-20 16:52:07,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:52:07,397 INFO L225 Difference]: With dead ends: 510 [2024-11-20 16:52:07,398 INFO L226 Difference]: Without dead ends: 510 [2024-11-20 16:52:07,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 16:52:07,398 INFO L432 NwaCegarLoop]: 235 mSDtfsCounter, 1 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 16:52:07,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 392 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 16:52:07,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2024-11-20 16:52:07,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 510. [2024-11-20 16:52:07,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 447 states have (on average 1.4026845637583893) internal successors, (627), 503 states have internal predecessors, (627), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 16:52:07,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 637 transitions. [2024-11-20 16:52:07,404 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 637 transitions. Word has length 122 [2024-11-20 16:52:07,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:52:07,405 INFO L471 AbstractCegarLoop]: Abstraction has 510 states and 637 transitions. [2024-11-20 16:52:07,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 24.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:07,405 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 637 transitions. [2024-11-20 16:52:07,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-20 16:52:07,406 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:52:07,406 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:52:07,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-20 16:52:07,406 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:52:07,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:52:07,407 INFO L85 PathProgramCache]: Analyzing trace with hash -596758810, now seen corresponding path program 1 times [2024-11-20 16:52:07,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:52:07,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642556712] [2024-11-20 16:52:07,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:52:07,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:52:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:07,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:52:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:07,673 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-20 16:52:07,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:52:07,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642556712] [2024-11-20 16:52:07,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642556712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:52:07,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:52:07,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 16:52:07,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255520851] [2024-11-20 16:52:07,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:52:07,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 16:52:07,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:52:07,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 16:52:07,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 16:52:07,676 INFO L87 Difference]: Start difference. First operand 510 states and 637 transitions. Second operand has 3 states, 2 states have (on average 24.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:07,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:52:07,777 INFO L93 Difference]: Finished difference Result 509 states and 635 transitions. [2024-11-20 16:52:07,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 16:52:07,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 24.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 122 [2024-11-20 16:52:07,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:52:07,780 INFO L225 Difference]: With dead ends: 509 [2024-11-20 16:52:07,780 INFO L226 Difference]: Without dead ends: 509 [2024-11-20 16:52:07,780 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 16:52:07,781 INFO L432 NwaCegarLoop]: 235 mSDtfsCounter, 0 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 16:52:07,781 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 397 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 16:52:07,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2024-11-20 16:52:07,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 509. [2024-11-20 16:52:07,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 447 states have (on average 1.3982102908277405) internal successors, (625), 502 states have internal predecessors, (625), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 16:52:07,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 635 transitions. [2024-11-20 16:52:07,788 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 635 transitions. Word has length 122 [2024-11-20 16:52:07,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:52:07,789 INFO L471 AbstractCegarLoop]: Abstraction has 509 states and 635 transitions. [2024-11-20 16:52:07,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 24.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:07,789 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 635 transitions. [2024-11-20 16:52:07,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-20 16:52:07,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:52:07,790 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:52:07,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-20 16:52:07,791 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr88ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:52:07,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:52:07,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1111101113, now seen corresponding path program 1 times [2024-11-20 16:52:07,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:52:07,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445222148] [2024-11-20 16:52:07,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:52:07,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:52:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:09,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:52:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:09,062 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:52:09,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:52:09,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445222148] [2024-11-20 16:52:09,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445222148] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:52:09,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66803360] [2024-11-20 16:52:09,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:52:09,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:52:09,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:52:09,067 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:52:09,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-20 16:52:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:09,658 INFO L255 TraceCheckSpWp]: Trace formula consists of 1574 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-20 16:52:09,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:52:09,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-20 16:52:09,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-20 16:52:09,696 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-20 16:52:09,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-20 16:52:09,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 16:52:09,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-20 16:52:09,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 16:52:10,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-20 16:52:10,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-20 16:52:10,028 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:52:10,028 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:52:10,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-20 16:52:10,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-20 16:52:10,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-20 16:52:10,320 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:52:10,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66803360] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 16:52:10,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 16:52:10,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 20 [2024-11-20 16:52:10,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114267920] [2024-11-20 16:52:10,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 16:52:10,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-20 16:52:10,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:52:10,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-20 16:52:10,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2024-11-20 16:52:10,322 INFO L87 Difference]: Start difference. First operand 509 states and 635 transitions. Second operand has 21 states, 20 states have (on average 5.0) internal successors, (100), 21 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:10,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:52:10,819 INFO L93 Difference]: Finished difference Result 540 states and 649 transitions. [2024-11-20 16:52:10,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 16:52:10,819 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 5.0) internal successors, (100), 21 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 125 [2024-11-20 16:52:10,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:52:10,821 INFO L225 Difference]: With dead ends: 540 [2024-11-20 16:52:10,821 INFO L226 Difference]: Without dead ends: 540 [2024-11-20 16:52:10,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 243 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2024-11-20 16:52:10,822 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 751 mSDsluCounter, 1763 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 16:52:10,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 1947 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 16:52:10,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2024-11-20 16:52:10,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 513. [2024-11-20 16:52:10,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 451 states have (on average 1.394678492239468) internal successors, (629), 506 states have internal predecessors, (629), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 16:52:10,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 639 transitions. [2024-11-20 16:52:10,828 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 639 transitions. Word has length 125 [2024-11-20 16:52:10,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:52:10,828 INFO L471 AbstractCegarLoop]: Abstraction has 513 states and 639 transitions. [2024-11-20 16:52:10,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 5.0) internal successors, (100), 21 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:10,828 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 639 transitions. [2024-11-20 16:52:10,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-20 16:52:10,829 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:52:10,829 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:52:10,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-20 16:52:11,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-20 16:52:11,030 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:52:11,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:52:11,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1173562013, now seen corresponding path program 1 times [2024-11-20 16:52:11,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:52:11,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455242351] [2024-11-20 16:52:11,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:52:11,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:52:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:11,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:52:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:11,239 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-20 16:52:11,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:52:11,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455242351] [2024-11-20 16:52:11,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455242351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:52:11,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:52:11,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 16:52:11,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631652462] [2024-11-20 16:52:11,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:52:11,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 16:52:11,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:52:11,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 16:52:11,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 16:52:11,241 INFO L87 Difference]: Start difference. First operand 513 states and 639 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:11,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:52:11,257 INFO L93 Difference]: Finished difference Result 511 states and 631 transitions. [2024-11-20 16:52:11,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 16:52:11,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 125 [2024-11-20 16:52:11,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:52:11,258 INFO L225 Difference]: With dead ends: 511 [2024-11-20 16:52:11,258 INFO L226 Difference]: Without dead ends: 511 [2024-11-20 16:52:11,259 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 16:52:11,259 INFO L432 NwaCegarLoop]: 233 mSDtfsCounter, 2 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 16:52:11,259 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 686 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 16:52:11,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2024-11-20 16:52:11,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 505. [2024-11-20 16:52:11,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 443 states have (on average 1.3837471783295712) internal successors, (613), 498 states have internal predecessors, (613), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 16:52:11,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 623 transitions. [2024-11-20 16:52:11,266 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 623 transitions. Word has length 125 [2024-11-20 16:52:11,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:52:11,267 INFO L471 AbstractCegarLoop]: Abstraction has 505 states and 623 transitions. [2024-11-20 16:52:11,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:11,267 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 623 transitions. [2024-11-20 16:52:11,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-20 16:52:11,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:52:11,268 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:52:11,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-20 16:52:11,268 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:52:11,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:52:11,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1967271444, now seen corresponding path program 1 times [2024-11-20 16:52:11,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:52:11,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508674006] [2024-11-20 16:52:11,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:52:11,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:52:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:11,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:52:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:11,602 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-20 16:52:11,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:52:11,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508674006] [2024-11-20 16:52:11,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508674006] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:52:11,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:52:11,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 16:52:11,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365282896] [2024-11-20 16:52:11,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:52:11,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 16:52:11,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:52:11,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 16:52:11,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-20 16:52:11,604 INFO L87 Difference]: Start difference. First operand 505 states and 623 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:11,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:52:11,706 INFO L93 Difference]: Finished difference Result 523 states and 644 transitions. [2024-11-20 16:52:11,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 16:52:11,707 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 126 [2024-11-20 16:52:11,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:52:11,708 INFO L225 Difference]: With dead ends: 523 [2024-11-20 16:52:11,708 INFO L226 Difference]: Without dead ends: 523 [2024-11-20 16:52:11,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-20 16:52:11,709 INFO L432 NwaCegarLoop]: 219 mSDtfsCounter, 19 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 16:52:11,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1291 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 16:52:11,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2024-11-20 16:52:11,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 512. [2024-11-20 16:52:11,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 450 states have (on average 1.3755555555555556) internal successors, (619), 505 states have internal predecessors, (619), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-20 16:52:11,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 629 transitions. [2024-11-20 16:52:11,721 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 629 transitions. Word has length 126 [2024-11-20 16:52:11,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:52:11,722 INFO L471 AbstractCegarLoop]: Abstraction has 512 states and 629 transitions. [2024-11-20 16:52:11,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:11,722 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 629 transitions. [2024-11-20 16:52:11,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-20 16:52:11,723 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:52:11,723 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:52:11,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-20 16:52:11,723 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:52:11,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:52:11,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1781837507, now seen corresponding path program 1 times [2024-11-20 16:52:11,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:52:11,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025884023] [2024-11-20 16:52:11,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:52:11,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:52:11,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:12,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:52:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:12,229 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:52:12,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:52:12,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025884023] [2024-11-20 16:52:12,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025884023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:52:12,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049774614] [2024-11-20 16:52:12,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:52:12,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:52:12,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:52:12,232 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:52:12,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-20 16:52:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:12,927 INFO L255 TraceCheckSpWp]: Trace formula consists of 1629 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-20 16:52:12,930 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:52:13,075 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:52:13,075 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:52:13,349 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:52:13,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049774614] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 16:52:13,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 16:52:13,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-11-20 16:52:13,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313776339] [2024-11-20 16:52:13,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 16:52:13,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 16:52:13,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:52:13,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 16:52:13,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-20 16:52:13,350 INFO L87 Difference]: Start difference. First operand 512 states and 629 transitions. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:13,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:52:13,436 INFO L93 Difference]: Finished difference Result 481 states and 545 transitions. [2024-11-20 16:52:13,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 16:52:13,437 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 127 [2024-11-20 16:52:13,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:52:13,438 INFO L225 Difference]: With dead ends: 481 [2024-11-20 16:52:13,438 INFO L226 Difference]: Without dead ends: 481 [2024-11-20 16:52:13,438 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 250 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-20 16:52:13,439 INFO L432 NwaCegarLoop]: 224 mSDtfsCounter, 42 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 16:52:13,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 1780 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 16:52:13,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2024-11-20 16:52:13,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 420. [2024-11-20 16:52:13,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 360 states have (on average 1.325) internal successors, (477), 415 states have internal predecessors, (477), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 16:52:13,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 483 transitions. [2024-11-20 16:52:13,445 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 483 transitions. Word has length 127 [2024-11-20 16:52:13,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:52:13,445 INFO L471 AbstractCegarLoop]: Abstraction has 420 states and 483 transitions. [2024-11-20 16:52:13,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:13,446 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 483 transitions. [2024-11-20 16:52:13,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-20 16:52:13,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:52:13,446 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:52:13,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-20 16:52:13,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:52:13,648 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr91ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:52:13,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:52:13,648 INFO L85 PathProgramCache]: Analyzing trace with hash -499210225, now seen corresponding path program 1 times [2024-11-20 16:52:13,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:52:13,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074343325] [2024-11-20 16:52:13,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:52:13,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:52:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:15,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:52:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:15,043 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:52:15,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:52:15,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074343325] [2024-11-20 16:52:15,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074343325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:52:15,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518816297] [2024-11-20 16:52:15,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:52:15,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:52:15,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:52:15,046 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:52:15,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-20 16:52:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:15,654 INFO L255 TraceCheckSpWp]: Trace formula consists of 1581 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-20 16:52:15,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:52:15,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-11-20 16:52:15,677 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-20 16:52:15,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-20 16:52:15,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 16:52:15,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-20 16:52:15,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 16:52:16,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-20 16:52:16,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-20 16:52:16,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-20 16:52:16,103 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:52:16,103 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 16:52:16,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-20 16:52:16,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2024-11-20 16:52:16,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-20 16:52:16,522 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-20 16:52:16,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2024-11-20 16:52:16,534 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:52:16,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518816297] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 16:52:16,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 16:52:16,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 23 [2024-11-20 16:52:16,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772295185] [2024-11-20 16:52:16,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 16:52:16,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-20 16:52:16,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:52:16,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-20 16:52:16,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2024-11-20 16:52:16,536 INFO L87 Difference]: Start difference. First operand 420 states and 483 transitions. Second operand has 24 states, 23 states have (on average 4.478260869565218) internal successors, (103), 24 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:17,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:52:17,102 INFO L93 Difference]: Finished difference Result 434 states and 496 transitions. [2024-11-20 16:52:17,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-20 16:52:17,102 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.478260869565218) internal successors, (103), 24 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 128 [2024-11-20 16:52:17,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:52:17,104 INFO L225 Difference]: With dead ends: 434 [2024-11-20 16:52:17,104 INFO L226 Difference]: Without dead ends: 434 [2024-11-20 16:52:17,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 247 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=203, Invalid=553, Unknown=0, NotChecked=0, Total=756 [2024-11-20 16:52:17,104 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 452 mSDsluCounter, 1876 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 2039 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-20 16:52:17,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 2039 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1150 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-20 16:52:17,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2024-11-20 16:52:17,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 423. [2024-11-20 16:52:17,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 363 states have (on average 1.322314049586777) internal successors, (480), 418 states have internal predecessors, (480), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 16:52:17,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 486 transitions. [2024-11-20 16:52:17,109 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 486 transitions. Word has length 128 [2024-11-20 16:52:17,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:52:17,110 INFO L471 AbstractCegarLoop]: Abstraction has 423 states and 486 transitions. [2024-11-20 16:52:17,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.478260869565218) internal successors, (103), 24 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:17,110 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 486 transitions. [2024-11-20 16:52:17,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-20 16:52:17,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:52:17,111 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:52:17,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-20 16:52:17,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-20 16:52:17,312 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr92ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:52:17,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:52:17,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1704352701, now seen corresponding path program 1 times [2024-11-20 16:52:17,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:52:17,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696882684] [2024-11-20 16:52:17,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:52:17,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:52:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:17,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:52:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:17,517 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2024-11-20 16:52:17,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:52:17,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696882684] [2024-11-20 16:52:17,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696882684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:52:17,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:52:17,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 16:52:17,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972743508] [2024-11-20 16:52:17,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:52:17,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 16:52:17,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:52:17,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 16:52:17,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 16:52:17,519 INFO L87 Difference]: Start difference. First operand 423 states and 486 transitions. Second operand has 3 states, 2 states have (on average 27.5) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:17,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:52:17,529 INFO L93 Difference]: Finished difference Result 422 states and 485 transitions. [2024-11-20 16:52:17,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 16:52:17,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 27.5) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 129 [2024-11-20 16:52:17,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:52:17,530 INFO L225 Difference]: With dead ends: 422 [2024-11-20 16:52:17,530 INFO L226 Difference]: Without dead ends: 422 [2024-11-20 16:52:17,530 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 16:52:17,531 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 171 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 16:52:17,531 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 242 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 16:52:17,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-11-20 16:52:17,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2024-11-20 16:52:17,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 363 states have (on average 1.3195592286501376) internal successors, (479), 417 states have internal predecessors, (479), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 16:52:17,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 485 transitions. [2024-11-20 16:52:17,536 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 485 transitions. Word has length 129 [2024-11-20 16:52:17,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:52:17,536 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 485 transitions. [2024-11-20 16:52:17,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 27.5) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:17,537 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 485 transitions. [2024-11-20 16:52:17,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-20 16:52:17,537 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:52:17,537 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:52:17,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-20 16:52:17,538 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr93ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:52:17,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:52:17,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1295326673, now seen corresponding path program 1 times [2024-11-20 16:52:17,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:52:17,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375103512] [2024-11-20 16:52:17,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:52:17,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:52:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:17,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:52:17,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:17,779 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2024-11-20 16:52:17,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:52:17,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375103512] [2024-11-20 16:52:17,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375103512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 16:52:17,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 16:52:17,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 16:52:17,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084760711] [2024-11-20 16:52:17,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 16:52:17,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 16:52:17,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 16:52:17,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 16:52:17,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 16:52:17,781 INFO L87 Difference]: Start difference. First operand 422 states and 485 transitions. Second operand has 3 states, 2 states have (on average 28.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:17,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 16:52:17,816 INFO L93 Difference]: Finished difference Result 421 states and 484 transitions. [2024-11-20 16:52:17,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 16:52:17,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 28.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 130 [2024-11-20 16:52:17,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 16:52:17,818 INFO L225 Difference]: With dead ends: 421 [2024-11-20 16:52:17,819 INFO L226 Difference]: Without dead ends: 421 [2024-11-20 16:52:17,819 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 16:52:17,819 INFO L432 NwaCegarLoop]: 221 mSDtfsCounter, 172 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 16:52:17,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 225 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 16:52:17,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2024-11-20 16:52:17,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2024-11-20 16:52:17,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 363 states have (on average 1.3168044077134986) internal successors, (478), 416 states have internal predecessors, (478), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-20 16:52:17,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 484 transitions. [2024-11-20 16:52:17,824 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 484 transitions. Word has length 130 [2024-11-20 16:52:17,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 16:52:17,824 INFO L471 AbstractCegarLoop]: Abstraction has 421 states and 484 transitions. [2024-11-20 16:52:17,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 28.0) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-20 16:52:17,825 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 484 transitions. [2024-11-20 16:52:17,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-20 16:52:17,825 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 16:52:17,826 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 16:52:17,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-11-20 16:52:17,826 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr94ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-20 16:52:17,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 16:52:17,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1500421695, now seen corresponding path program 1 times [2024-11-20 16:52:17,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 16:52:17,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452410997] [2024-11-20 16:52:17,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:52:17,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 16:52:17,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:19,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-20 16:52:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:19,341 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-20 16:52:19,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 16:52:19,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452410997] [2024-11-20 16:52:19,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452410997] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 16:52:19,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197811335] [2024-11-20 16:52:19,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 16:52:19,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 16:52:19,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 16:52:19,343 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-20 16:52:19,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-20 16:52:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 16:52:19,980 INFO L255 TraceCheckSpWp]: Trace formula consists of 1588 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-20 16:52:19,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 16:52:19,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-20 16:52:20,061 INFO L349 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2024-11-20 16:52:20,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 32 [2024-11-20 16:52:20,153 INFO L349 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2024-11-20 16:52:20,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 28 [2024-11-20 16:52:20,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-20 16:52:20,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-20 16:52:20,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1