./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-1.i -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 fdc85b042221b41aa26e62667e19ce1f6c246be9a2cb4f81fe8b15c8429db160 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:21:48,548 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:21:48,601 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 09:21:48,606 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:21:48,607 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:21:48,625 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:21:48,625 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:21:48,626 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:21:48,626 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:21:48,626 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:21:48,626 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:21:48,626 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:21:48,627 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:21:48,627 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:21:48,627 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:21:48,628 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:21:48,628 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:21:48,628 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:21:48,628 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:21:48,628 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:21:48,628 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:21:48,628 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:21:48,629 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:21:48,629 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:21:48,629 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:21:48,629 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:21:48,629 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:21:48,629 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:21:48,629 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:21:48,629 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:21:48,629 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:21:48,629 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:21:48,629 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:21:48,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:21:48,630 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:21:48,630 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:21:48,630 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 09:21:48,630 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 09:21:48,630 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:21:48,630 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:21:48,630 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:21:48,631 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:21:48,631 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> fdc85b042221b41aa26e62667e19ce1f6c246be9a2cb4f81fe8b15c8429db160 [2025-03-04 09:21:48,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:21:48,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:21:48,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:21:48,845 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:21:48,845 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:21:48,845 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-1.i [2025-03-04 09:21:49,985 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e79c7f277/743e8d6d6c4142b1a1c299e9a90599d0/FLAGc8f8c0f59 [2025-03-04 09:21:50,249 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:21:50,250 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-1.i [2025-03-04 09:21:50,266 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e79c7f277/743e8d6d6c4142b1a1c299e9a90599d0/FLAGc8f8c0f59 [2025-03-04 09:21:50,286 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e79c7f277/743e8d6d6c4142b1a1c299e9a90599d0 [2025-03-04 09:21:50,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:21:50,289 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:21:50,290 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:21:50,292 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:21:50,295 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:21:50,296 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:21:50" (1/1) ... [2025-03-04 09:21:50,297 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e619e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:21:50, skipping insertion in model container [2025-03-04 09:21:50,297 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:21:50" (1/1) ... [2025-03-04 09:21:50,327 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:21:50,580 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:21:50,610 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:21:50,612 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:21:50,615 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:21:50,620 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:21:50,627 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-03-04 09:21:50,634 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:21:50,641 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 09:21:50,696 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:21:50,721 INFO L204 MainTranslator]: Completed translation [2025-03-04 09:21:50,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:21:50 WrapperNode [2025-03-04 09:21:50,721 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:21:50,722 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 09:21:50,722 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 09:21:50,722 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 09:21:50,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:21:50" (1/1) ... [2025-03-04 09:21:50,739 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:21:50" (1/1) ... [2025-03-04 09:21:50,771 INFO L138 Inliner]: procedures = 176, calls = 170, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 779 [2025-03-04 09:21:50,772 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 09:21:50,772 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 09:21:50,772 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 09:21:50,772 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 09:21:50,780 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:21:50" (1/1) ... [2025-03-04 09:21:50,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:21:50" (1/1) ... [2025-03-04 09:21:50,786 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:21:50" (1/1) ... [2025-03-04 09:21:50,817 INFO L175 MemorySlicer]: Split 158 memory accesses to 2 slices as follows [2, 156]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 42 writes are split as follows [0, 42]. [2025-03-04 09:21:50,817 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:21:50" (1/1) ... [2025-03-04 09:21:50,817 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:21:50" (1/1) ... [2025-03-04 09:21:50,834 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:21:50" (1/1) ... [2025-03-04 09:21:50,836 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:21:50" (1/1) ... [2025-03-04 09:21:50,842 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:21:50" (1/1) ... [2025-03-04 09:21:50,844 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:21:50" (1/1) ... [2025-03-04 09:21:50,847 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 09:21:50,847 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 09:21:50,847 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 09:21:50,847 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 09:21:50,848 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:21:50" (1/1) ... [2025-03-04 09:21:50,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:21:50,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:21:50,878 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) [2025-03-04 09:21:50,880 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 [2025-03-04 09:21:50,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 09:21:50,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 09:21:50,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 09:21:50,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 09:21:50,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-04 09:21:50,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-04 09:21:50,899 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-04 09:21:50,899 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-04 09:21:50,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 09:21:50,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 09:21:50,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-04 09:21:50,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-04 09:21:50,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-04 09:21:50,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-04 09:21:50,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 09:21:50,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 09:21:50,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 09:21:50,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 09:21:50,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 09:21:51,027 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 09:21:51,028 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 09:21:52,214 INFO L? ?]: Removed 762 outVars from TransFormulas that were not future-live. [2025-03-04 09:21:52,214 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 09:21:52,261 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 09:21:52,261 INFO L336 CfgBuilder]: Removed 1 assume(true) statements. [2025-03-04 09:21:52,262 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:21:52 BoogieIcfgContainer [2025-03-04 09:21:52,262 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 09:21:52,263 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 09:21:52,263 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 09:21:52,270 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 09:21:52,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 09:21:50" (1/3) ... [2025-03-04 09:21:52,271 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37953054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:21:52, skipping insertion in model container [2025-03-04 09:21:52,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:21:50" (2/3) ... [2025-03-04 09:21:52,271 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37953054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:21:52, skipping insertion in model container [2025-03-04 09:21:52,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:21:52" (3/3) ... [2025-03-04 09:21:52,272 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_FNV_nondet_test1-1.i [2025-03-04 09:21:52,282 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 09:21:52,283 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_FNV_nondet_test1-1.i that has 3 procedures, 737 locations, 1 initial locations, 19 loop locations, and 320 error locations. [2025-03-04 09:21:52,327 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:21:52,339 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;@2df824df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:21:52,340 INFO L334 AbstractCegarLoop]: Starting to check reachability of 320 error locations. [2025-03-04 09:21:52,345 INFO L276 IsEmpty]: Start isEmpty. Operand has 732 states, 410 states have (on average 2.0658536585365854) internal successors, (847), 727 states have internal predecessors, (847), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:21:52,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-04 09:21:52,348 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:21:52,349 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-04 09:21:52,349 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr318REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:21:52,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:21:52,353 INFO L85 PathProgramCache]: Analyzing trace with hash 864568488, now seen corresponding path program 1 times [2025-03-04 09:21:52,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:21:52,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147701123] [2025-03-04 09:21:52,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:21:52,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:21:52,421 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-04 09:21:52,427 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-04 09:21:52,428 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:21:52,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:21:52,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:21:52,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:21:52,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147701123] [2025-03-04 09:21:52,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147701123] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:21:52,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:21:52,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:21:52,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478147323] [2025-03-04 09:21:52,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:21:52,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-04 09:21:52,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:21:52,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-04 09:21:52,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 09:21:52,486 INFO L87 Difference]: Start difference. First operand has 732 states, 410 states have (on average 2.0658536585365854) internal successors, (847), 727 states have internal predecessors, (847), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2025-03-04 09:21:52,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:21:52,569 INFO L93 Difference]: Finished difference Result 722 states and 810 transitions. [2025-03-04 09:21:52,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-04 09:21:52,570 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2025-03-04 09:21:52,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:21:52,580 INFO L225 Difference]: With dead ends: 722 [2025-03-04 09:21:52,580 INFO L226 Difference]: Without dead ends: 720 [2025-03-04 09:21:52,581 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 09:21:52,583 INFO L435 NwaCegarLoop]: 788 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:21:52,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 788 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:21:52,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2025-03-04 09:21:52,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 720. [2025-03-04 09:21:52,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 404 states have (on average 1.9851485148514851) internal successors, (802), 715 states have internal predecessors, (802), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:21:52,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 808 transitions. [2025-03-04 09:21:52,658 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 808 transitions. Word has length 5 [2025-03-04 09:21:52,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:21:52,659 INFO L471 AbstractCegarLoop]: Abstraction has 720 states and 808 transitions. [2025-03-04 09:21:52,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2025-03-04 09:21:52,659 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 808 transitions. [2025-03-04 09:21:52,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-04 09:21:52,659 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:21:52,659 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-04 09:21:52,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 09:21:52,660 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr318REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:21:52,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:21:52,660 INFO L85 PathProgramCache]: Analyzing trace with hash 864568519, now seen corresponding path program 1 times [2025-03-04 09:21:52,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:21:52,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679013605] [2025-03-04 09:21:52,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:21:52,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:21:52,666 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-04 09:21:52,673 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-04 09:21:52,673 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:21:52,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:21:52,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:21:52,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:21:52,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679013605] [2025-03-04 09:21:52,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679013605] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:21:52,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:21:52,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:21:52,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756884463] [2025-03-04 09:21:52,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:21:52,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:21:52,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:21:52,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:21:52,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:21:52,735 INFO L87 Difference]: Start difference. First operand 720 states and 808 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2025-03-04 09:21:53,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:21:53,160 INFO L93 Difference]: Finished difference Result 672 states and 761 transitions. [2025-03-04 09:21:53,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:21:53,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2025-03-04 09:21:53,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:21:53,163 INFO L225 Difference]: With dead ends: 672 [2025-03-04 09:21:53,163 INFO L226 Difference]: Without dead ends: 672 [2025-03-04 09:21:53,163 INFO L434 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 [2025-03-04 09:21:53,164 INFO L435 NwaCegarLoop]: 427 mSDtfsCounter, 674 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:21:53,164 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [677 Valid, 436 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-04 09:21:53,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2025-03-04 09:21:53,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 671. [2025-03-04 09:21:53,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 404 states have (on average 1.863861386138614) internal successors, (753), 666 states have internal predecessors, (753), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:21:53,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 759 transitions. [2025-03-04 09:21:53,176 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 759 transitions. Word has length 5 [2025-03-04 09:21:53,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:21:53,176 INFO L471 AbstractCegarLoop]: Abstraction has 671 states and 759 transitions. [2025-03-04 09:21:53,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2025-03-04 09:21:53,176 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 759 transitions. [2025-03-04 09:21:53,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-04 09:21:53,176 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:21:53,176 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-04 09:21:53,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 09:21:53,177 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr319REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:21:53,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:21:53,177 INFO L85 PathProgramCache]: Analyzing trace with hash 864568520, now seen corresponding path program 1 times [2025-03-04 09:21:53,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:21:53,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797905870] [2025-03-04 09:21:53,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:21:53,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:21:53,183 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-04 09:21:53,185 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-04 09:21:53,186 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:21:53,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:21:53,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:21:53,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:21:53,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797905870] [2025-03-04 09:21:53,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797905870] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:21:53,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:21:53,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:21:53,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796256163] [2025-03-04 09:21:53,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:21:53,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:21:53,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:21:53,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:21:53,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:21:53,229 INFO L87 Difference]: Start difference. First operand 671 states and 759 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2025-03-04 09:21:53,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:21:53,628 INFO L93 Difference]: Finished difference Result 747 states and 841 transitions. [2025-03-04 09:21:53,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:21:53,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2025-03-04 09:21:53,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:21:53,631 INFO L225 Difference]: With dead ends: 747 [2025-03-04 09:21:53,631 INFO L226 Difference]: Without dead ends: 747 [2025-03-04 09:21:53,631 INFO L434 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 [2025-03-04 09:21:53,632 INFO L435 NwaCegarLoop]: 606 mSDtfsCounter, 413 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:21:53,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 793 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-04 09:21:53,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2025-03-04 09:21:53,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 700. [2025-03-04 09:21:53,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 444 states have (on average 1.8490990990990992) internal successors, (821), 695 states have internal predecessors, (821), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:21:53,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 827 transitions. [2025-03-04 09:21:53,643 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 827 transitions. Word has length 5 [2025-03-04 09:21:53,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:21:53,643 INFO L471 AbstractCegarLoop]: Abstraction has 700 states and 827 transitions. [2025-03-04 09:21:53,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2025-03-04 09:21:53,643 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 827 transitions. [2025-03-04 09:21:53,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-03-04 09:21:53,644 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:21:53,644 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-03-04 09:21:53,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 09:21:53,644 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:21:53,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:21:53,644 INFO L85 PathProgramCache]: Analyzing trace with hash 863731421, now seen corresponding path program 1 times [2025-03-04 09:21:53,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:21:53,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918770302] [2025-03-04 09:21:53,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:21:53,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:21:53,651 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-04 09:21:53,653 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-04 09:21:53,653 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:21:53,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:21:53,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:21:53,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:21:53,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918770302] [2025-03-04 09:21:53,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918770302] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:21:53,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:21:53,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:21:53,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836294008] [2025-03-04 09:21:53,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:21:53,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:21:53,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:21:53,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:21:53,674 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:21:53,674 INFO L87 Difference]: Start difference. First operand 700 states and 827 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2025-03-04 09:21:53,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:21:53,735 INFO L93 Difference]: Finished difference Result 1378 states and 1631 transitions. [2025-03-04 09:21:53,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:21:53,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2025-03-04 09:21:53,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:21:53,739 INFO L225 Difference]: With dead ends: 1378 [2025-03-04 09:21:53,739 INFO L226 Difference]: Without dead ends: 1378 [2025-03-04 09:21:53,739 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:21:53,740 INFO L435 NwaCegarLoop]: 947 mSDtfsCounter, 718 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:21:53,740 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 1668 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:21:53,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2025-03-04 09:21:53,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 701. [2025-03-04 09:21:53,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 445 states have (on average 1.847191011235955) internal successors, (822), 696 states have internal predecessors, (822), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:21:53,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 828 transitions. [2025-03-04 09:21:53,758 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 828 transitions. Word has length 5 [2025-03-04 09:21:53,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:21:53,758 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 828 transitions. [2025-03-04 09:21:53,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2025-03-04 09:21:53,758 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 828 transitions. [2025-03-04 09:21:53,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-04 09:21:53,759 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:21:53,759 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:21:53,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 09:21:53,759 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr312REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:21:53,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:21:53,759 INFO L85 PathProgramCache]: Analyzing trace with hash -413060841, now seen corresponding path program 1 times [2025-03-04 09:21:53,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:21:53,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267565698] [2025-03-04 09:21:53,760 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:21:53,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:21:53,766 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-04 09:21:53,771 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 09:21:53,772 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:21:53,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:21:53,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:21:53,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:21:53,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267565698] [2025-03-04 09:21:53,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267565698] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:21:53,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:21:53,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:21:53,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752885634] [2025-03-04 09:21:53,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:21:53,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:21:53,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:21:53,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:21:53,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:21:53,829 INFO L87 Difference]: Start difference. First operand 701 states and 828 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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) [2025-03-04 09:21:54,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:21:54,285 INFO L93 Difference]: Finished difference Result 727 states and 881 transitions. [2025-03-04 09:21:54,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:21:54,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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 14 [2025-03-04 09:21:54,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:21:54,288 INFO L225 Difference]: With dead ends: 727 [2025-03-04 09:21:54,288 INFO L226 Difference]: Without dead ends: 727 [2025-03-04 09:21:54,288 INFO L434 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 [2025-03-04 09:21:54,289 INFO L435 NwaCegarLoop]: 402 mSDtfsCounter, 938 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:21:54,289 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 685 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-04 09:21:54,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2025-03-04 09:21:54,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 678. [2025-03-04 09:21:54,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 445 states have (on average 1.7955056179775282) internal successors, (799), 673 states have internal predecessors, (799), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:21:54,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 805 transitions. [2025-03-04 09:21:54,298 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 805 transitions. Word has length 14 [2025-03-04 09:21:54,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:21:54,298 INFO L471 AbstractCegarLoop]: Abstraction has 678 states and 805 transitions. [2025-03-04 09:21:54,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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) [2025-03-04 09:21:54,299 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 805 transitions. [2025-03-04 09:21:54,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-04 09:21:54,299 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:21:54,299 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:21:54,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 09:21:54,300 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr313REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:21:54,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:21:54,301 INFO L85 PathProgramCache]: Analyzing trace with hash -413060840, now seen corresponding path program 1 times [2025-03-04 09:21:54,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:21:54,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327651597] [2025-03-04 09:21:54,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:21:54,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:21:54,311 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-04 09:21:54,322 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 09:21:54,326 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:21:54,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:21:54,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:21:54,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:21:54,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327651597] [2025-03-04 09:21:54,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327651597] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:21:54,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:21:54,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:21:54,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443861137] [2025-03-04 09:21:54,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:21:54,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:21:54,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:21:54,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:21:54,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:21:54,464 INFO L87 Difference]: Start difference. First operand 678 states and 805 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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) [2025-03-04 09:21:54,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:21:54,930 INFO L93 Difference]: Finished difference Result 827 states and 1021 transitions. [2025-03-04 09:21:54,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:21:54,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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 14 [2025-03-04 09:21:54,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:21:54,933 INFO L225 Difference]: With dead ends: 827 [2025-03-04 09:21:54,933 INFO L226 Difference]: Without dead ends: 827 [2025-03-04 09:21:54,933 INFO L434 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 [2025-03-04 09:21:54,934 INFO L435 NwaCegarLoop]: 535 mSDtfsCounter, 873 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:21:54,934 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [875 Valid, 1046 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-04 09:21:54,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2025-03-04 09:21:54,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 680. [2025-03-04 09:21:54,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 462 states have (on average 1.6753246753246753) internal successors, (774), 675 states have internal predecessors, (774), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:21:54,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 780 transitions. [2025-03-04 09:21:54,945 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 780 transitions. Word has length 14 [2025-03-04 09:21:54,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:21:54,945 INFO L471 AbstractCegarLoop]: Abstraction has 680 states and 780 transitions. [2025-03-04 09:21:54,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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) [2025-03-04 09:21:54,946 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 780 transitions. [2025-03-04 09:21:54,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-03-04 09:21:54,947 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:21:54,947 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:21:54,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 09:21:54,947 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr313REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:21:54,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:21:54,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1496352508, now seen corresponding path program 1 times [2025-03-04 09:21:54,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:21:54,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412233543] [2025-03-04 09:21:54,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:21:54,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:21:54,962 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-03-04 09:21:55,002 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-03-04 09:21:55,004 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:21:55,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:21:55,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 09:21:55,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:21:55,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412233543] [2025-03-04 09:21:55,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412233543] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:21:55,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:21:55,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:21:55,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036279729] [2025-03-04 09:21:55,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:21:55,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:21:55,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:21:55,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:21:55,125 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:21:55,125 INFO L87 Difference]: Start difference. First operand 680 states and 780 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2025-03-04 09:21:55,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:21:55,156 INFO L93 Difference]: Finished difference Result 537 states and 597 transitions. [2025-03-04 09:21:55,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:21:55,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2025-03-04 09:21:55,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:21:55,158 INFO L225 Difference]: With dead ends: 537 [2025-03-04 09:21:55,158 INFO L226 Difference]: Without dead ends: 537 [2025-03-04 09:21:55,158 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:21:55,158 INFO L435 NwaCegarLoop]: 572 mSDtfsCounter, 50 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:21:55,159 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 1101 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:21:55,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2025-03-04 09:21:55,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2025-03-04 09:21:55,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 342 states have (on average 1.7280701754385965) internal successors, (591), 532 states have internal predecessors, (591), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:21:55,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 597 transitions. [2025-03-04 09:21:55,166 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 597 transitions. Word has length 51 [2025-03-04 09:21:55,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:21:55,166 INFO L471 AbstractCegarLoop]: Abstraction has 537 states and 597 transitions. [2025-03-04 09:21:55,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2025-03-04 09:21:55,166 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 597 transitions. [2025-03-04 09:21:55,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-03-04 09:21:55,167 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:21:55,167 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:21:55,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-04 09:21:55,167 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr260REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:21:55,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:21:55,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1163163272, now seen corresponding path program 1 times [2025-03-04 09:21:55,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:21:55,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947047479] [2025-03-04 09:21:55,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:21:55,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:21:55,179 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-03-04 09:21:55,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-03-04 09:21:55,186 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:21:55,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:21:55,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:21:55,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:21:55,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947047479] [2025-03-04 09:21:55,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947047479] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:21:55,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:21:55,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:21:55,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899975917] [2025-03-04 09:21:55,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:21:55,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:21:55,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:21:55,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:21:55,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:21:55,267 INFO L87 Difference]: Start difference. First operand 537 states and 597 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2025-03-04 09:21:55,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:21:55,352 INFO L93 Difference]: Finished difference Result 550 states and 606 transitions. [2025-03-04 09:21:55,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:21:55,353 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 63 [2025-03-04 09:21:55,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:21:55,356 INFO L225 Difference]: With dead ends: 550 [2025-03-04 09:21:55,356 INFO L226 Difference]: Without dead ends: 550 [2025-03-04 09:21:55,356 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:21:55,356 INFO L435 NwaCegarLoop]: 564 mSDtfsCounter, 56 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1619 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:21:55,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 1619 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 09:21:55,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2025-03-04 09:21:55,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 549. [2025-03-04 09:21:55,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 354 states have (on average 1.692090395480226) internal successors, (599), 544 states have internal predecessors, (599), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:21:55,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 605 transitions. [2025-03-04 09:21:55,365 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 605 transitions. Word has length 63 [2025-03-04 09:21:55,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:21:55,366 INFO L471 AbstractCegarLoop]: Abstraction has 549 states and 605 transitions. [2025-03-04 09:21:55,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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) [2025-03-04 09:21:55,366 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 605 transitions. [2025-03-04 09:21:55,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-03-04 09:21:55,369 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:21:55,369 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:21:55,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-04 09:21:55,369 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr260REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:21:55,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:21:55,369 INFO L85 PathProgramCache]: Analyzing trace with hash 451827280, now seen corresponding path program 1 times [2025-03-04 09:21:55,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:21:55,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917889717] [2025-03-04 09:21:55,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:21:55,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:21:55,380 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-03-04 09:21:55,391 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-03-04 09:21:55,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:21:55,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:21:55,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:21:55,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:21:55,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917889717] [2025-03-04 09:21:55,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917889717] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:21:55,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:21:55,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:21:55,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148632311] [2025-03-04 09:21:55,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:21:55,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:21:55,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:21:55,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:21:55,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:21:55,466 INFO L87 Difference]: Start difference. First operand 549 states and 605 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2025-03-04 09:21:55,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:21:55,516 INFO L93 Difference]: Finished difference Result 669 states and 759 transitions. [2025-03-04 09:21:55,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:21:55,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 71 [2025-03-04 09:21:55,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:21:55,519 INFO L225 Difference]: With dead ends: 669 [2025-03-04 09:21:55,519 INFO L226 Difference]: Without dead ends: 669 [2025-03-04 09:21:55,519 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:21:55,520 INFO L435 NwaCegarLoop]: 578 mSDtfsCounter, 75 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:21:55,520 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 1128 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 09:21:55,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2025-03-04 09:21:55,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 669. [2025-03-04 09:21:55,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 474 states have (on average 1.5886075949367089) internal successors, (753), 664 states have internal predecessors, (753), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:21:55,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 759 transitions. [2025-03-04 09:21:55,528 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 759 transitions. Word has length 71 [2025-03-04 09:21:55,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:21:55,529 INFO L471 AbstractCegarLoop]: Abstraction has 669 states and 759 transitions. [2025-03-04 09:21:55,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2025-03-04 09:21:55,529 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 759 transitions. [2025-03-04 09:21:55,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-04 09:21:55,530 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:21:55,530 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:21:55,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-04 09:21:55,530 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr224REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:21:55,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:21:55,531 INFO L85 PathProgramCache]: Analyzing trace with hash -879591588, now seen corresponding path program 1 times [2025-03-04 09:21:55,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:21:55,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419189011] [2025-03-04 09:21:55,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:21:55,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:21:55,544 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-04 09:21:55,553 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-04 09:21:55,554 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:21:55,554 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:21:55,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:21:55,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:21:55,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419189011] [2025-03-04 09:21:55,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419189011] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:21:55,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:21:55,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:21:55,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652764036] [2025-03-04 09:21:55,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:21:55,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:21:55,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:21:55,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:21:55,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:21:55,774 INFO L87 Difference]: Start difference. First operand 669 states and 759 transitions. Second operand has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 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) [2025-03-04 09:21:56,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:21:56,192 INFO L93 Difference]: Finished difference Result 668 states and 758 transitions. [2025-03-04 09:21:56,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:21:56,193 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 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 79 [2025-03-04 09:21:56,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:21:56,197 INFO L225 Difference]: With dead ends: 668 [2025-03-04 09:21:56,197 INFO L226 Difference]: Without dead ends: 668 [2025-03-04 09:21:56,197 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:21:56,197 INFO L435 NwaCegarLoop]: 574 mSDtfsCounter, 2 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:21:56,198 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1566 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-04 09:21:56,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2025-03-04 09:21:56,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 668. [2025-03-04 09:21:56,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 474 states have (on average 1.5864978902953586) internal successors, (752), 663 states have internal predecessors, (752), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:21:56,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 758 transitions. [2025-03-04 09:21:56,221 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 758 transitions. Word has length 79 [2025-03-04 09:21:56,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:21:56,222 INFO L471 AbstractCegarLoop]: Abstraction has 668 states and 758 transitions. [2025-03-04 09:21:56,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 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) [2025-03-04 09:21:56,222 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 758 transitions. [2025-03-04 09:21:56,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-04 09:21:56,223 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:21:56,223 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:21:56,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-04 09:21:56,223 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr225REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:21:56,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:21:56,224 INFO L85 PathProgramCache]: Analyzing trace with hash -879591587, now seen corresponding path program 1 times [2025-03-04 09:21:56,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:21:56,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650142623] [2025-03-04 09:21:56,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:21:56,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:21:56,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-04 09:21:56,266 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-04 09:21:56,268 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:21:56,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:21:56,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:21:56,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:21:56,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650142623] [2025-03-04 09:21:56,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650142623] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:21:56,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:21:56,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:21:56,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802752749] [2025-03-04 09:21:56,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:21:56,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:21:56,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:21:56,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:21:56,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:21:56,574 INFO L87 Difference]: Start difference. First operand 668 states and 758 transitions. Second operand has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 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) [2025-03-04 09:21:57,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:21:57,053 INFO L93 Difference]: Finished difference Result 667 states and 757 transitions. [2025-03-04 09:21:57,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:21:57,053 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 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 79 [2025-03-04 09:21:57,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:21:57,056 INFO L225 Difference]: With dead ends: 667 [2025-03-04 09:21:57,056 INFO L226 Difference]: Without dead ends: 667 [2025-03-04 09:21:57,057 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:21:57,057 INFO L435 NwaCegarLoop]: 574 mSDtfsCounter, 1 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-04 09:21:57,058 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1529 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-04 09:21:57,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2025-03-04 09:21:57,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 667. [2025-03-04 09:21:57,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 473 states have (on average 1.587737843551797) internal successors, (751), 662 states have internal predecessors, (751), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:21:57,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 757 transitions. [2025-03-04 09:21:57,067 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 757 transitions. Word has length 79 [2025-03-04 09:21:57,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:21:57,068 INFO L471 AbstractCegarLoop]: Abstraction has 667 states and 757 transitions. [2025-03-04 09:21:57,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 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) [2025-03-04 09:21:57,068 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 757 transitions. [2025-03-04 09:21:57,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-04 09:21:57,068 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:21:57,068 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:21:57,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-04 09:21:57,069 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr220REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:21:57,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:21:57,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1524715047, now seen corresponding path program 1 times [2025-03-04 09:21:57,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:21:57,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912615702] [2025-03-04 09:21:57,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:21:57,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:21:57,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-04 09:21:57,098 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-04 09:21:57,099 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:21:57,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:21:57,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:21:57,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:21:57,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912615702] [2025-03-04 09:21:57,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912615702] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:21:57,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:21:57,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 09:21:57,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657355394] [2025-03-04 09:21:57,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:21:57,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 09:21:57,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:21:57,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 09:21:57,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 09:21:57,258 INFO L87 Difference]: Start difference. First operand 667 states and 757 transitions. Second operand has 7 states, 5 states have (on average 17.0) internal successors, (85), 6 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:21:57,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:21:57,745 INFO L93 Difference]: Finished difference Result 679 states and 772 transitions. [2025-03-04 09:21:57,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 09:21:57,746 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 17.0) internal successors, (85), 6 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 87 [2025-03-04 09:21:57,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:21:57,750 INFO L225 Difference]: With dead ends: 679 [2025-03-04 09:21:57,750 INFO L226 Difference]: Without dead ends: 679 [2025-03-04 09:21:57,750 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-04 09:21:57,750 INFO L435 NwaCegarLoop]: 566 mSDtfsCounter, 6 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2111 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-04 09:21:57,750 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2111 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-04 09:21:57,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2025-03-04 09:21:57,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 673. [2025-03-04 09:21:57,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 478 states have (on average 1.5857740585774058) internal successors, (758), 667 states have internal predecessors, (758), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-04 09:21:57,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 767 transitions. [2025-03-04 09:21:57,760 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 767 transitions. Word has length 87 [2025-03-04 09:21:57,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:21:57,760 INFO L471 AbstractCegarLoop]: Abstraction has 673 states and 767 transitions. [2025-03-04 09:21:57,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 17.0) internal successors, (85), 6 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:21:57,760 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 767 transitions. [2025-03-04 09:21:57,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-03-04 09:21:57,761 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:21:57,761 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:21:57,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-04 09:21:57,761 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr221REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:21:57,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:21:57,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1524715046, now seen corresponding path program 1 times [2025-03-04 09:21:57,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:21:57,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122830148] [2025-03-04 09:21:57,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:21:57,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:21:57,785 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 87 statements into 1 equivalence classes. [2025-03-04 09:21:57,798 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 87 of 87 statements. [2025-03-04 09:21:57,798 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:21:57,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:21:58,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:21:58,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:21:58,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122830148] [2025-03-04 09:21:58,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122830148] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:21:58,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:21:58,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 09:21:58,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971019397] [2025-03-04 09:21:58,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:21:58,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 09:21:58,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:21:58,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 09:21:58,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:21:58,159 INFO L87 Difference]: Start difference. First operand 673 states and 767 transitions. Second operand has 6 states, 5 states have (on average 17.0) internal successors, (85), 6 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:21:58,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:21:58,696 INFO L93 Difference]: Finished difference Result 673 states and 766 transitions. [2025-03-04 09:21:58,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:21:58,697 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.0) internal successors, (85), 6 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 87 [2025-03-04 09:21:58,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:21:58,699 INFO L225 Difference]: With dead ends: 673 [2025-03-04 09:21:58,699 INFO L226 Difference]: Without dead ends: 673 [2025-03-04 09:21:58,699 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-04 09:21:58,700 INFO L435 NwaCegarLoop]: 570 mSDtfsCounter, 1 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-04 09:21:58,700 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1990 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 949 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-04 09:21:58,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2025-03-04 09:21:58,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 673. [2025-03-04 09:21:58,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 478 states have (on average 1.5836820083682008) internal successors, (757), 667 states have internal predecessors, (757), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-04 09:21:58,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 766 transitions. [2025-03-04 09:21:58,721 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 766 transitions. Word has length 87 [2025-03-04 09:21:58,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:21:58,721 INFO L471 AbstractCegarLoop]: Abstraction has 673 states and 766 transitions. [2025-03-04 09:21:58,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.0) internal successors, (85), 6 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:21:58,721 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 766 transitions. [2025-03-04 09:21:58,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-04 09:21:58,722 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:21:58,723 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:21:58,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-04 09:21:58,723 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr220REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:21:58,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:21:58,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1794683101, now seen corresponding path program 1 times [2025-03-04 09:21:58,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:21:58,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263215657] [2025-03-04 09:21:58,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:21:58,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:21:58,741 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-04 09:21:58,754 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-04 09:21:58,754 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:21:58,754 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:21:59,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:21:59,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:21:59,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263215657] [2025-03-04 09:21:59,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263215657] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:21:59,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010689666] [2025-03-04 09:21:59,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:21:59,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:21:59,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:21:59,083 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) [2025-03-04 09:21:59,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 09:21:59,179 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-04 09:21:59,220 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-04 09:21:59,221 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:21:59,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:21:59,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-04 09:21:59,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:21:59,246 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 [2025-03-04 09:21:59,345 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-04 09:21:59,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-03-04 09:21:59,353 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 19 treesize of output 1 [2025-03-04 09:21:59,400 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:21:59,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-04 09:21:59,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-03-04 09:21:59,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:21:59,427 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:21:59,470 INFO L349 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2025-03-04 09:21:59,470 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 21 treesize of output 20 [2025-03-04 09:21:59,478 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_443 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~mem51#1.base| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_443) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8)))) is different from false [2025-03-04 09:21:59,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010689666] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:21:59,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:21:59,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 13 [2025-03-04 09:21:59,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373435355] [2025-03-04 09:21:59,483 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:21:59,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-04 09:21:59,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:21:59,484 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-04 09:21:59,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=151, Unknown=1, NotChecked=24, Total=210 [2025-03-04 09:21:59,484 INFO L87 Difference]: Start difference. First operand 673 states and 766 transitions. Second operand has 14 states, 12 states have (on average 10.583333333333334) internal successors, (127), 13 states have internal predecessors, (127), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:22:00,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:22:00,842 INFO L93 Difference]: Finished difference Result 672 states and 765 transitions. [2025-03-04 09:22:00,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-04 09:22:00,842 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 10.583333333333334) internal successors, (127), 13 states have internal predecessors, (127), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 88 [2025-03-04 09:22:00,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:22:00,844 INFO L225 Difference]: With dead ends: 672 [2025-03-04 09:22:00,844 INFO L226 Difference]: Without dead ends: 672 [2025-03-04 09:22:00,844 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=342, Unknown=1, NotChecked=38, Total=462 [2025-03-04 09:22:00,845 INFO L435 NwaCegarLoop]: 322 mSDtfsCounter, 486 mSDsluCounter, 3004 mSDsCounter, 0 mSdLazyCounter, 3084 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 3326 SdHoareTripleChecker+Invalid, 3098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:22:00,845 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 3326 Invalid, 3098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3084 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-04 09:22:00,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2025-03-04 09:22:00,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 672. [2025-03-04 09:22:00,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 478 states have (on average 1.5815899581589958) internal successors, (756), 666 states have internal predecessors, (756), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-04 09:22:00,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 765 transitions. [2025-03-04 09:22:00,852 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 765 transitions. Word has length 88 [2025-03-04 09:22:00,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:22:00,852 INFO L471 AbstractCegarLoop]: Abstraction has 672 states and 765 transitions. [2025-03-04 09:22:00,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 10.583333333333334) internal successors, (127), 13 states have internal predecessors, (127), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:22:00,852 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 765 transitions. [2025-03-04 09:22:00,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-04 09:22:00,853 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:22:00,853 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:22:00,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-04 09:22:01,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-04 09:22:01,057 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr221REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:22:01,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:22:01,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1794683100, now seen corresponding path program 1 times [2025-03-04 09:22:01,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:22:01,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876443711] [2025-03-04 09:22:01,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:01,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:22:01,071 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-04 09:22:01,084 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-04 09:22:01,084 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:01,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:01,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:22:01,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:22:01,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876443711] [2025-03-04 09:22:01,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876443711] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:22:01,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072911606] [2025-03-04 09:22:01,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:01,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:22:01,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:22:01,524 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) [2025-03-04 09:22:01,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 09:22:01,615 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-04 09:22:01,651 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-04 09:22:01,652 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:01,652 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:01,656 INFO L256 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-03-04 09:22:01,659 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:22:01,662 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 [2025-03-04 09:22:01,738 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-04 09:22:01,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-03-04 09:22:01,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-04 09:22:01,761 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 19 treesize of output 1 [2025-03-04 09:22:01,894 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:22:01,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 65 [2025-03-04 09:22:01,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 30 [2025-03-04 09:22:01,934 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 39 treesize of output 21 [2025-03-04 09:22:01,937 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 32 treesize of output 14 [2025-03-04 09:22:01,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:22:01,953 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:22:02,044 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 09:22:02,045 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 48 treesize of output 52 [2025-03-04 09:22:02,081 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_prenex_1 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem51#1.base| v_prenex_1) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 16))) (forall ((v_ArrVal_571 (Array Int Int))) (< (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_571) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (+ |c_ULTIMATE.start_main_#t~mem51#1.offset| 25))) (forall ((v_ArrVal_572 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_572) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) |c_ULTIMATE.start_main_#t~mem51#1.base|)))) is different from false [2025-03-04 09:22:02,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072911606] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:22:02,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:22:02,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2025-03-04 09:22:02,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460763024] [2025-03-04 09:22:02,086 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:22:02,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-04 09:22:02,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:22:02,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-04 09:22:02,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=361, Unknown=1, NotChecked=38, Total=462 [2025-03-04 09:22:02,087 INFO L87 Difference]: Start difference. First operand 672 states and 765 transitions. Second operand has 19 states, 16 states have (on average 8.6875) internal successors, (139), 19 states have internal predecessors, (139), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 09:22:03,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:22:03,544 INFO L93 Difference]: Finished difference Result 671 states and 764 transitions. [2025-03-04 09:22:03,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-04 09:22:03,545 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 8.6875) internal successors, (139), 19 states have internal predecessors, (139), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 88 [2025-03-04 09:22:03,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:22:03,546 INFO L225 Difference]: With dead ends: 671 [2025-03-04 09:22:03,546 INFO L226 Difference]: Without dead ends: 671 [2025-03-04 09:22:03,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=505, Unknown=1, NotChecked=46, Total=650 [2025-03-04 09:22:03,547 INFO L435 NwaCegarLoop]: 321 mSDtfsCounter, 528 mSDsluCounter, 2957 mSDsCounter, 0 mSdLazyCounter, 3751 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 3278 SdHoareTripleChecker+Invalid, 3769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 3751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:22:03,547 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 3278 Invalid, 3769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 3751 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-04 09:22:03,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2025-03-04 09:22:03,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 665. [2025-03-04 09:22:03,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 473 states have (on average 1.5835095137420718) internal successors, (749), 660 states have internal predecessors, (749), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:22:03,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 755 transitions. [2025-03-04 09:22:03,555 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 755 transitions. Word has length 88 [2025-03-04 09:22:03,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:22:03,555 INFO L471 AbstractCegarLoop]: Abstraction has 665 states and 755 transitions. [2025-03-04 09:22:03,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 8.6875) internal successors, (139), 19 states have internal predecessors, (139), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 09:22:03,556 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 755 transitions. [2025-03-04 09:22:03,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-04 09:22:03,556 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:22:03,556 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:22:03,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-04 09:22:03,760 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,SelfDestructingSolverStorable14 [2025-03-04 09:22:03,760 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr216REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:22:03,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:22:03,760 INFO L85 PathProgramCache]: Analyzing trace with hash 788597119, now seen corresponding path program 1 times [2025-03-04 09:22:03,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:22:03,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730963484] [2025-03-04 09:22:03,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:03,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:22:03,776 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-04 09:22:03,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-04 09:22:03,801 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:03,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:04,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:22:04,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:22:04,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730963484] [2025-03-04 09:22:04,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730963484] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:22:04,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:22:04,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-04 09:22:04,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006610516] [2025-03-04 09:22:04,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:22:04,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-04 09:22:04,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:22:04,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-04 09:22:04,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2025-03-04 09:22:04,087 INFO L87 Difference]: Start difference. First operand 665 states and 755 transitions. Second operand has 14 states, 12 states have (on average 7.333333333333333) internal successors, (88), 13 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:22:04,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:22:04,985 INFO L93 Difference]: Finished difference Result 675 states and 768 transitions. [2025-03-04 09:22:04,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-04 09:22:04,986 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.333333333333333) internal successors, (88), 13 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 90 [2025-03-04 09:22:04,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:22:04,988 INFO L225 Difference]: With dead ends: 675 [2025-03-04 09:22:04,988 INFO L226 Difference]: Without dead ends: 675 [2025-03-04 09:22:04,988 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2025-03-04 09:22:04,988 INFO L435 NwaCegarLoop]: 321 mSDtfsCounter, 534 mSDsluCounter, 2684 mSDsCounter, 0 mSdLazyCounter, 2787 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 3005 SdHoareTripleChecker+Invalid, 2800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-03-04 09:22:04,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 3005 Invalid, 2800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2787 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-03-04 09:22:04,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2025-03-04 09:22:04,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 674. [2025-03-04 09:22:04,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 481 states have (on average 1.5779625779625779) internal successors, (759), 668 states have internal predecessors, (759), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-04 09:22:04,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 768 transitions. [2025-03-04 09:22:04,995 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 768 transitions. Word has length 90 [2025-03-04 09:22:04,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:22:04,995 INFO L471 AbstractCegarLoop]: Abstraction has 674 states and 768 transitions. [2025-03-04 09:22:04,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.333333333333333) internal successors, (88), 13 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:22:04,996 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 768 transitions. [2025-03-04 09:22:04,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-04 09:22:04,996 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:22:04,996 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:22:04,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-04 09:22:04,996 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr217REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:22:04,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:22:04,997 INFO L85 PathProgramCache]: Analyzing trace with hash 788597120, now seen corresponding path program 1 times [2025-03-04 09:22:04,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:22:04,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932932337] [2025-03-04 09:22:04,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:04,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:22:05,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-04 09:22:05,023 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-04 09:22:05,023 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:05,023 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:05,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:22:05,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:22:05,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932932337] [2025-03-04 09:22:05,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932932337] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:22:05,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:22:05,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-04 09:22:05,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512683021] [2025-03-04 09:22:05,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:22:05,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-04 09:22:05,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:22:05,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-04 09:22:05,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-03-04 09:22:05,416 INFO L87 Difference]: Start difference. First operand 674 states and 768 transitions. Second operand has 11 states, 10 states have (on average 8.8) internal successors, (88), 11 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:22:06,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:22:06,190 INFO L93 Difference]: Finished difference Result 674 states and 767 transitions. [2025-03-04 09:22:06,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 09:22:06,190 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.8) internal successors, (88), 11 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 90 [2025-03-04 09:22:06,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:22:06,192 INFO L225 Difference]: With dead ends: 674 [2025-03-04 09:22:06,192 INFO L226 Difference]: Without dead ends: 674 [2025-03-04 09:22:06,192 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2025-03-04 09:22:06,192 INFO L435 NwaCegarLoop]: 325 mSDtfsCounter, 554 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 1917 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 1929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-04 09:22:06,193 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 1615 Invalid, 1929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1917 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-04 09:22:06,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2025-03-04 09:22:06,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 674. [2025-03-04 09:22:06,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 481 states have (on average 1.5758835758835759) internal successors, (758), 668 states have internal predecessors, (758), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-04 09:22:06,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 767 transitions. [2025-03-04 09:22:06,201 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 767 transitions. Word has length 90 [2025-03-04 09:22:06,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:22:06,202 INFO L471 AbstractCegarLoop]: Abstraction has 674 states and 767 transitions. [2025-03-04 09:22:06,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.8) internal successors, (88), 11 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:22:06,202 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 767 transitions. [2025-03-04 09:22:06,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-04 09:22:06,202 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:22:06,202 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:22:06,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-04 09:22:06,203 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr216REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:22:06,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:22:06,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1650921483, now seen corresponding path program 1 times [2025-03-04 09:22:06,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:22:06,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666834683] [2025-03-04 09:22:06,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:06,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:22:06,220 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-04 09:22:06,233 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-04 09:22:06,233 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:06,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:06,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:22:06,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:22:06,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666834683] [2025-03-04 09:22:06,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666834683] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:22:06,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948230282] [2025-03-04 09:22:06,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:06,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:22:06,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:22:06,495 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) [2025-03-04 09:22:06,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 09:22:06,591 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-04 09:22:06,629 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-04 09:22:06,630 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:06,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:06,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-04 09:22:06,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:22:06,640 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 [2025-03-04 09:22:06,715 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-04 09:22:06,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-03-04 09:22:06,721 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 19 treesize of output 1 [2025-03-04 09:22:06,781 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:22:06,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-04 09:22:06,823 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:22:06,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-04 09:22:06,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-03-04 09:22:06,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:22:06,834 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:22:06,907 INFO L349 Elim1Store]: treesize reduction 5, result has 82.8 percent of original size [2025-03-04 09:22:06,907 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 33 treesize of output 32 [2025-03-04 09:22:06,912 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_821 (Array Int Int)) (v_ArrVal_824 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~mem51#1.base| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_824))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_821)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2025-03-04 09:22:06,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948230282] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:22:06,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:22:06,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 16 [2025-03-04 09:22:06,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639772250] [2025-03-04 09:22:06,913 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:22:06,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-04 09:22:06,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:22:06,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-04 09:22:06,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=280, Unknown=11, NotChecked=34, Total=380 [2025-03-04 09:22:06,914 INFO L87 Difference]: Start difference. First operand 674 states and 767 transitions. Second operand has 17 states, 15 states have (on average 9.2) internal successors, (138), 17 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:22:07,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:22:07,942 INFO L93 Difference]: Finished difference Result 673 states and 766 transitions. [2025-03-04 09:22:07,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-04 09:22:07,942 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 9.2) internal successors, (138), 17 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 91 [2025-03-04 09:22:07,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:22:07,944 INFO L225 Difference]: With dead ends: 673 [2025-03-04 09:22:07,944 INFO L226 Difference]: Without dead ends: 673 [2025-03-04 09:22:07,944 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=533, Unknown=11, NotChecked=48, Total=702 [2025-03-04 09:22:07,944 INFO L435 NwaCegarLoop]: 321 mSDtfsCounter, 526 mSDsluCounter, 2734 mSDsCounter, 0 mSdLazyCounter, 2796 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 3055 SdHoareTripleChecker+Invalid, 2812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:22:07,944 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 3055 Invalid, 2812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2796 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-04 09:22:07,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2025-03-04 09:22:07,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 673. [2025-03-04 09:22:07,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 481 states have (on average 1.5738045738045738) internal successors, (757), 667 states have internal predecessors, (757), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-04 09:22:07,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 766 transitions. [2025-03-04 09:22:07,951 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 766 transitions. Word has length 91 [2025-03-04 09:22:07,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:22:07,951 INFO L471 AbstractCegarLoop]: Abstraction has 673 states and 766 transitions. [2025-03-04 09:22:07,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 9.2) internal successors, (138), 17 states have internal predecessors, (138), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:22:07,951 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 766 transitions. [2025-03-04 09:22:07,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-03-04 09:22:07,952 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:22:07,952 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:22:07,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-04 09:22:08,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-04 09:22:08,152 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr217REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:22:08,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:22:08,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1650921482, now seen corresponding path program 1 times [2025-03-04 09:22:08,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:22:08,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718130065] [2025-03-04 09:22:08,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:08,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:22:08,180 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-04 09:22:08,199 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-04 09:22:08,199 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:08,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:08,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:22:08,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:22:08,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718130065] [2025-03-04 09:22:08,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718130065] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:22:08,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988450531] [2025-03-04 09:22:08,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:08,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:22:08,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:22:08,619 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) [2025-03-04 09:22:08,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 09:22:08,716 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 91 statements into 1 equivalence classes. [2025-03-04 09:22:08,760 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 91 of 91 statements. [2025-03-04 09:22:08,760 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:08,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:08,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-03-04 09:22:08,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:22:08,767 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 [2025-03-04 09:22:08,839 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-04 09:22:08,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-03-04 09:22:08,858 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 19 treesize of output 1 [2025-03-04 09:22:08,860 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 19 treesize of output 1 [2025-03-04 09:22:08,976 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:22:08,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 65 [2025-03-04 09:22:08,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 30 [2025-03-04 09:22:09,042 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:22:09,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 65 [2025-03-04 09:22:09,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 30 [2025-03-04 09:22:09,062 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 39 treesize of output 21 [2025-03-04 09:22:09,064 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 32 treesize of output 14 [2025-03-04 09:22:09,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:22:09,080 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:22:09,131 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_960 (Array Int Int)) (v_ArrVal_961 (Array Int Int))) (<= (+ 8 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_961) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_960) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_961 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_961) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 4))))) is different from false [2025-03-04 09:22:09,143 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_960 (Array Int Int)) (v_ArrVal_961 (Array Int Int))) (<= (+ 8 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_961) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_960) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_961 (Array Int Int))) (<= 0 (+ 4 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_961) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))) is different from false [2025-03-04 09:22:09,196 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 09:22:09,197 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 84 treesize of output 88 [2025-03-04 09:22:09,237 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_966 (Array Int Int)) (v_ArrVal_967 (Array Int Int)) (v_ArrVal_961 (Array Int Int))) (<= 0 (+ 4 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_967) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_966) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_961) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_prenex_2 (Array Int Int)) (v_ArrVal_960 (Array Int Int))) (= (select (select (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem51#1.base| v_prenex_2))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_960)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) |c_ULTIMATE.start_main_#t~mem51#1.base|)) (forall ((v_prenex_2 (Array Int Int)) (v_prenex_3 (Array Int Int)) (v_prenex_4 (Array Int Int))) (< (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem51#1.base| v_prenex_3) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem51#1.base| v_prenex_2) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_prenex_4) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (+ |c_ULTIMATE.start_main_#t~mem51#1.offset| 37))))) is different from false [2025-03-04 09:22:09,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988450531] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:22:09,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:22:09,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2025-03-04 09:22:09,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956265219] [2025-03-04 09:22:09,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:22:09,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-04 09:22:09,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:22:09,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-04 09:22:09,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=437, Unknown=3, NotChecked=132, Total=650 [2025-03-04 09:22:09,240 INFO L87 Difference]: Start difference. First operand 673 states and 766 transitions. Second operand has 21 states, 18 states have (on average 8.055555555555555) internal successors, (145), 21 states have internal predecessors, (145), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 09:22:10,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:22:10,715 INFO L93 Difference]: Finished difference Result 672 states and 765 transitions. [2025-03-04 09:22:10,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-04 09:22:10,715 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 8.055555555555555) internal successors, (145), 21 states have internal predecessors, (145), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 91 [2025-03-04 09:22:10,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:22:10,717 INFO L225 Difference]: With dead ends: 672 [2025-03-04 09:22:10,717 INFO L226 Difference]: Without dead ends: 672 [2025-03-04 09:22:10,717 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=640, Unknown=3, NotChecked=162, Total=930 [2025-03-04 09:22:10,717 INFO L435 NwaCegarLoop]: 320 mSDtfsCounter, 503 mSDsluCounter, 3133 mSDsCounter, 0 mSdLazyCounter, 4051 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 3453 SdHoareTripleChecker+Invalid, 4069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 4051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-03-04 09:22:10,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 3453 Invalid, 4069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 4051 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-03-04 09:22:10,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2025-03-04 09:22:10,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 663. [2025-03-04 09:22:10,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 473 states have (on average 1.5792811839323466) internal successors, (747), 658 states have internal predecessors, (747), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:22:10,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 753 transitions. [2025-03-04 09:22:10,723 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 753 transitions. Word has length 91 [2025-03-04 09:22:10,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:22:10,724 INFO L471 AbstractCegarLoop]: Abstraction has 663 states and 753 transitions. [2025-03-04 09:22:10,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 8.055555555555555) internal successors, (145), 21 states have internal predecessors, (145), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 09:22:10,724 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 753 transitions. [2025-03-04 09:22:10,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-04 09:22:10,724 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:22:10,724 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:22:10,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-04 09:22:10,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:22:10,925 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr212REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:22:10,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:22:10,925 INFO L85 PathProgramCache]: Analyzing trace with hash -373904142, now seen corresponding path program 1 times [2025-03-04 09:22:10,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:22:10,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680325036] [2025-03-04 09:22:10,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:10,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:22:10,937 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-04 09:22:10,947 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-04 09:22:10,947 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:10,948 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:11,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:22:11,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:22:11,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680325036] [2025-03-04 09:22:11,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680325036] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:22:11,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:22:11,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-04 09:22:11,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740062230] [2025-03-04 09:22:11,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:22:11,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-04 09:22:11,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:22:11,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-04 09:22:11,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2025-03-04 09:22:11,256 INFO L87 Difference]: Start difference. First operand 663 states and 753 transitions. Second operand has 15 states, 13 states have (on average 7.0) internal successors, (91), 14 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:22:12,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:22:12,312 INFO L93 Difference]: Finished difference Result 676 states and 769 transitions. [2025-03-04 09:22:12,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-04 09:22:12,313 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.0) internal successors, (91), 14 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2025-03-04 09:22:12,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:22:12,314 INFO L225 Difference]: With dead ends: 676 [2025-03-04 09:22:12,314 INFO L226 Difference]: Without dead ends: 676 [2025-03-04 09:22:12,314 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2025-03-04 09:22:12,315 INFO L435 NwaCegarLoop]: 320 mSDtfsCounter, 537 mSDsluCounter, 2984 mSDsCounter, 0 mSdLazyCounter, 3048 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 3304 SdHoareTripleChecker+Invalid, 3061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:22:12,315 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 3304 Invalid, 3061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3048 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-04 09:22:12,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2025-03-04 09:22:12,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 675. [2025-03-04 09:22:12,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 484 states have (on average 1.5702479338842976) internal successors, (760), 669 states have internal predecessors, (760), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-04 09:22:12,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 769 transitions. [2025-03-04 09:22:12,326 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 769 transitions. Word has length 93 [2025-03-04 09:22:12,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:22:12,326 INFO L471 AbstractCegarLoop]: Abstraction has 675 states and 769 transitions. [2025-03-04 09:22:12,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.0) internal successors, (91), 14 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:22:12,326 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 769 transitions. [2025-03-04 09:22:12,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-04 09:22:12,328 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:22:12,328 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:22:12,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-04 09:22:12,328 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr213REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:22:12,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:22:12,329 INFO L85 PathProgramCache]: Analyzing trace with hash -373904141, now seen corresponding path program 1 times [2025-03-04 09:22:12,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:22:12,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606753652] [2025-03-04 09:22:12,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:12,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:22:12,341 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-04 09:22:12,353 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-04 09:22:12,353 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:12,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:12,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:22:12,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:22:12,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606753652] [2025-03-04 09:22:12,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606753652] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:22:12,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:22:12,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-04 09:22:12,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734095479] [2025-03-04 09:22:12,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:22:12,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-04 09:22:12,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:22:12,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-04 09:22:12,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-03-04 09:22:12,765 INFO L87 Difference]: Start difference. First operand 675 states and 769 transitions. Second operand has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 12 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:22:13,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:22:13,566 INFO L93 Difference]: Finished difference Result 675 states and 768 transitions. [2025-03-04 09:22:13,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 09:22:13,567 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 12 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2025-03-04 09:22:13,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:22:13,569 INFO L225 Difference]: With dead ends: 675 [2025-03-04 09:22:13,569 INFO L226 Difference]: Without dead ends: 675 [2025-03-04 09:22:13,569 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2025-03-04 09:22:13,569 INFO L435 NwaCegarLoop]: 324 mSDtfsCounter, 517 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 1919 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 1931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-03-04 09:22:13,569 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 1617 Invalid, 1931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1919 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-03-04 09:22:13,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2025-03-04 09:22:13,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 675. [2025-03-04 09:22:13,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 484 states have (on average 1.5681818181818181) internal successors, (759), 669 states have internal predecessors, (759), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-04 09:22:13,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 768 transitions. [2025-03-04 09:22:13,577 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 768 transitions. Word has length 93 [2025-03-04 09:22:13,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:22:13,577 INFO L471 AbstractCegarLoop]: Abstraction has 675 states and 768 transitions. [2025-03-04 09:22:13,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 12 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:22:13,577 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 768 transitions. [2025-03-04 09:22:13,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-04 09:22:13,578 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:22:13,578 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:22:13,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-04 09:22:13,578 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr212REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:22:13,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:22:13,578 INFO L85 PathProgramCache]: Analyzing trace with hash -930960708, now seen corresponding path program 1 times [2025-03-04 09:22:13,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:22:13,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740448381] [2025-03-04 09:22:13,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:13,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:22:13,591 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-04 09:22:13,601 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-04 09:22:13,602 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:13,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:13,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:22:13,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:22:13,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740448381] [2025-03-04 09:22:13,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740448381] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:22:13,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867746648] [2025-03-04 09:22:13,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:13,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:22:13,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:22:13,915 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) [2025-03-04 09:22:13,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 09:22:14,023 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-04 09:22:14,063 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-04 09:22:14,063 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:14,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:14,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-03-04 09:22:14,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:22:14,076 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 [2025-03-04 09:22:14,155 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-04 09:22:14,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-03-04 09:22:14,159 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 19 treesize of output 1 [2025-03-04 09:22:14,220 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:22:14,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-04 09:22:14,269 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:22:14,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-04 09:22:14,305 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:22:14,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-04 09:22:14,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-03-04 09:22:14,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:22:14,320 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:22:14,328 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1241 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1241) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2025-03-04 09:22:14,360 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1241 (Array Int Int)) (v_ArrVal_1240 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1240))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1241)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2025-03-04 09:22:14,407 INFO L349 Elim1Store]: treesize reduction 5, result has 90.6 percent of original size [2025-03-04 09:22:14,407 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 57 treesize of output 56 [2025-03-04 09:22:14,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867746648] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:22:14,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:22:14,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 18 [2025-03-04 09:22:14,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083748663] [2025-03-04 09:22:14,438 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:22:14,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-04 09:22:14,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:22:14,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-04 09:22:14,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=380, Unknown=18, NotChecked=82, Total=552 [2025-03-04 09:22:14,440 INFO L87 Difference]: Start difference. First operand 675 states and 768 transitions. Second operand has 19 states, 17 states have (on average 8.411764705882353) internal successors, (143), 19 states have internal predecessors, (143), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:22:15,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:22:15,441 INFO L93 Difference]: Finished difference Result 674 states and 767 transitions. [2025-03-04 09:22:15,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-04 09:22:15,444 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 8.411764705882353) internal successors, (143), 19 states have internal predecessors, (143), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 94 [2025-03-04 09:22:15,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:22:15,445 INFO L225 Difference]: With dead ends: 674 [2025-03-04 09:22:15,446 INFO L226 Difference]: Without dead ends: 674 [2025-03-04 09:22:15,446 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=715, Unknown=19, NotChecked=114, Total=992 [2025-03-04 09:22:15,448 INFO L435 NwaCegarLoop]: 320 mSDtfsCounter, 501 mSDsluCounter, 3035 mSDsCounter, 0 mSdLazyCounter, 3079 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 3355 SdHoareTripleChecker+Invalid, 3092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:22:15,448 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 3355 Invalid, 3092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3079 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-04 09:22:15,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2025-03-04 09:22:15,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 674. [2025-03-04 09:22:15,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 484 states have (on average 1.5661157024793388) internal successors, (758), 668 states have internal predecessors, (758), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2025-03-04 09:22:15,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 767 transitions. [2025-03-04 09:22:15,454 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 767 transitions. Word has length 94 [2025-03-04 09:22:15,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:22:15,454 INFO L471 AbstractCegarLoop]: Abstraction has 674 states and 767 transitions. [2025-03-04 09:22:15,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 8.411764705882353) internal successors, (143), 19 states have internal predecessors, (143), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:22:15,455 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 767 transitions. [2025-03-04 09:22:15,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-03-04 09:22:15,455 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:22:15,455 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:22:15,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-04 09:22:15,655 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,SelfDestructingSolverStorable21 [2025-03-04 09:22:15,656 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr213REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:22:15,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:22:15,656 INFO L85 PathProgramCache]: Analyzing trace with hash -930960707, now seen corresponding path program 1 times [2025-03-04 09:22:15,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:22:15,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652191979] [2025-03-04 09:22:15,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:15,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:22:15,668 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-04 09:22:15,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-04 09:22:15,679 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:15,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:16,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:22:16,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:22:16,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652191979] [2025-03-04 09:22:16,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652191979] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:22:16,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647331162] [2025-03-04 09:22:16,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:16,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:22:16,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:22:16,146 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) [2025-03-04 09:22:16,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 09:22:16,261 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-03-04 09:22:16,300 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-03-04 09:22:16,300 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:16,300 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:16,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-03-04 09:22:16,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:22:16,306 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 [2025-03-04 09:22:16,362 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 [2025-03-04 09:22:16,366 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-04 09:22:16,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-03-04 09:22:16,371 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 [2025-03-04 09:22:16,375 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 19 treesize of output 1 [2025-03-04 09:22:16,408 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 22 treesize of output 10 [2025-03-04 09:22:16,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-03-04 09:22:16,485 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:22:16,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-03-04 09:22:16,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-04 09:22:16,527 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:22:16,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-03-04 09:22:16,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-04 09:22:16,563 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:22:16,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-03-04 09:22:16,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-04 09:22:16,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-03-04 09:22:16,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-03-04 09:22:16,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:22:16,584 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:22:16,624 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1396 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1396) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 8))) (forall ((v_ArrVal_1396 (Array Int Int)) (v_ArrVal_1395 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1396) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 12) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1395) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2025-03-04 09:22:16,631 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1396 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1396) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 8))) (forall ((v_ArrVal_1396 (Array Int Int)) (v_ArrVal_1395 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1396) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 12) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1395) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))) is different from false [2025-03-04 09:22:16,641 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1396 (Array Int Int)) (v_ArrVal_1395 (Array Int Int)) (v_ArrVal_1394 (Array Int Int)) (v_ArrVal_1393 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1393))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ 12 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1394) .cse0 v_ArrVal_1396) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_1395) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_1396 (Array Int Int)) (v_ArrVal_1394 (Array Int Int)) (v_ArrVal_1393 (Array Int Int))) (<= 0 (+ 8 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1394) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1393) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1396) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2025-03-04 09:22:16,650 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1396 (Array Int Int)) (v_ArrVal_1394 (Array Int Int)) (v_ArrVal_1393 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1394) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1393) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1396) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 8))) (forall ((v_ArrVal_1396 (Array Int Int)) (v_ArrVal_1395 (Array Int Int)) (v_ArrVal_1394 (Array Int Int)) (v_ArrVal_1393 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1393))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1394) .cse2 v_ArrVal_1396) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 12) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_1395) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))))) is different from false [2025-03-04 09:22:16,691 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1402 (Array Int Int)) (v_ArrVal_1401 (Array Int Int)) (v_ArrVal_1396 (Array Int Int)) (v_ArrVal_1394 (Array Int Int)) (v_ArrVal_1393 (Array Int Int))) (<= 0 (+ (select (select (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_1402))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_1401) .cse0 v_ArrVal_1394) (select (select (store .cse1 .cse0 v_ArrVal_1393) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_1396))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 8))) (forall ((v_ArrVal_1402 (Array Int Int)) (v_ArrVal_1401 (Array Int Int)) (v_ArrVal_1396 (Array Int Int)) (v_ArrVal_1395 (Array Int Int)) (v_ArrVal_1394 (Array Int Int)) (v_ArrVal_1393 (Array Int Int))) (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_1402))) (let ((.cse3 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse5 (store .cse6 .cse3 v_ArrVal_1393))) (let ((.cse4 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_1401) .cse3 v_ArrVal_1394) .cse4 v_ArrVal_1396) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 12) (select |c_#length| (select (select (store .cse5 .cse4 v_ArrVal_1395) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))))) is different from false [2025-03-04 09:22:16,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647331162] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:22:16,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:22:16,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 17 [2025-03-04 09:22:16,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128326960] [2025-03-04 09:22:16,693 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:22:16,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-04 09:22:16,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:22:16,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-04 09:22:16,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=321, Unknown=5, NotChecked=200, Total=600 [2025-03-04 09:22:16,694 INFO L87 Difference]: Start difference. First operand 674 states and 767 transitions. Second operand has 18 states, 16 states have (on average 8.875) internal successors, (142), 18 states have internal predecessors, (142), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:22:17,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:22:17,923 INFO L93 Difference]: Finished difference Result 681 states and 774 transitions. [2025-03-04 09:22:17,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-04 09:22:17,923 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 8.875) internal successors, (142), 18 states have internal predecessors, (142), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 94 [2025-03-04 09:22:17,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:22:17,925 INFO L225 Difference]: With dead ends: 681 [2025-03-04 09:22:17,925 INFO L226 Difference]: Without dead ends: 681 [2025-03-04 09:22:17,931 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=546, Unknown=5, NotChecked=260, Total=930 [2025-03-04 09:22:17,931 INFO L435 NwaCegarLoop]: 322 mSDtfsCounter, 500 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 2845 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 2325 SdHoareTripleChecker+Invalid, 2861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:22:17,931 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 2325 Invalid, 2861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2845 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-04 09:22:17,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2025-03-04 09:22:17,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 666. [2025-03-04 09:22:17,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 477 states have (on average 1.5723270440251573) internal successors, (750), 660 states have internal predecessors, (750), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:22:17,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 756 transitions. [2025-03-04 09:22:17,937 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 756 transitions. Word has length 94 [2025-03-04 09:22:17,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:22:17,937 INFO L471 AbstractCegarLoop]: Abstraction has 666 states and 756 transitions. [2025-03-04 09:22:17,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 8.875) internal successors, (142), 18 states have internal predecessors, (142), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:22:17,937 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 756 transitions. [2025-03-04 09:22:17,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-04 09:22:17,937 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:22:17,937 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:22:17,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-04 09:22:18,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:22:18,142 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr208REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:22:18,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:22:18,142 INFO L85 PathProgramCache]: Analyzing trace with hash -2127669896, now seen corresponding path program 1 times [2025-03-04 09:22:18,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:22:18,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025737847] [2025-03-04 09:22:18,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:18,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:22:18,154 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-04 09:22:18,163 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-04 09:22:18,164 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:18,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:18,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:22:18,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:22:18,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025737847] [2025-03-04 09:22:18,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025737847] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:22:18,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:22:18,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2025-03-04 09:22:18,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552939625] [2025-03-04 09:22:18,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:22:18,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-04 09:22:18,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:22:18,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-04 09:22:18,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2025-03-04 09:22:18,515 INFO L87 Difference]: Start difference. First operand 666 states and 756 transitions. Second operand has 16 states, 14 states have (on average 6.714285714285714) internal successors, (94), 15 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:22:19,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:22:19,574 INFO L93 Difference]: Finished difference Result 685 states and 778 transitions. [2025-03-04 09:22:19,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-04 09:22:19,575 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 6.714285714285714) internal successors, (94), 15 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2025-03-04 09:22:19,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:22:19,576 INFO L225 Difference]: With dead ends: 685 [2025-03-04 09:22:19,576 INFO L226 Difference]: Without dead ends: 685 [2025-03-04 09:22:19,577 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2025-03-04 09:22:19,577 INFO L435 NwaCegarLoop]: 319 mSDtfsCounter, 536 mSDsluCounter, 3280 mSDsCounter, 0 mSdLazyCounter, 3331 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 3599 SdHoareTripleChecker+Invalid, 3344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:22:19,577 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 3599 Invalid, 3344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3331 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-04 09:22:19,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2025-03-04 09:22:19,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 681. [2025-03-04 09:22:19,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 491 states have (on average 1.560081466395112) internal successors, (766), 674 states have internal predecessors, (766), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-04 09:22:19,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 773 transitions. [2025-03-04 09:22:19,583 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 773 transitions. Word has length 96 [2025-03-04 09:22:19,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:22:19,584 INFO L471 AbstractCegarLoop]: Abstraction has 681 states and 773 transitions. [2025-03-04 09:22:19,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 6.714285714285714) internal successors, (94), 15 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:22:19,584 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 773 transitions. [2025-03-04 09:22:19,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-04 09:22:19,584 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:22:19,584 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:22:19,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-04 09:22:19,585 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr209REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:22:19,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:22:19,585 INFO L85 PathProgramCache]: Analyzing trace with hash -2127669895, now seen corresponding path program 1 times [2025-03-04 09:22:19,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:22:19,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256767113] [2025-03-04 09:22:19,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:19,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:22:19,601 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-04 09:22:19,610 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-04 09:22:19,611 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:19,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:20,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:22:20,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:22:20,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256767113] [2025-03-04 09:22:20,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256767113] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:22:20,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:22:20,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-04 09:22:20,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510467321] [2025-03-04 09:22:20,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:22:20,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-04 09:22:20,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:22:20,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-04 09:22:20,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2025-03-04 09:22:20,091 INFO L87 Difference]: Start difference. First operand 681 states and 773 transitions. Second operand has 13 states, 12 states have (on average 7.833333333333333) internal successors, (94), 13 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:22:21,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:22:21,119 INFO L93 Difference]: Finished difference Result 684 states and 777 transitions. [2025-03-04 09:22:21,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-04 09:22:21,120 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.833333333333333) internal successors, (94), 13 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2025-03-04 09:22:21,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:22:21,122 INFO L225 Difference]: With dead ends: 684 [2025-03-04 09:22:21,122 INFO L226 Difference]: Without dead ends: 684 [2025-03-04 09:22:21,122 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2025-03-04 09:22:21,122 INFO L435 NwaCegarLoop]: 323 mSDtfsCounter, 556 mSDsluCounter, 1744 mSDsCounter, 0 mSdLazyCounter, 2617 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 2067 SdHoareTripleChecker+Invalid, 2629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:22:21,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 2067 Invalid, 2629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2617 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-04 09:22:21,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2025-03-04 09:22:21,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 681. [2025-03-04 09:22:21,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 491 states have (on average 1.5580448065173116) internal successors, (765), 674 states have internal predecessors, (765), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-04 09:22:21,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 772 transitions. [2025-03-04 09:22:21,129 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 772 transitions. Word has length 96 [2025-03-04 09:22:21,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:22:21,129 INFO L471 AbstractCegarLoop]: Abstraction has 681 states and 772 transitions. [2025-03-04 09:22:21,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.833333333333333) internal successors, (94), 13 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:22:21,129 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 772 transitions. [2025-03-04 09:22:21,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-04 09:22:21,129 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:22:21,129 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:22:21,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-03-04 09:22:21,129 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr208REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:22:21,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:22:21,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1646195858, now seen corresponding path program 1 times [2025-03-04 09:22:21,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:22:21,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611278974] [2025-03-04 09:22:21,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:21,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:22:21,143 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-04 09:22:21,152 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-04 09:22:21,153 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:21,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:21,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:22:21,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:22:21,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611278974] [2025-03-04 09:22:21,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611278974] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:22:21,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838010907] [2025-03-04 09:22:21,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:21,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:22:21,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:22:21,475 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) [2025-03-04 09:22:21,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-04 09:22:21,597 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-04 09:22:21,632 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-04 09:22:21,632 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:21,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:21,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-04 09:22:21,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:22:21,638 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 [2025-03-04 09:22:21,692 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-04 09:22:21,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-03-04 09:22:21,695 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 19 treesize of output 1 [2025-03-04 09:22:21,743 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:22:21,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-04 09:22:21,771 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:22:21,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-04 09:22:21,797 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:22:21,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-04 09:22:21,823 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:22:21,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-04 09:22:21,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-03-04 09:22:21,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:22:21,832 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:22:21,877 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1700 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1700))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1701)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2025-03-04 09:22:21,905 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1700 (Array Int Int)) (v_ArrVal_1699 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1699))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1700)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1701)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2025-03-04 09:22:26,053 INFO L349 Elim1Store]: treesize reduction 5, result has 95.0 percent of original size [2025-03-04 09:22:26,053 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 105 treesize of output 104 [2025-03-04 09:22:26,060 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1701 (Array Int Int)) (v_ArrVal_1700 (Array Int Int)) (v_ArrVal_1699 (Array Int Int)) (v_ArrVal_1704 (Array Int Int))) (= (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_1704))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1699)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1700)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1701)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem51#1.base|)) is different from false [2025-03-04 09:22:26,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838010907] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:22:26,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:22:26,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 20 [2025-03-04 09:22:26,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014183880] [2025-03-04 09:22:26,061 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:22:26,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-03-04 09:22:26,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:22:26,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-03-04 09:22:26,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=475, Unknown=40, NotChecked=144, Total=756 [2025-03-04 09:22:26,062 INFO L87 Difference]: Start difference. First operand 681 states and 772 transitions. Second operand has 21 states, 19 states have (on average 7.7894736842105265) internal successors, (148), 21 states have internal predecessors, (148), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:22:27,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:22:27,450 INFO L93 Difference]: Finished difference Result 683 states and 776 transitions. [2025-03-04 09:22:27,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-04 09:22:27,450 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 7.7894736842105265) internal successors, (148), 21 states have internal predecessors, (148), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 97 [2025-03-04 09:22:27,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:22:27,452 INFO L225 Difference]: With dead ends: 683 [2025-03-04 09:22:27,452 INFO L226 Difference]: Without dead ends: 683 [2025-03-04 09:22:27,452 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=186, Invalid=903, Unknown=45, NotChecked=198, Total=1332 [2025-03-04 09:22:27,453 INFO L435 NwaCegarLoop]: 319 mSDtfsCounter, 518 mSDsluCounter, 3010 mSDsCounter, 0 mSdLazyCounter, 3072 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 3329 SdHoareTripleChecker+Invalid, 3088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:22:27,453 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 3329 Invalid, 3088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 3072 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-04 09:22:27,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2025-03-04 09:22:27,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 680. [2025-03-04 09:22:27,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 491 states have (on average 1.5560081466395113) internal successors, (764), 673 states have internal predecessors, (764), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-04 09:22:27,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 771 transitions. [2025-03-04 09:22:27,459 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 771 transitions. Word has length 97 [2025-03-04 09:22:27,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:22:27,459 INFO L471 AbstractCegarLoop]: Abstraction has 680 states and 771 transitions. [2025-03-04 09:22:27,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 7.7894736842105265) internal successors, (148), 21 states have internal predecessors, (148), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:22:27,459 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 771 transitions. [2025-03-04 09:22:27,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-03-04 09:22:27,459 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:22:27,459 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:22:27,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-04 09:22:27,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:22:27,660 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr209REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:22:27,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:22:27,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1646195857, now seen corresponding path program 1 times [2025-03-04 09:22:27,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:22:27,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667071420] [2025-03-04 09:22:27,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:27,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:22:27,673 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-04 09:22:27,686 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-04 09:22:27,686 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:27,686 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:28,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:22:28,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:22:28,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667071420] [2025-03-04 09:22:28,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667071420] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:22:28,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747785455] [2025-03-04 09:22:28,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:28,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:22:28,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:22:28,216 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) [2025-03-04 09:22:28,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-04 09:22:28,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 97 statements into 1 equivalence classes. [2025-03-04 09:22:28,367 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 97 of 97 statements. [2025-03-04 09:22:28,367 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:28,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:28,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-03-04 09:22:28,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:22:28,374 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 [2025-03-04 09:22:28,440 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 [2025-03-04 09:22:28,445 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-04 09:22:28,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-03-04 09:22:28,464 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 19 treesize of output 1 [2025-03-04 09:22:28,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2025-03-04 09:22:28,521 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 22 treesize of output 10 [2025-03-04 09:22:28,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-03-04 09:22:28,593 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:22:28,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-03-04 09:22:28,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-04 09:22:28,651 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:22:28,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-03-04 09:22:28,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-04 09:22:28,695 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:22:28,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-03-04 09:22:28,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-04 09:22:28,755 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:22:28,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-03-04 09:22:28,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 22 [2025-03-04 09:22:28,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-03-04 09:22:28,797 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 30 treesize of output 12 [2025-03-04 09:22:28,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:22:28,817 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:22:28,966 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1868 (Array Int Int))) (let ((.cse0 (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1868))) (or (< (+ (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 8) 0) (forall ((v_ArrVal_1867 (Array Int Int)) (v_ArrVal_1870 (Array Int Int))) (<= 0 (+ (select (select (store .cse0 (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1867) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1870) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 20)))))) (forall ((v_ArrVal_1868 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1868))) (or (< (+ (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 8) 0) (forall ((v_ArrVal_1867 (Array Int Int)) (v_ArrVal_1870 (Array Int Int)) (v_ArrVal_1869 (Array Int Int))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1867))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ (select (select (store .cse2 .cse3 v_ArrVal_1870) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 24) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_1869) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))))))) is different from false [2025-03-04 09:22:29,093 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1868 (Array Int Int)) (v_ArrVal_1866 (Array Int Int)) (v_ArrVal_1865 (Array Int Int))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1865))) (let ((.cse5 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (let ((.cse0 (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1866) .cse5 v_ArrVal_1868))) (or (< (+ 8 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) 0) (forall ((v_ArrVal_1867 (Array Int Int)) (v_ArrVal_1870 (Array Int Int)) (v_ArrVal_1869 (Array Int Int))) (let ((.cse3 (store .cse4 .cse5 v_ArrVal_1867))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ (select (select (store .cse0 .cse2 v_ArrVal_1870) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 24) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_1869) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))))))) (forall ((v_ArrVal_1868 (Array Int Int)) (v_ArrVal_1866 (Array Int Int)) (v_ArrVal_1865 (Array Int Int))) (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1865))) (let ((.cse8 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (let ((.cse6 (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1866) .cse8 v_ArrVal_1868))) (or (forall ((v_ArrVal_1867 (Array Int Int)) (v_ArrVal_1870 (Array Int Int))) (<= 0 (+ (select (select (store .cse6 (select (select (store .cse7 .cse8 v_ArrVal_1867) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1870) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 20))) (< (+ 8 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) 0)))))))) is different from false [2025-03-04 09:22:29,117 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse4 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (forall ((v_ArrVal_1868 (Array Int Int)) (v_ArrVal_1866 (Array Int Int)) (v_ArrVal_1865 (Array Int Int))) (let ((.cse1 (store |c_#memory_$Pointer$#1.base| .cse4 v_ArrVal_1865))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse0 (store (store |c_#memory_$Pointer$#1.offset| .cse4 v_ArrVal_1866) .cse2 v_ArrVal_1868))) (or (forall ((v_ArrVal_1867 (Array Int Int)) (v_ArrVal_1870 (Array Int Int))) (<= 0 (+ 20 (select (select (store .cse0 (select (select (store .cse1 .cse2 v_ArrVal_1867) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_1870) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))) (< (+ (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 8) 0)))))) (forall ((v_ArrVal_1868 (Array Int Int)) (v_ArrVal_1866 (Array Int Int)) (v_ArrVal_1865 (Array Int Int))) (let ((.cse8 (store |c_#memory_$Pointer$#1.base| .cse4 v_ArrVal_1865))) (let ((.cse9 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse5 (store (store |c_#memory_$Pointer$#1.offset| .cse4 v_ArrVal_1866) .cse9 v_ArrVal_1868))) (or (forall ((v_ArrVal_1867 (Array Int Int)) (v_ArrVal_1870 (Array Int Int)) (v_ArrVal_1869 (Array Int Int))) (let ((.cse7 (store .cse8 .cse9 v_ArrVal_1867))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ 24 (select (select (store .cse5 .cse6 v_ArrVal_1870) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse7 .cse6 v_ArrVal_1869) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))) (< (+ (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 8) 0))))))))) is different from false [2025-03-04 09:22:29,183 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1868 (Array Int Int)) (v_ArrVal_1866 (Array Int Int)) (v_ArrVal_1876 (Array Int Int)) (v_ArrVal_1865 (Array Int Int)) (v_ArrVal_1875 (Array Int Int))) (let ((.cse5 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_1876))) (let ((.cse4 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse1 (store .cse5 .cse4 v_ArrVal_1865))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse0 (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_1875) .cse4 v_ArrVal_1866) .cse2 v_ArrVal_1868))) (or (forall ((v_ArrVal_1867 (Array Int Int)) (v_ArrVal_1870 (Array Int Int))) (<= 0 (+ (select (select (store .cse0 (select (select (store .cse1 .cse2 v_ArrVal_1867) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_1870) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 20))) (< (+ (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 8) 0)))))))) (forall ((v_ArrVal_1868 (Array Int Int)) (v_ArrVal_1866 (Array Int Int)) (v_ArrVal_1876 (Array Int Int)) (v_ArrVal_1865 (Array Int Int)) (v_ArrVal_1875 (Array Int Int))) (let ((.cse12 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_1876))) (let ((.cse11 (select (select .cse12 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse9 (store .cse12 .cse11 v_ArrVal_1865))) (let ((.cse10 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_1875) .cse11 v_ArrVal_1866) .cse10 v_ArrVal_1868))) (or (forall ((v_ArrVal_1867 (Array Int Int)) (v_ArrVal_1870 (Array Int Int)) (v_ArrVal_1869 (Array Int Int))) (let ((.cse8 (store .cse9 .cse10 v_ArrVal_1867))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ (select (select (store .cse6 .cse7 v_ArrVal_1870) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 24) (select |c_#length| (select (select (store .cse8 .cse7 v_ArrVal_1869) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))) (< (+ (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 8) 0)))))))))) is different from false [2025-03-04 09:22:29,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747785455] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:22:29,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:22:29,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 24 [2025-03-04 09:22:29,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677875888] [2025-03-04 09:22:29,186 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:22:29,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-04 09:22:29,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:22:29,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-04 09:22:29,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=749, Unknown=10, NotChecked=236, Total=1122 [2025-03-04 09:22:29,187 INFO L87 Difference]: Start difference. First operand 680 states and 771 transitions. Second operand has 25 states, 22 states have (on average 7.136363636363637) internal successors, (157), 25 states have internal predecessors, (157), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 09:22:31,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:22:31,027 INFO L93 Difference]: Finished difference Result 682 states and 775 transitions. [2025-03-04 09:22:31,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-04 09:22:31,028 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 7.136363636363637) internal successors, (157), 25 states have internal predecessors, (157), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 97 [2025-03-04 09:22:31,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:22:31,029 INFO L225 Difference]: With dead ends: 682 [2025-03-04 09:22:31,029 INFO L226 Difference]: Without dead ends: 682 [2025-03-04 09:22:31,030 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=209, Invalid=1129, Unknown=10, NotChecked=292, Total=1640 [2025-03-04 09:22:31,030 INFO L435 NwaCegarLoop]: 321 mSDtfsCounter, 504 mSDsluCounter, 2752 mSDsCounter, 0 mSdLazyCounter, 3939 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 3073 SdHoareTripleChecker+Invalid, 3957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 3939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-04 09:22:31,030 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 3073 Invalid, 3957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 3939 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-04 09:22:31,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2025-03-04 09:22:31,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 664. [2025-03-04 09:22:31,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 477 states have (on average 1.5681341719077568) internal successors, (748), 658 states have internal predecessors, (748), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:22:31,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 754 transitions. [2025-03-04 09:22:31,035 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 754 transitions. Word has length 97 [2025-03-04 09:22:31,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:22:31,035 INFO L471 AbstractCegarLoop]: Abstraction has 664 states and 754 transitions. [2025-03-04 09:22:31,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 7.136363636363637) internal successors, (157), 25 states have internal predecessors, (157), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 09:22:31,035 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 754 transitions. [2025-03-04 09:22:31,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-03-04 09:22:31,035 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:22:31,036 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:22:31,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-04 09:22:31,236 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,SelfDestructingSolverStorable26 [2025-03-04 09:22:31,236 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr204REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:22:31,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:22:31,236 INFO L85 PathProgramCache]: Analyzing trace with hash -279115982, now seen corresponding path program 1 times [2025-03-04 09:22:31,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:22:31,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4801038] [2025-03-04 09:22:31,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:31,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:22:31,249 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-03-04 09:22:31,257 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-03-04 09:22:31,257 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:31,257 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:31,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:22:31,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:22:31,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4801038] [2025-03-04 09:22:31,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4801038] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:22:31,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:22:31,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2025-03-04 09:22:31,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896498792] [2025-03-04 09:22:31,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:22:31,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-04 09:22:31,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:22:31,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-04 09:22:31,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2025-03-04 09:22:31,715 INFO L87 Difference]: Start difference. First operand 664 states and 754 transitions. Second operand has 17 states, 15 states have (on average 6.533333333333333) internal successors, (98), 16 states have internal predecessors, (98), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:22:32,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:22:32,726 INFO L93 Difference]: Finished difference Result 687 states and 780 transitions. [2025-03-04 09:22:32,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-04 09:22:32,727 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.533333333333333) internal successors, (98), 16 states have internal predecessors, (98), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2025-03-04 09:22:32,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:22:32,728 INFO L225 Difference]: With dead ends: 687 [2025-03-04 09:22:32,728 INFO L226 Difference]: Without dead ends: 687 [2025-03-04 09:22:32,728 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2025-03-04 09:22:32,729 INFO L435 NwaCegarLoop]: 318 mSDtfsCounter, 560 mSDsluCounter, 2118 mSDsCounter, 0 mSdLazyCounter, 2287 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 2436 SdHoareTripleChecker+Invalid, 2303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 2287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:22:32,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 2436 Invalid, 2303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 2287 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-04 09:22:32,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2025-03-04 09:22:32,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 683. [2025-03-04 09:22:32,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 495 states have (on average 1.5515151515151515) internal successors, (768), 676 states have internal predecessors, (768), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-04 09:22:32,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 775 transitions. [2025-03-04 09:22:32,735 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 775 transitions. Word has length 100 [2025-03-04 09:22:32,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:22:32,736 INFO L471 AbstractCegarLoop]: Abstraction has 683 states and 775 transitions. [2025-03-04 09:22:32,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.533333333333333) internal successors, (98), 16 states have internal predecessors, (98), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:22:32,736 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 775 transitions. [2025-03-04 09:22:32,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-03-04 09:22:32,736 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:22:32,736 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:22:32,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-04 09:22:32,736 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr205REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:22:32,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:22:32,737 INFO L85 PathProgramCache]: Analyzing trace with hash -279115981, now seen corresponding path program 1 times [2025-03-04 09:22:32,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:22:32,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683332085] [2025-03-04 09:22:32,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:32,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:22:32,750 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-03-04 09:22:32,764 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-03-04 09:22:32,765 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:32,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:33,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:22:33,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:22:33,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683332085] [2025-03-04 09:22:33,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683332085] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:22:33,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:22:33,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-03-04 09:22:33,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052236051] [2025-03-04 09:22:33,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:22:33,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-04 09:22:33,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:22:33,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-04 09:22:33,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2025-03-04 09:22:33,481 INFO L87 Difference]: Start difference. First operand 683 states and 775 transitions. Second operand has 18 states, 16 states have (on average 6.125) internal successors, (98), 17 states have internal predecessors, (98), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:22:34,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:22:34,910 INFO L93 Difference]: Finished difference Result 686 states and 779 transitions. [2025-03-04 09:22:34,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-04 09:22:34,910 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 6.125) internal successors, (98), 17 states have internal predecessors, (98), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2025-03-04 09:22:34,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:22:34,912 INFO L225 Difference]: With dead ends: 686 [2025-03-04 09:22:34,912 INFO L226 Difference]: Without dead ends: 686 [2025-03-04 09:22:34,912 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2025-03-04 09:22:34,912 INFO L435 NwaCegarLoop]: 319 mSDtfsCounter, 538 mSDsluCounter, 2001 mSDsCounter, 0 mSdLazyCounter, 2898 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 2320 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-04 09:22:34,913 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 2320 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2898 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-04 09:22:34,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2025-03-04 09:22:34,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 683. [2025-03-04 09:22:34,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 495 states have (on average 1.5494949494949495) internal successors, (767), 676 states have internal predecessors, (767), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-04 09:22:34,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 774 transitions. [2025-03-04 09:22:34,917 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 774 transitions. Word has length 100 [2025-03-04 09:22:34,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:22:34,918 INFO L471 AbstractCegarLoop]: Abstraction has 683 states and 774 transitions. [2025-03-04 09:22:34,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 6.125) internal successors, (98), 17 states have internal predecessors, (98), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:22:34,918 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 774 transitions. [2025-03-04 09:22:34,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-03-04 09:22:34,918 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:22:34,918 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:22:34,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-03-04 09:22:34,918 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr204REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:22:34,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:22:34,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1731711528, now seen corresponding path program 1 times [2025-03-04 09:22:34,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:22:34,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112821884] [2025-03-04 09:22:34,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:34,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:22:34,933 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-03-04 09:22:34,945 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-03-04 09:22:34,946 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:34,946 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:35,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:22:35,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:22:35,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112821884] [2025-03-04 09:22:35,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112821884] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:22:35,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205723219] [2025-03-04 09:22:35,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:35,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:22:35,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:22:35,441 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) [2025-03-04 09:22:35,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-04 09:22:35,568 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-03-04 09:22:35,608 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-03-04 09:22:35,609 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:35,609 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:35,611 INFO L256 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-03-04 09:22:35,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:22:35,618 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 [2025-03-04 09:22:35,687 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-04 09:22:35,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-03-04 09:22:35,690 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 19 treesize of output 1 [2025-03-04 09:22:35,768 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:22:35,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-04 09:22:35,809 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:22:35,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-04 09:22:35,843 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:22:35,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-04 09:22:35,877 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:22:35,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-04 09:22:35,919 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:22:35,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-03-04 09:22:35,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-03-04 09:22:35,944 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2025-03-04 09:22:35,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2025-03-04 09:22:35,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:22:35,946 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:22:36,503 INFO L349 Elim1Store]: treesize reduction 10, result has 97.5 percent of original size [2025-03-04 09:22:36,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 597 treesize of output 794 [2025-03-04 09:22:36,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205723219] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:22:36,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:22:36,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 23 [2025-03-04 09:22:36,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338046335] [2025-03-04 09:22:36,607 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:22:36,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-04 09:22:36,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:22:36,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-04 09:22:36,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=978, Unknown=58, NotChecked=0, Total=1190 [2025-03-04 09:22:36,608 INFO L87 Difference]: Start difference. First operand 683 states and 774 transitions. Second operand has 24 states, 21 states have (on average 7.380952380952381) internal successors, (155), 24 states have internal predecessors, (155), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 09:22:38,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:22:38,459 INFO L93 Difference]: Finished difference Result 685 states and 778 transitions. [2025-03-04 09:22:38,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-04 09:22:38,459 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 7.380952380952381) internal successors, (155), 24 states have internal predecessors, (155), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 101 [2025-03-04 09:22:38,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:22:38,461 INFO L225 Difference]: With dead ends: 685 [2025-03-04 09:22:38,461 INFO L226 Difference]: Without dead ends: 685 [2025-03-04 09:22:38,461 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=278, Invalid=1644, Unknown=58, NotChecked=0, Total=1980 [2025-03-04 09:22:38,462 INFO L435 NwaCegarLoop]: 318 mSDtfsCounter, 497 mSDsluCounter, 3897 mSDsCounter, 0 mSdLazyCounter, 3894 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 4215 SdHoareTripleChecker+Invalid, 3912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 3894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2025-03-04 09:22:38,462 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 4215 Invalid, 3912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 3894 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2025-03-04 09:22:38,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2025-03-04 09:22:38,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 682. [2025-03-04 09:22:38,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 495 states have (on average 1.5474747474747474) internal successors, (766), 675 states have internal predecessors, (766), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-04 09:22:38,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 773 transitions. [2025-03-04 09:22:38,467 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 773 transitions. Word has length 101 [2025-03-04 09:22:38,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:22:38,467 INFO L471 AbstractCegarLoop]: Abstraction has 682 states and 773 transitions. [2025-03-04 09:22:38,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 7.380952380952381) internal successors, (155), 24 states have internal predecessors, (155), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 09:22:38,467 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 773 transitions. [2025-03-04 09:22:38,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-03-04 09:22:38,468 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:22:38,468 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:22:38,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-04 09:22:38,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:22:38,668 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr205REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:22:38,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:22:38,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1731711529, now seen corresponding path program 1 times [2025-03-04 09:22:38,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:22:38,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441076469] [2025-03-04 09:22:38,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:38,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:22:38,682 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-03-04 09:22:38,692 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-03-04 09:22:38,692 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:38,692 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:39,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:22:39,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:22:39,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441076469] [2025-03-04 09:22:39,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441076469] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:22:39,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808336401] [2025-03-04 09:22:39,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:22:39,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:22:39,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:22:39,491 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) [2025-03-04 09:22:39,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-04 09:22:39,626 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-03-04 09:22:39,667 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-03-04 09:22:39,667 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:22:39,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:22:39,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 57 conjuncts are in the unsatisfiable core [2025-03-04 09:22:39,683 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:22:39,686 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 [2025-03-04 09:22:39,772 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 [2025-03-04 09:22:39,778 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-04 09:22:39,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-03-04 09:22:39,785 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 19 treesize of output 1 [2025-03-04 09:22:39,789 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 [2025-03-04 09:22:39,825 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 22 treesize of output 10 [2025-03-04 09:22:39,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-03-04 09:22:39,909 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:22:39,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-03-04 09:22:39,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-04 09:22:39,971 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:22:39,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2025-03-04 09:22:39,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-04 09:22:40,025 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:22:40,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2025-03-04 09:22:40,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-04 09:22:40,081 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:22:40,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2025-03-04 09:22:40,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-04 09:22:40,142 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:22:40,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2025-03-04 09:22:40,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-03-04 09:22:40,159 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 42 treesize of output 18 [2025-03-04 09:22:40,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-03-04 09:22:40,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-03-04 09:22:40,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-03-04 09:22:40,174 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-04 09:22:40,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-03-04 09:22:40,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:22:40,176 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:22:40,434 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (or (forall ((|v_ULTIMATE.start_main_#t~malloc58#1.base_7| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc58#1.base_7|) 0))) (forall ((v_ArrVal_2395 (Array Int Int)) (v_ArrVal_2394 (Array Int Int)) (v_ArrVal_2393 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_2393) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_2394) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_2395) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 1)))) (forall ((|v_ULTIMATE.start_main_#t~malloc58#1.base_7| Int) (v_ArrVal_2396 (Array Int Int)) (v_ArrVal_2395 (Array Int Int)) (v_ArrVal_2394 (Array Int Int)) (v_ArrVal_2393 (Array Int Int))) (or (forall ((v_ArrVal_2397 Int)) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_2394))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_2393) .cse1 v_ArrVal_2395) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 4) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc58#1.base_7| v_ArrVal_2397) (select (select (store .cse2 .cse1 v_ArrVal_2396) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc58#1.base_7|) 0)))))) is different from false [2025-03-04 09:22:40,454 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((|v_ULTIMATE.start_main_#t~malloc58#1.base_7| Int) (v_ArrVal_2396 (Array Int Int)) (v_ArrVal_2395 (Array Int Int)) (v_ArrVal_2394 (Array Int Int)) (v_ArrVal_2393 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc58#1.base_7|) 0)) (forall ((v_ArrVal_2397 Int)) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_2394))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2393) .cse1 v_ArrVal_2395) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 4) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc58#1.base_7| v_ArrVal_2397) (select (select (store .cse3 .cse1 v_ArrVal_2396) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (or (forall ((v_ArrVal_2395 (Array Int Int)) (v_ArrVal_2394 (Array Int Int)) (v_ArrVal_2393 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2393) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_2394) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_2395) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 1))) (forall ((|v_ULTIMATE.start_main_#t~malloc58#1.base_7| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc58#1.base_7|) 0))))))) is different from false [2025-03-04 09:22:40,500 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 09:22:40,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 172 treesize of output 190 [2025-03-04 09:22:40,577 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_2391 (Array Int Int)) (v_ArrVal_2395 (Array Int Int)) (v_ArrVal_2394 (Array Int Int)) (v_ArrVal_2393 (Array Int Int)) (v_ArrVal_2392 (Array Int Int))) (< 0 (+ (select (select (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2391))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2392) .cse0 v_ArrVal_2393) (select (select (store .cse1 .cse0 v_ArrVal_2394) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_2395))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 1))) (forall ((v_prenex_23 Int)) (or (forall ((v_ArrVal_2397 Int) (v_prenex_25 (Array Int Int)) (v_prenex_24 (Array Int Int)) (v_prenex_22 (Array Int Int)) (v_ArrVal_2396 (Array Int Int)) (v_prenex_27 (Array Int Int)) (v_prenex_26 (Array Int Int))) (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_prenex_22))) (let ((.cse3 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse5 (store .cse6 .cse3 v_prenex_25))) (let ((.cse4 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (< (+ 3 (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_prenex_27) .cse3 v_prenex_26) .cse4 v_prenex_24) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select (store |c_#length| v_prenex_23 v_ArrVal_2397) (select (select (store .cse5 .cse4 v_ArrVal_2396) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (= v_prenex_23 |c_ULTIMATE.start_main_#t~mem54#1.base|))))) is different from false [2025-03-04 09:22:40,606 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (forall ((v_ArrVal_2391 (Array Int Int)) (v_ArrVal_2395 (Array Int Int)) (v_ArrVal_2394 (Array Int Int)) (v_ArrVal_2393 (Array Int Int)) (v_ArrVal_2392 (Array Int Int))) (< 0 (+ (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_2391))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2392) .cse1 v_ArrVal_2393) (select (select (store .cse2 .cse1 v_ArrVal_2394) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_2395))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 1))) (forall ((v_prenex_23 Int)) (or (forall ((v_ArrVal_2397 Int) (v_prenex_25 (Array Int Int)) (v_prenex_24 (Array Int Int)) (v_prenex_22 (Array Int Int)) (v_ArrVal_2396 (Array Int Int)) (v_prenex_27 (Array Int Int)) (v_prenex_26 (Array Int Int))) (let ((.cse7 (store |c_#memory_$Pointer$#1.base| .cse0 v_prenex_22))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_prenex_25))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (< (+ (select (select (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_prenex_27) .cse4 v_prenex_26) .cse5 v_prenex_24) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 3) (select (store |c_#length| v_prenex_23 v_ArrVal_2397) (select (select (store .cse6 .cse5 v_ArrVal_2396) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))) (= .cse0 v_prenex_23)))))) is different from false [2025-03-04 09:22:40,656 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_2390 (Array Int Int)) (v_prenex_23 Int) (v_ArrVal_2389 (Array Int Int))) (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_2390))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (or (= .cse0 v_prenex_23) (forall ((v_ArrVal_2397 Int) (v_prenex_25 (Array Int Int)) (v_prenex_24 (Array Int Int)) (v_prenex_22 (Array Int Int)) (v_ArrVal_2396 (Array Int Int)) (v_prenex_27 (Array Int Int)) (v_prenex_26 (Array Int Int))) (let ((.cse5 (store .cse6 .cse0 v_prenex_22))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_prenex_25))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (< (+ 3 (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_2389) .cse0 v_prenex_27) .cse1 v_prenex_26) .cse2 v_prenex_24) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select (store |c_#length| v_prenex_23 v_ArrVal_2397) (select (select (store .cse4 .cse2 v_ArrVal_2396) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))))) (forall ((v_ArrVal_2391 (Array Int Int)) (v_ArrVal_2390 (Array Int Int)) (v_ArrVal_2389 (Array Int Int)) (v_ArrVal_2395 (Array Int Int)) (v_ArrVal_2394 (Array Int Int)) (v_ArrVal_2393 (Array Int Int)) (v_ArrVal_2392 (Array Int Int))) (< 0 (+ (select (select (let ((.cse10 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_2390))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_2391))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_2389) .cse7 v_ArrVal_2392) .cse8 v_ArrVal_2393) (select (select (store .cse9 .cse8 v_ArrVal_2394) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_2395))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 1))))) is different from false [2025-03-04 09:22:50,735 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_2391 (Array Int Int)) (v_ArrVal_2390 (Array Int Int)) (v_ArrVal_2403 (Array Int Int)) (v_ArrVal_2402 (Array Int Int)) (v_ArrVal_2389 (Array Int Int)) (v_ArrVal_2395 (Array Int Int)) (v_ArrVal_2394 (Array Int Int)) (v_ArrVal_2393 (Array Int Int)) (v_ArrVal_2392 (Array Int Int))) (< 0 (+ (select (select (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_2403))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse5 (store .cse6 .cse0 v_ArrVal_2390))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_2391))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_2402) .cse0 v_ArrVal_2389) .cse1 v_ArrVal_2392) .cse2 v_ArrVal_2393) (select (select (store .cse3 .cse2 v_ArrVal_2394) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_2395))))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) 1))) (forall ((v_ArrVal_2390 (Array Int Int)) (v_ArrVal_2403 (Array Int Int)) (v_prenex_23 Int) (v_ArrVal_2402 (Array Int Int)) (v_ArrVal_2389 (Array Int Int))) (let ((.cse14 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_2403))) (let ((.cse7 (select (select .cse14 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse13 (store .cse14 .cse7 v_ArrVal_2390))) (let ((.cse8 (select (select .cse13 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (or (forall ((v_ArrVal_2397 Int) (v_prenex_25 (Array Int Int)) (v_prenex_24 (Array Int Int)) (v_prenex_22 (Array Int Int)) (v_ArrVal_2396 (Array Int Int)) (v_prenex_27 (Array Int Int)) (v_prenex_26 (Array Int Int))) (let ((.cse12 (store .cse13 .cse8 v_prenex_22))) (let ((.cse9 (select (select .cse12 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse11 (store .cse12 .cse9 v_prenex_25))) (let ((.cse10 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (< (+ 3 (select (select (store (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem51#1.base| v_ArrVal_2402) .cse7 v_ArrVal_2389) .cse8 v_prenex_27) .cse9 v_prenex_26) .cse10 v_prenex_24) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)) (select (store |c_#length| v_prenex_23 v_ArrVal_2397) (select (select (store .cse11 .cse10 v_ArrVal_2396) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))) (= v_prenex_23 .cse8))))))))) is different from false [2025-03-04 09:22:50,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808336401] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:22:50,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:22:50,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14] total 24 [2025-03-04 09:22:50,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988308608] [2025-03-04 09:22:50,750 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:22:50,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-04 09:22:50,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:22:50,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-04 09:22:50,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=802, Unknown=22, NotChecked=378, Total=1332 [2025-03-04 09:22:50,751 INFO L87 Difference]: Start difference. First operand 682 states and 773 transitions. Second operand has 25 states, 23 states have (on average 6.739130434782608) internal successors, (155), 24 states have internal predecessors, (155), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:23:13,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:23:13,914 INFO L93 Difference]: Finished difference Result 684 states and 777 transitions. [2025-03-04 09:23:13,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-03-04 09:23:13,914 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 6.739130434782608) internal successors, (155), 24 states have internal predecessors, (155), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 101 [2025-03-04 09:23:13,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:23:13,916 INFO L225 Difference]: With dead ends: 684 [2025-03-04 09:23:13,916 INFO L226 Difference]: Without dead ends: 684 [2025-03-04 09:23:13,916 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 101 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=249, Invalid=1559, Unknown=22, NotChecked=522, Total=2352 [2025-03-04 09:23:13,917 INFO L435 NwaCegarLoop]: 317 mSDtfsCounter, 522 mSDsluCounter, 2732 mSDsCounter, 0 mSdLazyCounter, 3949 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 3049 SdHoareTripleChecker+Invalid, 3968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 3949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:23:13,917 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 3049 Invalid, 3968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 3949 Invalid, 0 Unknown, 0 Unchecked, 21.0s Time] [2025-03-04 09:23:13,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2025-03-04 09:23:13,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 662. [2025-03-04 09:23:13,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 477 states have (on average 1.5639412997903563) internal successors, (746), 656 states have internal predecessors, (746), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-04 09:23:13,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 752 transitions. [2025-03-04 09:23:13,923 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 752 transitions. Word has length 101 [2025-03-04 09:23:13,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:23:13,923 INFO L471 AbstractCegarLoop]: Abstraction has 662 states and 752 transitions. [2025-03-04 09:23:13,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 6.739130434782608) internal successors, (155), 24 states have internal predecessors, (155), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-03-04 09:23:13,923 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 752 transitions. [2025-03-04 09:23:13,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2025-03-04 09:23:13,924 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:23:13,924 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:23:13,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-04 09:23:14,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2025-03-04 09:23:14,125 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr200REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 317 more)] === [2025-03-04 09:23:14,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:23:14,125 INFO L85 PathProgramCache]: Analyzing trace with hash -87123703, now seen corresponding path program 1 times [2025-03-04 09:23:14,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:23:14,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256292312] [2025-03-04 09:23:14,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:23:14,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:23:14,142 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-03-04 09:23:14,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-03-04 09:23:14,152 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:23:14,152 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:15,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 09:23:15,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:23:15,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256292312] [2025-03-04 09:23:15,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256292312] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:23:15,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:23:15,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2025-03-04 09:23:15,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330593699] [2025-03-04 09:23:15,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:23:15,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-04 09:23:15,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:23:15,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-04 09:23:15,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2025-03-04 09:23:15,616 INFO L87 Difference]: Start difference. First operand 662 states and 752 transitions. Second operand has 15 states, 14 states have (on average 7.214285714285714) internal successors, (101), 15 states have internal predecessors, (101), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)