./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.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_test10-1.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 43c551c05c986c34609f999e25a13e0dbb4f692e7b1d3b7f2939ec615c71d0d0 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 09:22:58,679 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 09:22:58,729 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-04 09:22:58,736 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 09:22:58,739 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 09:22:58,763 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 09:22:58,764 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 09:22:58,764 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 09:22:58,764 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 09:22:58,765 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 09:22:58,765 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 09:22:58,765 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 09:22:58,766 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 09:22:58,766 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 09:22:58,766 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 09:22:58,766 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 09:22:58,766 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 09:22:58,766 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 09:22:58,766 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 09:22:58,766 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 09:22:58,766 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-04 09:22:58,766 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-04 09:22:58,766 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-04 09:22:58,767 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 09:22:58,767 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-04 09:22:58,767 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 09:22:58,767 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 09:22:58,767 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 09:22:58,767 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 09:22:58,767 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 09:22:58,767 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 09:22:58,767 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 09:22:58,768 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 09:22:58,768 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:22:58,768 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 09:22:58,768 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 09:22:58,768 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 09:22:58,768 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 09:22:58,768 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 09:22:58,768 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 09:22:58,768 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 09:22:58,769 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 09:22:58,769 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 -> 43c551c05c986c34609f999e25a13e0dbb4f692e7b1d3b7f2939ec615c71d0d0 [2025-03-04 09:22:59,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 09:22:59,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 09:22:59,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 09:22:59,014 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 09:22:59,014 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 09:22:59,015 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i [2025-03-04 09:23:00,232 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33aa77949/33ab283c4bca482c9423900a9ac3de39/FLAGfd28a17e5 [2025-03-04 09:23:00,591 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 09:23:00,591 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i [2025-03-04 09:23:00,608 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33aa77949/33ab283c4bca482c9423900a9ac3de39/FLAGfd28a17e5 [2025-03-04 09:23:00,623 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33aa77949/33ab283c4bca482c9423900a9ac3de39 [2025-03-04 09:23:00,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 09:23:00,626 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 09:23:00,628 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 09:23:00,628 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 09:23:00,631 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 09:23:00,632 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:23:00" (1/1) ... [2025-03-04 09:23:00,632 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b70be81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:23:00, skipping insertion in model container [2025-03-04 09:23:00,633 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 09:23:00" (1/1) ... [2025-03-04 09:23:00,675 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 09:23:00,929 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 09:23:00,954 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 09:23:00,957 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 09:23:00,960 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 09:23:00,967 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 09:23:00,986 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 09:23:00,987 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 09:23:00,989 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 09:23:00,992 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 09:23:01,013 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 09:23:01,017 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 09:23:01,018 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 09:23:01,018 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 09:23:01,031 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 09:23:01,031 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 09:23:01,034 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 09:23:01,034 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 09:23:01,043 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 09:23:01,043 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 09:23:01,044 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 09:23:01,044 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 09:23:01,054 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 09:23:01,054 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 09:23:01,055 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 09:23:01,056 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 09:23:01,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:23:01,074 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 09:23:01,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 09:23:01,191 INFO L204 MainTranslator]: Completed translation [2025-03-04 09:23:01,191 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:23:01 WrapperNode [2025-03-04 09:23:01,191 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 09:23:01,192 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 09:23:01,192 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 09:23:01,192 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 09:23:01,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:23:01" (1/1) ... [2025-03-04 09:23:01,219 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:23:01" (1/1) ... [2025-03-04 09:23:01,293 INFO L138 Inliner]: procedures = 177, calls = 507, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3338 [2025-03-04 09:23:01,294 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 09:23:01,295 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 09:23:01,295 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 09:23:01,295 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 09:23:01,301 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:23:01" (1/1) ... [2025-03-04 09:23:01,302 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:23:01" (1/1) ... [2025-03-04 09:23:01,321 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:23:01" (1/1) ... [2025-03-04 09:23:01,446 INFO L175 MemorySlicer]: Split 480 memory accesses to 3 slices as follows [2, 106, 372]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 86 writes are split as follows [0, 4, 82]. [2025-03-04 09:23:01,447 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:23:01" (1/1) ... [2025-03-04 09:23:01,448 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:23:01" (1/1) ... [2025-03-04 09:23:01,502 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:23:01" (1/1) ... [2025-03-04 09:23:01,507 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:23:01" (1/1) ... [2025-03-04 09:23:01,516 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:23:01" (1/1) ... [2025-03-04 09:23:01,526 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:23:01" (1/1) ... [2025-03-04 09:23:01,548 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 09:23:01,549 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 09:23:01,550 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 09:23:01,550 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 09:23:01,550 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:23:01" (1/1) ... [2025-03-04 09:23:01,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 09:23:01,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:23:01,575 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 09:23:01,579 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 09:23:01,597 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2025-03-04 09:23:01,599 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2025-03-04 09:23:01,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 09:23:01,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 09:23:01,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-04 09:23:01,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-04 09:23:01,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-04 09:23:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 09:23:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 09:23:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-04 09:23:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2025-03-04 09:23:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2025-03-04 09:23:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2025-03-04 09:23:01,600 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2025-03-04 09:23:01,600 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2025-03-04 09:23:01,600 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2025-03-04 09:23:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-04 09:23:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 09:23:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-04 09:23:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-04 09:23:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-04 09:23:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 09:23:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-04 09:23:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-04 09:23:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-04 09:23:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 09:23:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 09:23:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 09:23:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-04 09:23:01,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 09:23:01,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 09:23:01,825 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 09:23:01,827 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 09:23:04,828 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L731: call ULTIMATE.dealloc(main_~#i~0#1.base, main_~#i~0#1.offset);havoc main_~#i~0#1.base, main_~#i~0#1.offset; [2025-03-04 09:23:05,098 INFO L? ?]: Removed 2487 outVars from TransFormulas that were not future-live. [2025-03-04 09:23:05,098 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 09:23:05,196 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 09:23:05,196 INFO L336 CfgBuilder]: Removed 2 assume(true) statements. [2025-03-04 09:23:05,197 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:23:05 BoogieIcfgContainer [2025-03-04 09:23:05,197 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 09:23:05,198 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 09:23:05,198 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 09:23:05,202 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 09:23:05,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 09:23:00" (1/3) ... [2025-03-04 09:23:05,202 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1baafe0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:23:05, skipping insertion in model container [2025-03-04 09:23:05,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 09:23:01" (2/3) ... [2025-03-04 09:23:05,203 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1baafe0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 09:23:05, skipping insertion in model container [2025-03-04 09:23:05,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 09:23:05" (3/3) ... [2025-03-04 09:23:05,203 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test10-1.i [2025-03-04 09:23:05,214 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 09:23:05,215 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_FNV_test10-1.i that has 6 procedures, 2646 locations, 1 initial locations, 78 loop locations, and 986 error locations. [2025-03-04 09:23:05,266 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 09:23:05,275 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;@155a4c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 09:23:05,275 INFO L334 AbstractCegarLoop]: Starting to check reachability of 986 error locations. [2025-03-04 09:23:05,283 INFO L276 IsEmpty]: Start isEmpty. Operand has 2636 states, 1638 states have (on average 1.9786324786324787) internal successors, (3241), 2622 states have internal predecessors, (3241), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2025-03-04 09:23:05,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-04 09:23:05,286 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:23:05,286 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-04 09:23:05,286 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr983REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-04 09:23:05,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:23:05,290 INFO L85 PathProgramCache]: Analyzing trace with hash 3394041, now seen corresponding path program 1 times [2025-03-04 09:23:05,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:23:05,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509841481] [2025-03-04 09:23:05,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:23:05,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:23:05,368 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 09:23:05,381 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 09:23:05,381 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:23:05,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:05,463 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 09:23:05,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:23:05,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509841481] [2025-03-04 09:23:05,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509841481] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:23:05,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:23:05,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:23:05,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805016037] [2025-03-04 09:23:05,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:23:05,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:23:05,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:23:05,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:23:05,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:23:05,488 INFO L87 Difference]: Start difference. First operand has 2636 states, 1638 states have (on average 1.9786324786324787) internal successors, (3241), 2622 states have internal predecessors, (3241), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:23:06,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:23:06,850 INFO L93 Difference]: Finished difference Result 3219 states and 3790 transitions. [2025-03-04 09:23:06,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:23:06,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2025-03-04 09:23:06,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:23:06,874 INFO L225 Difference]: With dead ends: 3219 [2025-03-04 09:23:06,875 INFO L226 Difference]: Without dead ends: 3217 [2025-03-04 09:23:06,876 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 09:23:06,877 INFO L435 NwaCegarLoop]: 2063 mSDtfsCounter, 2855 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2865 SdHoareTripleChecker+Valid, 2575 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:23:06,879 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2865 Valid, 2575 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-03-04 09:23:06,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3217 states. [2025-03-04 09:23:06,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3217 to 2871. [2025-03-04 09:23:06,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2871 states, 1901 states have (on average 1.8742766964755393) internal successors, (3563), 2855 states have internal predecessors, (3563), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-04 09:23:07,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2871 states to 2871 states and 3595 transitions. [2025-03-04 09:23:07,008 INFO L78 Accepts]: Start accepts. Automaton has 2871 states and 3595 transitions. Word has length 3 [2025-03-04 09:23:07,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:23:07,009 INFO L471 AbstractCegarLoop]: Abstraction has 2871 states and 3595 transitions. [2025-03-04 09:23:07,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:23:07,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2871 states and 3595 transitions. [2025-03-04 09:23:07,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-03-04 09:23:07,009 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:23:07,009 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-03-04 09:23:07,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 09:23:07,009 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr984REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-04 09:23:07,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:23:07,010 INFO L85 PathProgramCache]: Analyzing trace with hash 3394042, now seen corresponding path program 1 times [2025-03-04 09:23:07,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:23:07,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871703427] [2025-03-04 09:23:07,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:23:07,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:23:07,025 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-04 09:23:07,033 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-04 09:23:07,035 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:23:07,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:07,101 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 09:23:07,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:23:07,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871703427] [2025-03-04 09:23:07,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871703427] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:23:07,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:23:07,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:23:07,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197235143] [2025-03-04 09:23:07,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:23:07,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:23:07,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:23:07,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:23:07,104 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:23:07,104 INFO L87 Difference]: Start difference. First operand 2871 states and 3595 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:23:08,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:23:08,450 INFO L93 Difference]: Finished difference Result 4036 states and 5064 transitions. [2025-03-04 09:23:08,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:23:08,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2025-03-04 09:23:08,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:23:08,462 INFO L225 Difference]: With dead ends: 4036 [2025-03-04 09:23:08,463 INFO L226 Difference]: Without dead ends: 4036 [2025-03-04 09:23:08,463 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 09:23:08,463 INFO L435 NwaCegarLoop]: 2613 mSDtfsCounter, 1463 mSDsluCounter, 1978 mSDsCounter, 0 mSdLazyCounter, 1571 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 4591 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-04 09:23:08,464 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 4591 Invalid, 1582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1571 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-04 09:23:08,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4036 states. [2025-03-04 09:23:08,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4036 to 3708. [2025-03-04 09:23:08,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3708 states, 2736 states have (on average 1.8369883040935673) internal successors, (5026), 3689 states have internal predecessors, (5026), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2025-03-04 09:23:08,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3708 states to 3708 states and 5064 transitions. [2025-03-04 09:23:08,557 INFO L78 Accepts]: Start accepts. Automaton has 3708 states and 5064 transitions. Word has length 3 [2025-03-04 09:23:08,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:23:08,557 INFO L471 AbstractCegarLoop]: Abstraction has 3708 states and 5064 transitions. [2025-03-04 09:23:08,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:23:08,557 INFO L276 IsEmpty]: Start isEmpty. Operand 3708 states and 5064 transitions. [2025-03-04 09:23:08,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-04 09:23:08,558 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:23:08,558 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:23:08,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 09:23:08,558 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr980REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-04 09:23:08,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:23:08,559 INFO L85 PathProgramCache]: Analyzing trace with hash -754862443, now seen corresponding path program 1 times [2025-03-04 09:23:08,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:23:08,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518004931] [2025-03-04 09:23:08,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:23:08,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:23:08,576 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 09:23:08,589 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 09:23:08,591 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:23:08,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:08,745 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 09:23:08,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:23:08,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518004931] [2025-03-04 09:23:08,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518004931] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:23:08,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:23:08,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:23:08,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071193921] [2025-03-04 09:23:08,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:23:08,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:23:08,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:23:08,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:23:08,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:23:08,748 INFO L87 Difference]: Start difference. First operand 3708 states and 5064 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:23:12,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:23:12,374 INFO L93 Difference]: Finished difference Result 6952 states and 8532 transitions. [2025-03-04 09:23:12,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:23:12,374 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-03-04 09:23:12,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:23:12,391 INFO L225 Difference]: With dead ends: 6952 [2025-03-04 09:23:12,391 INFO L226 Difference]: Without dead ends: 6952 [2025-03-04 09:23:12,392 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:23:12,394 INFO L435 NwaCegarLoop]: 2423 mSDtfsCounter, 6139 mSDsluCounter, 5170 mSDsCounter, 0 mSdLazyCounter, 6213 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6142 SdHoareTripleChecker+Valid, 7593 SdHoareTripleChecker+Invalid, 6260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 6213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2025-03-04 09:23:12,395 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6142 Valid, 7593 Invalid, 6260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 6213 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2025-03-04 09:23:12,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6952 states. [2025-03-04 09:23:12,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6952 to 4715. [2025-03-04 09:23:12,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4715 states, 3743 states have (on average 1.8693561314453646) internal successors, (6997), 4690 states have internal predecessors, (6997), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:23:12,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4715 states to 4715 states and 7047 transitions. [2025-03-04 09:23:12,471 INFO L78 Accepts]: Start accepts. Automaton has 4715 states and 7047 transitions. Word has length 7 [2025-03-04 09:23:12,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:23:12,471 INFO L471 AbstractCegarLoop]: Abstraction has 4715 states and 7047 transitions. [2025-03-04 09:23:12,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:23:12,472 INFO L276 IsEmpty]: Start isEmpty. Operand 4715 states and 7047 transitions. [2025-03-04 09:23:12,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-04 09:23:12,472 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:23:12,473 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:23:12,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 09:23:12,473 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr977REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-04 09:23:12,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:23:12,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1925895946, now seen corresponding path program 1 times [2025-03-04 09:23:12,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:23:12,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897753499] [2025-03-04 09:23:12,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:23:12,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:23:12,486 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 09:23:12,490 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 09:23:12,493 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:23:12,493 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:12,537 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 09:23:12,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:23:12,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897753499] [2025-03-04 09:23:12,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897753499] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:23:12,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:23:12,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:23:12,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637982892] [2025-03-04 09:23:12,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:23:12,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:23:12,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:23:12,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:23:12,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:23:12,539 INFO L87 Difference]: Start difference. First operand 4715 states and 7047 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 09:23:13,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:23:13,663 INFO L93 Difference]: Finished difference Result 5791 states and 8305 transitions. [2025-03-04 09:23:13,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:23:13,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2025-03-04 09:23:13,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:23:13,678 INFO L225 Difference]: With dead ends: 5791 [2025-03-04 09:23:13,678 INFO L226 Difference]: Without dead ends: 5791 [2025-03-04 09:23:13,678 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 09:23:13,679 INFO L435 NwaCegarLoop]: 3310 mSDtfsCounter, 2826 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 1683 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2836 SdHoareTripleChecker+Valid, 4395 SdHoareTripleChecker+Invalid, 1782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:23:13,679 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2836 Valid, 4395 Invalid, 1782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1683 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-04 09:23:13,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5791 states. [2025-03-04 09:23:13,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5791 to 4623. [2025-03-04 09:23:13,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4623 states, 3743 states have (on average 1.8119155757413838) internal successors, (6782), 4598 states have internal predecessors, (6782), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:23:13,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4623 states to 4623 states and 6832 transitions. [2025-03-04 09:23:13,757 INFO L78 Accepts]: Start accepts. Automaton has 4623 states and 6832 transitions. Word has length 8 [2025-03-04 09:23:13,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:23:13,757 INFO L471 AbstractCegarLoop]: Abstraction has 4623 states and 6832 transitions. [2025-03-04 09:23:13,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 09:23:13,757 INFO L276 IsEmpty]: Start isEmpty. Operand 4623 states and 6832 transitions. [2025-03-04 09:23:13,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-04 09:23:13,758 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:23:13,758 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:23:13,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 09:23:13,758 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr978REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-04 09:23:13,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:23:13,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1925895945, now seen corresponding path program 1 times [2025-03-04 09:23:13,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:23:13,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422373430] [2025-03-04 09:23:13,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:23:13,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:23:13,769 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 09:23:13,775 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 09:23:13,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:23:13,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:13,830 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 09:23:13,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:23:13,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422373430] [2025-03-04 09:23:13,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422373430] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:23:13,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:23:13,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 09:23:13,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747246339] [2025-03-04 09:23:13,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:23:13,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:23:13,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:23:13,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:23:13,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:23:13,832 INFO L87 Difference]: Start difference. First operand 4623 states and 6832 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 09:23:14,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:23:14,994 INFO L93 Difference]: Finished difference Result 7346 states and 10773 transitions. [2025-03-04 09:23:14,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:23:14,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2025-03-04 09:23:14,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:23:15,012 INFO L225 Difference]: With dead ends: 7346 [2025-03-04 09:23:15,012 INFO L226 Difference]: Without dead ends: 7346 [2025-03-04 09:23:15,012 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 09:23:15,013 INFO L435 NwaCegarLoop]: 3667 mSDtfsCounter, 2307 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 1783 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2311 SdHoareTripleChecker+Valid, 5331 SdHoareTripleChecker+Invalid, 1808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:23:15,013 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2311 Valid, 5331 Invalid, 1808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1783 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-04 09:23:15,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7346 states. [2025-03-04 09:23:15,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7346 to 5155. [2025-03-04 09:23:15,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5155 states, 4285 states have (on average 1.8030338389731622) internal successors, (7726), 5130 states have internal predecessors, (7726), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:23:15,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5155 states to 5155 states and 7776 transitions. [2025-03-04 09:23:15,080 INFO L78 Accepts]: Start accepts. Automaton has 5155 states and 7776 transitions. Word has length 8 [2025-03-04 09:23:15,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:23:15,081 INFO L471 AbstractCegarLoop]: Abstraction has 5155 states and 7776 transitions. [2025-03-04 09:23:15,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 09:23:15,081 INFO L276 IsEmpty]: Start isEmpty. Operand 5155 states and 7776 transitions. [2025-03-04 09:23:15,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-03-04 09:23:15,081 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:23:15,082 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:23:15,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 09:23:15,082 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr346REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-04 09:23:15,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:23:15,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1294427171, now seen corresponding path program 1 times [2025-03-04 09:23:15,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:23:15,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947113856] [2025-03-04 09:23:15,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:23:15,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:23:15,112 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 09:23:15,116 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 09:23:15,116 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:23:15,116 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:15,182 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 09:23:15,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:23:15,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947113856] [2025-03-04 09:23:15,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947113856] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:23:15,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:23:15,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:23:15,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553106289] [2025-03-04 09:23:15,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:23:15,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:23:15,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:23:15,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:23:15,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:23:15,183 INFO L87 Difference]: Start difference. First operand 5155 states and 7776 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:23:15,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:23:15,531 INFO L93 Difference]: Finished difference Result 7142 states and 10540 transitions. [2025-03-04 09:23:15,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:23:15,531 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-03-04 09:23:15,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:23:15,548 INFO L225 Difference]: With dead ends: 7142 [2025-03-04 09:23:15,548 INFO L226 Difference]: Without dead ends: 7142 [2025-03-04 09:23:15,548 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 09:23:15,549 INFO L435 NwaCegarLoop]: 3074 mSDtfsCounter, 1443 mSDsluCounter, 5788 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 8862 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-04 09:23:15,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1449 Valid, 8862 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-04 09:23:15,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7142 states. [2025-03-04 09:23:15,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7142 to 5157. [2025-03-04 09:23:15,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5157 states, 4287 states have (on average 1.8026592022393282) internal successors, (7728), 5132 states have internal predecessors, (7728), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:23:15,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5157 states to 5157 states and 7778 transitions. [2025-03-04 09:23:15,623 INFO L78 Accepts]: Start accepts. Automaton has 5157 states and 7778 transitions. Word has length 10 [2025-03-04 09:23:15,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:23:15,623 INFO L471 AbstractCegarLoop]: Abstraction has 5157 states and 7778 transitions. [2025-03-04 09:23:15,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:23:15,623 INFO L276 IsEmpty]: Start isEmpty. Operand 5157 states and 7778 transitions. [2025-03-04 09:23:15,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-04 09:23:15,623 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:23:15,623 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:23:15,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 09:23:15,623 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr967REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-04 09:23:15,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:23:15,624 INFO L85 PathProgramCache]: Analyzing trace with hash 180417095, now seen corresponding path program 1 times [2025-03-04 09:23:15,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:23:15,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198401183] [2025-03-04 09:23:15,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:23:15,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:23:15,634 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 09:23:15,639 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 09:23:15,640 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:23:15,640 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:15,687 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 09:23:15,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:23:15,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198401183] [2025-03-04 09:23:15,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198401183] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:23:15,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:23:15,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:23:15,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652649513] [2025-03-04 09:23:15,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:23:15,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:23:15,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:23:15,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:23:15,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:23:15,688 INFO L87 Difference]: Start difference. First operand 5157 states and 7778 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 09:23:16,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:23:16,703 INFO L93 Difference]: Finished difference Result 5232 states and 7884 transitions. [2025-03-04 09:23:16,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:23:16,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2025-03-04 09:23:16,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:23:16,712 INFO L225 Difference]: With dead ends: 5232 [2025-03-04 09:23:16,712 INFO L226 Difference]: Without dead ends: 5232 [2025-03-04 09:23:16,712 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 09:23:16,713 INFO L435 NwaCegarLoop]: 1891 mSDtfsCounter, 3089 mSDsluCounter, 1776 mSDsCounter, 0 mSdLazyCounter, 2240 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3099 SdHoareTripleChecker+Valid, 3667 SdHoareTripleChecker+Invalid, 2272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-04 09:23:16,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3099 Valid, 3667 Invalid, 2272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2240 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-04 09:23:16,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5232 states. [2025-03-04 09:23:16,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5232 to 5134. [2025-03-04 09:23:16,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5134 states, 4287 states have (on average 1.7919290879402845) internal successors, (7682), 5109 states have internal predecessors, (7682), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:23:16,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5134 states to 5134 states and 7732 transitions. [2025-03-04 09:23:16,765 INFO L78 Accepts]: Start accepts. Automaton has 5134 states and 7732 transitions. Word has length 19 [2025-03-04 09:23:16,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:23:16,765 INFO L471 AbstractCegarLoop]: Abstraction has 5134 states and 7732 transitions. [2025-03-04 09:23:16,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 09:23:16,765 INFO L276 IsEmpty]: Start isEmpty. Operand 5134 states and 7732 transitions. [2025-03-04 09:23:16,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-04 09:23:16,766 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:23:16,766 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:23:16,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-04 09:23:16,766 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr968REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-04 09:23:16,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:23:16,766 INFO L85 PathProgramCache]: Analyzing trace with hash 180417096, now seen corresponding path program 1 times [2025-03-04 09:23:16,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:23:16,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196995168] [2025-03-04 09:23:16,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:23:16,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:23:16,776 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 09:23:16,783 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 09:23:16,783 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:23:16,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:16,828 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 09:23:16,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:23:16,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196995168] [2025-03-04 09:23:16,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196995168] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:23:16,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:23:16,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:23:16,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593297934] [2025-03-04 09:23:16,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:23:16,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:23:16,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:23:16,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:23:16,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:23:16,830 INFO L87 Difference]: Start difference. First operand 5134 states and 7732 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 09:23:16,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:23:16,991 INFO L93 Difference]: Finished difference Result 4996 states and 7526 transitions. [2025-03-04 09:23:16,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:23:16,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 19 [2025-03-04 09:23:16,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:23:16,999 INFO L225 Difference]: With dead ends: 4996 [2025-03-04 09:23:17,000 INFO L226 Difference]: Without dead ends: 4996 [2025-03-04 09:23:17,000 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 09:23:17,001 INFO L435 NwaCegarLoop]: 2732 mSDtfsCounter, 60 mSDsluCounter, 2679 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 5411 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:23:17,001 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 5411 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 09:23:17,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4996 states. [2025-03-04 09:23:17,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4996 to 4996. [2025-03-04 09:23:17,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4996 states, 4161 states have (on average 1.7966834895457822) internal successors, (7476), 4971 states have internal predecessors, (7476), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:23:17,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4996 states to 4996 states and 7526 transitions. [2025-03-04 09:23:17,043 INFO L78 Accepts]: Start accepts. Automaton has 4996 states and 7526 transitions. Word has length 19 [2025-03-04 09:23:17,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:23:17,043 INFO L471 AbstractCegarLoop]: Abstraction has 4996 states and 7526 transitions. [2025-03-04 09:23:17,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 09:23:17,043 INFO L276 IsEmpty]: Start isEmpty. Operand 4996 states and 7526 transitions. [2025-03-04 09:23:17,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-03-04 09:23:17,043 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:23:17,043 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 09:23:17,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-04 09:23:17,044 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr659REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-04 09:23:17,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:23:17,044 INFO L85 PathProgramCache]: Analyzing trace with hash 155882248, now seen corresponding path program 1 times [2025-03-04 09:23:17,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:23:17,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43939470] [2025-03-04 09:23:17,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:23:17,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:23:17,054 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-04 09:23:17,057 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-04 09:23:17,058 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:23:17,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:17,115 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 09:23:17,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:23:17,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43939470] [2025-03-04 09:23:17,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43939470] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:23:17,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:23:17,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:23:17,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254506762] [2025-03-04 09:23:17,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:23:17,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:23:17,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:23:17,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:23:17,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:23:17,116 INFO L87 Difference]: Start difference. First operand 4996 states and 7526 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 09:23:17,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:23:17,414 INFO L93 Difference]: Finished difference Result 6883 states and 10161 transitions. [2025-03-04 09:23:17,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:23:17,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2025-03-04 09:23:17,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:23:17,425 INFO L225 Difference]: With dead ends: 6883 [2025-03-04 09:23:17,425 INFO L226 Difference]: Without dead ends: 6883 [2025-03-04 09:23:17,425 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 09:23:17,426 INFO L435 NwaCegarLoop]: 3011 mSDtfsCounter, 1306 mSDsluCounter, 5609 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 8620 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-04 09:23:17,426 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1312 Valid, 8620 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-04 09:23:17,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6883 states. [2025-03-04 09:23:17,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6883 to 5006. [2025-03-04 09:23:17,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5006 states, 4171 states have (on average 1.794773435626948) internal successors, (7486), 4981 states have internal predecessors, (7486), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:23:17,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5006 states to 5006 states and 7536 transitions. [2025-03-04 09:23:17,490 INFO L78 Accepts]: Start accepts. Automaton has 5006 states and 7536 transitions. Word has length 19 [2025-03-04 09:23:17,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:23:17,491 INFO L471 AbstractCegarLoop]: Abstraction has 5006 states and 7536 transitions. [2025-03-04 09:23:17,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 09:23:17,491 INFO L276 IsEmpty]: Start isEmpty. Operand 5006 states and 7536 transitions. [2025-03-04 09:23:17,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-03-04 09:23:17,492 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:23:17,492 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] [2025-03-04 09:23:17,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-04 09:23:17,492 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr944REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-04 09:23:17,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:23:17,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1297840874, now seen corresponding path program 1 times [2025-03-04 09:23:17,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:23:17,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833772232] [2025-03-04 09:23:17,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:23:17,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:23:17,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-04 09:23:17,517 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-04 09:23:17,517 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:23:17,517 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:17,558 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 09:23:17,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:23:17,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833772232] [2025-03-04 09:23:17,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833772232] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:23:17,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:23:17,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:23:17,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265553679] [2025-03-04 09:23:17,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:23:17,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:23:17,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:23:17,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:23:17,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:23:17,560 INFO L87 Difference]: Start difference. First operand 5006 states and 7536 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:23:17,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:23:17,797 INFO L93 Difference]: Finished difference Result 4983 states and 7492 transitions. [2025-03-04 09:23:17,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:23:17,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-03-04 09:23:17,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:23:17,808 INFO L225 Difference]: With dead ends: 4983 [2025-03-04 09:23:17,808 INFO L226 Difference]: Without dead ends: 4983 [2025-03-04 09:23:17,808 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 09:23:17,808 INFO L435 NwaCegarLoop]: 2694 mSDtfsCounter, 45 mSDsluCounter, 5365 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 8059 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:23:17,809 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 8059 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 09:23:17,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4983 states. [2025-03-04 09:23:17,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4983 to 4983. [2025-03-04 09:23:17,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4983 states, 4155 states have (on average 1.7910950661853189) internal successors, (7442), 4958 states have internal predecessors, (7442), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:23:17,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4983 states to 4983 states and 7492 transitions. [2025-03-04 09:23:17,868 INFO L78 Accepts]: Start accepts. Automaton has 4983 states and 7492 transitions. Word has length 20 [2025-03-04 09:23:17,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:23:17,868 INFO L471 AbstractCegarLoop]: Abstraction has 4983 states and 7492 transitions. [2025-03-04 09:23:17,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:23:17,868 INFO L276 IsEmpty]: Start isEmpty. Operand 4983 states and 7492 transitions. [2025-03-04 09:23:17,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-03-04 09:23:17,869 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:23:17,869 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] [2025-03-04 09:23:17,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-04 09:23:17,869 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr930REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-04 09:23:17,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:23:17,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1662614112, now seen corresponding path program 1 times [2025-03-04 09:23:17,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:23:17,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913760800] [2025-03-04 09:23:17,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:23:17,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:23:17,888 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-04 09:23:17,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-04 09:23:17,894 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:23:17,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:17,998 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 09:23:17,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:23:17,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913760800] [2025-03-04 09:23:17,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913760800] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:23:17,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:23:17,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:23:17,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296026033] [2025-03-04 09:23:17,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:23:17,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:23:17,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:23:17,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:23:18,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:23:18,002 INFO L87 Difference]: Start difference. First operand 4983 states and 7492 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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 09:23:19,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:23:19,727 INFO L93 Difference]: Finished difference Result 7268 states and 10633 transitions. [2025-03-04 09:23:19,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 09:23:19,727 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2025-03-04 09:23:19,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:23:19,739 INFO L225 Difference]: With dead ends: 7268 [2025-03-04 09:23:19,739 INFO L226 Difference]: Without dead ends: 7268 [2025-03-04 09:23:19,740 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 09:23:19,740 INFO L435 NwaCegarLoop]: 2168 mSDtfsCounter, 2307 mSDsluCounter, 3411 mSDsCounter, 0 mSdLazyCounter, 2709 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2311 SdHoareTripleChecker+Valid, 5579 SdHoareTripleChecker+Invalid, 2712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-04 09:23:19,740 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2311 Valid, 5579 Invalid, 2712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2709 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-04 09:23:19,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7268 states. [2025-03-04 09:23:19,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7268 to 4979. [2025-03-04 09:23:19,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4979 states, 4155 states have (on average 1.7891696750902526) internal successors, (7434), 4954 states have internal predecessors, (7434), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:23:19,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4979 states to 4979 states and 7484 transitions. [2025-03-04 09:23:19,797 INFO L78 Accepts]: Start accepts. Automaton has 4979 states and 7484 transitions. Word has length 34 [2025-03-04 09:23:19,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:23:19,797 INFO L471 AbstractCegarLoop]: Abstraction has 4979 states and 7484 transitions. [2025-03-04 09:23:19,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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 09:23:19,797 INFO L276 IsEmpty]: Start isEmpty. Operand 4979 states and 7484 transitions. [2025-03-04 09:23:19,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-03-04 09:23:19,798 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:23:19,798 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] [2025-03-04 09:23:19,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-04 09:23:19,798 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr916REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-04 09:23:19,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:23:19,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1637404949, now seen corresponding path program 1 times [2025-03-04 09:23:19,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:23:19,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390247790] [2025-03-04 09:23:19,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:23:19,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:23:19,813 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 68 statements into 1 equivalence classes. [2025-03-04 09:23:19,821 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 68 of 68 statements. [2025-03-04 09:23:19,821 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:23:19,821 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:19,871 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 09:23:19,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:23:19,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390247790] [2025-03-04 09:23:19,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390247790] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:23:19,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:23:19,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:23:19,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086462662] [2025-03-04 09:23:19,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:23:19,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 09:23:19,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:23:19,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 09:23:19,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 09:23:19,872 INFO L87 Difference]: Start difference. First operand 4979 states and 7484 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 09:23:20,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:23:20,078 INFO L93 Difference]: Finished difference Result 4967 states and 7464 transitions. [2025-03-04 09:23:20,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:23:20,078 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2025-03-04 09:23:20,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:23:20,087 INFO L225 Difference]: With dead ends: 4967 [2025-03-04 09:23:20,087 INFO L226 Difference]: Without dead ends: 4967 [2025-03-04 09:23:20,088 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 09:23:20,088 INFO L435 NwaCegarLoop]: 2692 mSDtfsCounter, 21 mSDsluCounter, 5353 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 8045 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:23:20,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 8045 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 09:23:20,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4967 states. [2025-03-04 09:23:20,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4967 to 4967. [2025-03-04 09:23:20,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4967 states, 4143 states have (on average 1.7895244991552015) internal successors, (7414), 4942 states have internal predecessors, (7414), 25 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2025-03-04 09:23:20,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4967 states to 4967 states and 7464 transitions. [2025-03-04 09:23:20,136 INFO L78 Accepts]: Start accepts. Automaton has 4967 states and 7464 transitions. Word has length 68 [2025-03-04 09:23:20,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:23:20,136 INFO L471 AbstractCegarLoop]: Abstraction has 4967 states and 7464 transitions. [2025-03-04 09:23:20,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 09:23:20,136 INFO L276 IsEmpty]: Start isEmpty. Operand 4967 states and 7464 transitions. [2025-03-04 09:23:20,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-03-04 09:23:20,137 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:23:20,138 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] [2025-03-04 09:23:20,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-04 09:23:20,138 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr916REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-04 09:23:20,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:23:20,138 INFO L85 PathProgramCache]: Analyzing trace with hash 652935901, now seen corresponding path program 1 times [2025-03-04 09:23:20,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:23:20,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720723002] [2025-03-04 09:23:20,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:23:20,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:23:20,160 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-03-04 09:23:20,178 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-03-04 09:23:20,178 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:23:20,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:20,299 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 09:23:20,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:23:20,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720723002] [2025-03-04 09:23:20,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720723002] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:23:20,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:23:20,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 09:23:20,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410315005] [2025-03-04 09:23:20,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:23:20,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 09:23:20,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:23:20,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 09:23:20,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 09:23:20,301 INFO L87 Difference]: Start difference. First operand 4967 states and 7464 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:23:20,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:23:20,536 INFO L93 Difference]: Finished difference Result 6457 states and 9629 transitions. [2025-03-04 09:23:20,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 09:23:20,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2025-03-04 09:23:20,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:23:20,548 INFO L225 Difference]: With dead ends: 6457 [2025-03-04 09:23:20,548 INFO L226 Difference]: Without dead ends: 6457 [2025-03-04 09:23:20,548 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 09:23:20,549 INFO L435 NwaCegarLoop]: 2706 mSDtfsCounter, 1077 mSDsluCounter, 2644 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 5350 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 09:23:20,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1081 Valid, 5350 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 09:23:20,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6457 states. [2025-03-04 09:23:20,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6457 to 5810. [2025-03-04 09:23:20,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5810 states, 4982 states have (on average 1.7707747892412686) internal successors, (8822), 5781 states have internal predecessors, (8822), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2025-03-04 09:23:20,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5810 states to 5810 states and 8880 transitions. [2025-03-04 09:23:20,615 INFO L78 Accepts]: Start accepts. Automaton has 5810 states and 8880 transitions. Word has length 76 [2025-03-04 09:23:20,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:23:20,616 INFO L471 AbstractCegarLoop]: Abstraction has 5810 states and 8880 transitions. [2025-03-04 09:23:20,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:23:20,616 INFO L276 IsEmpty]: Start isEmpty. Operand 5810 states and 8880 transitions. [2025-03-04 09:23:20,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-03-04 09:23:20,617 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:23:20,617 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 09:23:20,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-04 09:23:20,617 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr886REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-04 09:23:20,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:23:20,617 INFO L85 PathProgramCache]: Analyzing trace with hash -292842370, now seen corresponding path program 1 times [2025-03-04 09:23:20,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:23:20,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947836039] [2025-03-04 09:23:20,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:23:20,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:23:20,634 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 79 statements into 1 equivalence classes. [2025-03-04 09:23:20,657 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 79 of 79 statements. [2025-03-04 09:23:20,657 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:23:20,657 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:21,012 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 09:23:21,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:23:21,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947836039] [2025-03-04 09:23:21,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947836039] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:23:21,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:23:21,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 09:23:21,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963550110] [2025-03-04 09:23:21,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:23:21,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 09:23:21,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:23:21,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 09:23:21,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:23:21,014 INFO L87 Difference]: Start difference. First operand 5810 states and 8880 transitions. Second operand has 6 states, 5 states have (on average 15.8) internal successors, (79), 6 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 09:23:22,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:23:22,369 INFO L93 Difference]: Finished difference Result 5726 states and 8681 transitions. [2025-03-04 09:23:22,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 09:23:22,370 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.8) internal successors, (79), 6 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 09:23:22,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:23:22,377 INFO L225 Difference]: With dead ends: 5726 [2025-03-04 09:23:22,377 INFO L226 Difference]: Without dead ends: 5726 [2025-03-04 09:23:22,377 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:23:22,377 INFO L435 NwaCegarLoop]: 1424 mSDtfsCounter, 5238 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 2651 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5248 SdHoareTripleChecker+Valid, 2796 SdHoareTripleChecker+Invalid, 2759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-04 09:23:22,377 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5248 Valid, 2796 Invalid, 2759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2651 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-04 09:23:22,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5726 states. [2025-03-04 09:23:22,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5726 to 5184. [2025-03-04 09:23:22,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5184 states, 4440 states have (on average 1.725) internal successors, (7659), 5155 states have internal predecessors, (7659), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2025-03-04 09:23:22,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5184 states to 5184 states and 7717 transitions. [2025-03-04 09:23:22,426 INFO L78 Accepts]: Start accepts. Automaton has 5184 states and 7717 transitions. Word has length 79 [2025-03-04 09:23:22,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:23:22,427 INFO L471 AbstractCegarLoop]: Abstraction has 5184 states and 7717 transitions. [2025-03-04 09:23:22,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.8) internal successors, (79), 6 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 09:23:22,427 INFO L276 IsEmpty]: Start isEmpty. Operand 5184 states and 7717 transitions. [2025-03-04 09:23:22,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-03-04 09:23:22,428 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:23:22,428 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] [2025-03-04 09:23:22,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-04 09:23:22,429 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr879REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-04 09:23:22,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:23:22,429 INFO L85 PathProgramCache]: Analyzing trace with hash 2060811752, now seen corresponding path program 1 times [2025-03-04 09:23:22,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:23:22,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514101306] [2025-03-04 09:23:22,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:23:22,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:23:22,447 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-03-04 09:23:22,458 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-03-04 09:23:22,458 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:23:22,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:22,624 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 09:23:22,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:23:22,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514101306] [2025-03-04 09:23:22,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514101306] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:23:22,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:23:22,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:23:22,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646291133] [2025-03-04 09:23:22,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:23:22,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:23:22,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:23:22,625 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:23:22,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:23:22,625 INFO L87 Difference]: Start difference. First operand 5184 states and 7717 transitions. Second operand has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:23:23,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:23:23,770 INFO L93 Difference]: Finished difference Result 5183 states and 7715 transitions. [2025-03-04 09:23:23,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:23:23,770 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2025-03-04 09:23:23,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:23:23,775 INFO L225 Difference]: With dead ends: 5183 [2025-03-04 09:23:23,775 INFO L226 Difference]: Without dead ends: 5183 [2025-03-04 09:23:23,776 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 09:23:23,776 INFO L435 NwaCegarLoop]: 2618 mSDtfsCounter, 2 mSDsluCounter, 5369 mSDsCounter, 0 mSdLazyCounter, 2936 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7987 SdHoareTripleChecker+Invalid, 2937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:23:23,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 7987 Invalid, 2937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2936 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-04 09:23:23,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5183 states. [2025-03-04 09:23:23,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5183 to 5183. [2025-03-04 09:23:23,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5183 states, 4440 states have (on average 1.7245495495495495) internal successors, (7657), 5154 states have internal predecessors, (7657), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2025-03-04 09:23:23,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5183 states to 5183 states and 7715 transitions. [2025-03-04 09:23:23,816 INFO L78 Accepts]: Start accepts. Automaton has 5183 states and 7715 transitions. Word has length 84 [2025-03-04 09:23:23,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:23:23,816 INFO L471 AbstractCegarLoop]: Abstraction has 5183 states and 7715 transitions. [2025-03-04 09:23:23,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:23:23,816 INFO L276 IsEmpty]: Start isEmpty. Operand 5183 states and 7715 transitions. [2025-03-04 09:23:23,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-03-04 09:23:23,817 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:23:23,817 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] [2025-03-04 09:23:23,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-04 09:23:23,817 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr880REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-04 09:23:23,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:23:23,817 INFO L85 PathProgramCache]: Analyzing trace with hash 2060811753, now seen corresponding path program 1 times [2025-03-04 09:23:23,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:23:23,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646318174] [2025-03-04 09:23:23,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:23:23,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:23:23,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-03-04 09:23:23,855 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-03-04 09:23:23,856 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:23:23,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:24,122 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 09:23:24,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:23:24,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646318174] [2025-03-04 09:23:24,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646318174] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:23:24,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:23:24,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 09:23:24,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231520547] [2025-03-04 09:23:24,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:23:24,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 09:23:24,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:23:24,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 09:23:24,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 09:23:24,124 INFO L87 Difference]: Start difference. First operand 5183 states and 7715 transitions. Second operand has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:23:25,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:23:25,502 INFO L93 Difference]: Finished difference Result 5182 states and 7713 transitions. [2025-03-04 09:23:25,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:23:25,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2025-03-04 09:23:25,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:23:25,508 INFO L225 Difference]: With dead ends: 5182 [2025-03-04 09:23:25,509 INFO L226 Difference]: Without dead ends: 5182 [2025-03-04 09:23:25,509 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 09:23:25,509 INFO L435 NwaCegarLoop]: 2618 mSDtfsCounter, 1 mSDsluCounter, 5343 mSDsCounter, 0 mSdLazyCounter, 2959 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 7961 SdHoareTripleChecker+Invalid, 2960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-03-04 09:23:25,509 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 7961 Invalid, 2960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2959 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-03-04 09:23:25,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5182 states. [2025-03-04 09:23:25,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5182 to 5182. [2025-03-04 09:23:25,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5182 states, 4438 states have (on average 1.724876070301938) internal successors, (7655), 5153 states have internal predecessors, (7655), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2025-03-04 09:23:25,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5182 states to 5182 states and 7713 transitions. [2025-03-04 09:23:25,559 INFO L78 Accepts]: Start accepts. Automaton has 5182 states and 7713 transitions. Word has length 84 [2025-03-04 09:23:25,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:23:25,559 INFO L471 AbstractCegarLoop]: Abstraction has 5182 states and 7713 transitions. [2025-03-04 09:23:25,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 09:23:25,560 INFO L276 IsEmpty]: Start isEmpty. Operand 5182 states and 7713 transitions. [2025-03-04 09:23:25,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-04 09:23:25,561 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:23:25,561 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] [2025-03-04 09:23:25,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-04 09:23:25,561 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr875REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-04 09:23:25,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:23:25,562 INFO L85 PathProgramCache]: Analyzing trace with hash 690376773, now seen corresponding path program 1 times [2025-03-04 09:23:25,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:23:25,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598541714] [2025-03-04 09:23:25,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:23:25,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:23:25,578 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-04 09:23:25,587 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-04 09:23:25,587 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:23:25,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:25,764 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 09:23:25,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:23:25,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598541714] [2025-03-04 09:23:25,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598541714] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:23:25,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:23:25,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 09:23:25,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906334579] [2025-03-04 09:23:25,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:23:25,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 09:23:25,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:23:25,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 09:23:25,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-04 09:23:25,766 INFO L87 Difference]: Start difference. First operand 5182 states and 7713 transitions. Second operand has 7 states, 5 states have (on average 18.0) internal successors, (90), 6 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:23:27,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:23:27,658 INFO L93 Difference]: Finished difference Result 5200 states and 7748 transitions. [2025-03-04 09:23:27,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 09:23:27,658 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 18.0) internal successors, (90), 6 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 92 [2025-03-04 09:23:27,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:23:27,667 INFO L225 Difference]: With dead ends: 5200 [2025-03-04 09:23:27,667 INFO L226 Difference]: Without dead ends: 5200 [2025-03-04 09:23:27,667 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 09:23:27,668 INFO L435 NwaCegarLoop]: 2582 mSDtfsCounter, 27 mSDsluCounter, 9916 mSDsCounter, 0 mSdLazyCounter, 3854 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 12498 SdHoareTripleChecker+Invalid, 3865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-03-04 09:23:27,668 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 12498 Invalid, 3865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 3854 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-03-04 09:23:27,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5200 states. [2025-03-04 09:23:27,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5200 to 5191. [2025-03-04 09:23:27,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 4446 states have (on average 1.7242465137201979) internal successors, (7666), 5160 states have internal predecessors, (7666), 29 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (43), 28 states have call predecessors, (43), 29 states have call successors, (43) [2025-03-04 09:23:27,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 7738 transitions. [2025-03-04 09:23:27,731 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 7738 transitions. Word has length 92 [2025-03-04 09:23:27,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:23:27,732 INFO L471 AbstractCegarLoop]: Abstraction has 5191 states and 7738 transitions. [2025-03-04 09:23:27,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 18.0) internal successors, (90), 6 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:23:27,732 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 7738 transitions. [2025-03-04 09:23:27,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-03-04 09:23:27,733 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:23:27,733 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] [2025-03-04 09:23:27,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-04 09:23:27,733 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr876REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-04 09:23:27,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:23:27,736 INFO L85 PathProgramCache]: Analyzing trace with hash 690376774, now seen corresponding path program 1 times [2025-03-04 09:23:27,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:23:27,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429693809] [2025-03-04 09:23:27,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:23:27,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:23:27,752 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 92 statements into 1 equivalence classes. [2025-03-04 09:23:27,774 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 92 of 92 statements. [2025-03-04 09:23:27,775 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:23:27,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:28,102 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 09:23:28,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:23:28,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429693809] [2025-03-04 09:23:28,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429693809] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:23:28,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:23:28,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 09:23:28,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91755585] [2025-03-04 09:23:28,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:23:28,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 09:23:28,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:23:28,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 09:23:28,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-04 09:23:28,103 INFO L87 Difference]: Start difference. First operand 5191 states and 7738 transitions. Second operand has 6 states, 5 states have (on average 18.0) internal successors, (90), 6 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:23:29,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:23:29,693 INFO L93 Difference]: Finished difference Result 5191 states and 7736 transitions. [2025-03-04 09:23:29,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 09:23:29,693 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.0) internal successors, (90), 6 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 92 [2025-03-04 09:23:29,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:23:29,701 INFO L225 Difference]: With dead ends: 5191 [2025-03-04 09:23:29,701 INFO L226 Difference]: Without dead ends: 5191 [2025-03-04 09:23:29,701 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 09:23:29,702 INFO L435 NwaCegarLoop]: 2589 mSDtfsCounter, 22 mSDsluCounter, 7581 mSDsCounter, 0 mSdLazyCounter, 3447 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 10170 SdHoareTripleChecker+Invalid, 3456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 3447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-03-04 09:23:29,702 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 10170 Invalid, 3456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 3447 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-03-04 09:23:29,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5191 states. [2025-03-04 09:23:29,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5191 to 5191. [2025-03-04 09:23:29,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5191 states, 4446 states have (on average 1.7237966711650923) internal successors, (7664), 5160 states have internal predecessors, (7664), 29 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (43), 28 states have call predecessors, (43), 29 states have call successors, (43) [2025-03-04 09:23:29,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5191 states to 5191 states and 7736 transitions. [2025-03-04 09:23:29,753 INFO L78 Accepts]: Start accepts. Automaton has 5191 states and 7736 transitions. Word has length 92 [2025-03-04 09:23:29,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:23:29,753 INFO L471 AbstractCegarLoop]: Abstraction has 5191 states and 7736 transitions. [2025-03-04 09:23:29,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.0) internal successors, (90), 6 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:23:29,754 INFO L276 IsEmpty]: Start isEmpty. Operand 5191 states and 7736 transitions. [2025-03-04 09:23:29,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-04 09:23:29,755 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:23:29,755 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 09:23:29,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-04 09:23:29,755 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr875REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-04 09:23:29,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:23:29,755 INFO L85 PathProgramCache]: Analyzing trace with hash 133985044, now seen corresponding path program 1 times [2025-03-04 09:23:29,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:23:29,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840460589] [2025-03-04 09:23:29,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:23:29,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:23:29,790 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-04 09:23:29,811 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-04 09:23:29,811 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:23:29,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:30,103 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 09:23:30,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:23:30,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840460589] [2025-03-04 09:23:30,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840460589] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:23:30,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736742566] [2025-03-04 09:23:30,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:23:30,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:23:30,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:23:30,106 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 09:23:30,108 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 09:23:30,270 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-04 09:23:30,314 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-04 09:23:30,314 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:23:30,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:30,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-03-04 09:23:30,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:23:30,354 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 09:23:30,462 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2025-03-04 09:23:30,463 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 17 treesize of output 21 [2025-03-04 09:23:30,500 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 09:23:30,568 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 09:23:30,774 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:23:30,774 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 09:23:30,847 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 09:23:30,884 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 09:23:30,884 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:23:30,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736742566] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:23:30,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:23:30,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2025-03-04 09:23:30,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472143045] [2025-03-04 09:23:30,969 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:23:30,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-03-04 09:23:30,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:23:30,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-03-04 09:23:30,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=320, Unknown=4, NotChecked=0, Total=380 [2025-03-04 09:23:30,971 INFO L87 Difference]: Start difference. First operand 5191 states and 7736 transitions. Second operand has 19 states, 16 states have (on average 9.1875) internal successors, (147), 18 states have internal predecessors, (147), 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 09:23:34,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:23:34,784 INFO L93 Difference]: Finished difference Result 5198 states and 7742 transitions. [2025-03-04 09:23:34,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-04 09:23:34,784 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 9.1875) internal successors, (147), 18 states have internal predecessors, (147), 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 93 [2025-03-04 09:23:34,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:23:34,790 INFO L225 Difference]: With dead ends: 5198 [2025-03-04 09:23:34,790 INFO L226 Difference]: Without dead ends: 5198 [2025-03-04 09:23:34,791 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=465, Unknown=4, NotChecked=0, Total=552 [2025-03-04 09:23:34,791 INFO L435 NwaCegarLoop]: 1766 mSDtfsCounter, 2638 mSDsluCounter, 15666 mSDsCounter, 0 mSdLazyCounter, 9862 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2656 SdHoareTripleChecker+Valid, 17432 SdHoareTripleChecker+Invalid, 9888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 9862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2025-03-04 09:23:34,791 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2656 Valid, 17432 Invalid, 9888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 9862 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2025-03-04 09:23:34,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5198 states. [2025-03-04 09:23:34,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5198 to 5195. [2025-03-04 09:23:34,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5195 states, 4450 states have (on average 1.7229213483146066) internal successors, (7667), 5163 states have internal predecessors, (7667), 29 states have call successors, (29), 4 states have call predecessors, (29), 5 states have return successors, (31), 28 states have call predecessors, (31), 29 states have call successors, (31) [2025-03-04 09:23:34,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5195 states to 5195 states and 7727 transitions. [2025-03-04 09:23:34,843 INFO L78 Accepts]: Start accepts. Automaton has 5195 states and 7727 transitions. Word has length 93 [2025-03-04 09:23:34,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:23:34,844 INFO L471 AbstractCegarLoop]: Abstraction has 5195 states and 7727 transitions. [2025-03-04 09:23:34,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 9.1875) internal successors, (147), 18 states have internal predecessors, (147), 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 09:23:34,844 INFO L276 IsEmpty]: Start isEmpty. Operand 5195 states and 7727 transitions. [2025-03-04 09:23:34,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-03-04 09:23:34,844 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:23:34,845 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 09:23:34,854 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 09:23:35,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:23:35,049 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr876REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-04 09:23:35,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:23:35,050 INFO L85 PathProgramCache]: Analyzing trace with hash 133985045, now seen corresponding path program 1 times [2025-03-04 09:23:35,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:23:35,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630906245] [2025-03-04 09:23:35,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:23:35,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:23:35,068 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-04 09:23:35,087 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-04 09:23:35,087 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:23:35,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:35,580 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 09:23:35,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:23:35,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630906245] [2025-03-04 09:23:35,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630906245] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:23:35,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602954396] [2025-03-04 09:23:35,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:23:35,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:23:35,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:23:35,583 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 09:23:35,585 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 09:23:35,748 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-04 09:23:35,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-04 09:23:35,793 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:23:35,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:35,796 INFO L256 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-03-04 09:23:35,800 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:23:35,805 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 09:23:35,896 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-04 09:23:35,896 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 09:23:35,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-04 09:23:35,916 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 09:23:35,920 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 09:23:35,968 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 09:23:35,971 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 09:23:36,050 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:23:36,051 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 09:23:36,057 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 09:23:36,076 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 09:23:36,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-03-04 09:23:36,083 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 09:23:36,083 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:23:36,149 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_814 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_814) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 16))) (forall ((v_ArrVal_814 (Array Int Int)) (v_ArrVal_815 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_814) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 20) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_815) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2025-03-04 09:23:36,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602954396] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:23:36,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:23:36,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 14 [2025-03-04 09:23:36,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406344379] [2025-03-04 09:23:36,152 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:23:36,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-04 09:23:36,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:23:36,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-04 09:23:36,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=225, Unknown=1, NotChecked=30, Total=306 [2025-03-04 09:23:36,153 INFO L87 Difference]: Start difference. First operand 5195 states and 7727 transitions. Second operand has 15 states, 12 states have (on average 11.75) internal successors, (141), 15 states have internal predecessors, (141), 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 09:23:40,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:23:40,439 INFO L93 Difference]: Finished difference Result 5197 states and 7740 transitions. [2025-03-04 09:23:40,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-04 09:23:40,440 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 11.75) internal successors, (141), 15 states have internal predecessors, (141), 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 93 [2025-03-04 09:23:40,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:23:40,450 INFO L225 Difference]: With dead ends: 5197 [2025-03-04 09:23:40,450 INFO L226 Difference]: Without dead ends: 5197 [2025-03-04 09:23:40,451 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=345, Unknown=1, NotChecked=38, Total=462 [2025-03-04 09:23:40,451 INFO L435 NwaCegarLoop]: 1772 mSDtfsCounter, 2633 mSDsluCounter, 12469 mSDsCounter, 0 mSdLazyCounter, 10260 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2651 SdHoareTripleChecker+Valid, 14241 SdHoareTripleChecker+Invalid, 10286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 10260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:23:40,451 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2651 Valid, 14241 Invalid, 10286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 10260 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2025-03-04 09:23:40,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5197 states. [2025-03-04 09:23:40,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5197 to 5185. [2025-03-04 09:23:40,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 4442 states have (on average 1.7235479513732552) internal successors, (7656), 5155 states have internal predecessors, (7656), 29 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2025-03-04 09:23:40,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 7714 transitions. [2025-03-04 09:23:40,500 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 7714 transitions. Word has length 93 [2025-03-04 09:23:40,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:23:40,500 INFO L471 AbstractCegarLoop]: Abstraction has 5185 states and 7714 transitions. [2025-03-04 09:23:40,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 11.75) internal successors, (141), 15 states have internal predecessors, (141), 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 09:23:40,500 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 7714 transitions. [2025-03-04 09:23:40,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-04 09:23:40,502 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:23:40,502 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] [2025-03-04 09:23:40,511 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 09:23:40,706 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,SelfDestructingSolverStorable19 [2025-03-04 09:23:40,706 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr871REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-04 09:23:40,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:23:40,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1581021745, now seen corresponding path program 1 times [2025-03-04 09:23:40,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:23:40,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739186530] [2025-03-04 09:23:40,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:23:40,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:23:40,728 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-04 09:23:40,743 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-04 09:23:40,744 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:23:40,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:41,178 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 09:23:41,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:23:41,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739186530] [2025-03-04 09:23:41,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739186530] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:23:41,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:23:41,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-03-04 09:23:41,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300537809] [2025-03-04 09:23:41,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:23:41,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-04 09:23:41,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:23:41,181 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-04 09:23:41,181 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2025-03-04 09:23:41,182 INFO L87 Difference]: Start difference. First operand 5185 states and 7714 transitions. Second operand has 14 states, 12 states have (on average 7.75) internal successors, (93), 13 states have internal predecessors, (93), 1 states have call successors, (1), 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 09:23:44,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:23:44,700 INFO L93 Difference]: Finished difference Result 5204 states and 7748 transitions. [2025-03-04 09:23:44,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-04 09:23:44,700 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.75) internal successors, (93), 13 states have internal predecessors, (93), 1 states have call successors, (1), 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 95 [2025-03-04 09:23:44,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:23:44,707 INFO L225 Difference]: With dead ends: 5204 [2025-03-04 09:23:44,707 INFO L226 Difference]: Without dead ends: 5204 [2025-03-04 09:23:44,707 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 09:23:44,708 INFO L435 NwaCegarLoop]: 1766 mSDtfsCounter, 2649 mSDsluCounter, 17412 mSDsCounter, 0 mSdLazyCounter, 10831 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2667 SdHoareTripleChecker+Valid, 19178 SdHoareTripleChecker+Invalid, 10854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 10831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2025-03-04 09:23:44,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2667 Valid, 19178 Invalid, 10854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 10831 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2025-03-04 09:23:44,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5204 states. [2025-03-04 09:23:44,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5204 to 5200. [2025-03-04 09:23:44,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5200 states, 4456 states have (on average 1.7219479353680431) internal successors, (7673), 5168 states have internal predecessors, (7673), 29 states have call successors, (29), 4 states have call predecessors, (29), 5 states have return successors, (31), 28 states have call predecessors, (31), 29 states have call successors, (31) [2025-03-04 09:23:44,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5200 states to 5200 states and 7733 transitions. [2025-03-04 09:23:44,755 INFO L78 Accepts]: Start accepts. Automaton has 5200 states and 7733 transitions. Word has length 95 [2025-03-04 09:23:44,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:23:44,755 INFO L471 AbstractCegarLoop]: Abstraction has 5200 states and 7733 transitions. [2025-03-04 09:23:44,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.75) internal successors, (93), 13 states have internal predecessors, (93), 1 states have call successors, (1), 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 09:23:44,755 INFO L276 IsEmpty]: Start isEmpty. Operand 5200 states and 7733 transitions. [2025-03-04 09:23:44,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-03-04 09:23:44,756 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:23:44,756 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] [2025-03-04 09:23:44,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-04 09:23:44,756 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr872REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-04 09:23:44,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:23:44,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1581021744, now seen corresponding path program 1 times [2025-03-04 09:23:44,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:23:44,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788751773] [2025-03-04 09:23:44,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:23:44,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:23:44,774 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-04 09:23:44,791 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-04 09:23:44,791 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:23:44,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:45,216 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 09:23:45,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:23:45,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788751773] [2025-03-04 09:23:45,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788751773] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:23:45,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:23:45,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-04 09:23:45,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230546907] [2025-03-04 09:23:45,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:23:45,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-04 09:23:45,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:23:45,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-04 09:23:45,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-03-04 09:23:45,218 INFO L87 Difference]: Start difference. First operand 5200 states and 7733 transitions. Second operand has 11 states, 10 states have (on average 9.3) internal successors, (93), 11 states have internal predecessors, (93), 1 states have call successors, (1), 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 09:23:48,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:23:48,285 INFO L93 Difference]: Finished difference Result 5203 states and 7746 transitions. [2025-03-04 09:23:48,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 09:23:48,287 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.3) internal successors, (93), 11 states have internal predecessors, (93), 1 states have call successors, (1), 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 95 [2025-03-04 09:23:48,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:23:48,312 INFO L225 Difference]: With dead ends: 5203 [2025-03-04 09:23:48,312 INFO L226 Difference]: Without dead ends: 5203 [2025-03-04 09:23:48,312 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 09:23:48,313 INFO L435 NwaCegarLoop]: 1773 mSDtfsCounter, 2648 mSDsluCounter, 9351 mSDsCounter, 0 mSdLazyCounter, 7959 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2666 SdHoareTripleChecker+Valid, 11124 SdHoareTripleChecker+Invalid, 7981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 7959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:23:48,314 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2666 Valid, 11124 Invalid, 7981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 7959 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2025-03-04 09:23:48,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5203 states. [2025-03-04 09:23:48,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5203 to 5200. [2025-03-04 09:23:48,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5200 states, 4456 states have (on average 1.7214991023339319) internal successors, (7671), 5168 states have internal predecessors, (7671), 29 states have call successors, (29), 4 states have call predecessors, (29), 5 states have return successors, (31), 28 states have call predecessors, (31), 29 states have call successors, (31) [2025-03-04 09:23:48,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5200 states to 5200 states and 7731 transitions. [2025-03-04 09:23:48,356 INFO L78 Accepts]: Start accepts. Automaton has 5200 states and 7731 transitions. Word has length 95 [2025-03-04 09:23:48,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:23:48,356 INFO L471 AbstractCegarLoop]: Abstraction has 5200 states and 7731 transitions. [2025-03-04 09:23:48,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.3) internal successors, (93), 11 states have internal predecessors, (93), 1 states have call successors, (1), 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 09:23:48,356 INFO L276 IsEmpty]: Start isEmpty. Operand 5200 states and 7731 transitions. [2025-03-04 09:23:48,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-04 09:23:48,357 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:23:48,357 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 09:23:48,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-04 09:23:48,357 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr871REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-04 09:23:48,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:23:48,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1526742176, now seen corresponding path program 1 times [2025-03-04 09:23:48,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:23:48,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743359989] [2025-03-04 09:23:48,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:23:48,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:23:48,374 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-04 09:23:48,386 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-04 09:23:48,387 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:23:48,387 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:48,717 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 09:23:48,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:23:48,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743359989] [2025-03-04 09:23:48,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743359989] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:23:48,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923913913] [2025-03-04 09:23:48,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:23:48,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:23:48,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:23:48,720 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 09:23:48,721 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 09:23:48,893 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-04 09:23:48,944 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-04 09:23:48,945 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:23:48,945 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:48,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-03-04 09:23:48,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:23:48,955 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 09:23:49,054 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2025-03-04 09:23:49,054 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 17 treesize of output 21 [2025-03-04 09:23:49,080 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 09:23:49,135 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 09:23:49,230 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:23:49,230 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 09:23:49,293 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:23:49,293 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 09:23:49,305 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 09:23:49,328 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 09:23:49,328 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:23:49,366 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1096 (Array Int Int))) (= (select |c_#valid| (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_1096) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) 1)) is different from false [2025-03-04 09:23:49,384 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1099 (Array Int Int)) (v_ArrVal_1096 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1099))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1096)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2025-03-04 09:23:49,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923913913] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:23:49,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:23:49,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2025-03-04 09:23:49,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504204403] [2025-03-04 09:23:49,386 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:23:49,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-04 09:23:49,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:23:49,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-04 09:23:49,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=421, Unknown=15, NotChecked=86, Total=600 [2025-03-04 09:23:49,387 INFO L87 Difference]: Start difference. First operand 5200 states and 7731 transitions. Second operand has 22 states, 19 states have (on average 8.052631578947368) internal successors, (153), 21 states have internal predecessors, (153), 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 09:23:53,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:23:53,713 INFO L93 Difference]: Finished difference Result 5202 states and 7744 transitions. [2025-03-04 09:23:53,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-04 09:23:53,713 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 8.052631578947368) internal successors, (153), 21 states have internal predecessors, (153), 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 96 [2025-03-04 09:23:53,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:23:53,718 INFO L225 Difference]: With dead ends: 5202 [2025-03-04 09:23:53,718 INFO L226 Difference]: Without dead ends: 5202 [2025-03-04 09:23:53,718 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=544, Unknown=15, NotChecked=98, Total=756 [2025-03-04 09:23:53,719 INFO L435 NwaCegarLoop]: 1765 mSDtfsCounter, 2625 mSDsluCounter, 19141 mSDsCounter, 0 mSdLazyCounter, 11805 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2643 SdHoareTripleChecker+Valid, 20906 SdHoareTripleChecker+Invalid, 11830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 11805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:23:53,719 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2643 Valid, 20906 Invalid, 11830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 11805 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2025-03-04 09:23:53,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5202 states. [2025-03-04 09:23:53,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5202 to 5199. [2025-03-04 09:23:53,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5199 states, 4456 states have (on average 1.7210502692998204) internal successors, (7669), 5167 states have internal predecessors, (7669), 29 states have call successors, (29), 4 states have call predecessors, (29), 5 states have return successors, (31), 28 states have call predecessors, (31), 29 states have call successors, (31) [2025-03-04 09:23:53,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 7729 transitions. [2025-03-04 09:23:53,754 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 7729 transitions. Word has length 96 [2025-03-04 09:23:53,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:23:53,754 INFO L471 AbstractCegarLoop]: Abstraction has 5199 states and 7729 transitions. [2025-03-04 09:23:53,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 8.052631578947368) internal successors, (153), 21 states have internal predecessors, (153), 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 09:23:53,754 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 7729 transitions. [2025-03-04 09:23:53,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2025-03-04 09:23:53,755 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:23:53,755 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 09:23:53,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-04 09:23:53,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:23:53,955 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr872REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-04 09:23:53,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:23:53,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1526742177, now seen corresponding path program 1 times [2025-03-04 09:23:53,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:23:53,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576358582] [2025-03-04 09:23:53,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:23:53,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:23:53,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-04 09:23:53,983 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-04 09:23:53,983 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:23:53,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:54,484 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 09:23:54,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:23:54,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576358582] [2025-03-04 09:23:54,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576358582] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:23:54,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106790496] [2025-03-04 09:23:54,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:23:54,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:23:54,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:23:54,486 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 09:23:54,488 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 09:23:54,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 96 statements into 1 equivalence classes. [2025-03-04 09:23:54,704 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 96 of 96 statements. [2025-03-04 09:23:54,705 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:23:54,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:23:54,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-03-04 09:23:54,712 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:23:54,715 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 09:23:54,790 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-04 09:23:54,790 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 09:23:54,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-04 09:23:54,799 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 09:23:54,804 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 09:23:54,845 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 09:23:54,847 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 09:23:54,921 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:23:54,921 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 09:23:54,927 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 09:23:54,977 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:23:54,977 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 09:23:54,980 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 30 treesize of output 13 [2025-03-04 09:23:54,993 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 09:23:54,996 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 09:23:54,998 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 09:23:54,998 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:23:55,040 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1251 (Array Int Int)) (v_ArrVal_1250 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1250) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1251) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1250 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1250) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 4))))) is different from false [2025-03-04 09:23:55,105 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1257 (Array Int Int)) (v_ArrVal_1256 (Array Int Int)) (v_ArrVal_1250 (Array Int Int))) (<= 0 (+ 4 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1256) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1257) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_1250) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1257 (Array Int Int)) (v_ArrVal_1256 (Array Int Int)) (v_ArrVal_1251 (Array Int Int)) (v_ArrVal_1250 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1257))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (<= (+ 8 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1256) .cse1 v_ArrVal_1250) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_1251) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))))) is different from false [2025-03-04 09:23:55,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106790496] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:23:55,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:23:55,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 16 [2025-03-04 09:23:55,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154989295] [2025-03-04 09:23:55,107 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:23:55,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-04 09:23:55,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:23:55,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-04 09:23:55,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=312, Unknown=7, NotChecked=74, Total=462 [2025-03-04 09:23:55,108 INFO L87 Difference]: Start difference. First operand 5199 states and 7729 transitions. Second operand has 17 states, 14 states have (on average 10.428571428571429) internal successors, (146), 17 states have internal predecessors, (146), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 09:23:59,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:23:59,946 INFO L93 Difference]: Finished difference Result 5201 states and 7742 transitions. [2025-03-04 09:23:59,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-04 09:23:59,946 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 10.428571428571429) internal successors, (146), 17 states have internal predecessors, (146), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 96 [2025-03-04 09:23:59,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:23:59,950 INFO L225 Difference]: With dead ends: 5201 [2025-03-04 09:23:59,950 INFO L226 Difference]: Without dead ends: 5201 [2025-03-04 09:23:59,951 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=491, Unknown=7, NotChecked=94, Total=702 [2025-03-04 09:23:59,951 INFO L435 NwaCegarLoop]: 1771 mSDtfsCounter, 2633 mSDsluCounter, 13508 mSDsCounter, 0 mSdLazyCounter, 11957 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2651 SdHoareTripleChecker+Valid, 15279 SdHoareTripleChecker+Invalid, 11981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 11957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2025-03-04 09:23:59,951 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2651 Valid, 15279 Invalid, 11981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 11957 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2025-03-04 09:23:59,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5201 states. [2025-03-04 09:23:59,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5201 to 5183. [2025-03-04 09:23:59,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5183 states, 4442 states have (on average 1.7226474561008556) internal successors, (7652), 5153 states have internal predecessors, (7652), 29 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2025-03-04 09:23:59,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5183 states to 5183 states and 7710 transitions. [2025-03-04 09:23:59,991 INFO L78 Accepts]: Start accepts. Automaton has 5183 states and 7710 transitions. Word has length 96 [2025-03-04 09:23:59,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:23:59,991 INFO L471 AbstractCegarLoop]: Abstraction has 5183 states and 7710 transitions. [2025-03-04 09:23:59,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 10.428571428571429) internal successors, (146), 17 states have internal predecessors, (146), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 09:23:59,991 INFO L276 IsEmpty]: Start isEmpty. Operand 5183 states and 7710 transitions. [2025-03-04 09:23:59,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-04 09:23:59,992 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:23:59,992 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] [2025-03-04 09:23:59,999 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 09:24:00,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:24:00,192 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr867REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-04 09:24:00,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:24:00,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1604529954, now seen corresponding path program 1 times [2025-03-04 09:24:00,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:24:00,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056788045] [2025-03-04 09:24:00,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:24:00,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:24:00,210 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-04 09:24:00,222 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-04 09:24:00,222 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:24:00,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:24:00,489 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 09:24:00,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:24:00,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056788045] [2025-03-04 09:24:00,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056788045] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:24:00,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:24:00,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-04 09:24:00,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885713493] [2025-03-04 09:24:00,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:24:00,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-04 09:24:00,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:24:00,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-04 09:24:00,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-03-04 09:24:00,490 INFO L87 Difference]: Start difference. First operand 5183 states and 7710 transitions. Second operand has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 12 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:24:03,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:24:03,158 INFO L93 Difference]: Finished difference Result 5208 states and 7750 transitions. [2025-03-04 09:24:03,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-04 09:24:03,158 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 12 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2025-03-04 09:24:03,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:24:03,163 INFO L225 Difference]: With dead ends: 5208 [2025-03-04 09:24:03,163 INFO L226 Difference]: Without dead ends: 5208 [2025-03-04 09:24:03,163 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2025-03-04 09:24:03,163 INFO L435 NwaCegarLoop]: 1771 mSDtfsCounter, 2653 mSDsluCounter, 12195 mSDsCounter, 0 mSdLazyCounter, 7851 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2671 SdHoareTripleChecker+Valid, 13966 SdHoareTripleChecker+Invalid, 7874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 7851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2025-03-04 09:24:03,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2671 Valid, 13966 Invalid, 7874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 7851 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2025-03-04 09:24:03,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5208 states. [2025-03-04 09:24:03,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5208 to 5204. [2025-03-04 09:24:03,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5204 states, 4462 states have (on average 1.72008068130883) internal successors, (7675), 5172 states have internal predecessors, (7675), 29 states have call successors, (29), 4 states have call predecessors, (29), 5 states have return successors, (31), 28 states have call predecessors, (31), 29 states have call successors, (31) [2025-03-04 09:24:03,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5204 states to 5204 states and 7735 transitions. [2025-03-04 09:24:03,197 INFO L78 Accepts]: Start accepts. Automaton has 5204 states and 7735 transitions. Word has length 98 [2025-03-04 09:24:03,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:24:03,197 INFO L471 AbstractCegarLoop]: Abstraction has 5204 states and 7735 transitions. [2025-03-04 09:24:03,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 12 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:24:03,197 INFO L276 IsEmpty]: Start isEmpty. Operand 5204 states and 7735 transitions. [2025-03-04 09:24:03,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-03-04 09:24:03,198 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:24:03,198 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] [2025-03-04 09:24:03,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-03-04 09:24:03,198 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr868REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-04 09:24:03,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:24:03,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1604529953, now seen corresponding path program 1 times [2025-03-04 09:24:03,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:24:03,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533538765] [2025-03-04 09:24:03,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:24:03,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:24:03,213 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 98 statements into 1 equivalence classes. [2025-03-04 09:24:03,222 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 98 of 98 statements. [2025-03-04 09:24:03,223 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:24:03,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:24:03,634 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 09:24:03,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:24:03,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533538765] [2025-03-04 09:24:03,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533538765] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:24:03,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:24:03,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-04 09:24:03,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57479278] [2025-03-04 09:24:03,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:24:03,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-04 09:24:03,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:24:03,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-04 09:24:03,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-03-04 09:24:03,637 INFO L87 Difference]: Start difference. First operand 5204 states and 7735 transitions. Second operand has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 12 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:24:07,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:24:07,135 INFO L93 Difference]: Finished difference Result 5207 states and 7748 transitions. [2025-03-04 09:24:07,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 09:24:07,135 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 12 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 98 [2025-03-04 09:24:07,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:24:07,140 INFO L225 Difference]: With dead ends: 5207 [2025-03-04 09:24:07,140 INFO L226 Difference]: Without dead ends: 5207 [2025-03-04 09:24:07,140 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 09:24:07,141 INFO L435 NwaCegarLoop]: 1772 mSDtfsCounter, 2665 mSDsluCounter, 10392 mSDsCounter, 0 mSdLazyCounter, 9662 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2683 SdHoareTripleChecker+Valid, 12164 SdHoareTripleChecker+Invalid, 9684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 9662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2025-03-04 09:24:07,141 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2683 Valid, 12164 Invalid, 9684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 9662 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2025-03-04 09:24:07,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5207 states. [2025-03-04 09:24:07,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5207 to 5204. [2025-03-04 09:24:07,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5204 states, 4462 states have (on average 1.7196324518153294) internal successors, (7673), 5172 states have internal predecessors, (7673), 29 states have call successors, (29), 4 states have call predecessors, (29), 5 states have return successors, (31), 28 states have call predecessors, (31), 29 states have call successors, (31) [2025-03-04 09:24:07,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5204 states to 5204 states and 7733 transitions. [2025-03-04 09:24:07,180 INFO L78 Accepts]: Start accepts. Automaton has 5204 states and 7733 transitions. Word has length 98 [2025-03-04 09:24:07,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:24:07,180 INFO L471 AbstractCegarLoop]: Abstraction has 5204 states and 7733 transitions. [2025-03-04 09:24:07,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 12 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-03-04 09:24:07,180 INFO L276 IsEmpty]: Start isEmpty. Operand 5204 states and 7733 transitions. [2025-03-04 09:24:07,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-03-04 09:24:07,180 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:24:07,181 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] [2025-03-04 09:24:07,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-04 09:24:07,181 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr867REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-04 09:24:07,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:24:07,181 INFO L85 PathProgramCache]: Analyzing trace with hash -524592019, now seen corresponding path program 1 times [2025-03-04 09:24:07,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:24:07,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667209806] [2025-03-04 09:24:07,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:24:07,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:24:07,213 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-04 09:24:07,225 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-04 09:24:07,226 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:24:07,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:24:07,532 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 09:24:07,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:24:07,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667209806] [2025-03-04 09:24:07,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667209806] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:24:07,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594070967] [2025-03-04 09:24:07,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:24:07,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:24:07,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:24:07,535 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 09:24:07,536 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 09:24:07,719 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-04 09:24:07,758 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-04 09:24:07,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:24:07,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:24:07,761 INFO L256 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-04 09:24:07,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:24:07,767 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 09:24:07,836 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2025-03-04 09:24:07,837 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 17 treesize of output 21 [2025-03-04 09:24:07,852 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 09:24:07,914 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 09:24:08,011 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:24:08,012 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 09:24:08,060 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:24:08,061 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 09:24:08,096 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:24:08,096 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 09:24:08,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2025-03-04 09:24:08,134 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 09:24:08,134 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:24:08,140 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1563 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_1563) |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 09:24:08,172 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1563 (Array Int Int)) (v_ArrVal_1562 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1562))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1563)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2025-03-04 09:24:08,176 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1563 (Array Int Int)) (v_ArrVal_1562 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1562))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1563)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2025-03-04 09:24:08,195 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1566 (Array Int Int)) (v_ArrVal_1563 (Array Int Int)) (v_ArrVal_1562 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_1566))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1562)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1563)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2025-03-04 09:24:08,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594070967] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:24:08,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:24:08,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 23 [2025-03-04 09:24:08,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981743856] [2025-03-04 09:24:08,196 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:24:08,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-04 09:24:08,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:24:08,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-04 09:24:08,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=509, Unknown=8, NotChecked=196, Total=812 [2025-03-04 09:24:08,197 INFO L87 Difference]: Start difference. First operand 5204 states and 7733 transitions. Second operand has 24 states, 21 states have (on average 7.571428571428571) internal successors, (159), 23 states have internal predecessors, (159), 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 09:24:13,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:24:13,257 INFO L93 Difference]: Finished difference Result 5206 states and 7746 transitions. [2025-03-04 09:24:13,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-04 09:24:13,258 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 7.571428571428571) internal successors, (159), 23 states have internal predecessors, (159), 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 99 [2025-03-04 09:24:13,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:24:13,262 INFO L225 Difference]: With dead ends: 5206 [2025-03-04 09:24:13,262 INFO L226 Difference]: Without dead ends: 5206 [2025-03-04 09:24:13,263 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=643, Unknown=8, NotChecked=220, Total=992 [2025-03-04 09:24:13,263 INFO L435 NwaCegarLoop]: 1764 mSDtfsCounter, 2626 mSDsluCounter, 22644 mSDsCounter, 0 mSdLazyCounter, 13751 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2644 SdHoareTripleChecker+Valid, 24408 SdHoareTripleChecker+Invalid, 13776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 13751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2025-03-04 09:24:13,263 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2644 Valid, 24408 Invalid, 13776 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 13751 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2025-03-04 09:24:13,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5206 states. [2025-03-04 09:24:13,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5206 to 5203. [2025-03-04 09:24:13,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 4462 states have (on average 1.7191842223218288) internal successors, (7671), 5171 states have internal predecessors, (7671), 29 states have call successors, (29), 4 states have call predecessors, (29), 5 states have return successors, (31), 28 states have call predecessors, (31), 29 states have call successors, (31) [2025-03-04 09:24:13,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 7731 transitions. [2025-03-04 09:24:13,299 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 7731 transitions. Word has length 99 [2025-03-04 09:24:13,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:24:13,299 INFO L471 AbstractCegarLoop]: Abstraction has 5203 states and 7731 transitions. [2025-03-04 09:24:13,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 7.571428571428571) internal successors, (159), 23 states have internal predecessors, (159), 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 09:24:13,299 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 7731 transitions. [2025-03-04 09:24:13,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-03-04 09:24:13,300 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:24:13,300 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] [2025-03-04 09:24:13,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-04 09:24:13,500 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,SelfDestructingSolverStorable26 [2025-03-04 09:24:13,500 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr868REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-04 09:24:13,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:24:13,501 INFO L85 PathProgramCache]: Analyzing trace with hash -524592018, now seen corresponding path program 1 times [2025-03-04 09:24:13,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:24:13,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303807957] [2025-03-04 09:24:13,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:24:13,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:24:13,521 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-04 09:24:13,534 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-04 09:24:13,535 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:24:13,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:24:13,985 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 09:24:13,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:24:13,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303807957] [2025-03-04 09:24:13,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303807957] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:24:13,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277826872] [2025-03-04 09:24:13,985 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:24:13,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 09:24:13,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 09:24:13,987 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 09:24:13,989 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 09:24:14,162 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-04 09:24:14,200 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-04 09:24:14,200 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:24:14,200 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:24:14,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-03-04 09:24:14,205 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 09:24:14,207 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 09:24:14,268 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-03-04 09:24:14,268 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 09:24:14,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-03-04 09:24:14,287 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 09:24:14,292 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 09:24:14,333 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 09:24:14,335 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 09:24:14,408 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:24:14,408 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 09:24:14,412 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 09:24:14,459 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:24:14,460 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 09:24:14,465 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 09:24:14,508 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-03-04 09:24:14,508 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 09:24:14,511 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 09:24:14,545 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 09:24:14,549 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 09:24:14,568 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 09:24:14,568 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 09:24:15,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277826872] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 09:24:15,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-04 09:24:15,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2025-03-04 09:24:15,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375848618] [2025-03-04 09:24:15,062 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-04 09:24:15,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-04 09:24:15,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:24:15,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-04 09:24:15,063 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=728, Unknown=30, NotChecked=0, Total=870 [2025-03-04 09:24:15,063 INFO L87 Difference]: Start difference. First operand 5203 states and 7731 transitions. Second operand has 23 states, 20 states have (on average 7.95) internal successors, (159), 23 states have internal predecessors, (159), 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 09:24:20,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 09:24:20,456 INFO L93 Difference]: Finished difference Result 5205 states and 7744 transitions. [2025-03-04 09:24:20,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-04 09:24:20,457 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 7.95) internal successors, (159), 23 states have internal predecessors, (159), 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 99 [2025-03-04 09:24:20,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 09:24:20,461 INFO L225 Difference]: With dead ends: 5205 [2025-03-04 09:24:20,461 INFO L226 Difference]: Without dead ends: 5205 [2025-03-04 09:24:20,461 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=183, Invalid=1047, Unknown=30, NotChecked=0, Total=1260 [2025-03-04 09:24:20,462 INFO L435 NwaCegarLoop]: 1770 mSDtfsCounter, 2634 mSDsluCounter, 16620 mSDsCounter, 0 mSdLazyCounter, 14254 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2652 SdHoareTripleChecker+Valid, 18390 SdHoareTripleChecker+Invalid, 14281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 14254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2025-03-04 09:24:20,462 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2652 Valid, 18390 Invalid, 14281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 14254 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2025-03-04 09:24:20,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5205 states. [2025-03-04 09:24:20,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5205 to 5181. [2025-03-04 09:24:20,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5181 states, 4442 states have (on average 1.7217469608284557) internal successors, (7648), 5151 states have internal predecessors, (7648), 29 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2025-03-04 09:24:20,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5181 states to 5181 states and 7706 transitions. [2025-03-04 09:24:20,512 INFO L78 Accepts]: Start accepts. Automaton has 5181 states and 7706 transitions. Word has length 99 [2025-03-04 09:24:20,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 09:24:20,512 INFO L471 AbstractCegarLoop]: Abstraction has 5181 states and 7706 transitions. [2025-03-04 09:24:20,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 7.95) internal successors, (159), 23 states have internal predecessors, (159), 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 09:24:20,512 INFO L276 IsEmpty]: Start isEmpty. Operand 5181 states and 7706 transitions. [2025-03-04 09:24:20,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-03-04 09:24:20,513 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 09:24:20,513 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 09:24:20,519 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 09:24:20,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-03-04 09:24:20,713 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr863REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 983 more)] === [2025-03-04 09:24:20,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 09:24:20,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1857921976, now seen corresponding path program 1 times [2025-03-04 09:24:20,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 09:24:20,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72349814] [2025-03-04 09:24:20,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 09:24:20,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 09:24:20,728 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-03-04 09:24:20,737 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-03-04 09:24:20,737 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 09:24:20,737 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 09:24:21,030 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 09:24:21,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 09:24:21,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72349814] [2025-03-04 09:24:21,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72349814] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 09:24:21,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 09:24:21,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2025-03-04 09:24:21,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663820216] [2025-03-04 09:24:21,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 09:24:21,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-04 09:24:21,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 09:24:21,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-04 09:24:21,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2025-03-04 09:24:21,031 INFO L87 Difference]: Start difference. First operand 5181 states and 7706 transitions. Second operand has 16 states, 14 states have (on average 7.071428571428571) internal successors, (99), 15 states have internal predecessors, (99), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)