./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/busybox-1.22.0/dirname-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/busybox-1.22.0/dirname-1.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 deade1e5790a25ffe3efe3f50079c7cd07ab83afaa52029d4373e6401cf093c7 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 09:57:50,664 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 09:57:50,758 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-09 09:57:50,763 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 09:57:50,763 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 09:57:50,811 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 09:57:50,811 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 09:57:50,811 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 09:57:50,812 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 09:57:50,817 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 09:57:50,817 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 09:57:50,817 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 09:57:50,818 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 09:57:50,818 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 09:57:50,818 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 09:57:50,819 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 09:57:50,819 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 09:57:50,819 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 09:57:50,819 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 09:57:50,819 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 09:57:50,820 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 09:57:50,820 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 09:57:50,821 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 09:57:50,821 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 09:57:50,821 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 09:57:50,821 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 09:57:50,822 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 09:57:50,822 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 09:57:50,822 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 09:57:50,822 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 09:57:50,823 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 09:57:50,823 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 09:57:50,823 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 09:57:50,824 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 09:57:50,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 09:57:50,825 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 09:57:50,825 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 09:57:50,825 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 09:57:50,826 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 09:57:50,826 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> deade1e5790a25ffe3efe3f50079c7cd07ab83afaa52029d4373e6401cf093c7 [2024-11-09 09:57:51,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 09:57:51,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 09:57:51,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 09:57:51,101 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 09:57:51,101 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 09:57:51,102 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/busybox-1.22.0/dirname-1.i [2024-11-09 09:57:52,616 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 09:57:52,955 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 09:57:52,955 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/dirname-1.i [2024-11-09 09:57:52,981 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e60269f9e/be3299bdd26547329ece87cff5d6e27e/FLAGb998fa821 [2024-11-09 09:57:52,998 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e60269f9e/be3299bdd26547329ece87cff5d6e27e [2024-11-09 09:57:53,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 09:57:53,002 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 09:57:53,004 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 09:57:53,005 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 09:57:53,010 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 09:57:53,011 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:57:52" (1/1) ... [2024-11-09 09:57:53,012 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@124727b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:57:53, skipping insertion in model container [2024-11-09 09:57:53,014 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:57:52" (1/1) ... [2024-11-09 09:57:53,076 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 09:57:53,560 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 09:57:53,574 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 09:57:53,575 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 09:57:53,586 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 09:57:53,598 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 09:57:53,607 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 09:57:53,631 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 09:57:53,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 09:57:53,841 INFO L204 MainTranslator]: Completed translation [2024-11-09 09:57:53,842 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:57:53 WrapperNode [2024-11-09 09:57:53,842 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 09:57:53,843 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 09:57:53,843 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 09:57:53,843 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 09:57:53,850 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:57:53" (1/1) ... [2024-11-09 09:57:53,897 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:57:53" (1/1) ... [2024-11-09 09:57:53,960 INFO L138 Inliner]: procedures = 344, calls = 498, calls flagged for inlining = 8, calls inlined = 7, statements flattened = 663 [2024-11-09 09:57:53,961 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 09:57:53,962 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 09:57:53,962 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 09:57:53,962 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 09:57:53,972 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:57:53" (1/1) ... [2024-11-09 09:57:53,973 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:57:53" (1/1) ... [2024-11-09 09:57:53,988 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:57:53" (1/1) ... [2024-11-09 09:57:54,029 INFO L175 MemorySlicer]: Split 450 memory accesses to 15 slices as follows [2, 3, 3, 3, 4, 4, 4, 4, 3, 2, 44, 355, 6, 11, 2]. 79 percent of accesses are in the largest equivalence class. The 423 initializations are split as follows [2, 3, 3, 3, 3, 3, 3, 3, 3, 0, 42, 355, 0, 0, 0]. The 9 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 0, 2, 2, 2]. [2024-11-09 09:57:54,032 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:57:53" (1/1) ... [2024-11-09 09:57:54,033 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:57:53" (1/1) ... [2024-11-09 09:57:54,077 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:57:53" (1/1) ... [2024-11-09 09:57:54,081 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:57:53" (1/1) ... [2024-11-09 09:57:54,087 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:57:53" (1/1) ... [2024-11-09 09:57:54,091 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:57:53" (1/1) ... [2024-11-09 09:57:54,101 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 09:57:54,103 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 09:57:54,103 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 09:57:54,103 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 09:57:54,104 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:57:53" (1/1) ... [2024-11-09 09:57:54,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 09:57:54,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 09:57:54,159 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-09 09:57:54,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-09 09:57:54,211 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 09:57:54,211 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 09:57:54,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-09 09:57:54,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-09 09:57:54,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-09 09:57:54,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-09 09:57:54,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-09 09:57:54,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-09 09:57:54,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-09 09:57:54,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-09 09:57:54,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-09 09:57:54,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2024-11-09 09:57:54,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2024-11-09 09:57:54,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2024-11-09 09:57:54,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2024-11-09 09:57:54,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2024-11-09 09:57:54,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2024-11-09 09:57:54,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 09:57:54,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 09:57:54,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 09:57:54,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 09:57:54,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 09:57:54,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-09 09:57:54,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-09 09:57:54,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-09 09:57:54,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-09 09:57:54,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-09 09:57:54,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-11-09 09:57:54,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-11-09 09:57:54,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-11-09 09:57:54,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-11-09 09:57:54,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2024-11-09 09:57:54,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2024-11-09 09:57:54,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 09:57:54,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 09:57:54,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 09:57:54,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 09:57:54,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-09 09:57:54,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-09 09:57:54,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-09 09:57:54,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-09 09:57:54,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-09 09:57:54,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-11-09 09:57:54,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-11-09 09:57:54,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-11-09 09:57:54,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-11-09 09:57:54,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2024-11-09 09:57:54,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2024-11-09 09:57:54,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 09:57:54,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 09:57:54,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-09 09:57:54,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-09 09:57:54,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-09 09:57:54,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-09 09:57:54,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-09 09:57:54,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-09 09:57:54,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-09 09:57:54,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-09 09:57:54,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-09 09:57:54,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2024-11-09 09:57:54,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2024-11-09 09:57:54,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2024-11-09 09:57:54,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2024-11-09 09:57:54,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2024-11-09 09:57:54,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2024-11-09 09:57:54,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 09:57:54,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 09:57:54,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 09:57:54,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 09:57:54,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-09 09:57:54,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-09 09:57:54,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-09 09:57:54,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-09 09:57:54,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-09 09:57:54,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-11-09 09:57:54,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-11-09 09:57:54,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-11-09 09:57:54,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-11-09 09:57:54,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-11-09 09:57:54,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-11-09 09:57:54,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 09:57:54,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 09:57:54,537 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 09:57:54,539 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 09:57:55,176 INFO L? ?]: Removed 168 outVars from TransFormulas that were not future-live. [2024-11-09 09:57:55,177 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 09:57:55,198 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 09:57:55,199 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-09 09:57:55,199 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:57:55 BoogieIcfgContainer [2024-11-09 09:57:55,199 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 09:57:55,202 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 09:57:55,203 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 09:57:55,206 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 09:57:55,206 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:57:52" (1/3) ... [2024-11-09 09:57:55,207 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2043aa60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:57:55, skipping insertion in model container [2024-11-09 09:57:55,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:57:53" (2/3) ... [2024-11-09 09:57:55,208 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2043aa60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:57:55, skipping insertion in model container [2024-11-09 09:57:55,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:57:55" (3/3) ... [2024-11-09 09:57:55,209 INFO L112 eAbstractionObserver]: Analyzing ICFG dirname-1.i [2024-11-09 09:57:55,226 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 09:57:55,226 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 74 error locations. [2024-11-09 09:57:55,278 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 09:57:55,284 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;@47f99e46, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 09:57:55,285 INFO L334 AbstractCegarLoop]: Starting to check reachability of 74 error locations. [2024-11-09 09:57:55,290 INFO L276 IsEmpty]: Start isEmpty. Operand has 182 states, 105 states have (on average 1.9428571428571428) internal successors, (204), 179 states have internal predecessors, (204), 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) [2024-11-09 09:57:55,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-09 09:57:55,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:57:55,297 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-09 09:57:55,299 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:57:55,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:57:55,304 INFO L85 PathProgramCache]: Analyzing trace with hash 37801, now seen corresponding path program 1 times [2024-11-09 09:57:55,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:57:55,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158007117] [2024-11-09 09:57:55,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:57:55,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:57:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:57:55,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:57:55,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:57:55,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158007117] [2024-11-09 09:57:55,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158007117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:57:55,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:57:55,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 09:57:55,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049208575] [2024-11-09 09:57:55,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:57:55,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 09:57:55,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:57:55,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 09:57:55,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 09:57:55,936 INFO L87 Difference]: Start difference. First operand has 182 states, 105 states have (on average 1.9428571428571428) internal successors, (204), 179 states have internal predecessors, (204), 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) 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) [2024-11-09 09:57:56,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:57:56,114 INFO L93 Difference]: Finished difference Result 140 states and 154 transitions. [2024-11-09 09:57:56,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 09:57:56,117 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 [2024-11-09 09:57:56,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:57:56,129 INFO L225 Difference]: With dead ends: 140 [2024-11-09 09:57:56,129 INFO L226 Difference]: Without dead ends: 140 [2024-11-09 09:57:56,131 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 [2024-11-09 09:57:56,135 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 143 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 09:57:56,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 98 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 09:57:56,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-09 09:57:56,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2024-11-09 09:57:56,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 83 states have (on average 1.8313253012048192) internal successors, (152), 137 states have internal predecessors, (152), 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) [2024-11-09 09:57:56,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2024-11-09 09:57:56,194 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 3 [2024-11-09 09:57:56,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:57:56,194 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2024-11-09 09:57:56,195 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) [2024-11-09 09:57:56,196 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2024-11-09 09:57:56,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-09 09:57:56,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:57:56,197 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-09 09:57:56,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 09:57:56,199 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:57:56,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:57:56,199 INFO L85 PathProgramCache]: Analyzing trace with hash 37802, now seen corresponding path program 1 times [2024-11-09 09:57:56,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:57:56,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128398257] [2024-11-09 09:57:56,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:57:56,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:57:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:57:56,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:57:56,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:57:56,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128398257] [2024-11-09 09:57:56,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128398257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:57:56,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:57:56,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 09:57:56,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266475298] [2024-11-09 09:57:56,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:57:56,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 09:57:56,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:57:56,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 09:57:56,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 09:57:56,519 INFO L87 Difference]: Start difference. First operand 140 states and 154 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) [2024-11-09 09:57:56,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:57:56,668 INFO L93 Difference]: Finished difference Result 139 states and 153 transitions. [2024-11-09 09:57:56,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 09:57:56,669 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 [2024-11-09 09:57:56,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:57:56,672 INFO L225 Difference]: With dead ends: 139 [2024-11-09 09:57:56,672 INFO L226 Difference]: Without dead ends: 139 [2024-11-09 09:57:56,673 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 [2024-11-09 09:57:56,674 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 7 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 09:57:56,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 235 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 09:57:56,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-09 09:57:56,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2024-11-09 09:57:56,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 83 states have (on average 1.819277108433735) internal successors, (151), 136 states have internal predecessors, (151), 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) [2024-11-09 09:57:56,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 153 transitions. [2024-11-09 09:57:56,689 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 153 transitions. Word has length 3 [2024-11-09 09:57:56,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:57:56,690 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 153 transitions. [2024-11-09 09:57:56,690 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) [2024-11-09 09:57:56,690 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 153 transitions. [2024-11-09 09:57:56,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 09:57:56,690 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:57:56,693 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 09:57:56,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 09:57:56,693 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:57:56,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:57:56,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1126113961, now seen corresponding path program 1 times [2024-11-09 09:57:56,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:57:56,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364867832] [2024-11-09 09:57:56,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:57:56,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:57:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:57:56,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:57:56,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:57:56,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364867832] [2024-11-09 09:57:56,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364867832] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:57:56,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:57:56,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 09:57:56,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219986200] [2024-11-09 09:57:56,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:57:56,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 09:57:56,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:57:56,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 09:57:56,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 09:57:56,997 INFO L87 Difference]: Start difference. First operand 139 states and 153 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) [2024-11-09 09:57:57,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:57:57,134 INFO L93 Difference]: Finished difference Result 142 states and 156 transitions. [2024-11-09 09:57:57,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 09:57:57,134 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 [2024-11-09 09:57:57,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:57:57,135 INFO L225 Difference]: With dead ends: 142 [2024-11-09 09:57:57,135 INFO L226 Difference]: Without dead ends: 142 [2024-11-09 09:57:57,136 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 [2024-11-09 09:57:57,136 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 8 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 09:57:57,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 233 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 09:57:57,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-09 09:57:57,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2024-11-09 09:57:57,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 85 states have (on average 1.8) internal successors, (153), 138 states have internal predecessors, (153), 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) [2024-11-09 09:57:57,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 155 transitions. [2024-11-09 09:57:57,151 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 155 transitions. Word has length 6 [2024-11-09 09:57:57,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:57:57,151 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 155 transitions. [2024-11-09 09:57:57,151 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) [2024-11-09 09:57:57,152 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 155 transitions. [2024-11-09 09:57:57,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 09:57:57,152 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:57:57,152 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 09:57:57,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 09:57:57,152 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:57:57,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:57:57,153 INFO L85 PathProgramCache]: Analyzing trace with hash 71430167, now seen corresponding path program 1 times [2024-11-09 09:57:57,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:57:57,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117570352] [2024-11-09 09:57:57,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:57:57,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:57:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:57:57,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:57:57,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:57:57,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117570352] [2024-11-09 09:57:57,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117570352] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 09:57:57,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847251759] [2024-11-09 09:57:57,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:57:57,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:57:57,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 09:57:57,497 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 09:57:57,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 09:57:57,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:57:57,771 INFO L255 TraceCheckSpWp]: Trace formula consists of 969 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 09:57:57,775 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 09:57:57,907 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:57:57,907 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 09:57:58,018 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 [2024-11-09 09:57:58,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:57:58,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847251759] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 09:57:58,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 09:57:58,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-11-09 09:57:58,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884216979] [2024-11-09 09:57:58,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 09:57:58,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 09:57:58,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:57:58,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 09:57:58,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2024-11-09 09:57:58,037 INFO L87 Difference]: Start difference. First operand 141 states and 155 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) [2024-11-09 09:57:58,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:57:58,351 INFO L93 Difference]: Finished difference Result 145 states and 159 transitions. [2024-11-09 09:57:58,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 09:57:58,353 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 [2024-11-09 09:57:58,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:57:58,354 INFO L225 Difference]: With dead ends: 145 [2024-11-09 09:57:58,354 INFO L226 Difference]: Without dead ends: 145 [2024-11-09 09:57:58,354 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 [2024-11-09 09:57:58,355 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 159 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 09:57:58,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 587 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 09:57:58,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-09 09:57:58,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2024-11-09 09:57:58,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 90 states have (on average 1.7444444444444445) internal successors, (157), 142 states have internal predecessors, (157), 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) [2024-11-09 09:57:58,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 159 transitions. [2024-11-09 09:57:58,373 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 159 transitions. Word has length 9 [2024-11-09 09:57:58,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:57:58,373 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 159 transitions. [2024-11-09 09:57:58,374 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) [2024-11-09 09:57:58,374 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 159 transitions. [2024-11-09 09:57:58,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 09:57:58,375 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:57:58,375 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 09:57:58,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 09:57:58,578 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 [2024-11-09 09:57:58,579 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:57:58,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:57:58,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1928131846, now seen corresponding path program 1 times [2024-11-09 09:57:58,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:57:58,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448146373] [2024-11-09 09:57:58,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:57:58,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:57:58,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:57:58,906 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-09 09:57:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:57:58,912 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:57:58,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:57:58,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448146373] [2024-11-09 09:57:58,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448146373] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 09:57:58,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023506597] [2024-11-09 09:57:58,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:57:58,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:57:58,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 09:57:58,915 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 09:57:58,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 09:57:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:57:59,186 INFO L255 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 09:57:59,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 09:57:59,216 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:57:59,216 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 09:57:59,289 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:57:59,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023506597] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 09:57:59,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 09:57:59,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-09 09:57:59,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028135896] [2024-11-09 09:57:59,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 09:57:59,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 09:57:59,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:57:59,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 09:57:59,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-09 09:57:59,292 INFO L87 Difference]: Start difference. First operand 145 states and 159 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 09:57:59,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:57:59,342 INFO L93 Difference]: Finished difference Result 160 states and 174 transitions. [2024-11-09 09:57:59,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 09:57:59,343 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2024-11-09 09:57:59,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:57:59,344 INFO L225 Difference]: With dead ends: 160 [2024-11-09 09:57:59,344 INFO L226 Difference]: Without dead ends: 160 [2024-11-09 09:57:59,344 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-09 09:57:59,345 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 4 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 874 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 [2024-11-09 09:57:59,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 874 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 09:57:59,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-09 09:57:59,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2024-11-09 09:57:59,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 105 states have (on average 1.638095238095238) internal successors, (172), 157 states have internal predecessors, (172), 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) [2024-11-09 09:57:59,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 174 transitions. [2024-11-09 09:57:59,352 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 174 transitions. Word has length 22 [2024-11-09 09:57:59,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:57:59,352 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 174 transitions. [2024-11-09 09:57:59,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 09:57:59,353 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 174 transitions. [2024-11-09 09:57:59,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 09:57:59,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:57:59,354 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 09:57:59,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 09:57:59,554 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 [2024-11-09 09:57:59,556 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:57:59,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:57:59,556 INFO L85 PathProgramCache]: Analyzing trace with hash 922180072, now seen corresponding path program 2 times [2024-11-09 09:57:59,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:57:59,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231157156] [2024-11-09 09:57:59,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:57:59,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:57:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:57:59,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-09 09:57:59,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:57:59,948 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:57:59,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:57:59,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231157156] [2024-11-09 09:57:59,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231157156] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 09:57:59,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200148683] [2024-11-09 09:57:59,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 09:57:59,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:57:59,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 09:57:59,951 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 09:57:59,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 09:58:00,228 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 09:58:00,228 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 09:58:00,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 987 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 09:58:00,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 09:58:00,270 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-09 09:58:00,271 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 1 case distinctions, treesize of input 9 treesize of output 11 [2024-11-09 09:58:00,295 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-09 09:58:00,296 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 09:58:00,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200148683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:58:00,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 09:58:00,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 12 [2024-11-09 09:58:00,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909978522] [2024-11-09 09:58:00,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:58:00,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 09:58:00,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:58:00,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 09:58:00,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-09 09:58:00,298 INFO L87 Difference]: Start difference. First operand 160 states and 174 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 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) [2024-11-09 09:58:00,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:58:00,415 INFO L93 Difference]: Finished difference Result 155 states and 169 transitions. [2024-11-09 09:58:00,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 09:58:00,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 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 37 [2024-11-09 09:58:00,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:58:00,416 INFO L225 Difference]: With dead ends: 155 [2024-11-09 09:58:00,417 INFO L226 Difference]: Without dead ends: 155 [2024-11-09 09:58:00,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-09 09:58:00,418 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 126 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 09:58:00,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 103 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 09:58:00,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-11-09 09:58:00,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2024-11-09 09:58:00,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 105 states have (on average 1.5904761904761904) internal successors, (167), 152 states have internal predecessors, (167), 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) [2024-11-09 09:58:00,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 169 transitions. [2024-11-09 09:58:00,432 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 169 transitions. Word has length 37 [2024-11-09 09:58:00,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:58:00,432 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 169 transitions. [2024-11-09 09:58:00,432 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 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) [2024-11-09 09:58:00,433 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 169 transitions. [2024-11-09 09:58:00,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-09 09:58:00,433 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:58:00,433 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 09:58:00,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 09:58:00,634 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 [2024-11-09 09:58:00,634 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:58:00,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:58:00,635 INFO L85 PathProgramCache]: Analyzing trace with hash 922180073, now seen corresponding path program 1 times [2024-11-09 09:58:00,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:58:00,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314322588] [2024-11-09 09:58:00,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:00,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:58:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:00,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-09 09:58:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:00,973 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:58:00,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:58:00,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314322588] [2024-11-09 09:58:00,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314322588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 09:58:00,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124538980] [2024-11-09 09:58:00,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:00,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:58:00,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 09:58:00,976 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 09:58:00,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 09:58:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:01,299 INFO L255 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 09:58:01,301 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 09:58:01,360 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:58:01,362 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 09:58:01,473 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 09:58:01,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124538980] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 09:58:01,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 09:58:01,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2024-11-09 09:58:01,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985694340] [2024-11-09 09:58:01,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 09:58:01,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 09:58:01,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:58:01,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 09:58:01,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-09 09:58:01,477 INFO L87 Difference]: Start difference. First operand 155 states and 169 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 09:58:01,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:58:01,528 INFO L93 Difference]: Finished difference Result 161 states and 175 transitions. [2024-11-09 09:58:01,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 09:58:01,529 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2024-11-09 09:58:01,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:58:01,530 INFO L225 Difference]: With dead ends: 161 [2024-11-09 09:58:01,530 INFO L226 Difference]: Without dead ends: 161 [2024-11-09 09:58:01,530 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 66 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-09 09:58:01,531 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 2 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 704 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 [2024-11-09 09:58:01,531 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 704 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 09:58:01,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-09 09:58:01,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2024-11-09 09:58:01,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 111 states have (on average 1.5585585585585586) internal successors, (173), 158 states have internal predecessors, (173), 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) [2024-11-09 09:58:01,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 175 transitions. [2024-11-09 09:58:01,537 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 175 transitions. Word has length 37 [2024-11-09 09:58:01,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:58:01,537 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 175 transitions. [2024-11-09 09:58:01,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-09 09:58:01,538 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 175 transitions. [2024-11-09 09:58:01,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 09:58:01,539 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:58:01,539 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 09:58:01,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 09:58:01,739 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 [2024-11-09 09:58:01,740 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:58:01,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:58:01,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1261940567, now seen corresponding path program 2 times [2024-11-09 09:58:01,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:58:01,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485471468] [2024-11-09 09:58:01,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:01,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:58:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:02,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 09:58:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:02,472 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-09 09:58:02,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:58:02,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485471468] [2024-11-09 09:58:02,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485471468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:58:02,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:58:02,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 09:58:02,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305623159] [2024-11-09 09:58:02,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:58:02,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 09:58:02,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:58:02,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 09:58:02,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 09:58:02,476 INFO L87 Difference]: Start difference. First operand 161 states and 175 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2024-11-09 09:58:02,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:58:02,678 INFO L93 Difference]: Finished difference Result 251 states and 277 transitions. [2024-11-09 09:58:02,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 09:58:02,678 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 43 [2024-11-09 09:58:02,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:58:02,680 INFO L225 Difference]: With dead ends: 251 [2024-11-09 09:58:02,681 INFO L226 Difference]: Without dead ends: 251 [2024-11-09 09:58:02,681 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 [2024-11-09 09:58:02,682 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 234 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 09:58:02,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 397 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 09:58:02,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-11-09 09:58:02,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 160. [2024-11-09 09:58:02,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 111 states have (on average 1.5495495495495495) internal successors, (172), 157 states have internal predecessors, (172), 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) [2024-11-09 09:58:02,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 174 transitions. [2024-11-09 09:58:02,693 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 174 transitions. Word has length 43 [2024-11-09 09:58:02,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:58:02,693 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 174 transitions. [2024-11-09 09:58:02,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2024-11-09 09:58:02,693 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 174 transitions. [2024-11-09 09:58:02,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-09 09:58:02,694 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:58:02,694 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 09:58:02,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 09:58:02,694 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:58:02,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:58:02,695 INFO L85 PathProgramCache]: Analyzing trace with hash -622712191, now seen corresponding path program 1 times [2024-11-09 09:58:02,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:58:02,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11965347] [2024-11-09 09:58:02,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:02,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:58:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:03,117 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 09:58:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:03,120 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-09 09:58:03,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:58:03,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11965347] [2024-11-09 09:58:03,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11965347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:58:03,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:58:03,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 09:58:03,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053741968] [2024-11-09 09:58:03,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:58:03,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 09:58:03,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:58:03,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 09:58:03,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 09:58:03,128 INFO L87 Difference]: Start difference. First operand 160 states and 174 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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) [2024-11-09 09:58:03,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:58:03,323 INFO L93 Difference]: Finished difference Result 181 states and 198 transitions. [2024-11-09 09:58:03,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 09:58:03,323 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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 46 [2024-11-09 09:58:03,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:58:03,324 INFO L225 Difference]: With dead ends: 181 [2024-11-09 09:58:03,324 INFO L226 Difference]: Without dead ends: 181 [2024-11-09 09:58:03,325 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-09 09:58:03,325 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 315 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 09:58:03,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 185 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 09:58:03,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-09 09:58:03,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 174. [2024-11-09 09:58:03,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 125 states have (on average 1.552) internal successors, (194), 171 states have internal predecessors, (194), 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) [2024-11-09 09:58:03,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 196 transitions. [2024-11-09 09:58:03,331 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 196 transitions. Word has length 46 [2024-11-09 09:58:03,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:58:03,333 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 196 transitions. [2024-11-09 09:58:03,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 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) [2024-11-09 09:58:03,333 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 196 transitions. [2024-11-09 09:58:03,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 09:58:03,335 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:58:03,335 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] [2024-11-09 09:58:03,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 09:58:03,335 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:58:03,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:58:03,335 INFO L85 PathProgramCache]: Analyzing trace with hash -2124209265, now seen corresponding path program 1 times [2024-11-09 09:58:03,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:58:03,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434132620] [2024-11-09 09:58:03,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:03,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:58:03,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:03,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 09:58:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:03,558 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-09 09:58:03,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:58:03,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434132620] [2024-11-09 09:58:03,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434132620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:58:03,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:58:03,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 09:58:03,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111628246] [2024-11-09 09:58:03,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:58:03,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 09:58:03,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:58:03,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 09:58:03,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 09:58:03,560 INFO L87 Difference]: Start difference. First operand 174 states and 196 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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) [2024-11-09 09:58:03,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:58:03,675 INFO L93 Difference]: Finished difference Result 168 states and 190 transitions. [2024-11-09 09:58:03,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 09:58:03,676 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 47 [2024-11-09 09:58:03,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:58:03,677 INFO L225 Difference]: With dead ends: 168 [2024-11-09 09:58:03,677 INFO L226 Difference]: Without dead ends: 168 [2024-11-09 09:58:03,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 09:58:03,678 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 188 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 09:58:03,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 130 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 09:58:03,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-09 09:58:03,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-11-09 09:58:03,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 125 states have (on average 1.504) internal successors, (188), 165 states have internal predecessors, (188), 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) [2024-11-09 09:58:03,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 190 transitions. [2024-11-09 09:58:03,682 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 190 transitions. Word has length 47 [2024-11-09 09:58:03,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:58:03,682 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 190 transitions. [2024-11-09 09:58:03,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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) [2024-11-09 09:58:03,683 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 190 transitions. [2024-11-09 09:58:03,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-09 09:58:03,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:58:03,683 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] [2024-11-09 09:58:03,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 09:58:03,684 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:58:03,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:58:03,684 INFO L85 PathProgramCache]: Analyzing trace with hash -2124209264, now seen corresponding path program 1 times [2024-11-09 09:58:03,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:58:03,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689752669] [2024-11-09 09:58:03,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:03,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:58:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:04,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 09:58:04,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:04,035 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-09 09:58:04,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:58:04,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689752669] [2024-11-09 09:58:04,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689752669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:58:04,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:58:04,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 09:58:04,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286429122] [2024-11-09 09:58:04,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:58:04,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 09:58:04,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:58:04,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 09:58:04,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 09:58:04,037 INFO L87 Difference]: Start difference. First operand 168 states and 190 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2024-11-09 09:58:04,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:58:04,099 INFO L93 Difference]: Finished difference Result 175 states and 191 transitions. [2024-11-09 09:58:04,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 09:58:04,100 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 47 [2024-11-09 09:58:04,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:58:04,102 INFO L225 Difference]: With dead ends: 175 [2024-11-09 09:58:04,102 INFO L226 Difference]: Without dead ends: 175 [2024-11-09 09:58:04,102 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 [2024-11-09 09:58:04,103 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 146 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 09:58:04,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 502 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 09:58:04,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-09 09:58:04,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 168. [2024-11-09 09:58:04,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 125 states have (on average 1.496) internal successors, (187), 165 states have internal predecessors, (187), 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) [2024-11-09 09:58:04,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 189 transitions. [2024-11-09 09:58:04,108 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 189 transitions. Word has length 47 [2024-11-09 09:58:04,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:58:04,109 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 189 transitions. [2024-11-09 09:58:04,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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) [2024-11-09 09:58:04,109 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 189 transitions. [2024-11-09 09:58:04,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 09:58:04,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:58:04,110 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] [2024-11-09 09:58:04,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 09:58:04,110 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:58:04,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:58:04,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1255141546, now seen corresponding path program 1 times [2024-11-09 09:58:04,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:58:04,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065274063] [2024-11-09 09:58:04,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:04,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:58:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:04,389 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 09:58:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:04,392 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-09 09:58:04,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:58:04,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065274063] [2024-11-09 09:58:04,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065274063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:58:04,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:58:04,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 09:58:04,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593609216] [2024-11-09 09:58:04,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:58:04,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 09:58:04,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:58:04,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 09:58:04,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 09:58:04,394 INFO L87 Difference]: Start difference. First operand 168 states and 189 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 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) [2024-11-09 09:58:04,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:58:04,463 INFO L93 Difference]: Finished difference Result 167 states and 187 transitions. [2024-11-09 09:58:04,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 09:58:04,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 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 [2024-11-09 09:58:04,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:58:04,465 INFO L225 Difference]: With dead ends: 167 [2024-11-09 09:58:04,465 INFO L226 Difference]: Without dead ends: 167 [2024-11-09 09:58:04,465 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 [2024-11-09 09:58:04,466 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 117 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 09:58:04,466 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 107 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 09:58:04,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-09 09:58:04,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2024-11-09 09:58:04,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 125 states have (on average 1.48) internal successors, (185), 164 states have internal predecessors, (185), 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) [2024-11-09 09:58:04,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 187 transitions. [2024-11-09 09:58:04,470 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 187 transitions. Word has length 49 [2024-11-09 09:58:04,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:58:04,470 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 187 transitions. [2024-11-09 09:58:04,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 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) [2024-11-09 09:58:04,471 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 187 transitions. [2024-11-09 09:58:04,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-09 09:58:04,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:58:04,471 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] [2024-11-09 09:58:04,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 09:58:04,472 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:58:04,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:58:04,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1255141545, now seen corresponding path program 1 times [2024-11-09 09:58:04,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:58:04,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60018392] [2024-11-09 09:58:04,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:04,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:58:04,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:05,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 09:58:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:05,149 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-09 09:58:05,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:58:05,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60018392] [2024-11-09 09:58:05,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60018392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:58:05,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:58:05,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 09:58:05,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867689479] [2024-11-09 09:58:05,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:58:05,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 09:58:05,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:58:05,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 09:58:05,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 09:58:05,151 INFO L87 Difference]: Start difference. First operand 167 states and 187 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 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) [2024-11-09 09:58:05,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:58:05,435 INFO L93 Difference]: Finished difference Result 173 states and 188 transitions. [2024-11-09 09:58:05,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 09:58:05,436 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 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 [2024-11-09 09:58:05,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:58:05,437 INFO L225 Difference]: With dead ends: 173 [2024-11-09 09:58:05,437 INFO L226 Difference]: Without dead ends: 173 [2024-11-09 09:58:05,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-09 09:58:05,438 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 289 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 09:58:05,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 254 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 09:58:05,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-09 09:58:05,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2024-11-09 09:58:05,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 125 states have (on average 1.472) internal successors, (184), 164 states have internal predecessors, (184), 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) [2024-11-09 09:58:05,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 186 transitions. [2024-11-09 09:58:05,443 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 186 transitions. Word has length 49 [2024-11-09 09:58:05,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:58:05,443 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 186 transitions. [2024-11-09 09:58:05,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 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) [2024-11-09 09:58:05,443 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 186 transitions. [2024-11-09 09:58:05,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-09 09:58:05,444 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:58:05,444 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] [2024-11-09 09:58:05,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 09:58:05,445 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:58:05,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:58:05,445 INFO L85 PathProgramCache]: Analyzing trace with hash 63507943, now seen corresponding path program 1 times [2024-11-09 09:58:05,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:58:05,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094407636] [2024-11-09 09:58:05,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:05,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:58:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:05,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 09:58:05,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:05,778 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-09 09:58:05,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:58:05,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094407636] [2024-11-09 09:58:05,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094407636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:58:05,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:58:05,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 09:58:05,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553458663] [2024-11-09 09:58:05,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:58:05,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 09:58:05,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:58:05,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 09:58:05,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 09:58:05,780 INFO L87 Difference]: Start difference. First operand 167 states and 186 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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) [2024-11-09 09:58:05,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:58:05,915 INFO L93 Difference]: Finished difference Result 166 states and 184 transitions. [2024-11-09 09:58:05,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 09:58:05,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 52 [2024-11-09 09:58:05,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:58:05,916 INFO L225 Difference]: With dead ends: 166 [2024-11-09 09:58:05,916 INFO L226 Difference]: Without dead ends: 166 [2024-11-09 09:58:05,917 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 [2024-11-09 09:58:05,917 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 14 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 09:58:05,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 369 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 09:58:05,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-09 09:58:05,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2024-11-09 09:58:05,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 125 states have (on average 1.456) internal successors, (182), 163 states have internal predecessors, (182), 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) [2024-11-09 09:58:05,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 184 transitions. [2024-11-09 09:58:05,922 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 184 transitions. Word has length 52 [2024-11-09 09:58:05,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:58:05,922 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 184 transitions. [2024-11-09 09:58:05,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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) [2024-11-09 09:58:05,922 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 184 transitions. [2024-11-09 09:58:05,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-09 09:58:05,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:58:05,925 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] [2024-11-09 09:58:05,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 09:58:05,925 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:58:05,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:58:05,926 INFO L85 PathProgramCache]: Analyzing trace with hash 63507944, now seen corresponding path program 1 times [2024-11-09 09:58:05,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:58:05,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732852372] [2024-11-09 09:58:05,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:05,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:58:05,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:06,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 09:58:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:06,489 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-09 09:58:06,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:58:06,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732852372] [2024-11-09 09:58:06,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732852372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:58:06,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:58:06,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 09:58:06,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874036224] [2024-11-09 09:58:06,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:58:06,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 09:58:06,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:58:06,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 09:58:06,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 09:58:06,492 INFO L87 Difference]: Start difference. First operand 166 states and 184 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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) [2024-11-09 09:58:06,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:58:06,654 INFO L93 Difference]: Finished difference Result 165 states and 182 transitions. [2024-11-09 09:58:06,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 09:58:06,655 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 52 [2024-11-09 09:58:06,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:58:06,656 INFO L225 Difference]: With dead ends: 165 [2024-11-09 09:58:06,656 INFO L226 Difference]: Without dead ends: 165 [2024-11-09 09:58:06,656 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 [2024-11-09 09:58:06,657 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 13 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 09:58:06,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 349 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 09:58:06,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-09 09:58:06,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2024-11-09 09:58:06,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 125 states have (on average 1.44) internal successors, (180), 162 states have internal predecessors, (180), 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) [2024-11-09 09:58:06,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 182 transitions. [2024-11-09 09:58:06,662 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 182 transitions. Word has length 52 [2024-11-09 09:58:06,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:58:06,662 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 182 transitions. [2024-11-09 09:58:06,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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) [2024-11-09 09:58:06,663 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 182 transitions. [2024-11-09 09:58:06,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 09:58:06,663 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:58:06,663 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] [2024-11-09 09:58:06,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 09:58:06,664 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:58:06,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:58:06,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1393895268, now seen corresponding path program 1 times [2024-11-09 09:58:06,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:58:06,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751985923] [2024-11-09 09:58:06,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:06,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:58:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:06,889 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 09:58:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:06,893 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-09 09:58:06,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:58:06,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751985923] [2024-11-09 09:58:06,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751985923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:58:06,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:58:06,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 09:58:06,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109329598] [2024-11-09 09:58:06,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:58:06,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 09:58:06,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:58:06,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 09:58:06,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 09:58:06,896 INFO L87 Difference]: Start difference. First operand 165 states and 182 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 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) [2024-11-09 09:58:07,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:58:07,026 INFO L93 Difference]: Finished difference Result 164 states and 180 transitions. [2024-11-09 09:58:07,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 09:58:07,027 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 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 57 [2024-11-09 09:58:07,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:58:07,028 INFO L225 Difference]: With dead ends: 164 [2024-11-09 09:58:07,028 INFO L226 Difference]: Without dead ends: 164 [2024-11-09 09:58:07,028 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 [2024-11-09 09:58:07,029 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 7 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 09:58:07,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 402 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 09:58:07,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-09 09:58:07,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2024-11-09 09:58:07,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 125 states have (on average 1.424) internal successors, (178), 161 states have internal predecessors, (178), 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) [2024-11-09 09:58:07,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 180 transitions. [2024-11-09 09:58:07,036 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 180 transitions. Word has length 57 [2024-11-09 09:58:07,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:58:07,036 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 180 transitions. [2024-11-09 09:58:07,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 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) [2024-11-09 09:58:07,037 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 180 transitions. [2024-11-09 09:58:07,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 09:58:07,038 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:58:07,038 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] [2024-11-09 09:58:07,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 09:58:07,039 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:58:07,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:58:07,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1393895267, now seen corresponding path program 1 times [2024-11-09 09:58:07,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:58:07,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289879932] [2024-11-09 09:58:07,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:07,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:58:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:07,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 09:58:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:07,738 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-09 09:58:07,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:58:07,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289879932] [2024-11-09 09:58:07,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289879932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:58:07,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:58:07,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 09:58:07,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689825716] [2024-11-09 09:58:07,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:58:07,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 09:58:07,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:58:07,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 09:58:07,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 09:58:07,741 INFO L87 Difference]: Start difference. First operand 164 states and 180 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 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) [2024-11-09 09:58:07,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:58:07,990 INFO L93 Difference]: Finished difference Result 174 states and 191 transitions. [2024-11-09 09:58:07,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 09:58:07,990 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 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 57 [2024-11-09 09:58:07,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:58:07,992 INFO L225 Difference]: With dead ends: 174 [2024-11-09 09:58:07,992 INFO L226 Difference]: Without dead ends: 174 [2024-11-09 09:58:07,992 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-09 09:58:07,992 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 13 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 09:58:07,993 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 482 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 09:58:07,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-09 09:58:07,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 172. [2024-11-09 09:58:07,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 133 states have (on average 1.406015037593985) internal successors, (187), 169 states have internal predecessors, (187), 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) [2024-11-09 09:58:07,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 189 transitions. [2024-11-09 09:58:07,997 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 189 transitions. Word has length 57 [2024-11-09 09:58:07,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:58:07,997 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 189 transitions. [2024-11-09 09:58:07,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 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) [2024-11-09 09:58:07,997 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 189 transitions. [2024-11-09 09:58:07,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-09 09:58:07,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:58:07,999 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] [2024-11-09 09:58:07,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 09:58:07,999 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:58:07,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:58:07,999 INFO L85 PathProgramCache]: Analyzing trace with hash 2032404121, now seen corresponding path program 1 times [2024-11-09 09:58:08,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:58:08,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034478852] [2024-11-09 09:58:08,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:08,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:58:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:08,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 09:58:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:08,737 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-09 09:58:08,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:58:08,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034478852] [2024-11-09 09:58:08,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034478852] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 09:58:08,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514851135] [2024-11-09 09:58:08,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:08,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:58:08,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 09:58:08,741 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 09:58:08,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 09:58:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:09,116 INFO L255 TraceCheckSpWp]: Trace formula consists of 1336 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 09:58:09,120 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 09:58:09,135 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 [2024-11-09 09:58:09,158 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 [2024-11-09 09:58:09,162 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 [2024-11-09 09:58:09,365 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 [2024-11-09 09:58:09,372 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 [2024-11-09 09:58:09,401 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-09 09:58:09,401 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 09:58:09,659 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-09 09:58:09,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514851135] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 09:58:09,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 09:58:09,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 21 [2024-11-09 09:58:09,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045953970] [2024-11-09 09:58:09,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 09:58:09,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 09:58:09,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:58:09,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 09:58:09,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2024-11-09 09:58:09,662 INFO L87 Difference]: Start difference. First operand 172 states and 189 transitions. Second operand has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 22 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) [2024-11-09 09:58:10,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:58:10,377 INFO L93 Difference]: Finished difference Result 185 states and 202 transitions. [2024-11-09 09:58:10,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 09:58:10,378 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 22 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 62 [2024-11-09 09:58:10,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:58:10,379 INFO L225 Difference]: With dead ends: 185 [2024-11-09 09:58:10,379 INFO L226 Difference]: Without dead ends: 185 [2024-11-09 09:58:10,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=166, Invalid=590, Unknown=0, NotChecked=0, Total=756 [2024-11-09 09:58:10,380 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 28 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 09:58:10,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 1136 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 09:58:10,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-09 09:58:10,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2024-11-09 09:58:10,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 147 states have (on average 1.3605442176870748) internal successors, (200), 182 states have internal predecessors, (200), 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) [2024-11-09 09:58:10,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 202 transitions. [2024-11-09 09:58:10,386 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 202 transitions. Word has length 62 [2024-11-09 09:58:10,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:58:10,386 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 202 transitions. [2024-11-09 09:58:10,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 22 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) [2024-11-09 09:58:10,386 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 202 transitions. [2024-11-09 09:58:10,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-09 09:58:10,389 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:58:10,389 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] [2024-11-09 09:58:10,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 09:58:10,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 09:58:10,590 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:58:10,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:58:10,590 INFO L85 PathProgramCache]: Analyzing trace with hash -2031913739, now seen corresponding path program 1 times [2024-11-09 09:58:10,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:58:10,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708328374] [2024-11-09 09:58:10,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:10,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:58:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:10,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 09:58:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:10,808 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-09 09:58:10,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:58:10,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708328374] [2024-11-09 09:58:10,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708328374] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 09:58:10,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221470436] [2024-11-09 09:58:10,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:10,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:58:10,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 09:58:10,811 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 09:58:10,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 09:58:11,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:11,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 1400 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 09:58:11,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 09:58:11,205 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-09 09:58:11,205 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 09:58:11,259 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-09 09:58:11,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221470436] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 09:58:11,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 09:58:11,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-09 09:58:11,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278462290] [2024-11-09 09:58:11,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 09:58:11,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 09:58:11,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:58:11,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 09:58:11,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-09 09:58:11,261 INFO L87 Difference]: Start difference. First operand 185 states and 202 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 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) [2024-11-09 09:58:11,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:58:11,298 INFO L93 Difference]: Finished difference Result 242 states and 257 transitions. [2024-11-09 09:58:11,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 09:58:11,299 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 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 73 [2024-11-09 09:58:11,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:58:11,300 INFO L225 Difference]: With dead ends: 242 [2024-11-09 09:58:11,300 INFO L226 Difference]: Without dead ends: 242 [2024-11-09 09:58:11,300 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-09 09:58:11,301 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 25 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 09:58:11,301 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 403 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 09:58:11,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-09 09:58:11,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 235. [2024-11-09 09:58:11,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 197 states have (on average 1.2944162436548223) internal successors, (255), 232 states have internal predecessors, (255), 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) [2024-11-09 09:58:11,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 257 transitions. [2024-11-09 09:58:11,306 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 257 transitions. Word has length 73 [2024-11-09 09:58:11,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:58:11,306 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 257 transitions. [2024-11-09 09:58:11,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 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) [2024-11-09 09:58:11,307 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 257 transitions. [2024-11-09 09:58:11,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-09 09:58:11,307 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:58:11,308 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] [2024-11-09 09:58:11,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 09:58:11,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:58:11,509 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:58:11,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:58:11,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1704710159, now seen corresponding path program 2 times [2024-11-09 09:58:11,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:58:11,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891406166] [2024-11-09 09:58:11,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:11,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:58:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:11,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 09:58:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:11,908 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 2 proven. 148 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-09 09:58:11,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:58:11,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891406166] [2024-11-09 09:58:11,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891406166] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 09:58:11,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254722646] [2024-11-09 09:58:11,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 09:58:11,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:58:11,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 09:58:11,911 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 09:58:11,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 09:58:12,337 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 09:58:12,338 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 09:58:12,342 INFO L255 TraceCheckSpWp]: Trace formula consists of 1545 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 09:58:12,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 09:58:12,411 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 2 proven. 148 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-09 09:58:12,411 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 09:58:12,510 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 2 proven. 148 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-09 09:58:12,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254722646] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 09:58:12,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 09:58:12,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2024-11-09 09:58:12,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357830022] [2024-11-09 09:58:12,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 09:58:12,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 09:58:12,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:58:12,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 09:58:12,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-09 09:58:12,512 INFO L87 Difference]: Start difference. First operand 235 states and 257 transitions. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 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) [2024-11-09 09:58:12,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:58:12,565 INFO L93 Difference]: Finished difference Result 264 states and 279 transitions. [2024-11-09 09:58:12,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 09:58:12,565 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 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 98 [2024-11-09 09:58:12,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:58:12,566 INFO L225 Difference]: With dead ends: 264 [2024-11-09 09:58:12,567 INFO L226 Difference]: Without dead ends: 264 [2024-11-09 09:58:12,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 188 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-09 09:58:12,568 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 26 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 537 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 [2024-11-09 09:58:12,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 537 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 09:58:12,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-09 09:58:12,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 255. [2024-11-09 09:58:12,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 217 states have (on average 1.2764976958525345) internal successors, (277), 252 states have internal predecessors, (277), 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) [2024-11-09 09:58:12,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 279 transitions. [2024-11-09 09:58:12,574 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 279 transitions. Word has length 98 [2024-11-09 09:58:12,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:58:12,574 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 279 transitions. [2024-11-09 09:58:12,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 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) [2024-11-09 09:58:12,574 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 279 transitions. [2024-11-09 09:58:12,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-09 09:58:12,575 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:58:12,576 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] [2024-11-09 09:58:12,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 09:58:12,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:58:12,777 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:58:12,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:58:12,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1582169487, now seen corresponding path program 3 times [2024-11-09 09:58:12,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:58:12,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741059429] [2024-11-09 09:58:12,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:12,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:58:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:13,443 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 09:58:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:13,446 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-09 09:58:13,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:58:13,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741059429] [2024-11-09 09:58:13,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741059429] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 09:58:13,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317554822] [2024-11-09 09:58:13,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 09:58:13,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:58:13,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 09:58:13,449 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 09:58:13,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 09:58:13,837 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 09:58:13,837 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 09:58:13,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 09:58:13,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 09:58:13,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 09:58:13,898 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 [2024-11-09 09:58:13,904 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 09:58:13,905 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 [2024-11-09 09:58:14,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 09:58:14,423 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 [2024-11-09 09:58:14,433 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 09:58:14,434 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 [2024-11-09 09:58:14,449 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-09 09:58:14,449 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 09:58:15,680 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 09:58:15,681 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 [2024-11-09 09:58:15,843 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 [2024-11-09 09:58:15,874 INFO L349 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2024-11-09 09:58:15,875 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 [2024-11-09 09:58:15,915 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-09 09:58:15,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317554822] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 09:58:15,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 09:58:15,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-11-09 09:58:15,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451705120] [2024-11-09 09:58:15,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 09:58:15,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 09:58:15,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:58:15,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 09:58:15,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2024-11-09 09:58:15,919 INFO L87 Difference]: Start difference. First operand 255 states and 279 transitions. Second operand has 20 states, 19 states have (on average 4.105263157894737) internal successors, (78), 20 states have internal predecessors, (78), 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) [2024-11-09 09:58:16,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:58:16,264 INFO L93 Difference]: Finished difference Result 254 states and 270 transitions. [2024-11-09 09:58:16,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 09:58:16,264 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.105263157894737) internal successors, (78), 20 states have internal predecessors, (78), 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 108 [2024-11-09 09:58:16,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:58:16,265 INFO L225 Difference]: With dead ends: 254 [2024-11-09 09:58:16,266 INFO L226 Difference]: Without dead ends: 254 [2024-11-09 09:58:16,266 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2024-11-09 09:58:16,267 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 657 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 09:58:16,267 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 401 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 09:58:16,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-09 09:58:16,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 196. [2024-11-09 09:58:16,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 162 states have (on average 1.2839506172839505) internal successors, (208), 193 states have internal predecessors, (208), 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) [2024-11-09 09:58:16,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 210 transitions. [2024-11-09 09:58:16,271 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 210 transitions. Word has length 108 [2024-11-09 09:58:16,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:58:16,272 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 210 transitions. [2024-11-09 09:58:16,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.105263157894737) internal successors, (78), 20 states have internal predecessors, (78), 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) [2024-11-09 09:58:16,272 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 210 transitions. [2024-11-09 09:58:16,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-09 09:58:16,273 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:58:16,273 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] [2024-11-09 09:58:16,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-09 09:58:16,473 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,SelfDestructingSolverStorable20 [2024-11-09 09:58:16,474 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:58:16,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:58:16,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1802614368, now seen corresponding path program 1 times [2024-11-09 09:58:16,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:58:16,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887921025] [2024-11-09 09:58:16,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:16,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:58:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:17,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 09:58:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:17,202 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-09 09:58:17,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:58:17,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887921025] [2024-11-09 09:58:17,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887921025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 09:58:17,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085818285] [2024-11-09 09:58:17,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:17,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:58:17,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 09:58:17,205 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 09:58:17,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 09:58:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:17,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 1611 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-09 09:58:17,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 09:58:17,749 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 09:58:17,750 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 [2024-11-09 09:58:17,755 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 [2024-11-09 09:58:17,780 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 23 treesize of output 1 [2024-11-09 09:58:17,875 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 12 treesize of output 4 [2024-11-09 09:58:18,080 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2024-11-09 09:58:18,081 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 09:58:18,518 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 [2024-11-09 09:58:18,538 INFO L349 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2024-11-09 09:58:18,538 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 [2024-11-09 09:58:18,579 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-09 09:58:18,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085818285] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 09:58:18,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 09:58:18,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 19 [2024-11-09 09:58:18,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900838557] [2024-11-09 09:58:18,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 09:58:18,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 09:58:18,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:58:18,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 09:58:18,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2024-11-09 09:58:18,581 INFO L87 Difference]: Start difference. First operand 196 states and 210 transitions. Second operand has 20 states, 19 states have (on average 4.368421052631579) internal successors, (83), 20 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) [2024-11-09 09:58:19,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:58:19,035 INFO L93 Difference]: Finished difference Result 258 states and 276 transitions. [2024-11-09 09:58:19,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 09:58:19,036 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.368421052631579) internal successors, (83), 20 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 109 [2024-11-09 09:58:19,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:58:19,037 INFO L225 Difference]: With dead ends: 258 [2024-11-09 09:58:19,037 INFO L226 Difference]: Without dead ends: 258 [2024-11-09 09:58:19,038 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=214, Invalid=542, Unknown=0, NotChecked=0, Total=756 [2024-11-09 09:58:19,039 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 636 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 09:58:19,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 437 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 09:58:19,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-09 09:58:19,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 195. [2024-11-09 09:58:19,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 165 states have (on average 1.2545454545454546) internal successors, (207), 192 states have internal predecessors, (207), 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) [2024-11-09 09:58:19,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 209 transitions. [2024-11-09 09:58:19,043 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 209 transitions. Word has length 109 [2024-11-09 09:58:19,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:58:19,044 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 209 transitions. [2024-11-09 09:58:19,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.368421052631579) internal successors, (83), 20 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) [2024-11-09 09:58:19,044 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 209 transitions. [2024-11-09 09:58:19,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-09 09:58:19,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:58:19,045 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] [2024-11-09 09:58:19,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-09 09:58:19,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:58:19,249 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:58:19,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:58:19,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1440091801, now seen corresponding path program 1 times [2024-11-09 09:58:19,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:58:19,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297411684] [2024-11-09 09:58:19,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:19,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:58:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:20,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 09:58:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:20,515 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-09 09:58:20,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:58:20,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297411684] [2024-11-09 09:58:20,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297411684] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 09:58:20,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97901425] [2024-11-09 09:58:20,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:20,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:58:20,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 09:58:20,519 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 09:58:20,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 09:58:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:20,964 INFO L255 TraceCheckSpWp]: Trace formula consists of 1628 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-09 09:58:20,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 09:58:20,996 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-09 09:58:20,996 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 [2024-11-09 09:58:21,015 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 [2024-11-09 09:58:21,200 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-09 09:58:21,200 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 [2024-11-09 09:58:21,209 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 41 treesize of output 37 [2024-11-09 09:58:21,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 [2024-11-09 09:58:21,618 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 17 treesize of output 9 [2024-11-09 09:58:22,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 09:58:22,695 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-09 09:58:22,696 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 [2024-11-09 09:58:22,714 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 09:58:22,715 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 [2024-11-09 09:58:22,803 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2024-11-09 09:58:22,804 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 09:58:23,804 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 09:58:23,804 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 [2024-11-09 09:58:24,031 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-09 09:58:24,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97901425] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 09:58:24,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 09:58:24,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 7] total 25 [2024-11-09 09:58:24,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553159399] [2024-11-09 09:58:24,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 09:58:24,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-09 09:58:24,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:58:24,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-09 09:58:24,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2024-11-09 09:58:24,033 INFO L87 Difference]: Start difference. First operand 195 states and 209 transitions. Second operand has 26 states, 25 states have (on average 3.56) internal successors, (89), 26 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) [2024-11-09 09:58:24,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:58:24,946 INFO L93 Difference]: Finished difference Result 313 states and 330 transitions. [2024-11-09 09:58:24,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 09:58:24,947 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.56) internal successors, (89), 26 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 111 [2024-11-09 09:58:24,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:58:24,949 INFO L225 Difference]: With dead ends: 313 [2024-11-09 09:58:24,949 INFO L226 Difference]: Without dead ends: 313 [2024-11-09 09:58:24,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 207 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=262, Invalid=928, Unknown=0, NotChecked=0, Total=1190 [2024-11-09 09:58:24,950 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 622 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 09:58:24,953 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 655 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 09:58:24,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-11-09 09:58:24,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 190. [2024-11-09 09:58:24,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 161 states have (on average 1.2546583850931676) internal successors, (202), 187 states have internal predecessors, (202), 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) [2024-11-09 09:58:24,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 204 transitions. [2024-11-09 09:58:24,960 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 204 transitions. Word has length 111 [2024-11-09 09:58:24,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:58:24,961 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 204 transitions. [2024-11-09 09:58:24,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.56) internal successors, (89), 26 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) [2024-11-09 09:58:24,962 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 204 transitions. [2024-11-09 09:58:24,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-09 09:58:24,975 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:58:24,975 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] [2024-11-09 09:58:24,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 09:58:25,176 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,SelfDestructingSolverStorable22 [2024-11-09 09:58:25,176 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:58:25,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:58:25,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1084474507, now seen corresponding path program 1 times [2024-11-09 09:58:25,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:58:25,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603074925] [2024-11-09 09:58:25,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:25,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:58:25,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:25,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 09:58:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:25,513 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-09 09:58:25,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:58:25,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603074925] [2024-11-09 09:58:25,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603074925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:58:25,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:58:25,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 09:58:25,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889196282] [2024-11-09 09:58:25,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:58:25,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 09:58:25,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:58:25,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 09:58:25,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 09:58:25,515 INFO L87 Difference]: Start difference. First operand 190 states and 204 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 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) [2024-11-09 09:58:25,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:58:25,568 INFO L93 Difference]: Finished difference Result 196 states and 211 transitions. [2024-11-09 09:58:25,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 09:58:25,569 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 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 [2024-11-09 09:58:25,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:58:25,570 INFO L225 Difference]: With dead ends: 196 [2024-11-09 09:58:25,570 INFO L226 Difference]: Without dead ends: 196 [2024-11-09 09:58:25,570 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 09:58:25,571 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 5 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 09:58:25,572 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 454 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 09:58:25,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-09 09:58:25,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 193. [2024-11-09 09:58:25,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 164 states have (on average 1.25) internal successors, (205), 190 states have internal predecessors, (205), 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) [2024-11-09 09:58:25,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 207 transitions. [2024-11-09 09:58:25,576 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 207 transitions. Word has length 114 [2024-11-09 09:58:25,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:58:25,577 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 207 transitions. [2024-11-09 09:58:25,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 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) [2024-11-09 09:58:25,577 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 207 transitions. [2024-11-09 09:58:25,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-09 09:58:25,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:58:25,578 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] [2024-11-09 09:58:25,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-09 09:58:25,578 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:58:25,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:58:25,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1755409201, now seen corresponding path program 1 times [2024-11-09 09:58:25,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:58:25,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999659818] [2024-11-09 09:58:25,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:25,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:58:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:27,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 09:58:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:27,222 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-09 09:58:27,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:58:27,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999659818] [2024-11-09 09:58:27,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999659818] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 09:58:27,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038983233] [2024-11-09 09:58:27,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:27,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:58:27,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 09:58:27,225 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 09:58:27,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 09:58:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:27,683 INFO L255 TraceCheckSpWp]: Trace formula consists of 1633 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-09 09:58:27,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 09:58:27,691 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 [2024-11-09 09:58:27,695 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 [2024-11-09 09:58:27,759 INFO L349 Elim1Store]: treesize reduction 25, result has 30.6 percent of original size [2024-11-09 09:58:27,760 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 [2024-11-09 09:58:27,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 09:58:27,767 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 [2024-11-09 09:58:28,297 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 9 treesize of output 3 [2024-11-09 09:58:28,310 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-09 09:58:28,311 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 09:58:28,735 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-09 09:58:28,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038983233] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 09:58:28,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 09:58:28,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 23 [2024-11-09 09:58:28,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940702635] [2024-11-09 09:58:28,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 09:58:28,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 09:58:28,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:58:28,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 09:58:28,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2024-11-09 09:58:28,737 INFO L87 Difference]: Start difference. First operand 193 states and 207 transitions. Second operand has 23 states, 23 states have (on average 3.782608695652174) internal successors, (87), 23 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) [2024-11-09 09:58:29,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:58:29,010 INFO L93 Difference]: Finished difference Result 280 states and 297 transitions. [2024-11-09 09:58:29,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 09:58:29,011 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.782608695652174) internal successors, (87), 23 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 115 [2024-11-09 09:58:29,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:58:29,012 INFO L225 Difference]: With dead ends: 280 [2024-11-09 09:58:29,012 INFO L226 Difference]: Without dead ends: 280 [2024-11-09 09:58:29,013 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=187, Invalid=683, Unknown=0, NotChecked=0, Total=870 [2024-11-09 09:58:29,013 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 153 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 09:58:29,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 1634 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 09:58:29,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-09 09:58:29,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 258. [2024-11-09 09:58:29,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 229 states have (on average 1.1877729257641922) internal successors, (272), 255 states have internal predecessors, (272), 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) [2024-11-09 09:58:29,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 274 transitions. [2024-11-09 09:58:29,018 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 274 transitions. Word has length 115 [2024-11-09 09:58:29,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:58:29,019 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 274 transitions. [2024-11-09 09:58:29,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.782608695652174) internal successors, (87), 23 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) [2024-11-09 09:58:29,019 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 274 transitions. [2024-11-09 09:58:29,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-09 09:58:29,020 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:58:29,020 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] [2024-11-09 09:58:29,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 09:58:29,220 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,SelfDestructingSolverStorable24 [2024-11-09 09:58:29,221 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:58:29,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:58:29,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1569983125, now seen corresponding path program 1 times [2024-11-09 09:58:29,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:58:29,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015308873] [2024-11-09 09:58:29,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:29,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:58:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:29,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 09:58:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:29,430 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-09 09:58:29,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:58:29,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015308873] [2024-11-09 09:58:29,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015308873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:58:29,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:58:29,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 09:58:29,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554761365] [2024-11-09 09:58:29,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:58:29,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 09:58:29,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:58:29,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 09:58:29,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 09:58:29,433 INFO L87 Difference]: Start difference. First operand 258 states and 274 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-11-09 09:58:29,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:58:29,443 INFO L93 Difference]: Finished difference Result 259 states and 275 transitions. [2024-11-09 09:58:29,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 09:58:29,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 [2024-11-09 09:58:29,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:58:29,445 INFO L225 Difference]: With dead ends: 259 [2024-11-09 09:58:29,445 INFO L226 Difference]: Without dead ends: 259 [2024-11-09 09:58:29,445 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 [2024-11-09 09:58:29,446 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 0 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 09:58:29,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 244 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 09:58:29,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-11-09 09:58:29,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2024-11-09 09:58:29,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 230 states have (on average 1.1869565217391305) internal successors, (273), 256 states have internal predecessors, (273), 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) [2024-11-09 09:58:29,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 275 transitions. [2024-11-09 09:58:29,452 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 275 transitions. Word has length 119 [2024-11-09 09:58:29,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:58:29,453 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 275 transitions. [2024-11-09 09:58:29,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2024-11-09 09:58:29,453 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 275 transitions. [2024-11-09 09:58:29,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-09 09:58:29,454 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:58:29,454 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] [2024-11-09 09:58:29,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-09 09:58:29,454 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:58:29,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:58:29,455 INFO L85 PathProgramCache]: Analyzing trace with hash -797238300, now seen corresponding path program 1 times [2024-11-09 09:58:29,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:58:29,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669517814] [2024-11-09 09:58:29,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:29,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:58:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:30,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 09:58:30,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:30,487 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 75 proven. 3 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2024-11-09 09:58:30,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:58:30,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669517814] [2024-11-09 09:58:30,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669517814] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 09:58:30,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557227361] [2024-11-09 09:58:30,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:30,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:58:30,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 09:58:30,490 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 09:58:30,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 09:58:30,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:30,953 INFO L255 TraceCheckSpWp]: Trace formula consists of 1669 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 09:58:30,957 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 09:58:30,973 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-09 09:58:30,973 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 [2024-11-09 09:58:31,080 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-09 09:58:31,080 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 14 treesize of output 13 [2024-11-09 09:58:31,099 INFO L349 Elim1Store]: treesize reduction 28, result has 30.0 percent of original size [2024-11-09 09:58:31,100 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 1 case distinctions, treesize of input 19 treesize of output 16 [2024-11-09 09:58:31,134 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-09 09:58:31,135 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 21 treesize of output 20 [2024-11-09 09:58:31,164 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 [2024-11-09 09:58:31,309 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 44 treesize of output 28 [2024-11-09 09:58:32,258 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-11-09 09:58:32,258 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 09:58:32,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557227361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:58:32,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 09:58:32,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-11-09 09:58:32,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841661365] [2024-11-09 09:58:32,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:58:32,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 09:58:32,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:58:32,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 09:58:32,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2024-11-09 09:58:32,259 INFO L87 Difference]: Start difference. First operand 259 states and 275 transitions. Second operand has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 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) [2024-11-09 09:58:32,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:58:32,300 INFO L93 Difference]: Finished difference Result 257 states and 273 transitions. [2024-11-09 09:58:32,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 09:58:32,301 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 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 [2024-11-09 09:58:32,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:58:32,301 INFO L225 Difference]: With dead ends: 257 [2024-11-09 09:58:32,301 INFO L226 Difference]: Without dead ends: 257 [2024-11-09 09:58:32,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2024-11-09 09:58:32,302 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 97 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 09:58:32,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 80 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 09:58:32,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-11-09 09:58:32,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2024-11-09 09:58:32,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 230 states have (on average 1.1782608695652175) internal successors, (271), 254 states have internal predecessors, (271), 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) [2024-11-09 09:58:32,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 273 transitions. [2024-11-09 09:58:32,306 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 273 transitions. Word has length 120 [2024-11-09 09:58:32,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:58:32,307 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 273 transitions. [2024-11-09 09:58:32,307 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 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) [2024-11-09 09:58:32,307 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 273 transitions. [2024-11-09 09:58:32,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-09 09:58:32,308 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:58:32,308 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] [2024-11-09 09:58:32,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-09 09:58:32,509 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,SelfDestructingSolverStorable26 [2024-11-09 09:58:32,509 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:58:32,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:58:32,509 INFO L85 PathProgramCache]: Analyzing trace with hash -797238299, now seen corresponding path program 1 times [2024-11-09 09:58:32,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:58:32,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690266999] [2024-11-09 09:58:32,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:32,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:58:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:34,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 09:58:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:34,630 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-09 09:58:34,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:58:34,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690266999] [2024-11-09 09:58:34,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690266999] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 09:58:34,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814263228] [2024-11-09 09:58:34,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:34,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:58:34,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 09:58:34,633 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 09:58:34,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 09:58:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:35,098 INFO L255 TraceCheckSpWp]: Trace formula consists of 1669 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-09 09:58:35,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 09:58:35,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 09:58:35,140 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 [2024-11-09 09:58:35,156 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-09 09:58:35,156 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 [2024-11-09 09:58:35,419 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 09:58:35,419 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 [2024-11-09 09:58:35,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 09:58:35,425 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 [2024-11-09 09:58:35,439 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-09 09:58:35,439 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 1 case distinctions, treesize of input 19 treesize of output 13 [2024-11-09 09:58:35,539 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-09 09:58:35,539 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 18 treesize of output 17 [2024-11-09 09:58:35,600 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 [2024-11-09 09:58:35,827 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 9 treesize of output 5 [2024-11-09 09:58:36,584 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2024-11-09 09:58:36,584 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 09:58:37,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814263228] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 09:58:37,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 09:58:37,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 28 [2024-11-09 09:58:37,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169111257] [2024-11-09 09:58:37,420 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 09:58:37,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 09:58:37,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:58:37,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 09:58:37,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1078, Unknown=0, NotChecked=0, Total=1332 [2024-11-09 09:58:37,421 INFO L87 Difference]: Start difference. First operand 257 states and 273 transitions. Second operand has 29 states, 28 states have (on average 3.357142857142857) internal successors, (94), 28 states have internal predecessors, (94), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 09:58:38,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:58:38,187 INFO L93 Difference]: Finished difference Result 320 states and 337 transitions. [2024-11-09 09:58:38,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 09:58:38,187 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 3.357142857142857) internal successors, (94), 28 states have internal predecessors, (94), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 120 [2024-11-09 09:58:38,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:58:38,188 INFO L225 Difference]: With dead ends: 320 [2024-11-09 09:58:38,188 INFO L226 Difference]: Without dead ends: 320 [2024-11-09 09:58:38,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=545, Invalid=1711, Unknown=0, NotChecked=0, Total=2256 [2024-11-09 09:58:38,189 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 1046 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 09:58:38,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1046 Valid, 628 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 09:58:38,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-09 09:58:38,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 258. [2024-11-09 09:58:38,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 232 states have (on average 1.1724137931034482) internal successors, (272), 255 states have internal predecessors, (272), 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) [2024-11-09 09:58:38,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 274 transitions. [2024-11-09 09:58:38,194 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 274 transitions. Word has length 120 [2024-11-09 09:58:38,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:58:38,194 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 274 transitions. [2024-11-09 09:58:38,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 3.357142857142857) internal successors, (94), 28 states have internal predecessors, (94), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 09:58:38,194 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 274 transitions. [2024-11-09 09:58:38,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 09:58:38,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:58:38,195 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, 1] [2024-11-09 09:58:38,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 09:58:38,396 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,SelfDestructingSolverStorable27 [2024-11-09 09:58:38,396 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:58:38,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:58:38,396 INFO L85 PathProgramCache]: Analyzing trace with hash 643168889, now seen corresponding path program 1 times [2024-11-09 09:58:38,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:58:38,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997340075] [2024-11-09 09:58:38,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:38,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:58:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:40,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 09:58:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:40,092 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-09 09:58:40,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:58:40,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997340075] [2024-11-09 09:58:40,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997340075] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 09:58:40,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206686519] [2024-11-09 09:58:40,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:40,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:58:40,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 09:58:40,093 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 09:58:40,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 09:58:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:40,588 INFO L255 TraceCheckSpWp]: Trace formula consists of 1690 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-09 09:58:40,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 09:58:40,627 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-09 09:58:40,628 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 [2024-11-09 09:58:40,631 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 [2024-11-09 09:58:40,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 09:58:40,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 09:58:40,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2024-11-09 09:58:40,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 09:58:40,887 INFO L349 Elim1Store]: treesize reduction 38, result has 26.9 percent of original size [2024-11-09 09:58:40,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 33 [2024-11-09 09:58:40,990 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-09 09:58:40,991 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 14 treesize of output 13 [2024-11-09 09:58:41,016 INFO L349 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2024-11-09 09:58:41,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2024-11-09 09:58:41,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 [2024-11-09 09:58:41,192 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 25 treesize of output 9 [2024-11-09 09:58:41,684 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2024-11-09 09:58:41,684 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 09:58:42,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206686519] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 09:58:42,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 09:58:42,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 21 [2024-11-09 09:58:42,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452137688] [2024-11-09 09:58:42,126 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 09:58:42,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 09:58:42,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:58:42,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 09:58:42,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2024-11-09 09:58:42,128 INFO L87 Difference]: Start difference. First operand 258 states and 274 transitions. Second operand has 22 states, 21 states have (on average 4.761904761904762) internal successors, (100), 22 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 09:58:42,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:58:42,508 INFO L93 Difference]: Finished difference Result 262 states and 278 transitions. [2024-11-09 09:58:42,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 09:58:42,509 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.761904761904762) internal successors, (100), 22 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 123 [2024-11-09 09:58:42,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:58:42,510 INFO L225 Difference]: With dead ends: 262 [2024-11-09 09:58:42,510 INFO L226 Difference]: Without dead ends: 262 [2024-11-09 09:58:42,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=307, Invalid=815, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 09:58:42,511 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 784 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 09:58:42,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 283 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 09:58:42,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-11-09 09:58:42,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 261. [2024-11-09 09:58:42,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 235 states have (on average 1.1702127659574468) internal successors, (275), 258 states have internal predecessors, (275), 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) [2024-11-09 09:58:42,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 277 transitions. [2024-11-09 09:58:42,515 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 277 transitions. Word has length 123 [2024-11-09 09:58:42,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:58:42,515 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 277 transitions. [2024-11-09 09:58:42,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.761904761904762) internal successors, (100), 22 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 09:58:42,516 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 277 transitions. [2024-11-09 09:58:42,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-09 09:58:42,517 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:58:42,517 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 09:58:42,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 09:58:42,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:58:42,718 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:58:42,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:58:42,718 INFO L85 PathProgramCache]: Analyzing trace with hash 795452261, now seen corresponding path program 2 times [2024-11-09 09:58:42,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:58:42,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962155507] [2024-11-09 09:58:42,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:42,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:58:42,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:44,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 09:58:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:44,317 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-09 09:58:44,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:58:44,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962155507] [2024-11-09 09:58:44,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962155507] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 09:58:44,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649656400] [2024-11-09 09:58:44,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 09:58:44,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:58:44,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 09:58:44,320 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) [2024-11-09 09:58:44,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 09:58:44,825 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 09:58:44,826 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 09:58:44,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 1711 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-09 09:58:44,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 09:58:44,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 09:58:44,875 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 [2024-11-09 09:58:44,891 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-09 09:58:44,891 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 [2024-11-09 09:58:45,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 09:58:45,117 INFO L349 Elim1Store]: treesize reduction 40, result has 25.9 percent of original size [2024-11-09 09:58:45,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 28 [2024-11-09 09:58:45,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2024-11-09 09:58:45,172 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-09 09:58:45,173 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 14 treesize of output 13 [2024-11-09 09:58:45,190 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-09 09:58:45,190 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 [2024-11-09 09:58:45,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 [2024-11-09 09:58:45,642 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2024-11-09 09:58:45,642 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 09:58:46,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649656400] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 09:58:46,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 09:58:46,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 8] total 24 [2024-11-09 09:58:46,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563055459] [2024-11-09 09:58:46,064 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 09:58:46,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 09:58:46,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:58:46,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 09:58:46,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=757, Unknown=0, NotChecked=0, Total=930 [2024-11-09 09:58:46,065 INFO L87 Difference]: Start difference. First operand 261 states and 277 transitions. Second operand has 25 states, 24 states have (on average 4.416666666666667) internal successors, (106), 25 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 09:58:46,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:58:46,612 INFO L93 Difference]: Finished difference Result 265 states and 281 transitions. [2024-11-09 09:58:46,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 09:58:46,613 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 4.416666666666667) internal successors, (106), 25 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 126 [2024-11-09 09:58:46,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:58:46,614 INFO L225 Difference]: With dead ends: 265 [2024-11-09 09:58:46,614 INFO L226 Difference]: Without dead ends: 265 [2024-11-09 09:58:46,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=404, Invalid=1236, Unknown=0, NotChecked=0, Total=1640 [2024-11-09 09:58:46,615 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 629 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 09:58:46,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 562 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 09:58:46,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-09 09:58:46,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 264. [2024-11-09 09:58:46,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 238 states have (on average 1.1680672268907564) internal successors, (278), 261 states have internal predecessors, (278), 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) [2024-11-09 09:58:46,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 280 transitions. [2024-11-09 09:58:46,619 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 280 transitions. Word has length 126 [2024-11-09 09:58:46,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:58:46,619 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 280 transitions. [2024-11-09 09:58:46,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 4.416666666666667) internal successors, (106), 25 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 09:58:46,620 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 280 transitions. [2024-11-09 09:58:46,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-09 09:58:46,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:58:46,623 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 09:58:46,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-09 09:58:46,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:58:46,823 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:58:46,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:58:46,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1983922937, now seen corresponding path program 3 times [2024-11-09 09:58:46,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:58:46,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386996599] [2024-11-09 09:58:46,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:46,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:58:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:47,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 09:58:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:47,579 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-09 09:58:47,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:58:47,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386996599] [2024-11-09 09:58:47,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386996599] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 09:58:47,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665144705] [2024-11-09 09:58:47,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 09:58:47,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:58:47,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 09:58:47,580 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) [2024-11-09 09:58:47,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 09:58:48,031 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 09:58:48,032 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 09:58:48,036 INFO L255 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-09 09:58:48,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 09:58:48,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 09:58:48,067 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 [2024-11-09 09:58:48,077 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-09 09:58:48,078 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 [2024-11-09 09:58:48,321 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-09 09:58:48,322 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 14 treesize of output 13 [2024-11-09 09:58:48,336 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-09 09:58:48,336 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 [2024-11-09 09:58:48,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 09:58:48,352 INFO L349 Elim1Store]: treesize reduction 55, result has 1.8 percent of original size [2024-11-09 09:58:48,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 1 [2024-11-09 09:58:48,424 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 09:58:48,425 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 [2024-11-09 09:58:48,432 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 [2024-11-09 09:58:48,465 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 [2024-11-09 09:58:49,173 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2024-11-09 09:58:49,173 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 09:58:49,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665144705] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 09:58:49,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 09:58:49,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14] total 23 [2024-11-09 09:58:49,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579029107] [2024-11-09 09:58:49,759 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 09:58:49,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 09:58:49,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:58:49,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 09:58:49,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=856, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 09:58:49,761 INFO L87 Difference]: Start difference. First operand 264 states and 280 transitions. Second operand has 24 states, 23 states have (on average 4.608695652173913) internal successors, (106), 23 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 09:58:50,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:58:50,529 INFO L93 Difference]: Finished difference Result 329 states and 346 transitions. [2024-11-09 09:58:50,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 09:58:50,529 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.608695652173913) internal successors, (106), 23 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 129 [2024-11-09 09:58:50,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:58:50,531 INFO L225 Difference]: With dead ends: 329 [2024-11-09 09:58:50,531 INFO L226 Difference]: Without dead ends: 329 [2024-11-09 09:58:50,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=497, Invalid=1665, Unknown=0, NotChecked=0, Total=2162 [2024-11-09 09:58:50,532 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 655 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 09:58:50,532 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 709 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 09:58:50,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2024-11-09 09:58:50,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 268. [2024-11-09 09:58:50,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 243 states have (on average 1.1604938271604939) internal successors, (282), 265 states have internal predecessors, (282), 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) [2024-11-09 09:58:50,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 284 transitions. [2024-11-09 09:58:50,536 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 284 transitions. Word has length 129 [2024-11-09 09:58:50,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:58:50,537 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 284 transitions. [2024-11-09 09:58:50,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.608695652173913) internal successors, (106), 23 states have internal predecessors, (106), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-09 09:58:50,537 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 284 transitions. [2024-11-09 09:58:50,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-09 09:58:50,538 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:58:50,538 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 09:58:50,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-09 09:58:50,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:58:50,739 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONUNSUPPORTED_FEATURE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:58:50,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:58:50,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1150288344, now seen corresponding path program 1 times [2024-11-09 09:58:50,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:58:50,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632827498] [2024-11-09 09:58:50,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:50,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:58:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:50,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 09:58:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:50,956 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-09 09:58:50,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:58:50,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632827498] [2024-11-09 09:58:50,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632827498] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 09:58:50,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129301129] [2024-11-09 09:58:50,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:50,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:58:50,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 09:58:50,959 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) [2024-11-09 09:58:50,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 09:58:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:51,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 1797 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 09:58:51,495 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 09:58:51,514 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-09 09:58:51,514 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 09:58:51,573 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-09 09:58:51,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129301129] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 09:58:51,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 09:58:51,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-09 09:58:51,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736958310] [2024-11-09 09:58:51,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 09:58:51,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 09:58:51,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:58:51,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 09:58:51,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2024-11-09 09:58:51,575 INFO L87 Difference]: Start difference. First operand 268 states and 284 transitions. Second operand has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 15 states have internal predecessors, (86), 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) [2024-11-09 09:58:51,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:58:51,612 INFO L93 Difference]: Finished difference Result 289 states and 305 transitions. [2024-11-09 09:58:51,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 09:58:51,613 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 15 states have internal predecessors, (86), 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 139 [2024-11-09 09:58:51,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:58:51,615 INFO L225 Difference]: With dead ends: 289 [2024-11-09 09:58:51,615 INFO L226 Difference]: Without dead ends: 289 [2024-11-09 09:58:51,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2024-11-09 09:58:51,615 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 4 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 349 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 [2024-11-09 09:58:51,616 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 349 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 09:58:51,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-11-09 09:58:51,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2024-11-09 09:58:51,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 264 states have (on average 1.1477272727272727) internal successors, (303), 286 states have internal predecessors, (303), 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) [2024-11-09 09:58:51,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 305 transitions. [2024-11-09 09:58:51,626 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 305 transitions. Word has length 139 [2024-11-09 09:58:51,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:58:51,626 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 305 transitions. [2024-11-09 09:58:51,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 15 states have internal predecessors, (86), 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) [2024-11-09 09:58:51,626 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 305 transitions. [2024-11-09 09:58:51,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-09 09:58:51,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:58:51,627 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 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] [2024-11-09 09:58:51,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-09 09:58:51,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:58:51,828 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONUNSUPPORTED_FEATURE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:58:51,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:58:51,828 INFO L85 PathProgramCache]: Analyzing trace with hash 572859796, now seen corresponding path program 2 times [2024-11-09 09:58:51,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:58:51,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651029166] [2024-11-09 09:58:51,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:51,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:58:51,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:52,244 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 09:58:52,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:52,249 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-09 09:58:52,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:58:52,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651029166] [2024-11-09 09:58:52,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651029166] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 09:58:52,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377084826] [2024-11-09 09:58:52,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 09:58:52,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:58:52,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 09:58:52,251 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) [2024-11-09 09:58:52,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 09:58:52,828 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 09:58:52,828 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 09:58:52,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 1944 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 09:58:52,839 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 09:58:52,875 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-09 09:58:52,875 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 09:58:53,091 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2024-11-09 09:58:53,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377084826] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 09:58:53,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 09:58:53,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2024-11-09 09:58:53,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487957333] [2024-11-09 09:58:53,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 09:58:53,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 09:58:53,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:58:53,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 09:58:53,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2024-11-09 09:58:53,093 INFO L87 Difference]: Start difference. First operand 289 states and 305 transitions. Second operand has 29 states, 29 states have (on average 4.413793103448276) internal successors, (128), 29 states have internal predecessors, (128), 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) [2024-11-09 09:58:53,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:58:53,171 INFO L93 Difference]: Finished difference Result 331 states and 347 transitions. [2024-11-09 09:58:53,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-09 09:58:53,172 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.413793103448276) internal successors, (128), 29 states have internal predecessors, (128), 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 160 [2024-11-09 09:58:53,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:58:53,173 INFO L225 Difference]: With dead ends: 331 [2024-11-09 09:58:53,173 INFO L226 Difference]: Without dead ends: 331 [2024-11-09 09:58:53,173 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2024-11-09 09:58:53,173 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 4 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 09:58:53,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 464 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 09:58:53,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-11-09 09:58:53,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2024-11-09 09:58:53,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 306 states have (on average 1.1274509803921569) internal successors, (345), 328 states have internal predecessors, (345), 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) [2024-11-09 09:58:53,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 347 transitions. [2024-11-09 09:58:53,183 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 347 transitions. Word has length 160 [2024-11-09 09:58:53,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:58:53,183 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 347 transitions. [2024-11-09 09:58:53,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.413793103448276) internal successors, (128), 29 states have internal predecessors, (128), 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) [2024-11-09 09:58:53,183 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 347 transitions. [2024-11-09 09:58:53,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-09 09:58:53,184 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:58:53,184 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 09:58:53,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-09 09:58:53,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:58:53,385 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:58:53,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:58:53,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1186105665, now seen corresponding path program 2 times [2024-11-09 09:58:53,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:58:53,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070520135] [2024-11-09 09:58:53,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:53,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:58:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:54,120 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 09:58:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:54,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 0 proven. 534 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-09 09:58:54,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:58:54,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070520135] [2024-11-09 09:58:54,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070520135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 09:58:54,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731489695] [2024-11-09 09:58:54,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 09:58:54,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:58:54,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 09:58:54,124 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) [2024-11-09 09:58:54,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 09:58:54,705 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 09:58:54,705 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 09:58:54,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 2008 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 09:58:54,716 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 09:58:54,838 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 [2024-11-09 09:58:54,855 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 [2024-11-09 09:58:55,002 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 [2024-11-09 09:58:55,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 0 proven. 534 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-09 09:58:55,004 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 09:58:55,097 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 18 treesize of output 16 [2024-11-09 09:58:55,098 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 24 treesize of output 20 [2024-11-09 09:58:55,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 0 proven. 534 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-09 09:58:55,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731489695] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 09:58:55,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 09:58:55,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 15 [2024-11-09 09:58:55,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100757041] [2024-11-09 09:58:55,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 09:58:55,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 09:58:55,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:58:55,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 09:58:55,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-09 09:58:55,182 INFO L87 Difference]: Start difference. First operand 331 states and 347 transitions. Second operand has 16 states, 15 states have (on average 8.0) internal successors, (120), 16 states have internal predecessors, (120), 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) [2024-11-09 09:58:55,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:58:55,535 INFO L93 Difference]: Finished difference Result 559 states and 591 transitions. [2024-11-09 09:58:55,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 09:58:55,535 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 8.0) internal successors, (120), 16 states have internal predecessors, (120), 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 177 [2024-11-09 09:58:55,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:58:55,537 INFO L225 Difference]: With dead ends: 559 [2024-11-09 09:58:55,537 INFO L226 Difference]: Without dead ends: 559 [2024-11-09 09:58:55,537 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2024-11-09 09:58:55,537 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 429 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 09:58:55,538 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 1109 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 09:58:55,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2024-11-09 09:58:55,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 401. [2024-11-09 09:58:55,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 376 states have (on average 1.1143617021276595) internal successors, (419), 398 states have internal predecessors, (419), 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) [2024-11-09 09:58:55,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 421 transitions. [2024-11-09 09:58:55,543 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 421 transitions. Word has length 177 [2024-11-09 09:58:55,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:58:55,544 INFO L471 AbstractCegarLoop]: Abstraction has 401 states and 421 transitions. [2024-11-09 09:58:55,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 8.0) internal successors, (120), 16 states have internal predecessors, (120), 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) [2024-11-09 09:58:55,544 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 421 transitions. [2024-11-09 09:58:55,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-09 09:58:55,545 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:58:55,545 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 09:58:55,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-09 09:58:55,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:58:55,746 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:58:55,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:58:55,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1887615522, now seen corresponding path program 1 times [2024-11-09 09:58:55,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:58:55,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945299069] [2024-11-09 09:58:55,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:55,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:58:55,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:55,967 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 09:58:55,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:55,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1149 trivial. 0 not checked. [2024-11-09 09:58:55,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:58:55,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945299069] [2024-11-09 09:58:55,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945299069] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 09:58:55,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 09:58:55,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 09:58:55,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101115834] [2024-11-09 09:58:55,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 09:58:55,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 09:58:55,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:58:55,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 09:58:55,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 09:58:55,972 INFO L87 Difference]: Start difference. First operand 401 states and 421 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-11-09 09:58:55,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:58:55,976 INFO L93 Difference]: Finished difference Result 364 states and 376 transitions. [2024-11-09 09:58:55,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 09:58:55,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 178 [2024-11-09 09:58:55,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:58:55,977 INFO L225 Difference]: With dead ends: 364 [2024-11-09 09:58:55,977 INFO L226 Difference]: Without dead ends: 364 [2024-11-09 09:58:55,977 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 [2024-11-09 09:58:55,978 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 09:58:55,978 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 151 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 09:58:55,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-11-09 09:58:55,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2024-11-09 09:58:55,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 355 states have (on average 1.0535211267605633) internal successors, (374), 361 states have internal predecessors, (374), 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) [2024-11-09 09:58:55,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 376 transitions. [2024-11-09 09:58:55,983 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 376 transitions. Word has length 178 [2024-11-09 09:58:55,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:58:55,983 INFO L471 AbstractCegarLoop]: Abstraction has 364 states and 376 transitions. [2024-11-09 09:58:55,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-11-09 09:58:55,983 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 376 transitions. [2024-11-09 09:58:55,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-09 09:58:55,984 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:58:55,984 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 09:58:55,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-09 09:58:55,984 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:58:55,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:58:55,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1885429827, now seen corresponding path program 1 times [2024-11-09 09:58:55,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:58:55,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951205832] [2024-11-09 09:58:55,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:55,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:58:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:57,444 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 09:58:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:57,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 0 proven. 534 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-09 09:58:57,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:58:57,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951205832] [2024-11-09 09:58:57,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951205832] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 09:58:57,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112384873] [2024-11-09 09:58:57,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:57,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:58:57,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 09:58:57,450 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) [2024-11-09 09:58:57,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 09:58:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:58:58,101 INFO L255 TraceCheckSpWp]: Trace formula consists of 2010 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-09 09:58:58,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 09:58:58,191 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 [2024-11-09 09:58:58,212 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 19 treesize of output 1 [2024-11-09 09:58:58,215 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 13 treesize of output 9 [2024-11-09 09:58:58,502 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 21 treesize of output 9 [2024-11-09 09:58:58,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 0 proven. 655 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2024-11-09 09:58:58,516 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 09:58:58,742 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 33 treesize of output 31 [2024-11-09 09:58:58,744 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 31 treesize of output 29 [2024-11-09 09:58:58,746 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 50 treesize of output 46 [2024-11-09 09:58:58,749 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 28 treesize of output 24 [2024-11-09 09:58:58,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 0 proven. 534 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2024-11-09 09:58:58,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112384873] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 09:58:58,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 09:58:58,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 21 [2024-11-09 09:58:58,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50339333] [2024-11-09 09:58:58,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 09:58:58,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 09:58:58,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 09:58:58,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 09:58:58,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2024-11-09 09:58:58,818 INFO L87 Difference]: Start difference. First operand 364 states and 376 transitions. Second operand has 22 states, 21 states have (on average 6.619047619047619) internal successors, (139), 22 states have internal predecessors, (139), 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) [2024-11-09 09:58:59,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 09:58:59,125 INFO L93 Difference]: Finished difference Result 484 states and 502 transitions. [2024-11-09 09:58:59,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 09:58:59,126 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 6.619047619047619) internal successors, (139), 22 states have internal predecessors, (139), 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 178 [2024-11-09 09:58:59,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 09:58:59,127 INFO L225 Difference]: With dead ends: 484 [2024-11-09 09:58:59,127 INFO L226 Difference]: Without dead ends: 484 [2024-11-09 09:58:59,128 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2024-11-09 09:58:59,128 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 150 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 09:58:59,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 821 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 09:58:59,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2024-11-09 09:58:59,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 365. [2024-11-09 09:58:59,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 356 states have (on average 1.053370786516854) internal successors, (375), 362 states have internal predecessors, (375), 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) [2024-11-09 09:58:59,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 377 transitions. [2024-11-09 09:58:59,133 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 377 transitions. Word has length 178 [2024-11-09 09:58:59,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 09:58:59,134 INFO L471 AbstractCegarLoop]: Abstraction has 365 states and 377 transitions. [2024-11-09 09:58:59,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 6.619047619047619) internal successors, (139), 22 states have internal predecessors, (139), 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) [2024-11-09 09:58:59,134 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 377 transitions. [2024-11-09 09:58:59,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-09 09:58:59,135 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 09:58:59,135 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 20, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 09:58:59,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-09 09:58:59,335 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,SelfDestructingSolverStorable35 [2024-11-09 09:58:59,336 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 71 more)] === [2024-11-09 09:58:59,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 09:58:59,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1681217731, now seen corresponding path program 1 times [2024-11-09 09:58:59,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 09:58:59,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904561726] [2024-11-09 09:58:59,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:58:59,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 09:58:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:00,110 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-09 09:59:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:00,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 526 proven. 7 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2024-11-09 09:59:00,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 09:59:00,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904561726] [2024-11-09 09:59:00,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904561726] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 09:59:00,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585692524] [2024-11-09 09:59:00,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 09:59:00,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 09:59:00,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 09:59:00,115 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) [2024-11-09 09:59:00,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 09:59:00,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 09:59:00,815 INFO L255 TraceCheckSpWp]: Trace formula consists of 2012 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-09 09:59:00,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 09:59:00,834 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-09 09:59:00,834 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 [2024-11-09 09:59:00,878 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-09 09:59:00,878 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 14 treesize of output 13 [2024-11-09 09:59:00,895 INFO L349 Elim1Store]: treesize reduction 28, result has 30.0 percent of original size [2024-11-09 09:59:00,895 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 1 case distinctions, treesize of input 19 treesize of output 16 [2024-11-09 09:59:00,915 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-09 09:59:00,915 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 21 treesize of output 20 [2024-11-09 09:59:00,927 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 [2024-11-09 09:59:01,420 INFO L349 Elim1Store]: treesize reduction 52, result has 61.8 percent of original size [2024-11-09 09:59:01,420 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 37 treesize of output 98 [2024-11-09 09:59:01,577 INFO L349 Elim1Store]: treesize reduction 48, result has 44.8 percent of original size [2024-11-09 09:59:01,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 57 treesize of output 56 [2024-11-09 09:59:01,662 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 32 treesize of output 16 [2024-11-09 09:59:01,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 43 proven. 565 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2024-11-09 09:59:01,923 INFO L311 TraceCheckSpWp]: Computing backward predicates...