./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-regression/test27-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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/ldv-regression/test27-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 78863f43fa37191b47f0d738bb1bc2018c82b38cb68dad85c455cdbd7fd69aa4 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 07:41:01,455 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 07:41:01,529 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-09 07:41:01,548 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 07:41:01,548 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 07:41:01,577 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 07:41:01,577 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 07:41:01,577 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 07:41:01,578 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 07:41:01,578 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 07:41:01,578 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 07:41:01,579 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 07:41:01,579 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 07:41:01,586 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 07:41:01,586 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 07:41:01,587 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 07:41:01,587 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 07:41:01,587 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 07:41:01,587 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 07:41:01,587 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 07:41:01,588 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 07:41:01,588 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 07:41:01,588 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 07:41:01,589 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 07:41:01,589 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 07:41:01,590 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 07:41:01,590 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 07:41:01,591 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 07:41:01,591 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 07:41:01,591 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 07:41:01,591 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 07:41:01,592 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 07:41:01,593 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 07:41:01,593 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 07:41:01,593 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 07:41:01,593 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 07:41:01,595 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 07:41:01,595 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 07:41:01,595 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 07:41:01,596 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 07:41:01,596 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 07:41:01,596 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 07:41:01,596 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78863f43fa37191b47f0d738bb1bc2018c82b38cb68dad85c455cdbd7fd69aa4 [2024-11-09 07:41:01,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 07:41:01,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 07:41:01,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 07:41:01,923 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 07:41:01,924 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 07:41:01,925 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test27-1.c [2024-11-09 07:41:03,353 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 07:41:03,519 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 07:41:03,519 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test27-1.c [2024-11-09 07:41:03,526 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d63d0cb6/31e5cb00800a4d91a9af026e245f59f6/FLAG038b44b4d [2024-11-09 07:41:03,544 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d63d0cb6/31e5cb00800a4d91a9af026e245f59f6 [2024-11-09 07:41:03,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 07:41:03,547 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 07:41:03,548 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 07:41:03,548 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 07:41:03,552 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 07:41:03,553 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:41:03" (1/1) ... [2024-11-09 07:41:03,554 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2df284ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:03, skipping insertion in model container [2024-11-09 07:41:03,554 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:41:03" (1/1) ... [2024-11-09 07:41:03,570 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 07:41:03,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:41:03,729 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 07:41:03,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 07:41:03,758 INFO L204 MainTranslator]: Completed translation [2024-11-09 07:41:03,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:03 WrapperNode [2024-11-09 07:41:03,759 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 07:41:03,760 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 07:41:03,760 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 07:41:03,760 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 07:41:03,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:03" (1/1) ... [2024-11-09 07:41:03,772 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:03" (1/1) ... [2024-11-09 07:41:03,787 INFO L138 Inliner]: procedures = 16, calls = 43, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 120 [2024-11-09 07:41:03,788 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 07:41:03,788 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 07:41:03,788 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 07:41:03,788 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 07:41:03,797 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:03" (1/1) ... [2024-11-09 07:41:03,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:03" (1/1) ... [2024-11-09 07:41:03,799 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:03" (1/1) ... [2024-11-09 07:41:03,817 INFO L175 MemorySlicer]: Split 20 memory accesses to 5 slices as follows [2, 5, 3, 6, 4]. 30 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 2, 1, 2, 1]. [2024-11-09 07:41:03,817 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:03" (1/1) ... [2024-11-09 07:41:03,817 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:03" (1/1) ... [2024-11-09 07:41:03,824 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:03" (1/1) ... [2024-11-09 07:41:03,826 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:03" (1/1) ... [2024-11-09 07:41:03,828 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:03" (1/1) ... [2024-11-09 07:41:03,832 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:03" (1/1) ... [2024-11-09 07:41:03,834 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 07:41:03,835 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 07:41:03,835 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 07:41:03,835 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 07:41:03,839 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:03" (1/1) ... [2024-11-09 07:41:03,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 07:41:03,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:41:03,873 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 07:41:03,885 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 07:41:03,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-09 07:41:03,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-09 07:41:03,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-09 07:41:03,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-09 07:41:03,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-09 07:41:03,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 07:41:03,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 07:41:03,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 07:41:03,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 07:41:03,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 07:41:03,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-09 07:41:03,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-09 07:41:03,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-09 07:41:03,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-09 07:41:03,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-09 07:41:03,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-09 07:41:03,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 07:41:03,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 07:41:03,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 07:41:03,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 07:41:03,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 07:41:03,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-09 07:41:03,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 07:41:03,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 07:41:03,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 07:41:03,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 07:41:03,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-09 07:41:03,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-09 07:41:03,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-09 07:41:03,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 07:41:04,011 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 07:41:04,013 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 07:41:04,302 INFO L? ?]: Removed 96 outVars from TransFormulas that were not future-live. [2024-11-09 07:41:04,302 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 07:41:04,319 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 07:41:04,323 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 07:41:04,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:41:04 BoogieIcfgContainer [2024-11-09 07:41:04,324 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 07:41:04,326 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 07:41:04,327 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 07:41:04,329 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 07:41:04,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:41:03" (1/3) ... [2024-11-09 07:41:04,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ab49360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:41:04, skipping insertion in model container [2024-11-09 07:41:04,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:41:03" (2/3) ... [2024-11-09 07:41:04,331 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ab49360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:41:04, skipping insertion in model container [2024-11-09 07:41:04,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 07:41:04" (3/3) ... [2024-11-09 07:41:04,332 INFO L112 eAbstractionObserver]: Analyzing ICFG test27-1.c [2024-11-09 07:41:04,344 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 07:41:04,344 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2024-11-09 07:41:04,387 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 07:41:04,392 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;@2e84954f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 07:41:04,393 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-09 07:41:04,396 INFO L276 IsEmpty]: Start isEmpty. Operand has 78 states, 39 states have (on average 2.1538461538461537) internal successors, (84), 77 states have internal predecessors, (84), 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 07:41:04,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 07:41:04,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:41:04,401 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 07:41:04,401 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 07:41:04,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:41:04,405 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2024-11-09 07:41:04,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:41:04,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482269504] [2024-11-09 07:41:04,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:04,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:41:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:04,668 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 07:41:04,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:41:04,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482269504] [2024-11-09 07:41:04,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482269504] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:41:04,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:41:04,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:41:04,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957158202] [2024-11-09 07:41:04,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:41:04,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:41:04,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:41:04,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:41:04,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:41:04,705 INFO L87 Difference]: Start difference. First operand has 78 states, 39 states have (on average 2.1538461538461537) internal successors, (84), 77 states have internal predecessors, (84), 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) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 07:41:04,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:41:04,789 INFO L93 Difference]: Finished difference Result 74 states and 77 transitions. [2024-11-09 07:41:04,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:41:04,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2024-11-09 07:41:04,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:41:04,798 INFO L225 Difference]: With dead ends: 74 [2024-11-09 07:41:04,798 INFO L226 Difference]: Without dead ends: 72 [2024-11-09 07:41:04,800 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 07:41:04,804 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 67 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:41:04,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 41 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:41:04,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-09 07:41:04,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-09 07:41:04,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 37 states have (on average 2.027027027027027) internal successors, (75), 71 states have internal predecessors, (75), 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 07:41:04,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2024-11-09 07:41:04,835 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 4 [2024-11-09 07:41:04,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:41:04,835 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2024-11-09 07:41:04,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 07:41:04,836 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2024-11-09 07:41:04,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 07:41:04,836 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:41:04,836 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 07:41:04,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 07:41:04,837 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 07:41:04,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:41:04,838 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2024-11-09 07:41:04,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:41:04,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818626293] [2024-11-09 07:41:04,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:04,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:41:04,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:04,965 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 07:41:04,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:41:04,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818626293] [2024-11-09 07:41:04,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818626293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:41:04,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:41:04,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 07:41:04,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580832376] [2024-11-09 07:41:04,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:41:04,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:41:04,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:41:04,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:41:04,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 07:41:04,969 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 07:41:05,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:41:05,051 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2024-11-09 07:41:05,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:41:05,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2024-11-09 07:41:05,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:41:05,052 INFO L225 Difference]: With dead ends: 78 [2024-11-09 07:41:05,053 INFO L226 Difference]: Without dead ends: 78 [2024-11-09 07:41:05,053 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 07:41:05,054 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:41:05,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 102 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:41:05,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-09 07:41:05,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2024-11-09 07:41:05,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 39 states have (on average 1.9743589743589745) internal successors, (77), 73 states have internal predecessors, (77), 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 07:41:05,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2024-11-09 07:41:05,065 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 4 [2024-11-09 07:41:05,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:41:05,065 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2024-11-09 07:41:05,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 07:41:05,065 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2024-11-09 07:41:05,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 07:41:05,065 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:41:05,066 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 07:41:05,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 07:41:05,066 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 07:41:05,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:41:05,070 INFO L85 PathProgramCache]: Analyzing trace with hash 889659654, now seen corresponding path program 1 times [2024-11-09 07:41:05,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:41:05,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112315643] [2024-11-09 07:41:05,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:05,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:41:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:05,160 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 07:41:05,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:41:05,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112315643] [2024-11-09 07:41:05,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112315643] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:41:05,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:41:05,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:41:05,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178070688] [2024-11-09 07:41:05,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:41:05,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:41:05,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:41:05,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:41:05,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:41:05,163 INFO L87 Difference]: Start difference. First operand 74 states and 77 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 07:41:05,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:41:05,230 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2024-11-09 07:41:05,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:41:05,231 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 07:41:05,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:41:05,232 INFO L225 Difference]: With dead ends: 71 [2024-11-09 07:41:05,232 INFO L226 Difference]: Without dead ends: 71 [2024-11-09 07:41:05,232 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 07:41:05,233 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 125 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:41:05,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 38 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:41:05,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-09 07:41:05,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-09 07:41:05,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 39 states have (on average 1.8974358974358974) internal successors, (74), 70 states have internal predecessors, (74), 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 07:41:05,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2024-11-09 07:41:05,238 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 6 [2024-11-09 07:41:05,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:41:05,238 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2024-11-09 07:41:05,238 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 07:41:05,238 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2024-11-09 07:41:05,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 07:41:05,239 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:41:05,239 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-09 07:41:05,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 07:41:05,239 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 07:41:05,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:41:05,240 INFO L85 PathProgramCache]: Analyzing trace with hash 889659655, now seen corresponding path program 1 times [2024-11-09 07:41:05,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:41:05,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886585606] [2024-11-09 07:41:05,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:05,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:41:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:05,362 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 07:41:05,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:41:05,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886585606] [2024-11-09 07:41:05,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886585606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:41:05,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:41:05,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:41:05,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188281208] [2024-11-09 07:41:05,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:41:05,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:41:05,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:41:05,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:41:05,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:41:05,364 INFO L87 Difference]: Start difference. First operand 71 states and 74 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 07:41:05,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:41:05,421 INFO L93 Difference]: Finished difference Result 74 states and 77 transitions. [2024-11-09 07:41:05,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:41:05,422 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 07:41:05,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:41:05,422 INFO L225 Difference]: With dead ends: 74 [2024-11-09 07:41:05,422 INFO L226 Difference]: Without dead ends: 74 [2024-11-09 07:41:05,423 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 07:41:05,423 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 4 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:41:05,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 97 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:41:05,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-09 07:41:05,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2024-11-09 07:41:05,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 41 states have (on average 1.853658536585366) internal successors, (76), 72 states have internal predecessors, (76), 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 07:41:05,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2024-11-09 07:41:05,429 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 6 [2024-11-09 07:41:05,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:41:05,430 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2024-11-09 07:41:05,430 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 07:41:05,430 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2024-11-09 07:41:05,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 07:41:05,430 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:41:05,430 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:41:05,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 07:41:05,432 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 07:41:05,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:41:05,432 INFO L85 PathProgramCache]: Analyzing trace with hash -392442511, now seen corresponding path program 1 times [2024-11-09 07:41:05,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:41:05,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807287492] [2024-11-09 07:41:05,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:05,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:41:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:05,579 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 07:41:05,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:41:05,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807287492] [2024-11-09 07:41:05,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807287492] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:41:05,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792871693] [2024-11-09 07:41:05,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:05,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:41:05,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:41:05,583 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 07:41:05,584 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 07:41:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:05,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 07:41:05,654 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:41:05,704 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 07:41:05,771 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 07:41:05,771 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:41:05,828 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 07:41:05,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792871693] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:41:05,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:41:05,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-11-09 07:41:05,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339975683] [2024-11-09 07:41:05,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:41:05,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 07:41:05,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:41:05,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 07:41:05,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-09 07:41:05,830 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 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 07:41:05,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:41:05,970 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2024-11-09 07:41:05,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 07:41:05,971 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 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 07:41:05,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:41:05,971 INFO L225 Difference]: With dead ends: 84 [2024-11-09 07:41:05,971 INFO L226 Difference]: Without dead ends: 84 [2024-11-09 07:41:05,972 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-09 07:41:05,972 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 12 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:41:05,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 185 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:41:05,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-09 07:41:05,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-11-09 07:41:05,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 53 states have (on average 1.679245283018868) internal successors, (89), 83 states have internal predecessors, (89), 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 07:41:05,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2024-11-09 07:41:05,977 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 9 [2024-11-09 07:41:05,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:41:05,977 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2024-11-09 07:41:05,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 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 07:41:05,977 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2024-11-09 07:41:05,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 07:41:05,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:41:05,978 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2024-11-09 07:41:05,991 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 07:41:06,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:41:06,183 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 07:41:06,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:41:06,183 INFO L85 PathProgramCache]: Analyzing trace with hash 819867506, now seen corresponding path program 1 times [2024-11-09 07:41:06,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:41:06,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800137953] [2024-11-09 07:41:06,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:06,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:41:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:06,313 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:41:06,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:41:06,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800137953] [2024-11-09 07:41:06,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800137953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:41:06,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196904666] [2024-11-09 07:41:06,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:06,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:41:06,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:41:06,316 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 07:41:06,317 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 07:41:06,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:06,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 07:41:06,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:41:06,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:06,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2024-11-09 07:41:06,412 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 07:41:06,511 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:41:06,511 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:41:06,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:41:06,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196904666] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:41:06,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:41:06,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-11-09 07:41:06,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907722006] [2024-11-09 07:41:06,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:41:06,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 07:41:06,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:41:06,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 07:41:06,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-09 07:41:06,600 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand has 9 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:41:06,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:41:06,723 INFO L93 Difference]: Finished difference Result 87 states and 90 transitions. [2024-11-09 07:41:06,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:41:06,723 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-09 07:41:06,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:41:06,724 INFO L225 Difference]: With dead ends: 87 [2024-11-09 07:41:06,724 INFO L226 Difference]: Without dead ends: 87 [2024-11-09 07:41:06,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-11-09 07:41:06,725 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 8 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:41:06,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 157 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:41:06,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-09 07:41:06,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-09 07:41:06,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 56 states have (on average 1.6071428571428572) internal successors, (90), 86 states have internal predecessors, (90), 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 07:41:06,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 90 transitions. [2024-11-09 07:41:06,732 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 90 transitions. Word has length 11 [2024-11-09 07:41:06,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:41:06,732 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 90 transitions. [2024-11-09 07:41:06,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 07:41:06,732 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 90 transitions. [2024-11-09 07:41:06,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 07:41:06,733 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:41:06,733 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-11-09 07:41:06,751 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 07:41:06,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 07:41:06,934 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 07:41:06,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:41:06,934 INFO L85 PathProgramCache]: Analyzing trace with hash -206773099, now seen corresponding path program 1 times [2024-11-09 07:41:06,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:41:06,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666991025] [2024-11-09 07:41:06,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:06,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:41:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:07,080 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-09 07:41:07,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:41:07,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666991025] [2024-11-09 07:41:07,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666991025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:41:07,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:41:07,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:41:07,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78939090] [2024-11-09 07:41:07,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:41:07,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:41:07,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:41:07,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:41:07,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:41:07,086 INFO L87 Difference]: Start difference. First operand 87 states and 90 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 07:41:07,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:41:07,199 INFO L93 Difference]: Finished difference Result 86 states and 89 transitions. [2024-11-09 07:41:07,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:41:07,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 26 [2024-11-09 07:41:07,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:41:07,201 INFO L225 Difference]: With dead ends: 86 [2024-11-09 07:41:07,202 INFO L226 Difference]: Without dead ends: 86 [2024-11-09 07:41:07,202 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:41:07,203 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 39 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:41:07,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 92 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:41:07,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-09 07:41:07,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2024-11-09 07:41:07,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 56 states have (on average 1.5714285714285714) internal successors, (88), 84 states have internal predecessors, (88), 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 07:41:07,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2024-11-09 07:41:07,210 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 26 [2024-11-09 07:41:07,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:41:07,211 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2024-11-09 07:41:07,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 07:41:07,211 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2024-11-09 07:41:07,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-09 07:41:07,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:41:07,211 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1] [2024-11-09 07:41:07,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 07:41:07,212 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 07:41:07,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:41:07,214 INFO L85 PathProgramCache]: Analyzing trace with hash -206725433, now seen corresponding path program 2 times [2024-11-09 07:41:07,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:41:07,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867176846] [2024-11-09 07:41:07,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:07,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:41:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:07,538 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:41:07,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:41:07,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867176846] [2024-11-09 07:41:07,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867176846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:41:07,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766666030] [2024-11-09 07:41:07,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 07:41:07,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:41:07,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:41:07,540 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 07:41:07,541 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 07:41:07,612 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 07:41:07,612 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:41:07,613 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 07:41:07,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:41:07,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:07,639 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 07:41:07,831 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-09 07:41:07,831 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:41:08,127 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-09 07:41:08,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766666030] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:41:08,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:41:08,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 13 [2024-11-09 07:41:08,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982098922] [2024-11-09 07:41:08,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:41:08,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 07:41:08,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:41:08,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 07:41:08,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-09 07:41:08,130 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 14 states have internal predecessors, (46), 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 07:41:08,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:41:08,648 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2024-11-09 07:41:08,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 07:41:08,652 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 14 states have internal predecessors, (46), 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 26 [2024-11-09 07:41:08,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:41:08,653 INFO L225 Difference]: With dead ends: 93 [2024-11-09 07:41:08,653 INFO L226 Difference]: Without dead ends: 93 [2024-11-09 07:41:08,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2024-11-09 07:41:08,654 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 78 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 07:41:08,654 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 180 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 07:41:08,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-09 07:41:08,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 81. [2024-11-09 07:41:08,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 53 states have (on average 1.5849056603773586) internal successors, (84), 80 states have internal predecessors, (84), 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 07:41:08,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2024-11-09 07:41:08,664 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 26 [2024-11-09 07:41:08,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:41:08,664 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2024-11-09 07:41:08,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 14 states have internal predecessors, (46), 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 07:41:08,664 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2024-11-09 07:41:08,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-09 07:41:08,667 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:41:08,667 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:41:08,681 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 07:41:08,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:41:08,868 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 07:41:08,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:41:08,869 INFO L85 PathProgramCache]: Analyzing trace with hash -2114920321, now seen corresponding path program 1 times [2024-11-09 07:41:08,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:41:08,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318005644] [2024-11-09 07:41:08,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:08,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:41:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:09,070 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:41:09,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:41:09,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318005644] [2024-11-09 07:41:09,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318005644] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:41:09,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767812840] [2024-11-09 07:41:09,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:09,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:41:09,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:41:09,073 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 07:41:09,074 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 07:41:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:09,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 07:41:09,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:41:09,190 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:41:09,191 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:41:09,245 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:41:09,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767812840] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:41:09,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:41:09,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-09 07:41:09,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60097784] [2024-11-09 07:41:09,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:41:09,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 07:41:09,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:41:09,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 07:41:09,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-09 07:41:09,247 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 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 07:41:09,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:41:09,294 INFO L93 Difference]: Finished difference Result 111 states and 114 transitions. [2024-11-09 07:41:09,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 07:41:09,295 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 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 27 [2024-11-09 07:41:09,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:41:09,295 INFO L225 Difference]: With dead ends: 111 [2024-11-09 07:41:09,295 INFO L226 Difference]: Without dead ends: 111 [2024-11-09 07:41:09,295 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-09 07:41:09,296 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 8 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:41:09,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 313 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:41:09,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-09 07:41:09,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2024-11-09 07:41:09,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 83 states have (on average 1.3734939759036144) internal successors, (114), 110 states have internal predecessors, (114), 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 07:41:09,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 114 transitions. [2024-11-09 07:41:09,299 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 114 transitions. Word has length 27 [2024-11-09 07:41:09,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:41:09,299 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 114 transitions. [2024-11-09 07:41:09,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 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 07:41:09,300 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 114 transitions. [2024-11-09 07:41:09,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 07:41:09,300 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:41:09,301 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:41:09,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 07:41:09,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:41:09,505 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 07:41:09,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:41:09,505 INFO L85 PathProgramCache]: Analyzing trace with hash -42931233, now seen corresponding path program 2 times [2024-11-09 07:41:09,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:41:09,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067853658] [2024-11-09 07:41:09,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:09,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:41:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:10,588 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 07:41:10,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:41:10,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067853658] [2024-11-09 07:41:10,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067853658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:41:10,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:41:10,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:41:10,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306394227] [2024-11-09 07:41:10,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:41:10,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:41:10,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:41:10,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:41:10,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:41:10,590 INFO L87 Difference]: Start difference. First operand 111 states and 114 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 07:41:10,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:41:10,687 INFO L93 Difference]: Finished difference Result 110 states and 113 transitions. [2024-11-09 07:41:10,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:41:10,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 57 [2024-11-09 07:41:10,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:41:10,690 INFO L225 Difference]: With dead ends: 110 [2024-11-09 07:41:10,691 INFO L226 Difference]: Without dead ends: 108 [2024-11-09 07:41:10,692 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:41:10,693 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 48 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:41:10,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 58 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:41:10,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-09 07:41:10,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-11-09 07:41:10,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 81 states have (on average 1.345679012345679) internal successors, (109), 107 states have internal predecessors, (109), 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 07:41:10,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2024-11-09 07:41:10,701 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 57 [2024-11-09 07:41:10,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:41:10,702 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 109 transitions. [2024-11-09 07:41:10,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 07:41:10,702 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 109 transitions. [2024-11-09 07:41:10,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 07:41:10,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:41:10,703 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:41:10,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 07:41:10,703 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 07:41:10,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:41:10,703 INFO L85 PathProgramCache]: Analyzing trace with hash -43009715, now seen corresponding path program 1 times [2024-11-09 07:41:10,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:41:10,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362123487] [2024-11-09 07:41:10,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:10,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:41:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:11,169 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2024-11-09 07:41:11,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:41:11,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362123487] [2024-11-09 07:41:11,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362123487] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:41:11,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540994862] [2024-11-09 07:41:11,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:11,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:41:11,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:41:11,172 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 07:41:11,173 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 07:41:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:11,296 INFO L255 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 07:41:11,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:41:11,317 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 07:41:11,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:11,323 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 07:41:11,329 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 07:41:11,336 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 07:41:11,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:11,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:11,472 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 07:41:11,473 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:41:11,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540994862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:41:11,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:41:11,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2024-11-09 07:41:11,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122023751] [2024-11-09 07:41:11,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:41:11,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:41:11,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:41:11,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:41:11,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:41:11,474 INFO L87 Difference]: Start difference. First operand 108 states and 109 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 07:41:11,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:41:11,505 INFO L93 Difference]: Finished difference Result 107 states and 108 transitions. [2024-11-09 07:41:11,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:41:11,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 57 [2024-11-09 07:41:11,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:41:11,506 INFO L225 Difference]: With dead ends: 107 [2024-11-09 07:41:11,506 INFO L226 Difference]: Without dead ends: 107 [2024-11-09 07:41:11,507 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:41:11,507 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 2 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:41:11,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 77 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:41:11,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-09 07:41:11,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2024-11-09 07:41:11,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 81 states have (on average 1.3333333333333333) internal successors, (108), 106 states have internal predecessors, (108), 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 07:41:11,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2024-11-09 07:41:11,510 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 57 [2024-11-09 07:41:11,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:41:11,510 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2024-11-09 07:41:11,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 07:41:11,510 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2024-11-09 07:41:11,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-09 07:41:11,511 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:41:11,511 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:41:11,524 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 07:41:11,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-09 07:41:11,716 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 07:41:11,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:41:11,717 INFO L85 PathProgramCache]: Analyzing trace with hash -43009716, now seen corresponding path program 1 times [2024-11-09 07:41:11,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:41:11,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428834149] [2024-11-09 07:41:11,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:11,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:41:11,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:11,910 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-11-09 07:41:11,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:41:11,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428834149] [2024-11-09 07:41:11,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428834149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:41:11,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:41:11,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:41:11,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419093700] [2024-11-09 07:41:11,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:41:11,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:41:11,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:41:11,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:41:11,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:41:11,912 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 07:41:11,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:41:11,940 INFO L93 Difference]: Finished difference Result 106 states and 107 transitions. [2024-11-09 07:41:11,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:41:11,940 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 57 [2024-11-09 07:41:11,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:41:11,941 INFO L225 Difference]: With dead ends: 106 [2024-11-09 07:41:11,941 INFO L226 Difference]: Without dead ends: 106 [2024-11-09 07:41:11,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:41:11,941 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 50 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:41:11,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 32 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:41:11,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-09 07:41:11,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2024-11-09 07:41:11,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 81 states have (on average 1.3209876543209877) internal successors, (107), 105 states have internal predecessors, (107), 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 07:41:11,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2024-11-09 07:41:11,944 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 57 [2024-11-09 07:41:11,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:41:11,944 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2024-11-09 07:41:11,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 07:41:11,944 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2024-11-09 07:41:11,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-09 07:41:11,945 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:41:11,945 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:41:11,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 07:41:11,945 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 07:41:11,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:41:11,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1333301192, now seen corresponding path program 1 times [2024-11-09 07:41:11,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:41:11,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103436558] [2024-11-09 07:41:11,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:11,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:41:11,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:12,235 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 172 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:41:12,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:41:12,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103436558] [2024-11-09 07:41:12,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103436558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:41:12,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145304973] [2024-11-09 07:41:12,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:12,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:41:12,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:41:12,238 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 07:41:12,239 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 07:41:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:12,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 07:41:12,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:41:12,663 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 216 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:41:12,664 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:41:12,725 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 07:41:13,025 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 216 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:41:13,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145304973] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:41:13,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:41:13,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 37 [2024-11-09 07:41:13,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109679611] [2024-11-09 07:41:13,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:41:13,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-09 07:41:13,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:41:13,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-09 07:41:13,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=1035, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 07:41:13,027 INFO L87 Difference]: Start difference. First operand 106 states and 107 transitions. Second operand has 38 states, 37 states have (on average 4.648648648648648) internal successors, (172), 38 states have internal predecessors, (172), 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 07:41:13,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:41:13,356 INFO L93 Difference]: Finished difference Result 104 states and 105 transitions. [2024-11-09 07:41:13,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 07:41:13,357 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 4.648648648648648) internal successors, (172), 38 states have internal predecessors, (172), 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 58 [2024-11-09 07:41:13,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:41:13,357 INFO L225 Difference]: With dead ends: 104 [2024-11-09 07:41:13,357 INFO L226 Difference]: Without dead ends: 104 [2024-11-09 07:41:13,358 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=621, Invalid=1731, Unknown=0, NotChecked=0, Total=2352 [2024-11-09 07:41:13,358 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 83 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 07:41:13,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 285 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 07:41:13,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-09 07:41:13,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-11-09 07:41:13,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 81 states have (on average 1.2962962962962963) internal successors, (105), 103 states have internal predecessors, (105), 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 07:41:13,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2024-11-09 07:41:13,360 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 58 [2024-11-09 07:41:13,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:41:13,361 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2024-11-09 07:41:13,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 4.648648648648648) internal successors, (172), 38 states have internal predecessors, (172), 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 07:41:13,361 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2024-11-09 07:41:13,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-09 07:41:13,362 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:41:13,362 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:41:13,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 07:41:13,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:41:13,563 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 07:41:13,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:41:13,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1617335983, now seen corresponding path program 1 times [2024-11-09 07:41:13,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:41:13,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68401739] [2024-11-09 07:41:13,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:13,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:41:13,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:13,848 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-11-09 07:41:13,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:41:13,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68401739] [2024-11-09 07:41:13,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68401739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:41:13,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:41:13,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 07:41:13,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026750014] [2024-11-09 07:41:13,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:41:13,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:41:13,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:41:13,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:41:13,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:41:13,851 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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 07:41:13,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:41:13,877 INFO L93 Difference]: Finished difference Result 102 states and 103 transitions. [2024-11-09 07:41:13,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:41:13,877 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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 59 [2024-11-09 07:41:13,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:41:13,878 INFO L225 Difference]: With dead ends: 102 [2024-11-09 07:41:13,878 INFO L226 Difference]: Without dead ends: 102 [2024-11-09 07:41:13,878 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:41:13,879 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 135 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:41:13,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 27 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:41:13,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-09 07:41:13,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-09 07:41:13,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 81 states have (on average 1.271604938271605) internal successors, (103), 101 states have internal predecessors, (103), 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 07:41:13,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 103 transitions. [2024-11-09 07:41:13,881 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 103 transitions. Word has length 59 [2024-11-09 07:41:13,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:41:13,881 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 103 transitions. [2024-11-09 07:41:13,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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 07:41:13,881 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 103 transitions. [2024-11-09 07:41:13,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-09 07:41:13,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:41:13,882 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:41:13,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 07:41:13,882 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 07:41:13,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:41:13,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1617335984, now seen corresponding path program 1 times [2024-11-09 07:41:13,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:41:13,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458850953] [2024-11-09 07:41:13,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:13,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:41:13,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:14,644 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 172 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:41:14,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:41:14,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458850953] [2024-11-09 07:41:14,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458850953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:41:14,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387059598] [2024-11-09 07:41:14,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:14,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:41:14,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:41:14,646 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 07:41:14,655 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 07:41:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:14,815 INFO L255 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 07:41:14,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:41:14,831 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 07:41:14,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:14,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2024-11-09 07:41:14,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:14,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2024-11-09 07:41:14,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:14,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:14,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:14,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2024-11-09 07:41:14,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:14,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 1 [2024-11-09 07:41:14,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:14,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2024-11-09 07:41:14,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:14,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 1 [2024-11-09 07:41:14,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:14,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2024-11-09 07:41:14,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:14,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2024-11-09 07:41:14,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:14,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-09 07:41:14,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:14,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:14,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:14,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2024-11-09 07:41:14,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:14,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2024-11-09 07:41:14,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:14,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 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 07:41:14,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:14,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:14,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:14,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 07:41:14,951 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 07:41:14,955 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 07:41:15,877 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 07:41:15,877 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:41:15,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387059598] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:41:15,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:41:15,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [13] total 14 [2024-11-09 07:41:15,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030616880] [2024-11-09 07:41:15,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:41:15,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 07:41:15,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:41:15,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 07:41:15,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-11-09 07:41:15,879 INFO L87 Difference]: Start difference. First operand 102 states and 103 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 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 07:41:15,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:41:15,941 INFO L93 Difference]: Finished difference Result 100 states and 101 transitions. [2024-11-09 07:41:15,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 07:41:15,945 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), 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 59 [2024-11-09 07:41:15,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:41:15,946 INFO L225 Difference]: With dead ends: 100 [2024-11-09 07:41:15,946 INFO L226 Difference]: Without dead ends: 100 [2024-11-09 07:41:15,946 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-11-09 07:41:15,946 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 24 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:41:15,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 44 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:41:15,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-09 07:41:15,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-11-09 07:41:15,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 81 states have (on average 1.2469135802469136) internal successors, (101), 99 states have internal predecessors, (101), 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 07:41:15,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 101 transitions. [2024-11-09 07:41:15,948 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 101 transitions. Word has length 59 [2024-11-09 07:41:15,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:41:15,948 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 101 transitions. [2024-11-09 07:41:15,949 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), 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 07:41:15,949 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 101 transitions. [2024-11-09 07:41:15,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-09 07:41:15,949 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:41:15,956 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:41:15,970 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 07:41:16,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:41:16,157 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 07:41:16,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:41:16,157 INFO L85 PathProgramCache]: Analyzing trace with hash -518281198, now seen corresponding path program 1 times [2024-11-09 07:41:16,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:41:16,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797732515] [2024-11-09 07:41:16,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:16,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:41:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:16,462 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-11-09 07:41:16,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:41:16,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797732515] [2024-11-09 07:41:16,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797732515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:41:16,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:41:16,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:41:16,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728491693] [2024-11-09 07:41:16,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:41:16,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:41:16,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:41:16,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:41:16,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:41:16,467 INFO L87 Difference]: Start difference. First operand 100 states and 101 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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 07:41:16,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:41:16,549 INFO L93 Difference]: Finished difference Result 99 states and 100 transitions. [2024-11-09 07:41:16,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:41:16,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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 61 [2024-11-09 07:41:16,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:41:16,551 INFO L225 Difference]: With dead ends: 99 [2024-11-09 07:41:16,551 INFO L226 Difference]: Without dead ends: 99 [2024-11-09 07:41:16,552 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:41:16,552 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 63 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:41:16,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 64 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:41:16,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-09 07:41:16,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-11-09 07:41:16,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 98 states have internal predecessors, (100), 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 07:41:16,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2024-11-09 07:41:16,558 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 61 [2024-11-09 07:41:16,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:41:16,558 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2024-11-09 07:41:16,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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 07:41:16,558 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2024-11-09 07:41:16,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-09 07:41:16,559 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:41:16,559 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:41:16,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 07:41:16,559 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 07:41:16,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:41:16,559 INFO L85 PathProgramCache]: Analyzing trace with hash -518281197, now seen corresponding path program 1 times [2024-11-09 07:41:16,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:41:16,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236219015] [2024-11-09 07:41:16,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:16,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:41:16,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:17,206 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 172 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:41:17,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:41:17,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236219015] [2024-11-09 07:41:17,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236219015] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:41:17,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430319324] [2024-11-09 07:41:17,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:17,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:41:17,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:41:17,209 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 07:41:17,213 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 07:41:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:17,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 07:41:17,422 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:41:17,850 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 07:41:17,860 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 07:41:17,888 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 23 treesize of output 15 [2024-11-09 07:41:17,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2024-11-09 07:41:17,912 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 216 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:41:17,913 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:41:18,031 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 07:41:18,364 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 216 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:41:18,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430319324] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:41:18,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:41:18,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 43 [2024-11-09 07:41:18,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755756520] [2024-11-09 07:41:18,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:41:18,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-09 07:41:18,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:41:18,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-09 07:41:18,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=1503, Unknown=0, NotChecked=0, Total=1892 [2024-11-09 07:41:18,367 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand has 44 states, 43 states have (on average 4.209302325581396) internal successors, (181), 44 states have internal predecessors, (181), 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 07:41:19,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:41:19,210 INFO L93 Difference]: Finished difference Result 98 states and 99 transitions. [2024-11-09 07:41:19,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 07:41:19,211 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 4.209302325581396) internal successors, (181), 44 states have internal predecessors, (181), 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 61 [2024-11-09 07:41:19,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:41:19,211 INFO L225 Difference]: With dead ends: 98 [2024-11-09 07:41:19,211 INFO L226 Difference]: Without dead ends: 98 [2024-11-09 07:41:19,212 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1016 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=667, Invalid=2525, Unknown=0, NotChecked=0, Total=3192 [2024-11-09 07:41:19,213 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 75 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 07:41:19,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 461 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 07:41:19,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-09 07:41:19,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-11-09 07:41:19,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 81 states have (on average 1.2222222222222223) internal successors, (99), 97 states have internal predecessors, (99), 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 07:41:19,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2024-11-09 07:41:19,219 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 61 [2024-11-09 07:41:19,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:41:19,219 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2024-11-09 07:41:19,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 4.209302325581396) internal successors, (181), 44 states have internal predecessors, (181), 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 07:41:19,219 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2024-11-09 07:41:19,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-09 07:41:19,220 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:41:19,220 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:41:19,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 07:41:19,420 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,SelfDestructingSolverStorable16 [2024-11-09 07:41:19,420 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 07:41:19,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:41:19,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1113152061, now seen corresponding path program 1 times [2024-11-09 07:41:19,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:41:19,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774694060] [2024-11-09 07:41:19,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:19,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:41:19,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:22,106 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 07:41:22,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:41:22,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774694060] [2024-11-09 07:41:22,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774694060] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:41:22,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587382167] [2024-11-09 07:41:22,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:22,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:41:22,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:41:22,109 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 07:41:22,113 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 07:41:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:22,308 INFO L255 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 07:41:22,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:41:22,339 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 25 treesize of output 1 [2024-11-09 07:41:22,365 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 07:41:22,369 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 07:41:22,397 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 29 treesize of output 21 [2024-11-09 07:41:22,398 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 17 [2024-11-09 07:41:22,422 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 07:41:22,424 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 07:41:22,424 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:41:22,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587382167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:41:22,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:41:22,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [16] total 20 [2024-11-09 07:41:22,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406614483] [2024-11-09 07:41:22,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:41:22,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:41:22,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:41:22,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:41:22,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2024-11-09 07:41:22,426 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 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 07:41:22,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:41:22,567 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions. [2024-11-09 07:41:22,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 07:41:22,568 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 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 62 [2024-11-09 07:41:22,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:41:22,568 INFO L225 Difference]: With dead ends: 97 [2024-11-09 07:41:22,568 INFO L226 Difference]: Without dead ends: 97 [2024-11-09 07:41:22,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2024-11-09 07:41:22,569 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 64 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:41:22,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 101 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:41:22,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-09 07:41:22,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2024-11-09 07:41:22,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 81 states have (on average 1.2098765432098766) internal successors, (98), 96 states have internal predecessors, (98), 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 07:41:22,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2024-11-09 07:41:22,571 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 62 [2024-11-09 07:41:22,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:41:22,571 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2024-11-09 07:41:22,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 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 07:41:22,572 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2024-11-09 07:41:22,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-09 07:41:22,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:41:22,572 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:41:22,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 07:41:22,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-09 07:41:22,773 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 07:41:22,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:41:22,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1113152062, now seen corresponding path program 1 times [2024-11-09 07:41:22,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:41:22,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782410360] [2024-11-09 07:41:22,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:22,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:41:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:25,551 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-09 07:41:25,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:41:25,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782410360] [2024-11-09 07:41:25,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782410360] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:41:25,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230387369] [2024-11-09 07:41:25,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:25,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:41:25,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:41:25,553 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 07:41:25,554 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 07:41:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:25,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 07:41:25,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:41:25,862 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 25 treesize of output 1 [2024-11-09 07:41:25,867 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 25 treesize of output 1 [2024-11-09 07:41:25,893 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 07:41:25,899 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 07:41:25,926 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 66 treesize of output 50 [2024-11-09 07:41:25,928 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 54 treesize of output 38 [2024-11-09 07:41:25,958 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 35 treesize of output 19 [2024-11-09 07:41:25,959 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 38 treesize of output 14 [2024-11-09 07:41:25,982 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 07:41:25,982 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:41:25,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230387369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:41:25,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:41:25,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 22 [2024-11-09 07:41:25,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082759434] [2024-11-09 07:41:25,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:41:25,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 07:41:25,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:41:25,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 07:41:25,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2024-11-09 07:41:25,984 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 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 07:41:26,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:41:26,138 INFO L93 Difference]: Finished difference Result 96 states and 97 transitions. [2024-11-09 07:41:26,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 07:41:26,138 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 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 62 [2024-11-09 07:41:26,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:41:26,139 INFO L225 Difference]: With dead ends: 96 [2024-11-09 07:41:26,139 INFO L226 Difference]: Without dead ends: 96 [2024-11-09 07:41:26,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2024-11-09 07:41:26,139 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 22 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:41:26,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 148 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:41:26,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-09 07:41:26,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-11-09 07:41:26,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 81 states have (on average 1.1975308641975309) internal successors, (97), 95 states have internal predecessors, (97), 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 07:41:26,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2024-11-09 07:41:26,141 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 62 [2024-11-09 07:41:26,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:41:26,142 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2024-11-09 07:41:26,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 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 07:41:26,142 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2024-11-09 07:41:26,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 07:41:26,142 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:41:26,142 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:41:26,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 07:41:26,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:41:26,347 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 07:41:26,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:41:26,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1250765629, now seen corresponding path program 1 times [2024-11-09 07:41:26,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:41:26,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859386706] [2024-11-09 07:41:26,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:26,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:41:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:26,481 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 07:41:26,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:41:26,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859386706] [2024-11-09 07:41:26,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859386706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:41:26,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:41:26,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:41:26,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216762327] [2024-11-09 07:41:26,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:41:26,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:41:26,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:41:26,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:41:26,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:41:26,483 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 07:41:26,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:41:26,538 INFO L93 Difference]: Finished difference Result 95 states and 96 transitions. [2024-11-09 07:41:26,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:41:26,538 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 67 [2024-11-09 07:41:26,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:41:26,539 INFO L225 Difference]: With dead ends: 95 [2024-11-09 07:41:26,539 INFO L226 Difference]: Without dead ends: 95 [2024-11-09 07:41:26,541 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:41:26,541 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 47 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:41:26,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 63 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:41:26,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-09 07:41:26,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-11-09 07:41:26,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 81 states have (on average 1.1851851851851851) internal successors, (96), 94 states have internal predecessors, (96), 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 07:41:26,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2024-11-09 07:41:26,543 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 67 [2024-11-09 07:41:26,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:41:26,543 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2024-11-09 07:41:26,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 07:41:26,543 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2024-11-09 07:41:26,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-09 07:41:26,544 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:41:26,544 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:41:26,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-09 07:41:26,545 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 07:41:26,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:41:26,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1250765630, now seen corresponding path program 1 times [2024-11-09 07:41:26,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:41:26,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090977447] [2024-11-09 07:41:26,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:26,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:41:26,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:26,790 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 07:41:26,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:41:26,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090977447] [2024-11-09 07:41:26,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090977447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:41:26,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:41:26,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 07:41:26,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935363977] [2024-11-09 07:41:26,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:41:26,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 07:41:26,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:41:26,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 07:41:26,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 07:41:26,792 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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 07:41:26,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:41:26,844 INFO L93 Difference]: Finished difference Result 94 states and 95 transitions. [2024-11-09 07:41:26,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 07:41:26,845 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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 67 [2024-11-09 07:41:26,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:41:26,845 INFO L225 Difference]: With dead ends: 94 [2024-11-09 07:41:26,845 INFO L226 Difference]: Without dead ends: 94 [2024-11-09 07:41:26,845 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 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 07:41:26,847 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:41:26,847 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 105 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:41:26,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-09 07:41:26,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-09 07:41:26,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 81 states have (on average 1.1728395061728396) internal successors, (95), 93 states have internal predecessors, (95), 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 07:41:26,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2024-11-09 07:41:26,849 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 67 [2024-11-09 07:41:26,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:41:26,849 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2024-11-09 07:41:26,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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 07:41:26,850 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2024-11-09 07:41:26,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-09 07:41:26,850 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:41:26,850 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:41:26,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-09 07:41:26,850 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 07:41:26,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:41:26,851 INFO L85 PathProgramCache]: Analyzing trace with hash 119028866, now seen corresponding path program 1 times [2024-11-09 07:41:26,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:41:26,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901700135] [2024-11-09 07:41:26,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:26,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:41:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:27,115 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2024-11-09 07:41:27,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:41:27,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901700135] [2024-11-09 07:41:27,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901700135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:41:27,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:41:27,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 07:41:27,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914135763] [2024-11-09 07:41:27,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:41:27,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 07:41:27,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:41:27,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 07:41:27,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-09 07:41:27,116 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 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 07:41:27,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:41:27,204 INFO L93 Difference]: Finished difference Result 93 states and 94 transitions. [2024-11-09 07:41:27,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 07:41:27,205 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 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 68 [2024-11-09 07:41:27,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:41:27,205 INFO L225 Difference]: With dead ends: 93 [2024-11-09 07:41:27,205 INFO L226 Difference]: Without dead ends: 93 [2024-11-09 07:41:27,205 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-09 07:41:27,206 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 30 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:41:27,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 118 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:41:27,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-09 07:41:27,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-09 07:41:27,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 81 states have (on average 1.1604938271604939) internal successors, (94), 92 states have internal predecessors, (94), 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 07:41:27,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2024-11-09 07:41:27,207 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 68 [2024-11-09 07:41:27,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:41:27,207 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2024-11-09 07:41:27,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 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 07:41:27,208 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2024-11-09 07:41:27,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-09 07:41:27,208 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:41:27,208 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 07:41:27,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-09 07:41:27,208 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 07:41:27,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:41:27,209 INFO L85 PathProgramCache]: Analyzing trace with hash 119028867, now seen corresponding path program 1 times [2024-11-09 07:41:27,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:41:27,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905855110] [2024-11-09 07:41:27,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:27,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:41:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:27,742 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 07:41:27,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:41:27,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905855110] [2024-11-09 07:41:27,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905855110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:41:27,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:41:27,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 07:41:27,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195269729] [2024-11-09 07:41:27,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:41:27,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 07:41:27,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:41:27,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 07:41:27,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-09 07:41:27,744 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 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 07:41:27,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:41:27,820 INFO L93 Difference]: Finished difference Result 92 states and 93 transitions. [2024-11-09 07:41:27,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 07:41:27,820 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 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 68 [2024-11-09 07:41:27,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:41:27,821 INFO L225 Difference]: With dead ends: 92 [2024-11-09 07:41:27,821 INFO L226 Difference]: Without dead ends: 92 [2024-11-09 07:41:27,821 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-09 07:41:27,821 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:41:27,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 123 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:41:27,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-09 07:41:27,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-09 07:41:27,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 81 states have (on average 1.1481481481481481) internal successors, (93), 91 states have internal predecessors, (93), 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 07:41:27,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2024-11-09 07:41:27,823 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 68 [2024-11-09 07:41:27,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:41:27,823 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions. [2024-11-09 07:41:27,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 states have internal predecessors, (23), 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 07:41:27,823 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions. [2024-11-09 07:41:27,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-09 07:41:27,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:41:27,824 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 07:41:27,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-09 07:41:27,824 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 07:41:27,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:41:27,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1577375673, now seen corresponding path program 1 times [2024-11-09 07:41:27,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:41:27,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319099456] [2024-11-09 07:41:27,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:27,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:41:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:31,392 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:41:31,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:41:31,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319099456] [2024-11-09 07:41:31,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319099456] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:41:31,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667658455] [2024-11-09 07:41:31,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:31,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:41:31,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:41:31,395 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 07:41:31,397 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 07:41:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:31,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 07:41:31,631 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:41:31,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-09 07:41:31,642 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 07:41:31,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-09 07:41:31,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:31,655 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 6 treesize of output 1 [2024-11-09 07:41:31,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 5 [2024-11-09 07:41:31,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-09 07:41:31,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-09 07:41:31,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:31,710 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 6 treesize of output 1 [2024-11-09 07:41:31,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:31,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 1 [2024-11-09 07:41:31,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:31,722 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 6 treesize of output 1 [2024-11-09 07:41:31,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 5 [2024-11-09 07:41:31,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-09 07:41:31,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:31,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 1 [2024-11-09 07:41:31,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:31,760 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 6 treesize of output 1 [2024-11-09 07:41:31,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-09 07:41:31,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:31,774 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 6 treesize of output 1 [2024-11-09 07:41:31,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 5 [2024-11-09 07:41:31,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:31,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 1 [2024-11-09 07:41:31,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-09 07:41:31,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 5 [2024-11-09 07:41:31,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2024-11-09 07:41:31,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 5 [2024-11-09 07:41:31,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:31,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 1 [2024-11-09 07:41:31,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 5 [2024-11-09 07:41:31,963 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 07:41:31,988 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 25 treesize of output 1 [2024-11-09 07:41:31,991 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 25 treesize of output 1 [2024-11-09 07:41:32,020 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 07:41:32,025 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 07:41:32,054 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 49 treesize of output 37 [2024-11-09 07:41:32,056 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 41 treesize of output 29 [2024-11-09 07:41:32,087 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 37 treesize of output 21 [2024-11-09 07:41:32,089 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 29 treesize of output 13 [2024-11-09 07:41:32,114 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 07:41:32,143 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 07:41:32,144 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:41:32,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667658455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:41:32,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:41:32,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [24] total 31 [2024-11-09 07:41:32,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023503558] [2024-11-09 07:41:32,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:41:32,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 07:41:32,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:41:32,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 07:41:32,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=884, Unknown=0, NotChecked=0, Total=992 [2024-11-09 07:41:32,145 INFO L87 Difference]: Start difference. First operand 92 states and 93 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 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 07:41:32,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:41:32,410 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2024-11-09 07:41:32,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 07:41:32,411 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 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 70 [2024-11-09 07:41:32,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:41:32,411 INFO L225 Difference]: With dead ends: 91 [2024-11-09 07:41:32,411 INFO L226 Difference]: Without dead ends: 91 [2024-11-09 07:41:32,412 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=1395, Unknown=0, NotChecked=0, Total=1560 [2024-11-09 07:41:32,412 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 69 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:41:32,412 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 131 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:41:32,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-09 07:41:32,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-11-09 07:41:32,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 81 states have (on average 1.1358024691358024) internal successors, (92), 90 states have internal predecessors, (92), 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 07:41:32,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2024-11-09 07:41:32,414 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 70 [2024-11-09 07:41:32,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:41:32,415 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2024-11-09 07:41:32,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 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 07:41:32,415 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2024-11-09 07:41:32,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-09 07:41:32,415 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:41:32,415 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 07:41:32,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-09 07:41:32,616 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,SelfDestructingSolverStorable23 [2024-11-09 07:41:32,617 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 07:41:32,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:41:32,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1577375672, now seen corresponding path program 1 times [2024-11-09 07:41:32,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:41:32,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622865384] [2024-11-09 07:41:32,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:32,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:41:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:39,089 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:41:39,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:41:39,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622865384] [2024-11-09 07:41:39,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622865384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:41:39,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732214205] [2024-11-09 07:41:39,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:39,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:41:39,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:41:39,091 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 07:41:39,092 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 07:41:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:39,331 INFO L255 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-09 07:41:39,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:41:39,343 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 07:41:39,346 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 07:41:39,352 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 07:41:39,355 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 07:41:39,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 1 [2024-11-09 07:41:39,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:39,370 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 07:41:39,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 1 [2024-11-09 07:41:39,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 1 [2024-11-09 07:41:39,387 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 07:41:39,392 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 07:41:39,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 1 [2024-11-09 07:41:39,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 1 [2024-11-09 07:41:39,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 1 [2024-11-09 07:41:39,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 1 [2024-11-09 07:41:39,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 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 07:41:39,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 1 [2024-11-09 07:41:39,603 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 07:41:39,606 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 07:41:39,650 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 25 treesize of output 1 [2024-11-09 07:41:39,653 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 25 treesize of output 1 [2024-11-09 07:41:39,707 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 07:41:39,712 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 07:41:39,757 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 92 treesize of output 72 [2024-11-09 07:41:39,760 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 76 treesize of output 56 [2024-11-09 07:41:39,813 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 64 treesize of output 40 [2024-11-09 07:41:39,815 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 48 treesize of output 24 [2024-11-09 07:41:39,892 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 07:41:39,894 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 43 treesize of output 27 [2024-11-09 07:41:40,031 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 07:41:40,031 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:41:40,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732214205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:41:40,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:41:40,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [24] total 33 [2024-11-09 07:41:40,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767441950] [2024-11-09 07:41:40,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:41:40,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 07:41:40,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:41:40,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 07:41:40,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1008, Unknown=0, NotChecked=0, Total=1122 [2024-11-09 07:41:40,032 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand has 11 states, 10 states have (on average 2.5) internal successors, (25), 11 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 07:41:40,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:41:40,540 INFO L93 Difference]: Finished difference Result 90 states and 91 transitions. [2024-11-09 07:41:40,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 07:41:40,540 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 11 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 70 [2024-11-09 07:41:40,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:41:40,544 INFO L225 Difference]: With dead ends: 90 [2024-11-09 07:41:40,544 INFO L226 Difference]: Without dead ends: 90 [2024-11-09 07:41:40,545 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=178, Invalid=1544, Unknown=0, NotChecked=0, Total=1722 [2024-11-09 07:41:40,545 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 48 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:41:40,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 145 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:41:40,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-09 07:41:40,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2024-11-09 07:41:40,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 81 states have (on average 1.123456790123457) internal successors, (91), 89 states have internal predecessors, (91), 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 07:41:40,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2024-11-09 07:41:40,552 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 70 [2024-11-09 07:41:40,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:41:40,552 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2024-11-09 07:41:40,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 11 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 07:41:40,552 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2024-11-09 07:41:40,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-09 07:41:40,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:41:40,553 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 07:41:40,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 07:41:40,753 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,SelfDestructingSolverStorable24 [2024-11-09 07:41:40,754 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 07:41:40,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:41:40,754 INFO L85 PathProgramCache]: Analyzing trace with hash -361444922, now seen corresponding path program 1 times [2024-11-09 07:41:40,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:41:40,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298512091] [2024-11-09 07:41:40,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:40,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:41:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:40,843 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 07:41:40,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:41:40,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298512091] [2024-11-09 07:41:40,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298512091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:41:40,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:41:40,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 07:41:40,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751919117] [2024-11-09 07:41:40,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:41:40,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 07:41:40,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:41:40,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 07:41:40,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 07:41:40,845 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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 07:41:40,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:41:40,903 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2024-11-09 07:41:40,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:41:40,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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 73 [2024-11-09 07:41:40,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:41:40,905 INFO L225 Difference]: With dead ends: 89 [2024-11-09 07:41:40,909 INFO L226 Difference]: Without dead ends: 89 [2024-11-09 07:41:40,909 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:41:40,910 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 29 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:41:40,910 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 39 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:41:40,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-09 07:41:40,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-09 07:41:40,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 81 states have (on average 1.1111111111111112) internal successors, (90), 88 states have internal predecessors, (90), 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 07:41:40,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2024-11-09 07:41:40,911 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 73 [2024-11-09 07:41:40,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:41:40,912 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2024-11-09 07:41:40,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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 07:41:40,912 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2024-11-09 07:41:40,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-09 07:41:40,912 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:41:40,914 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 07:41:40,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-09 07:41:40,915 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 07:41:40,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:41:40,919 INFO L85 PathProgramCache]: Analyzing trace with hash -361444921, now seen corresponding path program 1 times [2024-11-09 07:41:40,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:41:40,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706295673] [2024-11-09 07:41:40,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:40,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:41:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:41,086 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 07:41:41,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:41:41,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706295673] [2024-11-09 07:41:41,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706295673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:41:41,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:41:41,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 07:41:41,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678806635] [2024-11-09 07:41:41,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:41:41,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 07:41:41,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:41:41,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 07:41:41,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:41:41,088 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 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 07:41:41,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:41:41,123 INFO L93 Difference]: Finished difference Result 88 states and 89 transitions. [2024-11-09 07:41:41,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 07:41:41,123 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), 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 73 [2024-11-09 07:41:41,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:41:41,124 INFO L225 Difference]: With dead ends: 88 [2024-11-09 07:41:41,124 INFO L226 Difference]: Without dead ends: 88 [2024-11-09 07:41:41,124 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 07:41:41,126 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 13 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 07:41:41,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 60 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 07:41:41,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-09 07:41:41,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-09 07:41:41,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 81 states have (on average 1.0987654320987654) internal successors, (89), 87 states have internal predecessors, (89), 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 07:41:41,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2024-11-09 07:41:41,128 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 73 [2024-11-09 07:41:41,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:41:41,128 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2024-11-09 07:41:41,128 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), 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 07:41:41,128 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2024-11-09 07:41:41,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-09 07:41:41,129 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:41:41,129 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 07:41:41,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-09 07:41:41,129 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 07:41:41,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:41:41,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1680109360, now seen corresponding path program 1 times [2024-11-09 07:41:41,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:41:41,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275356217] [2024-11-09 07:41:41,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:41,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:41:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:41,330 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-11-09 07:41:41,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:41:41,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275356217] [2024-11-09 07:41:41,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275356217] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:41:41,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 07:41:41,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 07:41:41,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551763692] [2024-11-09 07:41:41,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:41:41,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 07:41:41,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:41:41,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 07:41:41,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-09 07:41:41,332 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 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 07:41:41,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:41:41,397 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2024-11-09 07:41:41,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 07:41:41,398 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 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 74 [2024-11-09 07:41:41,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:41:41,398 INFO L225 Difference]: With dead ends: 87 [2024-11-09 07:41:41,398 INFO L226 Difference]: Without dead ends: 87 [2024-11-09 07:41:41,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-09 07:41:41,399 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 22 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:41:41,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 79 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:41:41,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-09 07:41:41,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-09 07:41:41,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 81 states have (on average 1.0864197530864197) internal successors, (88), 86 states have internal predecessors, (88), 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 07:41:41,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2024-11-09 07:41:41,400 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 74 [2024-11-09 07:41:41,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:41:41,401 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2024-11-09 07:41:41,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 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 07:41:41,401 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2024-11-09 07:41:41,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-09 07:41:41,401 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:41:41,401 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 07:41:41,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-09 07:41:41,402 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 07:41:41,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:41:41,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1680109361, now seen corresponding path program 1 times [2024-11-09 07:41:41,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:41:41,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639465378] [2024-11-09 07:41:41,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:41,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:41:41,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:48,973 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:41:48,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:41:48,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639465378] [2024-11-09 07:41:48,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639465378] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:41:48,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088366803] [2024-11-09 07:41:48,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:48,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:41:48,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:41:48,975 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 07:41:48,976 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 07:41:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:49,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-09 07:41:49,261 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:41:49,334 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 07:41:49,338 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 07:41:49,341 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 25 treesize of output 1 [2024-11-09 07:41:49,342 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 16 treesize of output 12 [2024-11-09 07:41:49,378 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 07:41:49,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 07:41:49,455 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 07:41:49,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 07:41:49,646 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 47 treesize of output 20 [2024-11-09 07:41:49,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 07:41:49,693 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 07:41:49,785 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 07:41:49,819 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 07:41:49,820 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 07:41:49,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088366803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 07:41:49,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 07:41:49,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [28] total 38 [2024-11-09 07:41:49,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406968648] [2024-11-09 07:41:49,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 07:41:49,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 07:41:49,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:41:49,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 07:41:49,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1307, Unknown=0, NotChecked=0, Total=1406 [2024-11-09 07:41:49,821 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 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 07:41:50,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:41:50,062 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions. [2024-11-09 07:41:50,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 07:41:50,062 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 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 74 [2024-11-09 07:41:50,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:41:50,063 INFO L225 Difference]: With dead ends: 89 [2024-11-09 07:41:50,063 INFO L226 Difference]: Without dead ends: 89 [2024-11-09 07:41:50,063 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=124, Invalid=1682, Unknown=0, NotChecked=0, Total=1806 [2024-11-09 07:41:50,064 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 7 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:41:50,064 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 268 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 07:41:50,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-09 07:41:50,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-09 07:41:50,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 83 states have (on average 1.0843373493975903) internal successors, (90), 88 states have internal predecessors, (90), 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 07:41:50,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2024-11-09 07:41:50,065 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 74 [2024-11-09 07:41:50,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:41:50,065 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2024-11-09 07:41:50,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 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 07:41:50,065 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2024-11-09 07:41:50,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-09 07:41:50,066 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:41:50,066 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 07:41:50,082 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 07:41:50,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-09 07:41:50,270 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 07:41:50,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:41:50,271 INFO L85 PathProgramCache]: Analyzing trace with hash -275719510, now seen corresponding path program 1 times [2024-11-09 07:41:50,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:41:50,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168463848] [2024-11-09 07:41:50,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:50,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:41:50,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:56,691 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 5 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:41:56,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:41:56,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168463848] [2024-11-09 07:41:56,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168463848] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:41:56,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186941620] [2024-11-09 07:41:56,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:41:56,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:41:56,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:41:56,694 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 07:41:56,695 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 07:41:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:41:56,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-09 07:41:56,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:41:57,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 1 [2024-11-09 07:41:57,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 1 [2024-11-09 07:41:57,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 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 07:41:57,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 1 [2024-11-09 07:41:57,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:57,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 1 [2024-11-09 07:41:57,051 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 07:41:57,056 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 07:41:57,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:57,065 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 07:41:57,069 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 07:41:57,073 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 07:41:57,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 1 [2024-11-09 07:41:57,092 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 07:41:57,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:57,100 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 07:41:57,105 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 07:41:57,109 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 07:41:57,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 1 [2024-11-09 07:41:57,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:57,131 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 07:41:57,135 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 07:41:57,140 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 07:41:57,143 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 07:41:57,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:41:57,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 1 [2024-11-09 07:41:57,164 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 838 treesize of output 822 [2024-11-09 07:41:57,615 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 11 [2024-11-09 07:41:57,707 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 11 treesize of output 7 [2024-11-09 07:41:57,719 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 16 treesize of output 13 [2024-11-09 07:41:57,814 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 11 [2024-11-09 07:41:57,822 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 07:41:57,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 07:41:57,910 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 07:41:58,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 3 [2024-11-09 07:41:58,090 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 60 treesize of output 24 [2024-11-09 07:41:58,166 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 13 [2024-11-09 07:41:58,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 07:41:58,641 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 29 treesize of output 13 [2024-11-09 07:41:58,850 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:41:58,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-09 07:41:58,854 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:41:58,856 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:41:58,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2024-11-09 07:41:58,913 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 07:41:58,914 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:42:00,638 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 67 treesize of output 65 [2024-11-09 07:42:00,649 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 128 treesize of output 126 [2024-11-09 07:42:00,671 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 76 treesize of output 74 [2024-11-09 07:42:00,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:42:00,679 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 67 treesize of output 65 [2024-11-09 07:42:00,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 07:42:01,878 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 07:42:01,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186941620] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:42:01,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:42:01,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 19, 19] total 68 [2024-11-09 07:42:01,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919515350] [2024-11-09 07:42:01,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:42:01,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-09 07:42:01,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:42:01,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-09 07:42:01,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=4491, Unknown=0, NotChecked=0, Total=4692 [2024-11-09 07:42:01,882 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand has 69 states, 68 states have (on average 1.9852941176470589) internal successors, (135), 69 states have internal predecessors, (135), 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 07:42:06,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:42:06,515 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2024-11-09 07:42:06,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-09 07:42:06,515 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 1.9852941176470589) internal successors, (135), 69 states have internal predecessors, (135), 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 76 [2024-11-09 07:42:06,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:42:06,516 INFO L225 Difference]: With dead ends: 92 [2024-11-09 07:42:06,516 INFO L226 Difference]: Without dead ends: 92 [2024-11-09 07:42:06,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1779 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=586, Invalid=9920, Unknown=0, NotChecked=0, Total=10506 [2024-11-09 07:42:06,519 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 107 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 3199 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 3209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 07:42:06,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 895 Invalid, 3209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 3199 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 07:42:06,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-09 07:42:06,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2024-11-09 07:42:06,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.072289156626506) internal successors, (89), 87 states have internal predecessors, (89), 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 07:42:06,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2024-11-09 07:42:06,521 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 76 [2024-11-09 07:42:06,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:42:06,521 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2024-11-09 07:42:06,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 1.9852941176470589) internal successors, (135), 69 states have internal predecessors, (135), 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 07:42:06,521 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2024-11-09 07:42:06,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-09 07:42:06,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:42:06,522 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 07:42:06,537 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 07:42:06,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:42:06,726 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 07:42:06,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:42:06,727 INFO L85 PathProgramCache]: Analyzing trace with hash 42629808, now seen corresponding path program 1 times [2024-11-09 07:42:06,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:42:06,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481371025] [2024-11-09 07:42:06,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:42:06,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:42:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:42:09,779 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 0 proven. 237 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:42:09,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:42:09,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481371025] [2024-11-09 07:42:09,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481371025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:42:09,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89195786] [2024-11-09 07:42:09,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:42:09,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:42:09,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:42:09,782 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 07:42:09,783 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 07:42:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:42:10,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-09 07:42:10,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:42:10,360 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 07:42:10,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-09 07:42:10,410 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 07:42:10,457 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 07:42:10,463 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 07:42:10,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 07:42:10,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 07:42:10,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 07:42:10,902 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 116 treesize of output 76 [2024-11-09 07:42:10,905 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 95 treesize of output 47 [2024-11-09 07:42:10,999 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:42:11,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2024-11-09 07:42:11,005 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:42:11,007 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 07:42:11,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 19 [2024-11-09 07:42:11,290 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 30 treesize of output 12 [2024-11-09 07:42:11,373 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 07:42:11,374 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:42:12,406 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 38 treesize of output 36 [2024-11-09 07:42:12,408 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 34 [2024-11-09 07:42:12,411 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 70 treesize of output 68 [2024-11-09 07:42:12,414 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 92 treesize of output 88 [2024-11-09 07:42:12,485 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 41 treesize of output 35 [2024-11-09 07:42:12,636 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 07:42:12,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89195786] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 07:42:12,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 07:42:12,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 17, 19] total 64 [2024-11-09 07:42:12,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546506311] [2024-11-09 07:42:12,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 07:42:12,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-09 07:42:12,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 07:42:12,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-09 07:42:12,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=3808, Unknown=0, NotChecked=0, Total=4032 [2024-11-09 07:42:12,639 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 64 states, 64 states have (on average 2.125) internal successors, (136), 64 states have internal predecessors, (136), 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 07:42:14,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 07:42:14,960 INFO L93 Difference]: Finished difference Result 100 states and 102 transitions. [2024-11-09 07:42:14,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-09 07:42:14,961 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.125) internal successors, (136), 64 states have internal predecessors, (136), 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 77 [2024-11-09 07:42:14,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 07:42:14,961 INFO L225 Difference]: With dead ends: 100 [2024-11-09 07:42:14,962 INFO L226 Difference]: Without dead ends: 98 [2024-11-09 07:42:14,963 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1626 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=445, Invalid=7037, Unknown=0, NotChecked=0, Total=7482 [2024-11-09 07:42:14,964 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 14 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 2588 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 2590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-09 07:42:14,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1079 Invalid, 2590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2588 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-09 07:42:14,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-09 07:42:14,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2024-11-09 07:42:14,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 89 states have (on average 1.0674157303370786) internal successors, (95), 93 states have internal predecessors, (95), 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 07:42:14,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2024-11-09 07:42:14,969 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 77 [2024-11-09 07:42:14,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 07:42:14,970 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2024-11-09 07:42:14,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.125) internal successors, (136), 64 states have internal predecessors, (136), 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 07:42:14,970 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2024-11-09 07:42:14,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-09 07:42:14,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 07:42:14,970 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 5, 4, 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 07:42:14,998 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 07:42:15,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:42:15,172 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-09 07:42:15,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 07:42:15,172 INFO L85 PathProgramCache]: Analyzing trace with hash 936735525, now seen corresponding path program 2 times [2024-11-09 07:42:15,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 07:42:15,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060143136] [2024-11-09 07:42:15,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 07:42:15,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 07:42:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 07:42:21,839 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 07:42:21,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 07:42:21,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060143136] [2024-11-09 07:42:21,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060143136] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 07:42:21,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27160629] [2024-11-09 07:42:21,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 07:42:21,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 07:42:21,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 07:42:21,841 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 07:42:21,842 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 07:42:22,182 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 07:42:22,182 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 07:42:22,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-09 07:42:22,188 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 07:42:22,454 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 07:42:22,509 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 07:42:22,515 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 07:42:22,579 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 07:42:22,581 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 07:42:22,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 07:42:22,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-09 07:42:22,742 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 7 treesize of output 3 [2024-11-09 07:42:23,222 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 104 treesize of output 44 [2024-11-09 07:42:23,227 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 46 treesize of output 10 [2024-11-09 07:42:23,339 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:42:23,339 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:42:23,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2024-11-09 07:42:23,344 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:42:23,345 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 07:42:23,354 INFO L349 Elim1Store]: treesize reduction 3, result has 70.0 percent of original size [2024-11-09 07:42:23,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 28 treesize of output 22 [2024-11-09 07:42:23,868 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 30 treesize of output 12 [2024-11-09 07:42:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 07:42:23,915 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 07:42:25,291 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 55 treesize of output 51 [2024-11-09 07:42:25,293 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 51 treesize of output 47 [2024-11-09 07:42:25,302 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 07:42:25,303 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 186 treesize of output 181 [2024-11-09 07:42:25,313 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 0 case distinctions, treesize of input 464 treesize of output 432